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BT2-series FUJI AIR CIRCUIT BREAKER - Fuji Electric

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Catalog thiết bị đóng cắt Fuji Electric - BT2-series
FUJI AIR CIRCUIT BREAKER
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CTY TNHH HẠO PHƯƠNG - Nhà phân phối chính thức các thiết bị điện công nghiệp và tự động hóa của hãng FUJI ELECTRIC JAPAN tại Việt Nam

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BT2-series FUJI AIR CIRCUIT BREAKER - Fuji Electric

  1. 1. Request ! ! Fuji Electric FA Components & Systems Co.,Ltd. BT2-series FUJI AIR CIRCUIT BREAKER Instruction Manual Please apply appropriate means to ensure that Instruction Manual is delivered to the persons assigned with final Responsibilities for maintenance of this equipment.
  2. 2. Ha Noi Office: No. 95 - TT4, My Dinh Urban Area, My Dinh, Nam Tu Liem, Hanoi. Tel: (84 4) 3568 3740 Fax: (84 4) 3568 3741 Cambodia Office: #140, Room 1-B, St430, Sangkat Toul Tompuong II, Khan Chamkamon, PP. Tel: 855 2322 3635 Fax: 855 2322 3645 Head Office: No 88, Vinh Phu 40, Hoa Long, Vinh Phu, Thuan An, Binh Duong. Tel: (84 650) 37 37 619 Fax: (84 650) 37 37 620 1800 6547 THINK TOGETHER Nhà phân phối thiết bị điện công nghiệp hàng đầu Việt Nam T
  3. 3. SAFETY NOTICES Thank you for purchasing the FUJI BT2-series Air Circuit Breaker. This chapter contains important safety information. Be sure to carefully read these safety notices, instruction in this manual, and other documents accompanying the Air Circuit Breaker (hereinafter referred to as the ACB) to familiarize yourself with safe and correct procedures or practices before installing, operating, or servicing the ACB. In this manual, safety notices are divided into “DANGER” and “CAUTION” according to the hazard level: DANGER CAUTION :A danger notice with this symbol indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. :A caution notice with this symbol indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury and/or property damage. Note that failure to observe a caution notice could result in serious injury/damage in some situations. Because safety notices contain important information, be sure to read and observe ■ Transportation Precaution DANGER ● Never stand under the ACB that has been lifted or suspended by a lifter or lifting attachments. The weight of the ACB may cause serious injury. ■ Installation Precaution CAUTION ● ● Do not place the ACB in such an area that is subject to high temperatures, high humidity, dusty air, corrosive gases, strong vibration and shock, or other unusual conditions. Mounting the ACB in such an area could cause a fire or malfunction. ● Be careful to prevent foreign objects (such as debris, concrete powder, dust, chippings, and iron powder) and oil or rainwater from entering the ACB. These materials inside the ACB could cause a fire or malfunction. ● Prior to commencing any work on the ACB, open an upstream circuit breaker or the like to isolate all sources of power/voltage. Otherwise, electric shock may result. ● Fix the draw-out cradle of the ACB firmly on a flat, level surface using mounting screws. Otherwise, the draw-out operation may cause the breaker body or the draw-out cradle to fall, resulting in damage to the ACB or personal injury. ● Take care not to deform or bend protrusions in the bottom face of the draw-out cradle when fixing the draw-out cradle with mounting screws. Deformation of the protrusions may cause a malfunction. ● Connect conductors (including screws) to the main circuit terminals in the specified area. Otherwise, a short-circuit may result. ● When terminating conductors to the ACB, tighten terminal screws to the torque specified in this manual. Otherwise, a fire could result. ● For 4-pole ACBs, be sure to connect a 3-phase, 4-wire neutral conductor to the N-phase pole (on the right end). Otherwise, an overcurrent may hinder the ACB from tripping, resulting in a fire. Electrical work must be done by competent persons. ■ Operation Precautions DANGER ● Never touch live terminal parts. Doing so will result in electric shock. ● Do not leave the ACB body in the draw-out position. If the ACB body is accidentally dropped, its weight may cause serious injury. CAUTION ●Do not force down the charging handle after completion of manual charging operation. Doing so may cause a malfunction. ●The permissible operating voltage of the spring charging motor is 85 to 110% of the rated ac voltage or 75 to 110% of the rated dc voltage. Be sure to supply a voltage within the above
  4. 4. SAFETY NOTICES ■ OCR (Overcurrent Release) Handling Precautions ●OCR setting changes must be performed by competent persons. ●Use a small flatblade screwdriver with a torque of not more than 0.1 N·m or a force of not more than 0.1 N when adjusting the setting switches (rotary step switches or slide switches). An excessive torque or force may cause a malfunction. CAUTION ■ Maintenance and Inspection Precautions CAUTION ●ACB maintenance, inspection and parts replacement must be performed by competent persons. ●Do not touch ACB current carrying parts and its surrounding parts or structures after the ACB trips open. Remaining heat may cause a burn. ●Prior to commencing any work on the ACB, open an upstream circuit breaker or the like to isolate all sources of power/voltage from the main and control circuits. Otherwise, electric shock may result. ●Take care to avoid adhesion of dust to main and control circuit contacts. Dust on the contacts may result in a fire. ●Prior to commencing maintenance, inspection, or parts replacement, make sure that the closing springs are released and the ACB is open. Otherwise, unintentional open/close operation may lead to fingers or tools to be pinched by the open/close mechanism, resulting in injury. ●Retighten the terminal screws periodically to the specified torque. Otherwise, a fire could result. ● When grinding a contact tip, be careful to prevent grinding dust from entering the breaker operating mechanism. Wipe the tip clean after grinding. Otherwise, a malfunction or fire could result. ●Do not perform dielectric withstand tests under other conditions than specified. Doing so may cause a malfunction. ●Be sure to reinstall the arc chamber if removed. Failure to do so or incorrect installation of the arc chamber may result in a fire or burn. ●When charging the closing springs or performing open/close operation of the ACB with the arc chamber, front cover and/or side covers removed during maintenance or inspection work, do not touch parts other than those required for the above operation (charging handle, ON/OFF buttons, moving core and the like). Doing so may cause fingers or tools to be pinched, resulting in injury. ●When replacing an auxiliary, do not damage the control wire for the auxiliary or pinch the wire between the auxiliary and the breaker body. Doing so may cause a malfunction. ranges to the motor. Otherwise, a malfunction, burnout, or fire may result. ● Repeated open/close operation by the motor charging mechanism without pause should not exceed 15 times. If repeated continuous open/close operation is inevitable, a pause of at least 20 minutes should be provided after the repetitions of 15 times. Otherwise, a spring charging motor may be burnt out. ●Do not bring your hand or face close to arc gas vent of the arc chamber while the ACB is closed. Otherwise, a burn may result from high-temperature arc gas blowing out of the arc gas vent when the ACB trips open. ●If the ACB trips open automatically, remove the cause of tripping operation before re-closing the ACB. Otherwise, a fire could result. ● If the ACB has the breaker fixing bolts, be sure to loose the fixing bolts before draw-out operation. Otherwise, damage to the ACB may result. ●Make sure the draw-out cradle is secured with mounting screws before inserting or drawing out the breaker body. Otherwise, the insertion or draw-out operation may cause the breaker body or the draw-out cradle to fall, resulting in damage to the ACB or personal injury. ●When retracting the draw-out rail into the draw-out cradle, be sure to push the rail end. Do not hold the hook pin, body stopper, or body stopper shaft. Doing so may cause your fingers to be pinched, resulting in injury. ● Do not forcedly turn the draw-out handle clockwise when the breaker body is in the “CONN.” position. Doing so may cause a malfunction. ● If the ACB has the breaker fixing bolts, make sure the bolts on both sides are securely tightened before using the ACB. Loosened fixing bolts may cause a malfunction of the ACB, in particular when it is installed in such an area that is subject to strong vibrations.
  5. 5. CONTENTS 1.0 General description 2.0 Acceptance 3.0 Storage, transportation and weight 4.0 Unpacking and notice 5.0 Installation 6.0 Electrical wiring 1.1 Applicable condition 1.2 Main features 1.3 General structure 1.4 Protection characteristic curve of intelligent controller 3.1 Storage 3.2 Transportation 3.3 Weight 4.1 Unpacking 4.2 Items to check before operation 5.1 Environment condition 5.2 Preparation 5.3 Installation of draw-out breaker 5.4 In of fixed breaker 6.1 Schematic diagram for secondary circuit terminals of BT2-1600 circuit breaker 6.2 Applied torque for connecting busbar and terminals 6.3 Grounding 6.4 Power loss and derating coefficient 6.5 Specification of the copper busbar wired in the primary circuit of draw-out breaker stallation 1 1 1 2 4 11 11 11 12 14 14 15 15 15 16 16 16 17 17 17 17 11 19 18
  6. 6. 6.6 Secondary circuit wiring diagram 7.1 Charging operation 7.2 On and off operation 7.3 Operation of draw-out breaker 7.4 Lock at the position of separated by safety padlock mechanism for the draw-out Breaker socket 8.1 Setting and use of type L25intelligent controller 8.2 Setting and use of type M25, M26 and H26 intelligent controller 8.3 8.4 8.5 10.1 Checking and preparation 10.2 Trial operation 11.1 Maintenance 11.2 Examination and repair 11.3 R ccessories 13.1 Necessary accessories 13.2 Optional accessories 7.0 Operation 8.0 Setting and use of intelligent controller 9.0 Checking 10.0 Trial operation 11.0 Maintenance , examination and repair 12.0 Common fault and solution 13.0 Accessories 14.0 Outline dimensions and installation dimensions “ ” Characteristic setting and use of P25 and P26 controller Communication function of H26, P25 and P26 controller Other Function eplacement of a 20 24 24 24 26 33 34 34 37 57 57 57 58 58 58 59 61 62 65 65 68 75 CONTENTS 54 54 55
  7. 7. 1.0 GENERALDESCRIPTION 1.1 APPLICABLE CONDITION According to the requirements of the lastest International Standard IEC 60947-2, Fuji Electric FA Components & Systems Co.,Ltd presents the new generation of BT2 Series Intelligent Air Circuit Breaker, which embraces the human-based design and convenient application and is characteristic of all-intelligence, high-breaking capacity, isolation etc and which has shaped the new image of new generation of circuit breakers. BT2 Series Intelligent Air Circuit Breaker (hereinafter referred to as Circuit Breaker) is mainly used to distribute electric power and protect the electric circuit and devices from over-load, shortcircuit,under-voltage and grounding fault etc in the distribution system of AC50Hz/60Hz, Rated Operating Voltage 440V、 690Vand 1000V, Rated Insulation Voltage 1000V, and Rated Operating Current 6300A or below. The Circuit Breaker has introduced the intelligent controller with accurate selective protection and multiple functions and especially suits for the distribution system, in which the reliability of power supply needs to be improved and power failure should be avoided. The Circuit Breakers, with Rated Operating Current 1000A and below, can take the role of motor overload, short-circuit, under-voltage and grounding fault protections in the network of AC50Hz/60Hz 440V and can also infrequently start a motor under normal conditions. 1.2 MAIN FEATURES ·1· High performance, compact size BT2 Series Circuit Breaker has five frames:1600, 2000, 2500, 4000 and 6300. BT2-1600, which can be installed inside the switchgear cabinet of 400mm in width, is only 248mm in width. The size of the newly developed BT2-2500, which is 347mm in width which is equal to that of BT2- 2000;and whose Ics is queal to Icu up to 85kA and whose short time withstand current is up to 65kA. BT2-4000 and BT2-6300 can save space and costs forcustomers by meeting the requirements of high capacity and miniaturization. Higher breaking capacity and short-time withstand capacity For the whole series of BT2 Circuit Breakers(not for BT2-1600 at 690V), Rated service Short- circuit Breaking Capacity Ics is 100 percent equal to Rated Ultimate Short-circuit Breaking Capacity Icu. As the rated service short-circuit breaking capaicty is up to 120kA at maximum and short-time withstand current Icw is up to 100kA at maximum, the BT2 Series can confidently face the challenge of all kinds of protected occassions. Simply installed, cost-saving BT2 Series Circuit Breakers bus bar terminals can be simply installed as follows: 1. Horizontal connection; 2. Vertical connection;3. Composite connection
  8. 8. ·2· 1.0 GENERALDESCRIPTION 1.3 GENERAL STRUCTURE There are two kinds of circuit breakers: fixed and draw-out. The latter is formed by putting the the main body into the exclusive draw-out socket. The main body is composed of contact system, arc-over system, operating mechanism system, current transformer, intelligent controller, auxiliary switch, secondary connector, under-voltage release, shunt release etc; The draw-out socket is composed of two-side plates of cradle, base, crossbeam,etc…. Outline and Name of each part Fig . Fixed1-1 Advanced and reliable safety performance BT2 Series Circuit Breakers are reliable by the following aspects: Reliable assurance of the three positions: connected, test, seperated by the locked and automatically unlocked mechanismat the draw-out socket. Clear indication of ready-for-switching-on to ensure safe manipulation and reliable operation More reliable safety protection with secondary terminals of protection grade IP30 More complete protection and comprehensive selection BT2 Series Circuit Breakers can implement zone selective interlock (ZSI) to ensure comprehensive selection of various protection and reduce the copper bar's bearing of thermodynamic. Easy to integrate and realize networking management BT2 Series Circuit Breakers can achieve the function of intelligent and networking monitor and are easy for customers to carry out integrated management by adopting open communication,protocol Modbus-RTU, which can connect with Field Bus such as Profibus, DeviceNet by converter.
  9. 9. 18 19 2021 22 23 24 Fig.1-3 Draw-out socket outline ·3· Illustrations: Installation hole Satety back plate Wiring terminals of secondary circuit Side plate Copper bar of the main circuit Draw-out socket Earthing point at draw-out socket 18 19 20 21 22 23 24 1 2 Fig.1-2 Draw-out “ ” “ ” “ ” “ ” “ ” “ ” “ ” Separated : indicates that main circuit and secondary circuit are both in isolation. test : indicates that main circuit is in isolation and secondary cir cuit is in connection. connected : indicates that main circuit and secondary circuit are both in connection. The circuit breaker can be automatically locked (rocker can not be turned at this point) when its main body is at the position of separated , test or connected by turning the rocker, and can be unlocked by pushing unlock button to the left side. Illustrations: Name Plate Indication window of energy-storage and energy-release Switching-on Button Manual energy-storage handle Brand Wiring terminals of secondary circuit "Switching-off "lock mechanism Release indication and resetting button Intelligent controller Switching button Indication of switching-on( "I" )andswitching-off( "O" ) Indication of ready-for-switching-on(" OK" ) Unlock button of the three positions( "separated ", "test" and "connected" ) for draw-out circuit breakers Rocker operating hole of the draw-out circuit breaker Rocker storage hole of the draw-out circuit breaker Indication of the three positions( "separated" , "test" and "connected") of the draw-out circuit breaker 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Note: 1.0 GENERALDESCRIPTION
  10. 10. 1.4 Protection characteristic curve of intelligent controller Characteristic Curve Time/Current Curve of Type L25 intelligent controller (I t) 2 ·4· 1.0 GENERALDESCRIPTION Ir1 0.4 1 1.5 3 10 15 0.01 0.02 0.1 0.2 1 10 100 1000 10000 t(s) 0.3 0.4 Ir1 t1 long-time delay curve Ir2I T ON2 Short-time delay curve I T OFF2 Instantaneous curve t2 Ir =(0.65~1)In t =15s~480s 6 steps in total 1 1 The range of long-time delay The range of short-time delay Ir =(1.5~10)Ir +OFF t =0.1s~0.4s 4 steps in total 2 1 2 Instantaneous range Ir =(3~15)Ir +OFF3 1 Instantaneous range Factory's setting value
  11. 11. Time/Current Curve of Type M25, M26 , H26, P25, P26 intelligent controller (I t) 2 ·5· 1.0 GENERALDESCRIPTION 0.4 1 10 0.01 0.02 0.1 0.2 1 10 100 1000 10000 t(s) 0.3 0.4 1.6 15 80 Ir =(0.4~15)In+OFF t =0.1s~0.4s 4 steps in total 2 2 Ir =(0.4~1)In t =15s~480s 6 steps in total 1 1 The range of long-time delay The range of short-time delay Ir =1.6kA~35kA+OFF3 2kA~50kA+OFF 2.5kA~50kA+OFF 4kA~65kA+OFF 6.3kA~80kA+OFF Instantaneous range kAIr1 Ir1 t1 long-time delay curve Ir2I T ON 2 Short-time delay curve I T OFF2 t2 Instantaneous curve Factory's setting value Instantaneous range BT2-1600 BT2-2000 BT2-2500 BT2-4000 BT2-6300
  12. 12. Time/Current Curve of Type P25 and P26 intelligent controller (inverse time delay pecial It)s ·6· 1.0 GENERALDESCRIPTION 0.4 1 10 0.01 0.02 0.1 0.2 1 10 100 1000 10000 t(s) 0.3 0.4 1.6 15 kAIr1 80 Ir =(0.4~15)In+OFF t =0.1s~0.4s 4 steps in total 2 2 Ir =(0.4~1)In t =10s~120s 6 steps in total 1 1 The range of long-time delay The range of short-time delay Ir =1.6kA~35kA+OFF3 2kA~50kA+OFF 2.5kA~50kA+OFF 4kA~65kA+OFF 6.3kA~80kA+OFF Instantaneous range Ir1 t1 long-time delay curve Ir2I T ON 2 Short-time delay curve t2 I T OFF 2 Instantaneous curve Factory's setting value Instantaneous range BT2-1600 BT2-2000 BT2-2500 BT2-4000 BT2-6300
  13. 13. Time/Current Curve of Type P25 and P26 intelligent controller (high-voltage fuse I t)4 ·7· 1.0 GENERALDESCRIPTION Ir =(0.4~15)In+OFF t =0.1s~0.4s 2 2 4 steps in total Ir =(0.4~1)In t =60s~1440s 6 1 1 steps in total The range of long-time delay The range of short-time delay Ir =1.6kA~35kA+OFF3 2kA~50kA+OFF 2.5kA~50kA+OFF 4kA~65kA+OFF 6.3kA~80kA+OFF Instantaneous range 0.4 1 10 0.001 0.1 0.2 1 100 1000 10000 100000 t(s) 0.3 0.4 1.6 15 kAIr1 80 10 0.01 Ir1 t1 long-time delay curve Ir2I T ON2 Short-time delay curve t2 I T OFF 2 Instantaneous curve Instantaneous range Factory's setting value BT2-1600 BT2-2000 BT2-2500 BT2-4000 BT2-6300
  14. 14. Time/Current Curve of Type M26 , H26 and P26 intelligent controller (for ground-fault protection) ·8· 1.0 GENERALDESCRIPTION Grounding current Ir =(0.4~0.8)In(BT2-1600) Ir =(0.2~0.8)In(BT2-2000、 BT2-2500) Ir =(0.2~0.6)In(BT2-4000) Ir =(0.2~0.5)In(BT2-6300) t =0.1s~0.4s 4级 four steps 4 4 4 4 4 Ir4 Maximum 1200A(For BT2-2000、BT2-2500) 1000A(For BT2-1600) 1600A(For BT2-4000) Maximum 2000A(For BT2-6300) Maximum Maximum 0.2 0.8 10 100 In 1 0.01 0.1 0.2 1 10 100 1000 t(s) 0.3 0.4 Maximum
  15. 15. Time/Current Curve of Type M25, M26 , H26 , P25 and P26 intelligent controller (for load-monitoring pattern one) ·9· 1.0 GENERALDESCRIPTION I (0.2~1)InLC1= I (0.2~1)InLC2= t =t /2(t =15,30,60,120,240,480s)C1 1 1 t =t /4(t =15,30,60,120,240,480s)C2 1 1 ILC2 ≤ ILC1 0.2 0.8 10 1001 In 0.1 1 100 1000 10000 t(s) 200 10 tC1 ILC2 ILC1 tC2
  16. 16. Time/Current Curve of Type M25 , M26 , H26 , P25 and H26 intelligent controller for Load-monitoring pattern one ·10· 1.0 GENERALDESCRIPTION 0.2 0.8 10 1001 In 0.1 1 100 1000 10000 t(s) 10 60 0.4 ILC2 ILC1 tC1 tC2 I (0.2~1)InLC1= I (0.2~1)InLC2= t =t /2(t =15,30,60,120,240,480s)C1 1 1 t =60sC2
  17. 17. 2.0 ACCEPTANCE Check the type and specification of the breakers upon receiving. Remove the external package carefully in order not to destroy the breakers. 3.0 STORAGE, TRANSPORTATION AND WEIGHT The breaker is packed with wooden case and fixed on wooden crate by screws. If the breaker is stored for a short period, please put it in the dry place with ventilation and cover it with waterproof oilcloth. Notice: ① Please put the breaker in the dry place without dust (the ambient temperature is from -25℃ to +55℃ , the relative humidity is not more than 95% at 25℃) and corrosion of chemical gas. ②The breaker should be open and put into the wooden case, the charging indicator (see Fig.1-1, Fig.1-2 Preface) is at the position of DISCHARGED. ③Put the breaker or base on horizontal wooden stand (provided by the factory). ④Don't pile up breakers. 3.1 STORAGE Put the breaker on the wooden stand horizontally and move it with fork lift. See Fig. 3-1. 3.2 TRANSPORTATION Fig. 3-1 BT2 ·11·
  18. 18. 3.3 WEIGHT See the following table: Unit: kg Type Rated Current BT2-1600 630 800 1000 1250 1600 3 4 3 4 3 4 3 4 3 4 3 4 3 4 ·12· 400 200 BT2-2000 630 800 1000 1250 1600 2000 3 4 3 4 3 4 3 4 3 4 3 4 54.5 59.5 54.5 59.5 54.5 59.5 54.5 59.5 54.5 59.5 56 62 84.9 96 84.9 96 84.9 96 84.9 96 84.9 96 88 100 45 58 45 58 45 58 45 58 45 58 45 58 45 58 3.0 STORAGE, TRANSPORTATION AND WEIGHT Pole Number Fixed Draw-out 28.8 36.5 28.8 36.5 28.8 36.5 28.8 36.5 28.8 36.5 28.8 36.5 28.8 36.5
  19. 19. BT2-4000 2000 2500 2900 3200 3600 4000 4000 5000 3 4 3 4 3 4 3 4 3 4 3 4 66 84.5 66 84.5 66 84.5 66 84.5 66 84.5 66 84.5 113.5 141.5 113.5 141.5 113.5 141.5 113.5 141.5 113.5 141.5 113.5 141.5 3 4 3 4 2000 2500 3 4 3 4 1250 1600 BT2-2500 3 4 3 4 3 4 BT2-6300 6300 ·13· 65 78 95 110 65 78 95 110 65 78 95 110 65 78 95 110 135 166 227 280 135 166 227 280 135 166 227 280 3.0 STORAGE, TRANSPORTATION AND WEIGHT Unit: kg Type Rated Current Pole Number Fixed Draw-out
  20. 20. 4.0 UNPACKING AND NOTICE 4.1 UNPACKING ·14· Fig. 4-2 Fig. 4-1 ① ② ④ ③ ③
  21. 21. Unscrew the cross screws ① (16 or 20 pieces) around the under part of the wooden case, lift the wooden case and remove it ( See Fig. 4-1); As for fixed breaker, just remove four STC4.8-C Screws together with washers for fixing the breaker in the wooden stand ③, then move it away from the stand; As for draw-out breaker (See Fig. 4-2), turn the handle to pull out the main body till it is obstructed (See7-3 for details). Lift up the main body from the draw-out socket and move it away. Then remove four nuts of M10 and washers for fixing the socket with the wooden stand at the bottom of draw-out socket in order to separate the socket from the wooden base. (Please make sure the nuts and washers are already removed from the draw-out socket) Put the main body back into the draw-out socket and finish the operations. (See7.3 for details) ④ ③ Check the following settings on the data plate, make sure they will satisfy your requirements while making order. Voltage of Shunt Release; 2. Voltage of Power-driven Operating Mechanism; 3. Voltage of Closing electro-magnet; 4. Voltage of Intelligent Controller; 5. Voltage and Delayed Time of Under- voltage Release; 6. Type of Auxiliary Switch Check the items in package according to the packing list. Do read the operation manual before the installation, operation and maintenance. 4.2 ITEMS TO CHECK BEFORE OPERATION 5.0 INSTALLATION Put the breaker in the dry place where there is no dust, corrosive gas and explosive medium and prevent it from striking. If the environment condition can’t be satisfied, protection grade of the switchgear should be upgraded. Requirements of temperature, humidity and elevation see the following table: 5.1 ENVIRONMENT CONDITION Item Ambient Temperature Relative Humidity Elevation Norm -5℃~+40℃ and the average is no more than +35℃ within 24 hours The relative humidity of the gas is no more than 50% at the maximum temperature of 40℃. It may be higher at the lower temperature, for example, 90% at +20℃. Special measures should be taken to prevent the breaker from dew caused by temperature change. ≤2000m ·15· 4.0 UNPACKING AND NOTICE
  22. 22. Check insulation resistance of the breaker with megohm meter of 1000VDC, the value should be no less than 20MΩwhen the ambient temperature is 25℃±5℃ and the relative humidity is 50%~70%. Place to be tested: test the resistance between each phase and between phase and framework when the breaker is closed; test the resistance between the incoming wire and outgoing wire for each phase when the breaker is open. 5.2 PREPARATION Take the main body out of the draw-out socket, then install the socket into the switchboard, fix the socket with four screws of M10 (with washers) (See Fig. 5-1). The applied torque is from 17.7 N. m to 22.6N. m. At last put the main body into the socket. 5.3 INSTALLATION OF DRAW-OUT BREAKER Fig. 5-1 Put the breaker into switchboard, fix it with four screws of M10 (with washers). The applied torque is from 17.7N. m to 22.6N. m (See Fig. 5-2) 5.4 INSTALLATION OF FIXED BREAKER Fig. 5-2 ·16· 5.0 INSTALLATION Place for fixing the socket
  23. 23. Clean and dry the grounding point with cloth before the grounding of fixed and draw-out breakers. ① Grounding of fixed breaker Fix the PE cable on the grounding busbar of switchboard with M10 screw directly, cross section of the cable see IEC 60439-1. 6.2 APPLIED TORQUE WHEN BUSBAR IS IN CONNECTION WITH WIRING TERMINALS 6.0 ELECTRICAL WIRING Electrical wiring must be done by the professional technicians. M10 M12 M16 17.7~22.6 31.4~39.2 78.5~98.1 35.4~45.2 62.8~78.4 157.0~196.2 6.3 GROUNDING ·17· 6.1SCHEMATICDIAGRAMFORSECONDARYCIRCUITTERMINALSOF BT2-1600 CIRCUITBREAKER Diameter of Screw Applied torque N.m with spring spacer Applied torque N.m with flat spacer Insert the slotted point screw driver (Φ3) into the square hole of the connector insert the conductor wire into the round hole and at last remove the screw driver
  24. 24. Draw-out 6.4 POWER LOSS AND DERATING COEFFICIENT 6.4.1 Power Loss The power loss is the wastage measured by which the circuit breaker is electrified with frame current Inm (environmental temperature +40 ).℃ 6.4.2 Derating Coefficient The following table shows continual current-loading capacity of circuit breakers at different ambient environmental temperature and under the conditions of the satisfaction of conventional heating in IEC 60947-2 ·18· BT2-1600 BT2-6300 285 874 315 924 BT2-2000 BT2-2500 BT2-4000 795 854 146 445 161 492 +40℃ +45℃ +50℃ +55℃ +60℃ 1Inm 1Inm 1Inm 0.97Inm 0.99Inm 0.96Inm 0.91Inm 0.96Inm 0.90Inm 0.87Inm 0.90Inm 0.86Inm 0.82Inm 0.87Inm 0.80Inm 1Inm 1Inm 0.95Inm 0.93Inm 0.89Inm 0.87Inm 0.85Inm 0.82Inm 0.78Inm 0.75Inm Inm=2000A Inm=1600A Inm=2500A Inm=4000A Inm=6300A 6.0 ELECTRICAL WIRING Power Loss (W) Type Fixed Ambient environmental temperature Continual current- loading capacity ② Grounding of draw-out breaker Fix the PE cable on the grounding busbar of switchboard with the grounding screw on the left side plate, cross section of the cable see IEC 60439-1
  25. 25. The specifications of copper bars in the above table are introduced under which the circuit breakers by open installation are at maximum ambient temperature of 40 and satisfy the conventional heating condition in IEC60947-2℃ 6.5 SPECIFICATIONOF THECOPPER BUSBARWIREDINTHE PRIMARY CIRCUIT OF DRAW-OUT BREAKER ·19· Size(mm×mm) 630 630 400 200 2 2 2 2 3 50 5× 20 5× 50 5× 800 800 2 60 5× 1000 1000 2 60 5× 1250 1250 1250 3 4 3 60 5× 60 5× 1600 1600 1600 2 2 60 10× 60 10× 60 10× 2000 2000 2000 2000 3 3 3 60 10× 50 10× 60 10× 100 5× 2500 2500 4 4 100 5× 2900 3 100 10× 3200 4 100 10× 3600 4 6 8 100 10× 4000 4000 5000 6300 4000 6300 5 5 100 10× 100 10× 100 10× 100 10× Rated Frame Current Inm(A) Rated Current In(A) 2500 1600 1 1 40 5× 40 5× 50 5× 40 5× 6.0 ELECTRICAL WIRING Busbar specification Amount 6.4.3 Derating capacity for high altitude If altitude is over 2000m, the electrical performance of breaker could be corrected as follows: Altitude(m) Power frequency with stand voltage(V) Correction factor for working current 2000 3500 1 3000 3150 0.93 4000 2500 0.88 5000 2000 0.82
  26. 26. ·20· 6.0 ELECTRICAL WIRING
  27. 27. ·21· 6.0 ELECTRICAL WIRING
  28. 28. ·22· 6.0 ELECTRICAL WIRING
  29. 29. ·23· 6.0 ELECTRICAL WIRING
  30. 30. 7.0 OPERATION 7.1 Charging Operation Manual charging operation Turn the energy-charging handle up and down for several times (about 6-7 times) till there isn t any feeling of repulsion. ① ’ Fig. 7-1 ② “ ” “ ” As the charging operation finishes, Charged/Discharged indicator will be at Charged position. Power-driven charging operation As the control circuit is electrified, power-driven charging operation will start automatically (the control circuit has already charged automatically in advance) 7.2 On and off operation ·24· 7.2.1 Manual switching on and off Switching-on As the circuit breaker is charged and switched off, and when ready-for-switching-on indicates OK , push the black button (See Fig. 7-2), the circuit breaker will be switched on and On/off indicator shifts from red to green . ① “ ” “ ” “ ” “Ο” “ ” BT2-1600 Circuit Breaker BT2 with frame current of 2000A and above
  31. 31. Switching-off As the circuit breaker is switched on, push the red button (See Fig. 7-3), it will be switched off at once. At this time, On/off indicator should be at the position of red . ② “Ο” “ ” “Ο” Fig. 7-2 Note: When switching-off lock mechanism is installed, it has to be unlocked before the above operation. Fig. 7-3 ·25· 7.2.2 Power-driven switching on and off Switching-on As the circuit breaker is charged and switched off, it can be switched on by providing the closing electro-magnet with rated voltage. Switching-off As the circuit breaker is switched on, it can be switched off by providing the shunt release with rated voltage. ① ② 7.0 OPERATION BT2-1600 Circuit Breaker BT2-1600 Circuit Breaker BT2 with frame current of 2000A and above BT2 with frame current of 2000A and above
  32. 32. 7.3 OPERATION OF DRAW-OUT BREAKER 7.3.1 Operation of BT2-1600 draw-out circuit breaker 7.3.1.1 Push the main body into the socket Pull out the slideway, See Fig. 7-4① Fig. 7-4 Put the main body on the slideway, See Fig. 7-5, and push it inside the socket till it can't be pushed any more, See Fig. 7-6. ② Fig. 7-6 ·26· Fig. 7-5 7.0 OPERATION
  33. 33. Push the slideway into the socket, See Fig. 7-7③ Fig. 7-7 Pull out of the rocker from its storage hole and fully plug it into the hole at the bottom of draw-out socket, move unlock button to the left side, See Fig. 7-8 ④ “ ” ·27· Fig. 7-8 7.0 OPERATION
  34. 34. Turn the rocker in clockwise. When the indicator is at the position of test , the circuit breaker will be locked automatically and the rocker can not be turned. The unlock button has to be moved to the left, and the rocker continues to be turned in clockwise. When the indicator is at the position of connected , the circuit breaker will be locked automatically ,pull out the rocker and put it back to the original place, See Fig. 7-9 ⑤ “ ” “ ” Fig. 7-9 Fig. 7-10 ·28· 7.0 OPERATION 7.3.1.2 Pull out the main body Move the unlock button in order to unlock the mechanism at the position of connected at first, then turn the rocker to move the main body from connected to separated (turn the rocker in counter clockwise, notice in this process: the button is locked automatically at the position of test , the unlock button has to be moved in order to pull out the main body), when the position indicates separated and it is locked, the rocker can be pulled out. ① “ ” “ ” “ ” “ ” “ ”
  35. 35. Pull out the slideway, See Fig. 7-11② Pull the main body out of the draw-out socket, See Fig. 7-12, and take out the main body, See Fig. 7-13 ③ Push the slideway back into the socket, See Fig. 7-14④ ·29· Fig. 7-11 Fig. 7-12 Fig. 7-13 Fig. 7-14 7.0 OPERATION
  36. 36. Lock catch Fig. 7-15 Fig. 7-16 ·30· 7.3.2.1 Push the main body into the socket ① Press the lock catch with thumb, pull out the slideway till it can't be moved ② Put the main body on the slideway as shown in Fig. 7-15, note that the main body should be stuck right on the slideway. 7.3.2 Operation of draw-out BT2-2000 circuit breaker with frame current 2000 and above '③ “ ”Push the main body inside the socket till it can t pushed any more and click occurs, See Fig. 7-16 7.0 OPERATION
  37. 37. Fig. 7-17 Fig. 7-18 ·31· 13 17 13 15 16 7.0 OPERATION ④ Pull out of the rocker from its storage hole 16 and fully plug it into the operation hole 15 at the bottom of draw-out socket, push “unlock button” 13 to the left side, See Fig. 7-17 ⑤ Turn the rocker in clockwise. When the indicator 17 is at the position of “test” , the circuit breaker will be locked automatically and the rocker can not be turned. The unlock button 13 has to be pushed to the left, and the rocker continues to be turned in clockwise till it can't be moved. When the indicator is at the position of “connected”, the rocker can be pulled out to the original place. 7.3.2.2 Pull out the main body ① Move the “ unlock button” in order to unlock the mechanism at the position of “ connected” at first, then turn the rocker to move the main body from “ connected” to “separated” (turn the rocker in counter clockwise, notice in this process: the button is locked automatically at the position of “test”, the “unlock button” has to be moved in order to pull out the main body)
  38. 38. Fig. 7-19 Fig. 7-20 Fig. 7-21 ·32· Lock catch 7.0 OPERATION ② After the rocker is pulled out, press the lock catch to pull out the main body as shown in Fig. 7-20, note that when the main body is pulled out, prevent it from pouring out and falling due to forward move of centre-of-gravity. ③ Take the main body out of the draw-out socket as shown in Fig. 7-21, then push the slideway back into the socket.
  39. 39. 7.4LOCK ATTHE POSITION OF“SEPARATED”BY SAFETYPADLOCKMECHANISMFORTHE DRAW-OUT SOCKET Fig. 7-22 ·33· 7.0 OPERATION Operating process as follows: ① Pull out the locking stick as shown in the Fig; ② Pierce the stick through the padlock, at this time, the circuit breaker can't be moved from “separated” to “test” or “connected”. Unlock button Three-position indication Note: the padlock should be provided by users themselves. “ ”Separated position Safety padlock mechanism BT2-1600 Circuit Breaker BT2-2000 and above “ ”Separated position Safety padlock mechanism Unlock button Three-position indication
  40. 40. 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER 8.1 SETTING AND USE OF TYPE L25 INTELLIGENT CONTROLLER 8.1.1 Panel illustrations 1. Light columnar indication of loading rate (%Ir ) 2. Indication of controller power supply 3. Indication of long-time delayed fault 4. Indication of short-time delayed fault 5. Indication of instantaneous fault 6. Adjustment of instantaneous operating current 7. Adjustment of short-time delayed current 8. Clear button 9. Adjustment of imitative test current 10. Test terminal (for the Factory s testing and checking) 11. Test button 12. Adjustment of short-time delayed time 13. Adjustment of long-time delayed time 14. Adjustment of long-time delayed current 15. Indication of alarm and trip 1 “ ” ’ ·34· 1 2 3 4 5 6 7 8 9 1011 12 13 14 15
  41. 41. 8.1.2 Setting of protection parameters Parameters of the intelligent controller can be set in the network while the auxiliary electric source is provided by controller’s power supply ( Wiring pattern see Chapter 6.6) For example: Rated current In is equal to 2500A; the parameters such as Ir =0.8In, t =480s; Ir =8Ir , t =0.2s; Ir =10Ir orginally set can be changed as follows: Ir =1750A, t =60s; Ir =14kA, t =0.2s (the function of inverse time protection I t should be cancelled); Ir =17.5kA Operate as follows: Convert the above current settings into the multiple of In (or Ir ) so that it will be easy to be adjusted. Ir =0.7In, t =60s Ir =8Ir , t =0.2s (I t OFF) Ir =10Ir Turn the knob to the target point with screw driver, See Fig. Below 1 1 2 1 2 3 1 1 1 2 2 2 3 1 1 1 2 1 2 3 1 2 Note: New settings will be valid after 5 seconds. In case that fault happens within this period, Please operate the circuit breaker in terms of the original settings. 8.1.3 Test Push “test” button to check the setting of test current If only checking current-time feature of the controller: make the circuit breaker be switched off before test with auxiliary power supply. If checking current-time feature of the controller and the operation of operating mechanism at the same time: make the circuit breaker be switched on before test. ·35· 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER trip test clear test
  42. 42. For example: ① Set the test current on 1.5In as shown in Fig. Above, push the test button once again, the delayed operating time should be within the range of t ’(stipulated time)±15%. Note: t ’ (stipulated time) must be converted. In this case, if the value of Ir (equal to 0.7In) and the value of t (equal to 60s) is adjusted, put the value of Ir and the value of t into the formula: (1.5Ir ) t =(1.5Ir ) t ’, the value of t ’ can be worked out. ② Set the test current on 10In, then I will be 10 multiple with 2500, equal to 25kA which keeps within the range of instantaneous prection Ir . Press test button and the circuit breaker will operate at once. ③ Push the button of “clear” and “RESET” after test in order to operate the circuit breaker regularly. Note: In order to avoid mistakes, turn the knob for setting the test current to the right value prior to each test, and the setting is only effective within 2 minutes. If over 2 minutes, turn the knob once again even though test current is the same. 8.1.4 Indication of alarm and trip Light columnar indication of Real-time current (loading rate in percentage of Ir1), indication of alarm and trip see the Fig. Below. 1 1 1 1 1 1 1 2 1 1 2 1 1 3 A ○ ● ○ ● ·36· 90% 50% 20% 90 105 %Ir1 I1 I2 I3 IN Ir2 Ir2 Ir3 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER Light off (real-time current under A line) Yellow light on (real-time current above A line and under 105%) Yellow Light flash (real-time current above 105%) Red light on (tripped) The corresponding light will be on after the circuit breaker is tripped. Power indicator Tripped/alarm
  43. 43. 8.2 SETTING AND USE OF TYPE M25, M26 AND H26 INTELLIGENT CONTROLLER 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 8.2.1 Panel illustrations 8.2.1.1 Type M25 and M26 Panel ·37· U12 U13 U31 MIN test V I1 I2 I3 MAX A kA S tr ip Ir1 Ir2 Ir3 MEM ILC1 ILC2 M25 Inetlligent Controller fault 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER 8.1.5 Resume operation of the circuit breaker To re-operate the cirucit breaker after being tripped due to fault: press clear button and press RESET button on the panel, then the circuit breaker will be switched on. “ ” “ ” Three phases of line voltage and indication of mimimum line voltage in operation Voltage indication screen Voltage unit Test indication Indication of three phases current, neutral phase current, earthing fault current and maximum phase current in operation Current and time indication screen Current unit A Current unit kA Time unit Earthing fault indication, overload long-time delayed fault indication, short-circuit short-time delayed fault indication, instantaneous fault indication Indication of earthing fault current setting (with alarm) Indication of long-time delayed current setting (with alarm) Indication of long-time delayed operating time Indication of short-time delayed current setting (with alarm) Indication of short-time delayed operating time setting Indication of instantaneous current setting Indication of earthing fault operating time setting Load mointoring signal 2 Load mointoring signal 1 Memory indication Consecutive decrease of setting values "mem"button Wearing indication button "clear" button Power supply socket for test (DC24V) "non-trip" test button "trip" test button "inspect fault" button Current indication button Voltage indication button "set" button Consecutive increase of setting values Trip indication Note: M25 has the same function with M26 except without earthing fault protection. trip test clear test U12 U13 U31 MIN V I1 I2 I3 MAX A kA S Ir1 Ir2 Ir3 ILC1 ILC2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 2627 28 29 30 31 32 33 IG Ir4 M26 Inetlligent Controller test fault trip MEM
  44. 44. 8.2.1.2 Type H26 panel 8.2.2 Current, voltage (optional) indication Fig. 8-1 ·38· 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. Three phases of line voltage and indication of mimimum line voltage in operation Voltage indication screen Voltage unit Test indication Indication of three phases current, neutral phase current, earthing fault current and maximum phase current in operation Current and time indication screen Current unit A Current unit kA Time unit Earthing fault indication, overload long-time delayed fault indication, short-circuit short-time delayed fault indication, instantaneous fault indication Indication of earthing fault current setting (with alarm) Indication of long-time delayed current setting (with alarm) Indication of long-time delayed operating time Indication of short-time delayed current setting (with alarm) Indication of short-time delayed operating time setting Indication of instantaneous current setting Indication of earthing fault operating time setting Load mointoring signal 2 Load mointoring signal 1 Memory indication Consecutive decrease of setting values "mem" button Wearing indication button "clear" button Power supply socket for test (DC24V) "non-trip" test button "trip" test button "inspect fault" button Current indication button Voltage indication button "set" button Consecutive increase of setting values Trip indication Communicaion Station No. Remote control Current meter Voltage meter Current meter set U I inspect fault trip non-trip % set U I inspect fault trip non-trip clear mem test test H26 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 2627 28 29 30 31 32 33 34 35 36 COMM U12 U13 U31 MIN I1 I2 I3 MAX A kA S Ir1 Ir2 Ir3 ILC1 ILC2 IG Ir4 IN V MEM t rip fault test ADDR REM H26IntelligentController
  45. 45. 8.2.2.1 Current meter The maximum current value in three phases will display in operation [the current value as shown in the Fig. 8-1 indicated in the current meter is the maximum current I in three phases(light of I and MAX on), equal to 1600A. Press the button of “I” to display I (four poles), I (Type M26 and H26) and the real-time value of I ,I ,I in circulation, the maximum real- time value will display again after 5 minutes without operation. 8.2.2.2 Voltage meter The minimum voltage value of three phases will display in operation [the voltage value as shown in the Fig. 8-1 indicated in the voltage meter is the minimum voltage U in three phases (Light of U and MIN on), equal to 380V]. Press the button of “U” to display U , U and U in circulation, the minimum real-time value will display again after 5 minutes without operation. 8.2.3 Setting of protection parameters Parameters of the intelligent controller can be set in the network, but at this time the load current should be less than the setting current. There are two ways of power supply for the controller: (1) auxiliary power supply; (2) DC24V input from the panel. Operate as follows: (No earthing fault protection for Type M25, without the setting of Ir and t ) (1) Display: Press “set” button to choose the desired parameters such as Ir , t , Ir , Ir , t , I and I . When the light is on, the corresponding value will display on the screen. (2) Adjustment: Press “Δ” (increase by degrees) or “ ” (decrease by degrees) button, adjust the displayed value to the desired or approximate value. Press “Δ”button, Ir and Ir can be “OFF”, short-circuit short-time delayed and short-circuit instantaneous protection will be shut. (3) Save: Press “mem” button, the corresponding light will flash once, which means the setting value has been saved. [Example] Take the controller with In=1600A as an example; the original setting values of Ir =1600A, t =30s; Ir =9.6kA, t =0.2s; Ir =19.5kA; Ir =1200A, t =0.4s. 2 2 N G 1 2 3 31 31 12 23 31 4 4 1 1 3 4 4 LC1 LC2 2 3 1 1 2 2 3 4 4 △ ·39· 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
  46. 46. ·40· 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER a) When the control is electrified, the screen will display 0 for the operating current of the main circuit. “ ” b) Press "set" button and when the "Ir " light is on, the screen w il l di sp la y t he original setting value of 1600A. 1 c) Adjustment: Press button, the value on the screen will decrease 20A by degrees till the screen displays 1380A. “ ▽ ” d) Press "mem" button and the new setting will take effect. BT2-1600 1. The seting value of Ir is equal to 1380A (t is still 30s), operate as follows:1 1 set U I trip inspect fault mem clear non-trip MEM trip fault test set U I trip inspect fault mem clear non-trip MEM trip fault test set U I trip inspect fault mem clear non-trip MEM trip fault test set U I trip inspect fault mem clear non-trip MEM trip fault test
  47. 47. ·41· 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER a) When the control is electrified, the screen will display 0 for the operating current of the main circuit. “ ” b) Press "set" button and when the "Ir " light is on, the screen w il l di sp la y t he original setting value of 1600A. 1 c) Adjustment: Press button, the value on the screen will decrease 20A by degrees till the screen displays 1380A. “ ▽ ” d) Press "mem" button and the new setting will take effect. BT2-2000 and above set U I tripinspect fault mem clear non-trip MEM trip fault test % set U I tripinspect fault mem clear non-trip MEM trip fault test % set U I tripinspect fault mem clear non-trip MEM trip fault test % set U I tripinspect fault mem clear non-trip MEM trip fault test % In=1600A In=1600A In=1600A In=1600A
  48. 48. 2. The re-setting value of t is equal to 0.3s and the function of I t is shut off, operate as follows:2 2 ·42· set U I trip inspect fault mem clear non-trip MEM trip fault test 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER a) Press "set" button and when the "t " light is on, the screen will di sp la y t he original setting value of 0.2s. 2 b) Adjustment: Press button, the value on the screen will increase 0.1s by degrees till the screen displays the original s et t in g va lu e of OFF 0.3s . “ Δ ” “ ” c) Press "mem" button and the new setting will take effect. BT2-1600 set U I trip inspect fault mem clear non-trip MEM trip fault test set U I trip inspect fault mem clear non-trip MEM trip fault test
  49. 49. ·43· 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER a) Press "set" button and when the "t " light is on, the screen will di sp la y t he original setting value of 0.2s. 2 b) Adjustment: Press button, the value on the screen will increase 0.1s by degrees till the screen displays the original s et t in g va lu e of OFF 0.3s . “ Δ ” “ ” c) Press "mem" button and the new setting will take effect. BT2-2000 and above set U I tripinspect fault mem clear non-trip MEM trip fault test % set U I tripinspect fault mem clear non-trip MEM trip fault test % set U I tripinspect fault mem clear non-trip MEM trip fault test % In=1600A In=1600A In=1600A
  50. 50. 3. The earthing fault protection feature (Only for Type M26 and H26) is shut off, operate as follows: Note: All protection parameters can be adjusted by following the above steps. Check: After the setting operation is over, press “clear” button and “set” button in succession to check the displayed new value of protection parameters, which should be the same as the desired values. (Note: The controller will recover its displaying of current if no buttons are pressed within 10 seconds.) ·44· 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER a) Press "set" button and when the "t4" light is on, the screen will di sp la y t he original setting value of 0.4s. b) Adjustment: Press button till the s cr een will display OFF . “ Δ ” “ ” c) Press "mem" button and the new setting will take effect. BT2-1600 set U I trip inspect fault mem clear non-trip MEM trip fault test set U I trip inspect fault mem clear non-trip MEM trip fault test set U I trip inspect fault mem clear non-trip MEM trip fault test
  51. 51. Note: All protection parameters can be adjusted by following the above steps. Check: After the setting operation is over, press “clear” button and “set” button in succession to check the displayed new value of protection parameters, which should be the same as the desired values. (Note: The controller will recover its displaying of current if no buttons are pressed within 10 seconds.) ·45· 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER a) Press "set" button and when the "t4" light is on, the screen will di sp la y t he original setting value of 0.4s. b) Adjustment: Press button till the s cr een will display OFF . “ Δ ” “ ” c) Press "mem" button and the new setting will take effect. BT2-2000 and above set U I tripinspect fault mem clear non-trip MEM trip fault test % set U I tripinspect fault mem clear non-trip MEM trip fault test % set U I tripinspect fault mem clear non-trip MEM trip fault test % In=1600A In=1600A In=1600A
  52. 52. 8.2.4 Test The protection characteristics including long-time delay, short-time delay, instantaneous and earthing fault can be tested. There are two kinds of testing ways: “trip” test and “non-trip” test. As for the “trip” test, set the current value at which the circuit breaker will trip, press “trip” button and the circuit breaker should be switched off (In general, this test is carried without load); As for the “ non-trip” test, set the current value at which the circuit breaker will trip, press “non-trip” button and the circuit breaker shouldn’t be switched off. [Example] Test of long-time delayed operating features (1.5Ir ) 1. As first, check the original setting value of Ir and t , operate as follows: 1 1 1 ·46· 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER a) Press "set" button and when the "Ir " light is on, the screen will displa y the original setting value of 1380A. 1 b) Press set button and when the t light is on, the screen will display the original setting value of 30s. “ ” “ ”1 a) Press "set" button and when the "Ir " light is on, the screen will displa y the original setting value of 1380A. 1 b) Press set button and when the t light is on, the screen will display the original setting value of 30s. “ ” “ ”1 BT2-1600 BT2-2000 and above set U I trip inspect fault mem clear non-trip MEM trip fault test set U I trip inspect fault mem clear non-trip MEM trip fault test set U I tripinspect fault mem clear non-trip MEM trip fault test % set U I tripinspect fault mem clear non-trip MEM trip fault test % In=1600A In=1600A
  53. 53. 2. The setting of parameters for test a) Press "set" button and when the "Ir " ligh t is on, th e screen will display the original setting value of 1380A. 1 b) Press set button and when the t light is on, the screen will display the original setting value of 30s. “ ” “ ”1 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER a) Press "set" button and when the "Ir " ligh t is on, th e screen will display the original setting value of 1380A. 1 b) Press set button and when the t light is on, the screen will display the original setting value of 30s. “ ” “ ”1 BT2-1600 BT2-2000 and above ·47· set U I trip inspect fault mem clear non-trip MEM trip fault test set U I trip inspect fault mem clear non-trip MEM trip fault test U I tripinspect fault mem clear non-trip MEM trip fault test % set U I tripinspect fault clear non-trip MEM trip fault test % In=1600A In=1600A
  54. 54. 3. Test operation ·48· 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER a) Press non-trip b u t t o n a n d t h e corresponding light of test will be on. “ ” “ ” b) The screen will display 0 and the corresponding light flashs. With the setting time of 30s elapsed, the corresp onding ligh t of trip , Ir1 and fault will be on, which means the completion of test operation. “ ” “ ” “ ” a) Press non-trip b u t t o n a n d t h e corresponding light of test will be on. “ ” “ ” b) The screen will display 0 and the corresponding light flashs. With the setting time of 30s elapsed, the corresp onding ligh t of trip , Ir1 and fault will be on, which means the completion of test operation. “ ” “ ” “ ” BT2-1600 BT2-2000 and above set U I trip inspect fault mem non-trip MEM trip fault test set U I trip inspect fault mem non-trip MEM trip fault test clear set U I tripinspect fault non-trip MEM trip fault test % non-trip set U I tripinspect fault MEM trip fault test % mem clear In=1600A In=1600A
  55. 55. 4. Checking the test result a) With the completion of test operation, press “inspect fault” button and “I” button till the light of “I ” (“I ”, “I ”) is on (interval between two steps should be within 5s), at the time which the screen displays the imitative breaking current value of 2060A. b) Press “I” button again, the light of “A” will be off and the light of “s” will be on, at the time which the screen displays the imitative operating time value of 30.60s within the range of the setting value: t (30s)±15%, which keeps in accordance with the setting operating features. 1 2 3 1 BT2-1600 BT2-2000 and above 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER ·49· U I trip inspect fault mem non-trip MEM trip fault test clear U I trip inspect fault mem non-trip MEM trip fault test clear U I tripinspect fault non-trip trip fault test % MEM mem clear U I tripinspect fault non-trip trip fault test % MEM mem clear In=1600A In=1600A
  56. 56. 8.2.6 Breaking due to fault After the circuit breaker is tripped due to fault, the controller will display fault current value, operating time, fault phase, fault type and tripping state. The data on panel as shown in the Fig.: ● “trip” light is on ● Breaking current:2060A ● Fault phase: phase A when “I1” light is on ● Fault type: overload long-time delay ● “Ir ” light is on1 8.2.5 Alarm indication 1. Load-monitoring alarm 2. Overload (fault) alarm ·50· 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER a) The operating current of monitored load reaches the setting values of I and I , the light of I and I will flash. LC1 LC2 LC1 LC2 “ ” “ ” b) After the setting values of delayed time tc1 and tc , the c on t r o l le r wi ll output the contact signal and the light of I and I will be s w i t c h ed f r o m flashing to being lightened. 2 LC1 LC2 “ ” “ ” When the operating current is within the range of 1.05Ir to 1.20Ir , the light of Ir will flash. 1 1 1“ ” BT2-1600 BT2-2000 and above MEM trip fault MEM MEM U I tripinspect fault non-trip trip fault test % MEM mem clear set U I trip inspect fault mem non-trip MEM trip fault test clear set In=1600A
  57. 57. Press “inspect fault” button and then press “I” button ·51· 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER 8.2.7 Fault memory After the circuit breaker is tripped due to circuit fault, the controller will display fault type, fault phase and breaking current value at once. If the breaking time should be checked, operate as follows: press “clear” button BT2-1600 BT2-2000 and above BT2-1600 BT2-2000 and above U I trip inspect fault mem non-trip MEM trip fault test clear set U I tripinspect fault non-trip trip fault test % MEM mem clear set U I trip inspect fault mem non-trip clear MEM trip fault test U I tripinspect fault non-trip trip fault test % MEM mem clear In=1600A In=1600A
  58. 58. Press “I” button again to display the breaking time 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER ·52· trip fault test MEM 8.2.8 Resume operation To resume operation after the circuit breaker trips due to fault: press “clear” button, press “reset” button on the panel and then the circuit breaker will be switched on. 8.2.9 Other ① Contact wearing indication Press "inspect fault" to display the value (10 on the screen) which stands for the wearing degree of the contact. Press "%" to display the value (10 on the screen) which stands for the wearing degree of the contact. BT2-1600 BT2-2000 and above U I trip inspect fault non-trip MEM trip fault test clear set U I tripinspect fault non-trip % clear set trip fault test MEM In=1600A
  59. 59. ·53· 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER ② Self-diagonosis If the screen displays " E r r 8 " , t h e r e i s something wrong with the program saving. If the screen displays Err9 , the extra high temperature inside of the controller exceeds 80 5 . “ ” ℃± ℃trip fault test MEM trip fault test MEM 8.2.10 BT2-1600 BT2-2000 and above U I trip inspect fault non-trip clear set U I tripinspect fault non-trip % clear set Press the "set" button until the "ADDR" light is on ,meanwhile, when the "current and time screen"displays"A××× ","b×××"and"P ×",it represents entering of communication address, baud rate and odd-even parity bit adjustment state,then press"△"" "to adjust, after adjustment,press"mem"button to save the setting. △ The communication parameter adjustment of the H26 Controller
  60. 60. ·54· 8.3 Characteristic setting and use of P25 and P26 controller Refer to BT2 Intelligent Universal Circuit Breaker-P25 & P26 Intelligent Controller- Operation Manual for details. 8.4 Communication function of H26, P25 and P26 controller “Four remote function could be realized through a communication ports by upper devices. It could transmit datas of real-time current, voltage, fundamental current, fundamental voltage, power, power factor, energy, frequency, harmonic voltage's distortion and total harmonic voltage's and current’ s distortion(only current and voltage for H26); read and modify setting values of breakers; read the product code, type, alarm signal, fault record, position of main body, states of ready-for switching on and position of close, etc; remote open or close breaker. ① When the breaker is communicating with the upper devices, “Communication” on the controller will flash. ② When “Remote” is lighten on, upper devices could remote-control the breaker(open, close or modidy setting values). If users want to set values on the breaker, “Clear” should be pressed and users should wait until the “Remote” is lights out. ③ Press addresses(site No., baud rate and parity check bit) of breaker could be referred by pressing Voltage Display button on the control panel of breaker. ● Parameters of Serial Port ① RS485 interface and ModBUS-RTU mode are applied(please contact with the producer for details); ② Baud rate: 19200bps(1200, 2400, 4800, 9600 and 38400 are also supported); ③ Communication adress: 1-119; ④ Frame format: 1 start bit, 8 bits, 1 stop bit and even check(no check and odd check are supported) ● Note: ① Communication line is twisted pairs shielded line, the cross section area of which is more than 0.34mm . The Max. distance between lines is 1200m. The communication distance could be prolonged by repeaters. ② 1 line could connect 32 communicatable breakers (16 breakers with components of draw- out socket communication module). ③ Parameters of serial port should match with each other so that the upper devices could communicate with breakers, for the communication addresses of breakers in the same communication line is different. ④ Secondary wiring of communicatable breakers should be connected according to Picture 6.6.2(BT2-1600) and 6.6.4(BT2-2000~6300). ● Connection of terminals ” 2 ① Terminal 8 to RS-485, Data+(A); Terminal 10 to RS-485, Data+(B); Terminal 12 to SH. ② Please do correctly connect the communication lines, use shielded cables and avoid closing to strong electricity lines. Terminal 8 10 12 Signal DATA+(A) DATA-(B) SH Function Receive/send data + - connect shielding layer Receive/send data 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
  61. 61. Note: As an option, this accessory is necessory when remote reading of main body postions of draw-out breakers is required. Components of draw-out socket communication module BT2 Moniter computer RS232 RS485 RS232/RS485 Converter DATA+ DATA- Mod BUS BT2 BT2 BT2 Note: ① Please protect the controller against dust, humidity and mechanical damage while setting. ② Make sure Ir1<Ir2<Ir3 while setting parameters again ④ If the circuit breaker trips due to fault, remove the troubles in terms of the indications on the panel before the circuit breaker is in operation again. ③ The following items should be checked by technicians before operating the circuit breaker: whether the setting of parameters is correct, whther the intelligent controller is cleared and resetted, whether the circuit breaker is in normal condition and should be tested. Inspect the circuit breaker while its operation. Get rid of any faults or abnormalities in time. 8.5 Other Functions ① Self-diagnosis: this function is to check and protect the circuit breaker in its operation. Should the temperature inside the controller exceed 80℃±5℃, alarm signal will be send out at once (the controller is still in normal operation) ② Thermal memory: the memory function imitating the feature of bimetal is available when the controller operates due to overload or short-circuit short-time delay in the circuit. The energy stored due to overload will discharge in 10 minutes, while the energy stored due to short-circuit short-time delay will discharge in 5 minutes. During this period, if the circuit breaker is switched on, the delayed operating time will be shortened due to overload or short-time delay. Therefore, the circuit or electrical devices can be protected. ③ Fault memory: the intelligent controller can display fault type, fault phase, fault curernt and breaking time after the circuit breaker breaks due to fault. ④ MCR:Should short-circuit short-time delay happen while the circuit breaker is in the process of being switched on or the controller is initialized by being electrified, the circuit breaker will be switched off instantaneously without time delay. 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER ·55·
  62. 62. When several of circuit breakers are linked together up and down, zone selective interlock can ensure fully-selective protection of circuit breakers at up-stream or down-stream so as to reduce the range of operation by fault and the breaking time of circuit breakers. This function serves for short-circuit short-time delay (I t OFF) and earthing fault protection of circuit breakers. As the sketch shown above, control lines can interlock with other units of circuit breakers equipped with intelligent controllers of Type M25, M26 and H26. After detecting the fault, the intelligent controller (zone 2) will send out a signal to circuit breakers (zone 1) at higher level and check whether the signal of circuit breakers (zone 3) at lower level arrives. If circuit breakers at lower level send out a signal, the circuit breaker will be switched on at the time duration of release delay; if circuit breaker at lower level don’t send out a signal, the circuit breaker will break at once no matter whether the release has the protection of delay. 2 Note: 21, 22, 23 and 24 serve as the wiring terminals of secondary circuit. Busbar Zone1 Circuit Breaker at up-stream level Release delay t2 21 22 23 24 Control line Control line Fault Circuit breaker at down-stream level 21 22 23 24 21 22 23 24 21 22 23 24 ·56· Busbar Release delay t2 Zone2 Control line Control line Busbar Zone3 8.0 SETTING AND USE OF INTELLIGENT CONTROLLER ⑤ Zone Selective Interlock (ZSI) Zone Selective Interlock (ZSI) (for Type M25, M26 and H26 intelligent controller)
  63. 63. 9.0 CHECKING Debug and check the following items in the table: 1 2 3 4 5 6 7 10.0 TRIAL OPERATION Check the following items before its operation: ① Check whether the wiring is correct ② Make sure that terminals connection and screws are fixed firmly ③ Reset button after faulty trip should be in the state of “reset” on the panel of intelligent Do not operate the breaker in the environment of explosive gas, otherwise explosion may happen; Do not operate the breaker in the environment of corrosive gas,otherwise, the insulation and metal parts may be damaged. 10.1 CHECK AND PREPARATION ·57· No. Items to check Procedure Checking operation Operating mechanism Motor-driven operating mechanism Under-voltage release Shunt release Closing electromagnet “ ”Switching-off locking device Auxiliary Switch Charge the breaker and switch it on and off for several times by hand (the under- voltage release should be electrified in advance) Provide the charging motor with power supply, switch the breaker on and off for several times Provide the under-voltage release with power supply, the circuit breaker should be switched on; the circuit breaker should be switched off without power supply of the under-voltage release Provide the shunt release with power supply after the circuit breaker is switched off Provide the closing electromagnet with power supply after the breaker is switched on Switch the breaker off, press the switching-off button while turning the key in counter clockwise, then pull it out Provide the corresponding contact with signal Check whether the mechanism runs smoothly and whether the switching on and off is free and easy Check whether the charging motor works normally without noise; whether the breaker is switched off Check whether the breaker can be switched on normally, whether the indication is correct, whether the breaker is switched off Check whether the breaker can be switched off normally Check whether the breaker can be switched on normally Check whether the breaker can t be switched on by hand or by motor ’ Check whether the signal is normal
  64. 64. controller. ④ Ambient environment is ventilated. ① Confirm that there is no abnomality according to 10.1 before trial operation ② As for the draw-out circuit breaker, the main body should be in the position of “test” ③ The operating mechanism starts to be charged as it is electrified, “Charged/Discharged” indicator is in the position of “ charged” , the under-voltage release has to be eletrified, the window of ready-for-switching-on indicates “OK”, and the circuit breaker is switched on. ④ Press “Switching-on” button on the panel of the circuit breaker (switching on by hand) or the panel of switchgear cabinet (switching on by motor), the circuit breaker should be switched on. 10.2 TRIAL OPERATION 10.0 TRIAL OPERATION 11.0 MAINTENANCE, EXAMINATION AND REPAIR Caution: 11.1 MAINTENANCE Before any maintenance and inspection, the following procedures should be carried out: ① Switch off the main circuit and the secondary circuit of the circuit breaker ② Switch off the breaker and check the spring of the operating mechanism is discharged ③ Pull the main body out of the draw-out socket for the draw-out circuit breaker ● Check whether the ambient environment can meet the general requirements ● Check whether all rubbing and movable parts are lubricated periodically ● Check whether the screw bolt for fixing the breaker with busbar is fixed firmly and whether the contact is fine ● Check the state of dust piling up on the main body and insulation parts of the draw-out socket, and cleaning on schedule ● Check whether the wiring terminals of secondary circuit are connected reliably ● Check whether the intelligent controller displays correctly ● Check whether protection features of the intelligent controller are set correctly ● Check whether ON/OFF indication is correct and reliable ·58·
  65. 65. When the right maintenance is carried out, the circuit breaker can have the following operating performances in the table: Frame current 1600 4000 6300 Rated Current (A) 630 800 1000 1250 1600 2500 2500 2900 3200 3600 4000 Mechanical durability* (times) Without maintenance 15000 10000 10000 10000 10000 10000 30000 30000 30000 30000 30000 30000 30000 20000 20000 20000 20000 20000 10000 10000 10000 AC440V 6500 6500 6500 6500 6500 6500 6500 3000 3000 3000 3000 3000 3000 3000 1500 1500 1500 1500 1500 AC690V 1000 1000 1000 1000 1000 1000 1000 1000 ·59· 2000 2500 630 800 1000 1250 1250 1600 1600 2000 2000 15000 30000 30000 30000 30000 30000 30000 30000 30000 30000 30000 6500 6500 6500 6500 6500 6500 5000 5000 5000 5000 3000 3000 3000 3000 3000 3000 2500 2500 2500 2500 200 400 4000 5000 6300 5000 5000 5000 800 800 800 11.0 MAINTENANCE, EXAMINATION AND REPAIR With maintenance Electrical durability* (times) 11.2 EXAMINATION AND REPAIR ● Check whether all parts of the circuit breaker, such as the insulation parts of the framework, footing, are integral and clean; 15000 15000 15000 15000 15000 15000 15000 15000 15000 15000 15000 15000 15000 15000 15000 *Note: For IEC60947-2,the term" durability"expresses the expectancy of number of operating cycles which can be performed by the equipment before repair or replacement of parts.The consequent test is not intended to be acceptance test for application by the user.
  66. 66. ·60· 11.0 MAINTENANCE, EXAMINATION AND REPAIR △ ● Check whether the base of the breaker is fixed firmly. Should be no vibration in operation; ● Manual operating mechanism for the switching on/off of breaker should be moved flexibly without being stuck. The switching of auxiliary contact of secondary circuit should operate reliably; ● Pull the slideway out or in by turning the rocker manually. The position of “ test”, “separated” and “connected” should be clear and interlocking should be operated reliably ● When the secondary circuit is electrified, shunt, closing electro-magnet, under-voltage release should operate in compliance with stipulations in technical manual of the breaker, power- driven operating mechanism should operate normally; ● The contact system of the arc-chute chamber including contact tips should be complete, silver coating layer should be in good condition, the arc-chute chamber should be cleaned up inside; (Note: Don’t operate the mechanism when the arc-chute chamber is opened) ● The connection between the circuit breaker and busbar should be reliable and screw bolt should be fastened; ● Check whether the surface of connector between the main body and the draw-out socket should be clean and neat to ensure the reliable connection; ● Check the insulated resistance of the breaker with megohm meter of 1000VDC at the ambient temperature of 20℃±5℃, and the resistance should not be less than 20MΩ under the relative humidity of 50~70%; ● Check the setting values of protection features of the intelligent controller; If the controller is electrified with DC 24V, check as follows: Connect with the exclusive tester for Type L25 Controller, press the button “ select” to choose the setting values to check. If the setting values want to be adjusted, please turn the knob. ○ For Type M25, M26 and H26 Intelligent Controller Press the button “Set” and the corresponding setting values will display on LED screen. To modify the setting values, press the button “△”/ ”, then press the button “mem” to save the modifications. Before the breaker is in operation again, check the setting parameters of the controller. At the position of “test”, the secondary circuit is electrified or simulate tripping test with DC24V, make sure that all simulated operations are correct before its regular operation. Check as follows: ○Type L25 Controller 1: Turn the knob “test” to choose the suitable test current (NхIr ); 2: Wait two seconds after step 1, press the button “trip”, and then the controller will be tested and the breaker will be switched off according to the protective curve. ○Type M25, M26 and H26 Controller 1: Press the button “set” to choose the phase current to test; 2: Press the button “△”/ ” to choose the suitable test current; ○ For Type L25 Intelligent Controller “ ○ For Type P25 and P26 controller Press F3 ( protection setting ) to see the setting values of protection characteristics press “enter”, press “ ”/“ ”to adjust the values and then press “enter”. “ 1 △
  67. 67. ·61· 11.0 MAINTENANCE, EXAMINATION AND REPAIR 3: Press the button “trip” to do tripping test or press the button “non-trip” to do non- tripping test; 4: When the test light is on, the controller is being tested. In terms of the test current value within the operating range of LSI protection, the circuit breaker will be switched off (“trip”) or (“non-trip”) only indicates on the panel according to the protective curve. Caution: before replacing accessories, do as follows: ① Cut off all electrical sources including the power supply of the main circuit and the secondary circuits. ② The circuit breaker is switched off and the charging mechanism is discharged. ③ Remove the front cover of the circuit breaker The cover of the breaker should be installed after replacement of the accessories,the breaker can only be operated ofter check. 11.3.1 Replacement of shunt release (f), closing electromagnet (x) and under-voltage release (q) ① Remove the cable connector connecting with shunt release, closing electromagnet and under-voltage release from the wiring terminals of the secondary circuit ② Remove the connector connecting with closing electromagnet, and remove the cover of the control panel of under-voltage release and then the panel. ③ Loosen the mounting screw on the plank of shunt release, closing electromagnet and under- voltage release, and then remove the plank. ④ Remove the shunt release, closing electromagnet and under-voltage release ① Put back the shunt release, closing electromagnet and under-voltage release right onto the appointed place. ② Place the plank and tighten the mounting screw. ③ Link up the closing electromagnet and ready-for-switching-on contact with the connector put the control panel of the under-voltage inside its shell and cover it. ④ Connect the lead wires of shunt release, closing electromagnet and under-voltage release with the corresponding wiring terminals of the secondary circuit, under which the lines and the terminals have the same No. ○ P25、P26 Controller 1. Press F4 → test parameters, choose “I ”、“I ”or“I ”; 2. Set simulation current in the “Current value”; 3. Choose “non-trip”or “trip” in the “Type” to test 4. Press“ESC” and “Yes”to test. 1 N G 11.3 REPLACEMENT OF ACCESSORIES 1. Remove 2. Installation
  68. 68. ·62· 12.0 COMMON FAULT AND SOLUTION Below list the common fault of the circuit breaker in its installing, checking and operating, and then list the possible reasons and solutions: 1 No. Technical problems Trip (the light of fault indication is on) Possible reasons ● Over-load trip (indication light for long-time delay is on) ● Short-circuit trip (indication light for short-time delay or instantaneous is on) ● Earthing fault trip (indication light for earthing fault is on) ● Under-voltage release trip ● Operation of mechanical interlock 1. Check the breaking current value and operating time on the intelligent controller; 2. Analyze the operation of load and electric grid; 3. In case of overload, find out and eliminate the fault at once; 4. If the actual operating current doesn't match with long-time delayed operating current, please modify the setting value of long-time delayed operating current in terms of the actual operating current to make the suitable protection; 5. Press the reset button and switch the breaker on again. 1. Check the breaking current value and operating time on the intelligent controller; 2. In case of short-circuit, find out and eliminate the fault at once; 3. Check the setting value of the intelligent controller; 4. Check whether the breaker is in good condition and can be switched on; 5. Press the reset button and switch the breaker on again. 1. Check the breaking current value and operating time on the intelligent controller; 2. In case of earthing fault, find out and eliminate the fault at once; 3. If there is no earthing fault, check whether the setting vaule is reasonable and whether it can match with the actual current of protective phase; if it can't, modify the setting value of earthing fault; 4. Press the reset button and switch the breaker on again. 1.Check whether the voltage of power supply is lower than 70% Us; 2.Check whether the under-voltage release and control unit operate normally. Check the operation of two pieces of breakers installed with mechanical interlock Inspection and solution
  69. 69. ·63· 2 3 Trip after being switched on No. Technical problems Possible reasons ● Under-voltage release unclosed Unable to be switched on ● Reset button doesn't work ● Draw-out breaker isn't in the right place ● The secondary circuit of draw-out breaker isn't well connected ● Trip at once Delayed trip● Inspection and solution 1. Check whether the under-voltage release is electrified; 2. Check whether the voltage of power supply is lower than 85% Us; 3. Check whether the under-voltage release and control unit operate normally. Press the reset button and switch the breaker on again Turn the draw-out socket to the right place (locked in the position of “ connected” or “test”) Check the contact of the secondary circuit and eliminate errors ● No charging operation in advance ● The breaker is locked because of the operation of mechanical interlock ● Error for the closing electromagnet 1. Check whether power supply for motor control is on and not less than 85% Us; 2. Check whether motor-driven charging mechanism operates normally Check whether the interlock operation of two pieces of breakers is in good condition 1. Check whether the power supply for the closing electro-magnet is equal to 85% Us at least; 2. Check whether there is something wrong with the closing electromagnet, replace it. 1. In case of short-circuit current while switching the breaker on, find out the reason and eliminate it; 2. Check the over-load current in the circuit and eliminate it; 3. Check whether the operating mechanism of the breaker is in good condition; 4. Check whether the setting value of the intelligent controller is reasonable, modify it if necessary; 5. Press the reset button and switch the breaker on again. 12.0 COMMON FAULT AND SOLUTION
  70. 70. ·64· 4 Unable to be switched on 5 Unable to be charged 6 7 8 12.0 COMMON FAULT AND SOLUTION No. Technical problems Possible reasons Inspection and solution The main body can't be pulled out in the position of “separated” for the draw-out breaker The draw-out breaker can't be pushed into the position of connected“ ” The screen on the intelligent controller can't display ● “ ” The breaker can't be operated be remote controll Unable to switch off the breaker with the switching-off button ● ● Unable to charge manually ● Unable to charge by motor ● The lock catch is not pushed down; ● ● The rocker is not pulled out; The breaker is not at the position of complete separation ● The turning mechanism is stuck or the gear of the mechanism is damaged due to the falling objects ● The intelligent controller is not electrified; ● ● ● Input voltage of auxiliary power supply is abnormal; Secondary output voltage of the socket transformer is abnormal; The connection between the secondary output terminal of the socket transformer and the controller is not reliable. 1. Check whether the connection of shunt release circuit is reliable. In case of errors for the release, replace it; 2. Check whether the operating mechanism is out of mechanical failure. 1. Check whether the control voltage for the power supply of motor-driven charging mechanism should be not less than 85% Us and whether the circuit is in good condition; 2. Check whether the motor is in good condition; 3. Errors for the charging mechanism. Push down the lock catch Pull out the rocker Separate the main body from the breaker completely Check whether there are objects falling into the mechanism and check the conditions of rack and gear 1. Check whether the intelligent controller is well electrified; 2. Cut off power supply for the intelligent controller, then to be electrified. Should the errors still appear, replace the intelligent controller.
  71. 71. ·65· 9 10 Communication error for Type H26、 P25、P26 Intelligent controller The screen on the intelligent controller displays “ERR9” ● Extra high temperature around the controller To reduce the ambient temperature 13.0 ACCESSORIES 13.1 NECESSARY ACCESSORIES ○ Shunt Release Rated Control supply voltage Us(V) AC400 AC230 DC220 Operational Voltage(V) (0.7~1.1)Us Instantaneous Current(A) 0.7 1.3 1.3 Breaking Time(ms) No more than 30 ▲ Switch the breaker off by remote control ▲ Features For BT2 with frame current of 2000A and above 12.0 COMMON FAULT AND SOLUTION No. Technical problems Possible reasons Inspection and solution ● Communication cable doesn't connect well with wiring terminals ● Terminals A and B are inversely wired ● Communication distance and wiring ways can't meet the requirements ● Errors for the setting of communication address 1. Check whether the communication cables connect well with wiring terminals or there is wrong connection; 2. Check whether terminals A and B of the communication cable are inversely wired. If so, make the correction; 3. Check whether communication distance and wiring ways can meet the requirements; 4. Check whether the setting of communication address is correct and without conflict For BT2-1600 Circuit Breaker DC110 2.4
  72. 72. Rated Control supply voltage Us(V) Rated Control supply voltage Us(V) AC400 AC230 DC110 (0.85~1.1)Us 0.7 1.3 2.4 Switching-on Time(ms) No more than 70 After the circuit breaker is charged, the closing electromagnet will make the energy-charging spring discharge instantly, and then switch the breaker on quickly. Features ▲ ▲ ○ Closing electromagnet ·66· AC400 AC230 DC220 (0.85~1.1)Us Power Consumption 192VA 192W Charging Time(s) No more than 5 ▲ The circuit breaker has the functions of motor-driven energy-charging and automatic energy- discharging. ▲ Energy charging can also be done manually. ▲ Features ○ Motor-driven Operating Mechanism 13.0 ACCESSORIES For BT2 with frame current of 2000A and above For BT2 with frame current of 2000A and above For BT2-1600 Circuit Breaker For BT2-1600 Circuit Breaker Operational Voltage(V) Operational Voltage(V) Instantaneous Current(A) DC220 1.3 DC110
  73. 73. ○ Auxiliary Switch Rated Current Rated operational Voltage(V) Conventional thermal current Ith(A) Rated capacity AC 230 6 300VA 400 DC 220 60W Note: For the standard type of auxiliary switch, there are four pairs of changeover contacts; for the special type, there are four pieces of normally-opened contacts (NO) and four pieces of normally-closed contacts (NC), or 6 pieces of NO and 2 pieces of NC, or 2 pieces of NO and 6 pieces of NC. ·67· ○ Safety padlock mechanism at the position of “separated” 13.0 ACCESSORIES For BT2 with frame current of 2000A and above For BT2-1600 Circuit Breaker ▲ When the draw-out circuit breaker is at the position of “separated”, the locking stick can be locked with padlock after being pulled out so that the rocker of the circuit breaker can not be turned to the position of “test” or “connected”. ▲ Padlock should be provided by users themselves. Safety padlock mechanism at the position of “separated”
  74. 74. 13.2 OPTIONAL ACCESSORIES ○ DC Power Module ·68· ○ ▲ Power Module When the power voltage of the intelligent controller is DC24V, AC230V or AC400V, it can be transformed into DC24V by the power module to provide power supply for the intelligent controller. Caution: Voltage input to secondary terminals 1 and 2 of BT2-1600 must be DC24V. ▲ The module can be mounted to 35mm DIN rail inside the switchgear cabinet. 13.0 ACCESSORIES When power supply of the secondary circuit is DC220V, it should be transformed into DC24V by this module to provide power supply for the intelligent controller.
  75. 75. ○ Under-voltage release ▲ The under-voltage release consists of release coil and control unit; ▲ The under-voltage release operates in two ways: operate instantaneously and operate in time delay; ▲ There are four specifications of time delay for the under-voltage time delay release: 0.5s, 1s, 2s and 3s. Users should consult with the manufacturer in the light of their order about special time- delay specifications as from 3s and above up to 9s. The time delay accurary is ±10%; ▲ The delay module should be additionally equipped for the under-voltage delay release. The module input connects with the main circuit, and the output connects with the wiring terminals of 31 and 32 in the secondary circuit; ▲ If the voltage of power supply returns to 85% Us and above in half of the delay time, the circuit breakers will not break. The module is stuck into the standard slideway of 35mm in width. ▲ Features (0.35~0.7)Us (0.85~1.1)Us ≤0.35Us 12VA AC400Rated control supply voltage Us(V) AC230 Operational Voltage(V) Reliable Switching-on Voltage(V) Reliable Switching-on Resistant Voltage(V) Power Consumption ·69· Delay Module of Under-voltage delay release for BT2-1600 In connection with the main circuit In connection with the terminals of 31 and 32 in the secondary circuit Under-voltageTime-delayModule AC230V INPUT For BT2-1600 Circuit Breaker 13.0 ACCESSORIES BT2 with frame current of 2000A and above Fuju Electric FA 0.5s 1s 2s 3 s OUTPUT input output
  76. 76. ·70· ○Components of draw-out socket communication module ▲ The components of draw-out socket communication .module consists of the external communication module and the internal communication parts of the circuit breaker. The draw-out socket communication parts are installed inside of the draw-out socket to provide the status signals of such three positions as “separated”, “test” and “connected” of the main body of the draw-out circuit breaker and the draw-out socket.The draw- out socket communication module, which can provide the function of reading the address of the circuit breaker and display the status indication of the main body and three positions of the draw-out socket etc, mounted onto 35mm DIN rall inside the switchgear cabinet. The two parts of the draw-out socket communication module are connected with flexible wires. ○Electrical mechanism for the indication of draw-out socket's position ▲When the main body of the draw-out circuit breaker and the draw-out socket are at the position of “separated”, “test” and “connected” respectively, three electrical mechanisms for the indication of draw-out socket’ s location can output the electrical signals corresponding with three positions above respectively. These mechanisms are installed inside the draw-out socket. ▲ Features Rated operational Voltage Ue(V) 230 Conventional Thermal Current Ith(A) 10 Rated Operational current Ie(A) 1.5 13.0 ACCESSORIES ▲ ’ ’ ’ Communication module is optional accessories of draw-out breaker. Connect: A to RS485 A; B to RS485 B; S to RS485 SH; - to cathode of DC24V; + to anode of DC24V; A to 8, B to 10, S to 12; for BT2-1600, T1 to 61, T2 to 62, T3 to 63, T4 to 64; for BT2-2000 or above, T1 to Y5, T2 to Y6, T3 to Y7, T4 to Y8. By pressing “Read Address” button after address setting, the communication module will save the communication address and the address will be changed accordingly. If users want to keep the former address after changing breakers, press “write Address” button. The power lamp will light on when DC24V power supply is given to the module. The communication lamp will light on
  77. 77. ○ Electrical module for indication of ready-for-switching-on 230 10 1.5 ▲This electrical module indicates that the circuit breaker is ready for switching-on. ▲ Features ·71· 13.0 ACCESSORIES Rated operational Voltage Ue(V) Conventional Thermal Current Ith(A) Rated Operational current Ie(A) when there's data transmission. Fault lamp will light on when the detected address is not complied with the module address or no breaker is connected with the module. After powering up for the module or modification of communication address, check mode or baud rate by upper devices, the module will scan the addresses for several minutes during which the communication between the module & upper device and between breaker & upper devices will be interrupted. ○ Ready-for-switching-on signal: Ready-for-switching-on information could be got by upper devices. ○Under-voltage signal: Informations of trip caused by under-voltage could be got by upper devices. ○Fault-trip signal:Informations of trip caused by overload, short-circuit or ground, etc. could be got by upper devices. ○Current mutual inductor with neutral line N connected externally ▲This current mutual inductor, which is used together with circuit breakers with three poles in the power distribution system of TN-S, installed in the neutral line N with 2m at maximum far from the installation point. ○Steel cable interlock between two pieces of flush circuit breakers or linking rod interlock between two pieces of stacked circuit breakers
  78. 78. ·72· 13.0 ACCESSORIES ○ ( )Linking rod interlock between three pieces of stacked circuit breakers without BT2-1600 0 1QF 2QF 3QF 1QF 3QF 0 0 0 0 1 1 1 0 2QF 0 0 0 0 1QF 2QF 3QF 1QF 3QF 0 0 0 0 1 11 1 0 2QF 0 0 1QF 2QF 3QF 0 10 00 1QF 3QF 0 0 0 0 1 1 1 0 2QF 0 0 01 1 0 11 110 Pattern three: two sets of power supply plus one piece of coupling busbar Pattern two: two sets of common power supply plus one set of standby power supply Pattern one: three sets of power supply can only switch off one piece of circuit breaker. 180 180 Wiring Diagram Possible operation patterns Circuit Breaker 1 Circuit Breaker 2 Circuit Breaker 3 Breaker base Base point 2m Max. Wiring Diagram Possible operation patterns 1QF 2QF 1QF 2QF 0 1 0 0 1 0 Circuit Breaker 1 Circuit Breaker 2 600~700 600~700
  79. 79. ○ “opened” lock mechanism opened“ ” lock mechanism ▲“opened” lock mechanism can lock the “OFF” button of the circuit breaker on the pressed position. As a result, the circuit breaker can not be switched on. ▲After this lock mechanism was chosen by users, the manufacturer would provide lock and key. △One set of circuit breaker is outfitted with one lock and one key. △ Two sets of circuit breakers are outfitted with two same locks and one key. △ Three sets of circuit breakers are outfitted with three same locks and two keys. 13.0 ACCESSORIES Steel cable interlock Refer to the interlock mode of 2 breakers for steel cable interlock of 3 breakers max. Space 2m. 1QF 2QF 3QF 00 1QF 3QF 0 0 0 0 1 1 1 0 2QF 0 0 01 1 0 11 110 2 supply and 1 segmentation Circuit diagram Possible operation mode ·73·
  80. 80. 13.0 ACCESSORIES ○ Button locking device Preventing from operating switching-on/off button by mistake. Pad lock should be provided by user. ○ Counter Counting mechanical operation times accumulatively, clear at a glance. ○ Separator plate between phases Strengthening insulation between bus-bars; optional according to users' demand. ○ Voltage conversion module If voltage display function is selected, voltage conversion module will be provided as a standard configuration. Input terminal is connected be the main circuit while output to the secondary input Terminal 17, 18, 19, 20 of breakers. ·74·
  81. 81. 14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS ● BT2-1600 Intelligent Air Circuit Breaker with three poles (Draw-out type) 70 70 25 50 38 150 60 Outside of the cabinet door “ ” positionSeparated Horizontal (rear connected) A 51 D 72.5 102.5 297 77.5 46 L mm( ) 200A,400A, 630A 10 800A,1000A, 1250A,1600A Current specifications 15 2-Φ6.5 2-6.5×8.5 51 72.5 102.5 297 77.5 46 15 12-Φ11 70 70 L 12-Φ11 C ·75· 86 “ ” positionSeparated Outside of the cabinet door Direction A Base point Direction D Base point Direction C Vertical ( )rear connected
  82. 82. ·76· ● BT2-1600 Intelligent Air Circuit Breaker with four poles (Draw-out type) 57 60201 A 51 D 72.5 102.5 297 77.5 46 2-Φ6.5 2-6.5×8.5 51 72.5 102.5 297 77.5 46 15 16-Φ11 70 70 L 70 70 70 25 50 70 16-Φ11 C 102 14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS L mm( ) 200A,400A, 630A 10 800A,1000A, 1200A,1600A Current specifications 15 Direction A N pole Outside of the cabinet door “ ” positionSeparated Horizontal ( )rear connected Base point “ ” positionSeparated Vertical ( )rear connected Outside of the cabinet door Direction D Base point Direction C N pole
  83. 83. 14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS ● BT2-1600 Intelligent Air Circuit Breaker with three poles (fixed type) L mm( ) 200A,400A, 630A 10 800A,1000A, 1200A,1600A Current specifications 15 70 12-Φ11 70 50 25 32 4-Φ6.5 100 192 197 38.5 50.6 A 10 234 10 32 4-Φ6.5 100 192 197 38.5 50.6 C 4-Φ6.5 214 234 244 4-Φ6.5 15 Direction A Outside of the cabinet door Horizontal ( )rear connected Outside of the cabinet door 70 70 L Direction C Base point Breaker base Vertical ( )rear connected Base point Aperture dimensions of the back plate at the time of hanging type installation ·77·
  84. 84. 14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS ● BT2-1600 Intelligent Air Circuit Breaker with four poles (fixed type) 70 70 70 25 50 16-Φ11 10 10304 4-Φ6.5 32 4-Φ6.5 100 192 197 38.5 50.6 A 284 304 314 Aperture dimensions of the back plate at the time of hanging type installation 4-Φ6.5 32 4-Φ6.5 100 192 197 38.5 50.6 C 70 70 L 15 70 Direction A Outside of the cabinet door Horizontal ( )rear connected Base point Outside of the cabinet door Direction C Breaker base Vertical ( )rear connected N pole N pole Base point L mm( ) 200A,400A, 630A 10 800A,1000A, 1200A,1600A Current specifications 15 ·78·
  85. 85. ·79· 95 24-Φ11 95 30 70 41 265 41 A 61 D 10 97 175 390 102 47 24-Φ11 C 97 175 102 390 66 30 15 60 60 30 10 95 95 10 47 ● BT2-2000 Intelligent Air Circuit Breaker with three poles (Draw-out type) L mm( ) H mm( ) 2000A 20 20 630A 800A 1000A,1250A 1600A , 15 15 A mm( ) 30 25 2-Φ14 11×17 Φ11 14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS Current specifications Direction A Outside of the cabinet door Base point “ ” positionSeparated Horizontal ( )rear connected “ ” positionSeparated Vertical ( )rear connected Outside of the cabinet doorDirection D Base point Direction C
  86. 86. L mm( ) H mm( ) A mm( ) Current specifications ·80· 95 30 70 32-Φ1195 95 41 360 41 10 97 175 102 39047 D A 61 32-Φ11 C 97 175 102 390 66 30 15 60 10 47 60 30 10 95 9595 N极 2-Φ14 11×17 Φ11 ● BT2-2000 Intelligent Air Circuit Breaker with four poles (Draw-out type) 2000A 20 630A 800A 1000A,1250A 1600A , 15 30 25 20 15 14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS Direction A N pole Outside of the cabinet door Base point “ ” positionSeparated Horizontal ( )rear connected Outside of the cabinet door Base point “ ” positionSeparated Vertical ( )rear connected Direction D Direction C
  87. 87. ·81· 1111 340 A 150 69.5 285 290 61 95 24-Φ11 95 30 60 150 69.5 285 94 3015 24-Φ11 60 60 30 10 95 95 BT2-2000 Intelligent Air Circuit Breaker with three poles (Fixed type)● L mm( ) W mm( ) B mm( ) 2000A 20 20 13 630A 800A 1000A,1250A 1600A , 15 15 3 A mm( ) 269 264 C 14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS Current specifications Direction A Outside of the cabinet door Base point Horizontal ( )rear connected Base point Outside of the cabinet door Base point Vertical ( )rear connected Direction C
  88. 88. ·82· 95 95 95 32-Φ11 30 60 435 1111 61 A 150 69.5 285 290 150 69.5 285 94 3015 32-Φ11 60 60 30 10 95 9595 C ● BT2-2000 Intelligent Air Circuit Breaker with four poles (Fixed type) L mm( ) W mm( ) B mm( ) 2000A 20 20 13 630A 800A 1000A,1250A 1600A , 15 15 3 A mm( ) 269 264 14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS Current specifications Direction A Outside of the cabinet door Base point Horizontal ( )rear connected Base point N pole Outside of the cabinet door Direction C Base point N pole Vertical ( )rear connected
  89. 89. ·83· 41 265 41 A 62 D 10 97 175 390 102 47 97 175 102 390 10 47 ● BT2-2500 Intelligent Air Circuit Breaker with three poles (Draw-out type) L mm( ) 2000A 2500A, 20 1250A 1600A, 15 2-Φ14 11×17 Φ11 95 30 70 24-Φ11 95 62 24-Φ11 C 95 95 L 14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS Current specifications Direction A Outside of the cabinet door Base point “ ” positionSeparated Horizontal ( )rear connected Outside of the cabinet door Base point “ ” positionSeparated Vertical ( )rear connected Direction D Direction C
  90. 90. ·84· 41 360 41 10 97 175 102 39047 D A 62 2-Φ14 11×17 Φ11 ● BT2-2500 Intelligent Air Circuit Breaker with four poles (Draw-out type) L mm( ) 20 15 2000A 2500A, 1250A 1600A, 97 175 102 390 10 47 62 32-Φ11 C 95 95 L 95 N极 14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS Current specifications Outside of the cabinet door “ ” positionSeparated Horizontal ( )rear connected 95 30 70 32-Φ11 95 95 Direction A N pole Outside of the cabinet door Base point “ ” positionSeparated Vertical ( )rear connected Direction D Direction C Base point
  91. 91. 1111 340 A 150 69.5 285 290 61 95 24-Φ11 95 30 60 ● BT2-2500 Intelligent Air Circuit Breaker with three poles (Fixed type) ·85· 14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS L mm( ) 20 15 2000A 2500A, 1250A 1600A, C mm( ) 132 134.5 Current specifications Direction A Outside of the cabinet door Horizontal ( )rear connected Base point Base point 95 95 95 32-Φ11 30 60 435 1111 61 A 150 69.5 285 290 ● BT2-2500 Intelligent Air Circuit Breaker with four poles (Fixed type) Direction A N pole Outside of the cabinet door Horizontal ( )rear connected Base point Base point L mm( ) 20 15 2000A 2500A, 1250A 1600A, C mm( ) 132 134.5 Current specifications

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