We all are aware that we are applying lots of Artficial Sources to make our Life Comforts . For This we are installing Many Electrical Equipments Power AC & DC and Electric Vehicles Inside our Building and out Side and in this process many of metal Part is entering into our Building. To ensure better perform and Human Safety Earthing of Equipment and Conductive stucture is very important Value from 1 Ohms up to 0.25 Ohms. Our National Building Code 2016 is alreday given Guide Line and Supporting by MBBL2019 (Manual Building By LAW). Internal Switch and External Lightning will very Danger for our Equipments and Human Lives May Cause Assest Damage up to Sacrifice Human Live due to Fire and Electric Change. We have to Design and protect our Building or Permises form External Lightning by Nature use NBC IS/IEC 62305. When Lightning Fall any Condutive Like Pole ,Transmission Line and React with Ground may be Shift 100kA Fault Current into our Building use Surge Protection Device to product from any ind of Direct and Indirect Threat. JMV LPS Ltd belive Make in India Noida Base Company Manufacturer Design ,Engineering ,Supply and Installation. Maintenance Free Earthing ,Copper Clad Steet Sof Conductore, Exothermic Weld, External Lightning Protection and per IS/IEC62305, Surge Protection Devive as per IS/IEC 62035.

1. Be-Ware I am Electricity Not a Toy
Follow Electrical Safety

2. Build Your Construction Apply National Electrical Safety
Code NBC2016

3. WE should must Understand Differnce Earthing
Between DC & AC Circuit

4. Let’s do some Explanation -1
In Solar PV power plants, common question alwaysrising in our mind that, "Whether is it
advisableto combine DC & AC Earthing ?
Some of expertise people in the industry go ahead,to preferring to do combining of both the
systems earthing, to arrive overallearthing grid resistance < = 5 Ohms / < = 1 Ohms. But
technicallyspeaking, this combining effect is not technicallyadvisable.Why ? and How ?
Let's move on detailing.As we well aware, In DC systems, the flow of current in the circuit is
based on the resistance ( R ) associated with that. Where as in AC systems, the flow of current in
the circuit is based on the Impedance ( Z ) associated with that. From this preliminaryconcept,
We understoodclearly that, One Ampere of DC system current is not Equalto the One Ampere
of AC system current

5. • Fromthe above concept, we understood wellthat, Combining DC & AC earthing is not technically advisable. DC system
working based on the Resistance(R) associated within, Whereas AC systemworking based on Impedance(Z) associated
within. Normally in AC systems,theShortcircuit level based on the Impedance. Presenceof higher Impedancewill
resulted in higher Shortcircuit in the system.
• The shortcircuit currentof DC systems of PV plantbased on the Pnom Ratio figure, which is detailed below :
• Fromthe above figure, it is clearly understood that,If DC loading increasing, thenshort circuitcurrentlevel of the
systemwill increase. Now a days, witnessing elevated technology on the inverter section, we havebeen getting single
inverter unit rating like 2MW, 3.125MW, 3.75MW, 4MW & 5MW, in currentPV market. By the way of adopting higher
rating inverter & carrying with 60% DC loading, DC shortcircuit level maximum it can go nearing to 5 KA ( 5000A, rarely
) not morethan that.
• Sizing the earth conductor ( MMS Body earthing to earth pit ) is based on the maximum shortcircuit currentcarrying
by the system+time to withstand the fault current. - This procedurenot only for DCearthing, this is common
procedureeven for AC earthing too.
• If designer carrying over generalprocedures to calculate proper sizing ofearthing conductor for DC system, then he
should have to check the Pnomratio of plant along with Isc of each module & number of SCB's / SMB's connected to
the each inverter.
• Where as for the AC systems, theshortcircuit level derived based on two options widely by the industry experts.
• Option- I : Shortcircuit apparent power based on IEC 60076 - PART- V.

6. Let’s do Explanation -2
• Option - II : Plant connectingpoolingsubstationshort circuit level.( The designer has to consider pooling
substationshort circuit level as the main data / figure, for his designingplant )
• By the way of usingthe above available options, we can calculate easilyrequired earth flat size connectingto
the AC equipment's (Transformer,LT / HT breaker, Isolator,CT, PT, Surge arrestor ) to theearthpits.
• Example, The Short circuit current level is 25KA / 1 sec ( System has to withstandoverall ),then required GI(
GalvanizedIron )earth flat size as per IS 3043 - 1987 & International standardsforearthing,is : 312.5 Sq.mm,
so 50 x 8 mm is enough to carry the 25kA / 1 sec. For DC System 5KA short circuit current, required earth flat
size is : 62.5 Sq.mm, So designer can proceed with detailingof25 x 6 mm as the earthingflat between MMS to
earth pits / SCB's to earthpit.
• Conductor means it conducts / carry the current from one source to other source.It will allowto pass the
current it's carrying. Peoplegenerally prefer to combining bothearthing systems, to arrive overall grid earth
resistance is less than and equal to One ohms. Carryingover this concept stronglywill not lead to failure free
operationas overall.Ifwe are willingto combiningofDC & AC earthingthrough earthingconductors,then the
chances for failure ofwhole system will be very high.The main reason behind is,AC systems have been carrying
higher impedance and higher short circuit current compare than DC systems,specificallyon Solar PV plants.In
the combined earthingphilosophy,AC system fault current maytravel to reach even in DC systems ( MMS,
SCB's ) and it will affect their operation life instantly.Sometime due to the combined effect, the higher fault
current at HV level ( 11KV / 22KV / 33KV ) will take path through lowresistance path /conductor and it will
reach to Inverter DC portion and affect the whole inverter with severe damage. So combiningbothearthing
system technicallyis not at all advisable one.

7. JMV LPS
LIMITED

10. Utilize your Power Precisely

11. Ensure Protection of Your Equipment from Lightning
Transient Overvoltage
Definition:Very short voltage increases between two conductors or between one
conductor and the ground.
LIGHTNING OVERVOLTAGE
Transientovervoltagemay enter an electrical installationvia the electrical power
supply, telephone, TV or data lines, or even through the earthing which then
transmits it to the connected equipment.
Most typical causes of transient overvoltageare:
Switching operationsof machinery
Grid failure event
Indirect lightningstrikes
Consequencesrange from simple disruptions (interruptionof operations or
computer failures) to the total heavy damage to main components of an
installation.
Transient overvoltage represents a higher risk for more advanced technology. This
is due to the fact that components tend to be smaller and more sensible to
overvoltage.

13. OUR PRODUCT RANGE
Maintenance
Free Earthing
System
- As per IS 3043,
IEEE 80, BS 7430,
NBC 2016
Exothermic
Weld Jointing
System
- As per IEEE 837,
IEEE 80, NBC 2016
External
Lightning
Protection
System
-As per IS/IEC
62305, NBC 2016,
NF C 17-102
Surge
Protection
Devices
- As per IS/ IEC
62305, IEC 61643

18. An earthing system with an earth mat of inclusive of
an earthing conductor of made up of low carbon
high steel molecularly bonded with copper coating
of 250 microns.
An earth pits will consist of Solid Copper bonded rods
complying IEC 62561-2and tested by CPRI at 25
KA/50KA/65KA of fault withstand capacity. A UL
listed copper bonded rod shall be made up of low
carbon high tensile strength steel with 99.99 %
pure electrolytic copper coating of min. 250
microns as per UL 467.
An earthing conductor & earthing pits shall be
surrounded by an Earth enhancement material
having a resistivity less than 0.12 ohm-m. A carbon
based earth enhancement material shall be tested
by NABL accredited lab for RoHS. A earth
enhancement material shall be tested as per IEC
62561-7.
Maintenance Free Earthing System
Components
As Per IS 3043, IEEE 80, NBC 2016

19. Maintenance Free Earthing as Per MBC2016,IS3042(2018),IEEE80,IEC62305

20. Earth pit covers are provided for checking and recording earth resistance
value after a definite and indefinite amount of time.
Earthing pit covers available in
DMC & PVC.
-High mechanical as well as
compressive strength
- Easyfabrication and handling.
- Environment Friendly rust-
proof.
- Removable top for Pit
inspection.
Earth Pit Covers- Paramount to Human
Safety
Differ
ent
Varian
ts

21. © 2013DEHN + SÖHNE/ protected
Damag
es
Injury to
living
being by
Electric
shock
Physic
al
dama
ge
Failure of
Electrical
and
Electronic
s
equipmen
t.
Lightning Can Cause

22. TRANSIENT/SURGE
Protection
An over-voltage is enough to hinder the performance of any
equipment.
10/350
microseco
nds
8/20
microseco
nds
1.2/50
microseco
nds

23. AC Power Surge Protection DevicesClass
B
Class
C
Class
B+C
Telecom Surge Protection Devices MDFRJ 45RJ 11
Railways Surge Protection Devices
Photovoltaic Surge Protection Devices
DataLine Surge Protection Devices POERJ 45
PV
Class
B&C
Class
C/40
AC/D
C
Classification of Surge Protection Devices

24. Wind Turbine Surge Protection Devices
LSA+ Surge Protection Devices
Security &Surveillance Surge
Protection Devices
Signal Surge Protection Devices
LED Surge Protection Devices
CCTV
+ P.P.
RJ45
+ P.P.
BNC-
CCTV
Serial Port Surge Protection Devices
Isolation Spark Gap
Pipeline Cathodic
Surge Protection
WT
LSA+
LED
5kV
BNC&N
Adapto
r
F-
Type
LED
10kV
DB
9,
15,
25
AC/
DC

25. 1. Upgradation towards LED
indication – Easing the
identification of SPD failure so
as to ensure that the system
associated always works on
protection. Embedding a red
light on it to indicate
replacement/ end of its service
life.
2. SPD with Progressive/
12
SPD will either function for a very long time or would fail instantly -
Depending on the magnitude and frequency of appearance of surges/ spikes.
Hence, JMV is up with intelligent and graded indication
Some of our Case Studies

32. Mahesh Chandra Manav V.P. MKT M-9910398999
JMV LPS LIMITED
Head Office: W-50, Sector 11, NOIDA, UP
www.jmv.co.in;T-0120-4590000 manav@jmv.co.in

33. JMV LPS LIMITEDwww.jmv.co.in

34. Make in India Organization
Foundation laid in 2003, JMV LPS Limited set itself as the pioneer technology leader & service provider that
offers reliable protection of people, buildings, electrical and electronic devices and systems against the
effects of lightning, surges and fault current.Thanks to our expertise dedication and pioneering spirit we
have been pushing developments in each and every industry segment since more than a decade.
JMV is equipped with great technology advancement with state-of-the-art facilities, customer centric
approach and continuous process optimization.These facilities inspiring us to produce world class products
and making us the leading manufacturers in the country. The hunger of continuous development and
technology upgradation is a key behind our growth & development.We have a great strength of dedicated
engineers contributing in research, development, innovation & creation.
SMART
CITIES
AIR
NAVAL
&
ARMY
BUILDING
&
INFRA
POWER
TRANSMISSION
&
DISTRIBUTION
SIGNALLING
&
TELECOM
OIL
&
GAS
SOLAR
&
HESBS
TUNNEL
EV
INTEGRATED
ROAD
TRANSPORT
SYSTEM
RAILWAYS
&
METRO
RAIL

36. Maintenance Free Earthing System
As Per IS 3043:2018, NBC:2016,
IEEE 80:2013, IEC 62561 Series
External Lightning Protection System
As Per NBC:2016, IS/IEC 62305:2010,
IEC 62561 Series, NF C 17-102:2011
Solar Protection
As Per IEC 61439-1,2,3,4,5,6,
IEC 62852, IEC 60296
Exothermic Welding System
As Per NBC:2016, IEEE 80:2013,
IEEE 837:2014
Surge Protection Devices
( Internal Lightning Protection System )
As Per NBC:2016, IS/IEC 62305:2010,
IEC 61643:2011

37. Maintenance Free Earthing System
A well-designed earthing system is the primary line of protection for any electrical/electronic installation from
destructive fault current.The grounding/earthing system offers a low impedance path to the fault current resulting
into the safety of personnel and equipment.
As per IEEE 80:2013,
“A safe grounding design has the following two objectives:
- To provide means to carry electric currents into the earth under normal and fault conditions
without exceeding any operating and equipment limits or adversely affecting continuity of service.
- To reduce the risk of a person in the vicinity of grounded facilities being exposed to the danger of
critical electric shock.”
Maintenance Free Earthing System with
Exothermically Welded Bus Bar
Maintenance Free Earthing System with
Clamp Connection
EARTH MAT DESIGN
05

38. TECHNICAL FEATURES
This solid rod technology offers excellent product life of +40 years.
Solution offers remarkable electrical conductivity & high tensile strength.
Excellent fault current carrying capacity contrasted with most metals.
Exhibits corrosion resistant properties as copper.
The technology can withstand more mechanical abuses comparatively.
The standard dimensions – 14.2mm dia,17.2mm dia,19mm dia,23.2mm dia,25mm dia & 38mm dia with
standard length of 3 to 9 meters.
*The dimension of the rod can be customised as per the fault current requirement.
* Higher sizes are available on request.
Copper Bonded Steel Rods:
Complying IS 3043, NBC 2016, IEC 62561-2, IEEE 80, UL 467, BS 7430
Copper Bonded Steel Rods are most appreciable and highly preferrable
product known for its ultimate performance with significance of no
hidden factor.These low carbon,molecularly bonded mild steel rods are
manufactured, inheriting 99.99% pure electrolytic copper coating of
minimum 250 microns.This combination contribute to the high tensile
strength and remarkable conductivity of the whole system.
Based on solid rod technology, copper bonded rods are electrically and
mechanically robust solution complying national & international
standards. Each rod can be visually inspected to meet the requirements
of IEC 62561-2.This solution is recommended in almost every soil
condition because copper on outer surface of the rod will not slip or
tear, when driven inside the earth nor the rod will suffer peeling or any
kind of crack when it gets bent.
CBR 1412
MODELS FAULT CARRYING CAPACITY
15kA
CBR 1730 25kA
CBR 1430 19kA
CBR 2330 50kA
CBR 3830 50kA
06

39. The National Electrical Grounding Research Project (NEGRP) was a project conducted by the National Fire Protection
Association (NFPA) Research Foundation.The objective of the project was to compare the long-term performance of
different types of earthing rods. According to the project, several different types of earthing rods were buried in
different types of soils.After 10 years in the year 2003, one of the original sites (Pawnee) was excavated and the rods
were removed.It was found that the copper bonded rod was virtually free of corrosion while the galvanised rod showed
significant deterioration.The UL listed copper bonded ground rods have served the industry exceptionally well,
providing a 40+ year life, typically 4 times that of galvanised ground rods.
NEGRP- REAL TIME RESEARCH ON GI ROD AND COPPER BONDED ROD
LATEST CODES REFERENCES
NBC : 2016
Clause no. 83, Page 63:
It is recommended to
use either copper
/stainless steel or
copper coated steel
electrode.
IEEE 80 : 2013
Clause no 11.2.2, Page
40: Copper Clad Steel is
usually used for
underground rods and
occassionallyforgrounding
grids, especially where
theft is a problem.
IS 3043 : 2018
Clause no. 14.2.2, Page
25: Copper clad mild
steel rods can be used in
place of normal mild
steel rod where the soil
is corrosive.
07

40. As per IS 3043:2018 & IEEE 80:2013, “It is often impossible to achieve the desired reduction in ground
resistance by adding more grid conductors or ground rods. An alternate solution is to effectively
increase the diameter of the electrode by modifying the soil surrounding the electrode.The inner shell of
soil closest to the electrode normally comprises the bulk of the electrode ground resistance to remote earth.”
Premium-Quality, Carbon based high-grade Ground Enhancing
Material with a resistivity of less than 0.12 Ω-m to be used with
Maintenance Free Earthing System so as to achieve lower ohmic value in
soil of high resistivity. JAM LITE is a fine blend of corrosion free and
highly conductive minerals that absorbs quite much huge amount of
water. It is a permanent enhancement material and will not leach any
chemicals into the ground.
RoHS compliant ground enhancement material is a first-rate conductive material,made recognition for its
effectiveness, durability and non-hazardous characteristics. Earth Enhancement Compound is intended to use with
earthing system in order to lower down ground resistance value in order to improve the conductivity of soil.The
product is NABL accredited and precisely developed as per IEC 62561-7.This maintenance-free compact solution can
be easily settled in areas with poor soil conditions (say rocky, sandy or desert soil) without violating any environmental
regulations. It is available in bags of Kilograms.
Earth Enhancement Compound:
Complying IS 3043, NBC 2016, IEEE 80, IEC 62561-7
JAM LITE
It is an innovative,eco-friendly and precisely developed backfill earthing
compound that eliminates the need of salt & charcoal to improve
earthing system’s conductivity. This specially designed moisture
boosting earthing compound is reckoned for high end qualities like non
corrosive, highly conductive, moisture absorbing and retaining feature
for a long period of time. It is readily available in packing of 25 kg Bag.
JAM FILL
08

41. Conductivity Testing of Compound
Using Continuity Tester
TECHNICAL FEATURES
No regular maintenance is required.
The material is eco-friendly and chemically inert to subsoil.
Low resistive compound with resistivity of less than 0.12 ohm-mtr.
ROHS tested compound tested by NABL accredited lab in
compliance to IEC 62561-7.
The material shall be tested for leaching test, corrosion test, sulfur
test and resistivity test as per IEC62561-7.
It shall be carbon based material and shall be free from bentonite
and other hazardous substances.
Stabilized in terms of physical and chemical property.
It shall be free from corrosion.
The product does not dissolve, deteriorate or leach out with time.
It shall have high conductivity, improves earth’s absorbing power
and humidity retention capability.
LATEST CODES REFERENCES
NBC : 2016
Clause no. 8.4.2, Page
63 & 67:To reduce the
soil resistivity, artificial
soil treatment shall be
adopted.The material of
the earthing enhancing
compound shall be
chemically inert to
subsoil. It shall not
pollute the environment.
It shall provide a stable
environment in terms of
physical and chemical
properties and exhibit
low resistivity. The
compound shall not be
corrosive to the earth
electrodes.
IEEE 80 : 2013
Clause no 14.5, Page 68:
Ground enhancement
materials, some with a
resistivity of less than
0.12 ohm-mtr (about
5% of the resistivity of
bentonite), are typically
placed around the rod in
an augured hole or
around grounding
conductors in a trench,
in either a dry form or
premixed in a slurry.
IS 3043 : 2018
Clause no 13.8, Page 23:
Ground enhancement
materials, some with a
resistivity of less than
0.12 ohm-mtr (about
5% of the resistivity of
bentonite), are typically
placed around the rod in
an augured hole or
around grounding
conductors in a trench,
in either a dry form or
premixed in a slurry.
09

42. It is generally said to specify entire system as trouble-free each element
stick to it should exceed the dilemma of unforeseen risks.To achieve
complete, economical and compact earthing solution right from copper
bonded rods, earth enhancement compound and other fundamental
accessories, we have copper clad steel conductor to adjoin the system.
Molecularly bonded copper clad steel conductor employ 99.99% steel
core with pure copper coating so as to acquire spectacular flexibility
with high strength. This dead soft annealed solid conductor can be
available as a single strand or even in multiple stranded configurations,
simply the point of fault current bearing capacity. Here, cladding is
accessed metallurgically over the steel core such that copper
coating & conductivity is in relative proportion.The conductor yields
21%, 30% and 40% IACS of electrical conductivity that dictate easy
formation, malleability and durability.
Copper Clad Steel Conductor:
Complying IS 3043, IEEE 80, IEC 62561-2, NBC 2016
TECHNICAL FEATURES
Excellent fault current carrying capacity
Best alternative of solid copper
Reduces the number of joints
Less scrap value
Easy to install, hard to damage
Theft proof and cost effective
Parameter GI Strip
Quantity 10% extra of the actual requirement as it doesn’t get straighten
manually and require extra length for overlapping joints.
Conductor Length
Quality of
Conductor
Installation Time
Life of Conductor
Life of Joints
Transportation &
Storage
Copper Clad Steel Conductor
Max. available length of GI flat is 6m and to attain the required
length, a jointing should be done at every 6m to maintain the length.
Maximum Length 6 meter
GI products are made up of low grade or scrap steel and doesn’t
have any brand value. Moreover, no alignment/uniformity.
Made up of re-cycled steel
Corrosion receptive. Hence, results in system failure and in
contrary, high maintenance.
<8 years
As max. length= 6m, generally crucial in transportation.
Costlier
Nut bolt joints-only 10-15% contact surface area; cannot withstand high
current. Plus 3mm thickness joint cannot serve <2 years below ground.
Not-so-reliable
It takes both effort & time, to bring GI strips in usable form.
Installation is difficult & time-laborious
Doesn’t need any sort of additional length as it is soft-annealed
conductor and can easily get straighten at the site.
Product gives flexibility in length selection. It is available in min.
single length of 500m and max. as per site requirement.
Minimum Length 500 meter
Saves installation time as well as wastage as provided in
drum rolls.
Save up to 60% of installation time
High grade steel encompassing unique properties.
Made up of high grade steel
Higher life span of conductor results in higher life span of overall
infrastructure.
40+ years
Easy transportation and storage of drum rolls.
Cost-effective solution
Hassle-free exothermic jointing system gives 100% contact
surface are and more life to conductor.
Fail-proof
10

43. Connecting Accessories
To maintain/repair connections in the system without any kind of disconnection, we can use clamps and couplings of
different shape and sizes; getting specific to the product requirement. Several numbers and types of clamps & couplings
are engineered for an optimal fit to the installations to acquire safe, sound and efficient performance.
Earth Pit covers are manufactured using supreme quality raw materials
under the administration of modern techniques. The idea behind
manufacturing of pit covers is routine testing of the earthing installation
and obviously human safety.The availability of pit covers is made in
PVC to carry out easy fabrication and to attain high mechanical
strength. Being good supplier of pit cover manufacturers, we have been
offering unrivaled solution known for its lightweight, easy handling,
UV-stabilized, safe work load characteristics and undoubtedly high
bearing capacity.
Earth Pit Covers:
IEC 62561-5
11

44. PROCEDURE LISTED:
Exothermic Weld SystemComplying IEEE 837, IEEE 80, NBC 2016
Electrical jointing or connection reliability is critical to the long-term integrity of the electrical system. Over the
period of time, due to ageing, less maintenance and changing weather conditions, the joints are becoming low
performing joints as it gets corroded or loosen due to temporary jointing techniques.
An ExothermicWelding System complying IEEE 837, has come up as a robust solution for these problems.Today,
Exothermic Welding is a globally accepted method to make reliable and safe connections between two or more
conductors.This technology is highly portable and does not require any external source of heat to make a joint
offering in permanent molecular bonding among metallic conductors.
As per NBC:2016, IEEE 80:2013, BS 7430:2011, “An exothermic welding system is used for making electrical
connections of copper to copper, copper to steel or copper to cast iron for grounding and cathodic applications.An
exothermic welded connection shall be suitable for exposure to the elements of direct burial in earth or concrete
without degradation over the lifetime of the grounding system.”
Step 1: Clean the mold using brush and
place the conductor inside the weld cavity
Step 2: Close the mold with the help of
handle clamp.
Step 3: Place the steel disc into the mold.
Step 4: Pour the weld powder into the mold.
Step 5: Close the lid and ignite using flint
ignitor.
* Open the mold after few minutes once the
metal solidifies.
The end joint will be -
12

45. EXOTHERMIC JAMWELD TOOL KIT:
EXOTHERMIC WELD JOINTS V/S MECHANICAL JOINTS
NBC 2016
IEEE 80
IEEE 837
UL 467
BS 7430
13

46. LATEST CODES REFERENCES
NBC : 2016
Clause no. 8.6.2, Page
67: Where an Earth
Electrode consists of
parts that must be
connected together, the
connection shall be by
ExothermicWelding.
IEEE 80 : 2013
Clause no 9.6, Page 35:
Exothermic Weld,
Brazed,or Pressure type
Connector can be used
for underground
connections. Soldered
connections should be
avoided due to the
possibility of failure.
TYPE OF EXOTHERMIC JOINTS:
TECHNICAL FEATURES:
ExothermicWeld connections form a solid bond around the conductors assuring continuity.
Standard exothermic weld has a cross-section greater than that of the conductor to be joined, the weld will
always remain cooler than the conductor under fault conditions.
Superior electrical conductiviy of the conductors themselves.
Does not corrode, oxidize or degrade with time and is resistant to galvanic coupling.
Able to withstand repeated electrical discharges.
No environmental impact.
Compared to other forms of welding, exothermic bonds have a higher mechanical strength.
14

47. JMV’s New Initiative-
JMV LPS LIMITED being a Make in India organization has taken an initiative to upgrade the level of method of Earth-
ing Calculations in INDIA. JMV is now come up with a software known as CDEGS software (Current Distribution,
Electromagnetic Fields, Grounding and Soil StructureAnalysis).
JMV will now provide you with an array of cost-effective solutions for problems ranging from simple grounding grid
designs to the behavior of complex networks of aboveground and buried conductors energized by lightning or other
transients.
BRIEFLY STATED, CDEGS CAPABILITIES ARE:
1. Earthing System designing & calculations using
Integrated Software CDEGS for the study of Power System
Grounding/Earthing, Electromagnetic Fields and
Electromagnetic Interference. Design safe grounding
systems complying with and surpassing the minimal
requirements from IEEE 80, IEC 61936, IEC 62305 and
many other standards. Designing an earthing
grids/mats/meshes using latest technology i.e. Copper
Bonded Steel Rods and an earth enhancement compound
along with exothermic joints.
2. Lightning Protection System: Risk Assessment
Software, Solutions designing & component manufacturing
as per NBC 2016, IS/IEC 62305. Lightning Shielding
Analysis IEEE and IEC standards and included Electro
geometric Model, Eriksson Electro geometric Model,
Protection Angle Method, Mesh Method and Collection
Volume Method. We are having Lightning Protection
components tested at 200KA as per IEC 62561 Standard.
3. Surge protection devices to mitigate lightning and
switching surges against the failure of electrical &
electronics equipment.We are manufacturing wide range
SPD’s suitable for AC & DC Power, Railway Signaling &
Telecom, Dateline, Solar, Security & Surveillance etc.We
are doing the Surge Analysis & designing the same in
compliance with IS/ IEC 62305-4 and IEC 61643 standard.
4. Cathodic protection analysis of complex buried
networks such as in gas and oil pipelines.We are manufacturing isolation spark gap’s used for equipotential bonding
in underground earthing grids and in buried pipelines, manufactured as per IS/IEC 62305 & IEC 62561 standard.
15

48. Lightning Protection System
JMV LIGHTNING RISK ASSESMENT SOFTWARE
REQUIREMENT OF LIGHTNING PROTECTION SYSTEM IN RISK ANALYSIS
Lightning protection systems are methods to divert the effects of lightning discharges away from the buildings, its
occupants and sensitive equipment housed in the building, including from the necessary connections from public
systems to the building. LPS may be installed to avoid accidents, severe injuries and may be even deaths of humans and
animals due to direct and indirect lightning.
NO
a
YES
YES
YES
YES
NO NO
NO
If RA + RB < RT
Identify the structure to be protected
Identify the types of loss relevant to the structure
For each type of loss, Identify and calculate the risk components
RA, RB, RC, RM, RU, RV, RW, RZ
R > RT Structure protected
Protection needed
Is LPS
Installed ?
RA
+ RB
+ RU
+RV
> RT
Are SPM
Installed ?
Install an adequate
type of LPS
Install an adequate
SPM
Install other protection
measures
Calculate new values of
risk components
RT
(y-1
)
L1 10-5
L2 10-3
L3 10-4
L4 10-3
Types of loss
Loss of human life or permanent injuries
Loss of service to the public
Loss of cultural heritage
Economic Loss
NOTE: *Find Lightning
Risk Assessment software
on our webiste / or
download Lightning Risk
Assessment Mobile
Application directly from
Google Playstore.
16

49. As per IS/IEC 62305-3 & NBC 2016, the acceptable methods and strategies to position the air-termination
network system involves:
- Protection Angle Method
(Vertical Rods offering certain angles of protection based on LPL)
- Rolling Sphere Method
(CatenaryWires)
- Mesh Method
(Horizontal Conductor in Meshed or Grid Form)
Designing of Lightning Protection System:
IS/IEC-62305, NBC 2016
as per the graph
i ii iii iv
Class of
LPS
h
80
70
60
50
40
30
20
10
0
0 2 10 20 30 40 50 60
LATEST CODES REFERENCES
NBC : 2016
Clause no. 11.3, Page
85:The need for protec-
tion, the economic
benefits of installing
protection measures
and the selection of
protection measures
should be determined in
terms of risk assessment.
IS/IEC 62305-3:2010
Clause no 5.1.1, Page 7:
The External LPS is
intended to intercept
direct lightning flashes
to the structure,
including flashes to the
side of the structure &
conduct the current to
ground.
17

50. EXTERNAL LIGHTNING PROTECTION COMPONENTS INCLUDES
(AS PER IEC 62561 SERIES):
1. AirTerminal to Intercept a lightning flash to the structure
2. Down Conductor to direct the devastating lightning current safely towards earth
3. EarthTermination System to dissipate that current into the earth
As per IS/IEC 62305:2010,
“Air termination components shall be installed at corners, exposed points and edges in accordance with one or more
of the methods of positioning (Protection angle, Rolling sphere, Mesh).” It is available in Aluminium, Copper, Copper
CladAluminium & Copper Clad Steel as per standard IEC 62561-2:2018 specifications.
As per IS/IEC 62305:2010,
“Down Conductors shall be preferably placed at the external part of the structure. In order to reduce the probability
of damage due to lightning current flowing in the LPS, the down-conductors shall be installed straight and vertical such
that they provide the shortest and most direct path to earth.The formation of loops shall be avoided. It is available in
Aluminium, Copper, Copper CladAluminium & Copper Clad Steel as per standard IEC 62561-2:2018 specifications.
DOWN CONDUCTORS:
AIR TERMINAL:
18

51. CONNECTING ACCESSORIES FOR INSTALLATIONS:
INSTALLATION VIEW AS PER NBC 2016:
1
2
34
5
6
10
8
9
7
01 - Lightning Rod 02 - Roof Cable Holder 03 - Expansion Piece
04 - Round Down Conductor 05 - Connector 06 - Wall Conductor Holder
07 - Testlink 08 - Pit Cover 09 - Ground Enhancing Compound
10 - Earth Rod 11 - Lightning Strike Counter
11
19

52. TECHNICAL FEATURES
Product is in acquiescence to corona discharge effect.
The technology comply NF C17-102:2011.
As per NF C17-102:2011, the product shows significant discharge
triggering time saving feature under ∆T= 88µs (approx.) and is
duly tested at 200kA.
Its stainless steel body is suitable to every weather condition.
Corrosion repellent product.
The down conductor used should be 50sq mm, HVLC cable tested
at 200kA.
The lightning systems shall be installed complete with the lightning
strike recorder. It shall contain a mechanical 6-digit display which will
register all lightning discharges.The recorder shall have IP 68 rated
enclosure and operate without relying on any other external power
source.Tested on 200kA fault level.
LIGHTNING STRIKE COUNTER:
Lightning Protection System- ESEAT :
NFC 17-102
Essentially meant to be placed at highest point of the roof indeed to cover more of the area, lightning-protection is
provided to every structure, building, personnel and property resides in it. JMV is up with Early Streamer Emission air
terminal (ESEAT) all-in-one Lightning Protection solution that uses atmosphere gradient to store energy.
During thunderstorms, when downward leader begin to approach the ground, ESEAT restrain the downward leader
and generates standard value-magnitude and frequency pulses at the extreme tip of the air terminal.The lightning
arrester capture, divert and release thunder-bolts ranging from approx. hundredths to thousands of volts through a
potential route and effective grounding.
The Air Terminal is a non electronic device based on the principle of Early Streamer Emission
technology.We have electrostatic and electromagnetic charges present in the set electric field. The device or the
lightning arrester gets activated at the point of density difference in the electric field prevailing round the lightning
arrester. In other words, ESEAT acquires its energy when the density of charges lies in respective electrostatic and
electromagnetic fields, changes.
20

53. RADIUS OF PROTECTION FOR ESEAT:
INSTALLATION VIEW AS PER NFC 17-102:
21

54. Surge Protection Devices
As per IS/IEC 62305-4:2010,“ Electrical and Electronic systems are subject to damage from a lightning electromagnetic
impulse (LEMP).Therefore, surge protection measure need to be provided to avoid failure of internal systems.
As per NBC:2016, “Permanent failure of electrical and electronic systems can be caused by the lightning
electromagnetic impulse (LEMP) via:
a) Conducted and induced surges transmitted to equipment via connecting wiring and
b)The effects of radiated electromagnetic fields directly into equipment itself.
AC Power SPDs – Class B/Type I, Class C/Type II, Class B+C
/Type I+II
As per NBC:2016 & IS/IEC 62305-4: 2010, Class B with typical
waveform 10/350 micro-sec to be used at main distribution panel;
Class C with typical waveform 8/20 micro-sec to be used at
secondary distribution board, or at a socket outlet.
Railway SPDs – Class B-230, Class B&C, Class C 24-60-100,
Class D-24-230, RJ11. POE, RS485, RJ45, BNC N UHF,
MDF/IDF LSA+
Railway Surge Protection devices are specifically designed as per
RDSO specifications to offer protection to railways and its
descriptive counter-parts against the effects of current surge hits.
Signal SPDs – F-type suppressors, BNC & N Adaptor
Signal SPDs are used to protect aerial elements like antennas, cable
TV, satelliteTV etc. It merely helps the smooth transmission of bits
between transmission and reception stations.
Security & Surveillance SPDs – BNC-CCTV, CCTV with
power port, RJ45 with power port
Security and surveillance SPD are introduced to offer solution for
the security systems and CCTVs that are incorporated in the
surveillance and control.
Dataline SPDs – RJ45, Power over Ethernet
Data line Surge Protection devices are integrated into the system to
safeguard LAN interfaces and Ethernet network.
22

55. Oil & Gas Pipeline SPDs – Pipelines Cathodic Protection
Surge Protector
Pipelines Cathodic Protection Surge Protector is spark gap based
technology to protect the pipe insulation & insulating flanges
against damage caused by lightning impulse and surge voltage.
Telecom SPDs – RJ11, MDFTechnology based, Network switch
Telecom SPDs offer solution against transient over-voltages and
induced surges creating threat towards telecom equipments,
telephone branches, network systems and telecommunication lines
walking parallel.
LED SPDs – LED 5kA/10Kv, LED 10kA/20Kv
LED Surge Protection Devices are used for the protection of LED
installation and lighting fixtures from induced transient and
aftermath of electromagnetic interferences especially in the exposed
areas.
Photovoltaic SPDs
Solar/ Photovoltaic surge protectors are directly involved with our
Photovoltaic electrical systems to provide a discharge path to
abnormal current activities. Photovoltaic power supply network
surge protectors intended to safeguard integrated solar modules,
monitoring systems and DC Side of the photovoltaic arrangement.
LATEST CODES REFERENCES
NBC : 2016
Clause no. 11.6.3.2,
Page 102: SPD to be
used according to their
installation position as-
a) At the line entrance
into the structure (i.e.,
at the main distribution
panel)
b) Close to the apparatus
to be protected (i.e., at
sub distribution panel).
IS 3043 : 2018
Clause no 5.6.2, Page 6:
Surge arresters are
recommended for
lightning protection.
NBC : 2016
Clause no. 11.6.4, Page
105: All SPD’s at the
service entrance to an
installation should be
able to divert 10/350
micro sec impulse
current depending upon
selected level of
protection.
23

56. Protection to Solar Business
With the growing demand of Green Power, world is focusing on Capacity Building with the prime objective to
enhance Solar Capacity. Solar Energy has become financially very attractive at both grid and rooftop level with cost
reduction in recent years.
“Solar protection is based on customized project designing and JMV is providing with end to end safety
solutions right from project designing till installation.”
PICTORIAL VIEW OF ENERGY GENERATION & UTILIZATION:
TRANSMISSION
&
DISTRIBUTION
NETWORK
HIGH ENERGY
STORAGE BATTERY
SYSTEM
END
USER
APPLICATIONS
ELECTRIC VEHICLES
OR
ENERGY
GENERATION
24

57. JC4 arrangement is fundamentally the combination of a plug and socket
design that stands for female and male connector.The connectors are
clubbed inside the cylindrical plastic shell and a square-like probe to
mark the suitability with different cable sizes (2.5, 4.0 & 6.0 mm2).
These standardized PV connectors alter every possible intrusion for
secure serial and parallel cabling of modules in solar photovoltaic
systems.
JC4 CONNECTORS:
TECHNICAL FEATURES
Amenable sealing solution
Thoroughly finger-safe & Promote locking mechanism.
Robust design provides Joint-collaborated connection.
Remain intact under water-pressure, fire etc.
Offers UV protection.
Ingression Protection- IP 68.
Crimped Connections.
Can be customized for several cable configurations.
Solar DC fuses are the devices that aim at protecting electronic
assemblies and electrical systems from events like over-voltage and
over-current.The standard in acquiescence with the DC fuse rating is
IEC 60269. DC fuses are majorly used in PV Combiner Boxes/ Array
Junction Boxes cascaded in Solar PV systems and is highly in rast to
eliminate the DC fault currents when PV panel or inverter faces an
unexpected overload or short-circuit.
Designed for:
Current Ratings: 10A, 16A, 32A
Voltage Ratings: Up to 1000V & 1500V
SOLAR DC FUSE:
25

58. A highly functional PV Array Junction Box is fabricated with the use of latest technology, best suitable for different
Solar Power applications.Array Junction Box is meant for combining all the incoming lines of low current, high voltage
PV panel strings.
SOLAR ARRAY JUNCTION BOX/DC DISTRIBUTION BOX:
Photovoltaic Multi-branch JC4 connectors:
TECHNICAL FEATURES
Enclosure Material is Polycarbonate.
Per string output maximum 30 amp.
Suitable for PeakVoltage up to 1000V DC.
Total output Capacity is maximum 200 amp.
DC Fuse with Indicator up to 30A, 1000VDC rating.
Water, dust & fire retardant.
Effective isolation with isolator switches.
With heat sink diode for reverse blocking current.
Over-current protection and short-circuit protection.
Suitable for outdoor installations with IP 65, 66, 67 rated enclosure.
Surge/ transient protection with JMV make pluggable Surge
Protector Devices.
Available in wide range from 1 to 8 strings or as per required
customization.
4 in 1 out with PV SPDs
4 in 4 out with pair of PV SPDs
String Monitoring Box is a string combiner box wherein
PCB/ Monitoring board is integrated into the combiner box to collate
multiple strings and gives a single inverter output. The main set
principle is to monitor number of electrical parameters like status of
input strings, fuse, surge protector, disconnector switch and so on.
STRING MONITORING BOX:
TECHNICAL FEATURES
Easy integration in monitoring systems, credit does to
Modbus/RTU communication.
Enclosure Material is Polycarbonate with unification of monitoring
card.
Low costs and wiring effort, as an additional power supply unit is
not required in the device connection box
Flexible expansion to cater the needs of residential, commercial and utility-scale projects with optional
voltage measurement of up to 1500V DC.
Available in various customizable configurations, designed and built with all relevant standards.
Transfer of data to high-level controllers.
For connecting & collecting per string output.
Configurable up to 24 assimilated input strings.
26

59. OUR Clientele:
and Many More...

60. JMV LPS LTD.
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+91-0120-4590000 +91-0120-4335001
info@jmv.co.in www.jmv.co.in