battery is used in substation for control circuit power and for emergency light.

1. BATTERY
-B. Prasad
Chartered
Engineer
amieclub@gmail.com

2. TYPE OF BATTERY
 Vented / Flooded
Lead Acid
batteries
 Sealed
maintenance
free
batteries/Valve
Regulated Lead
Acid
 Nickel Cadmium
(Ni-cd) batteries

3. Lead acid battery

4. Battery cut view

5. Connection
36 V
12 V

6. Vented / Flooded Lead Acid Batteries-
two type
Tubular
 Normal life 8-10 years
 Nominal cell voltage is 2V/cell.
 first charge at 2.6 to 2.7 V/cell.
 Away from delicate electronic
equipments.
 It needs separate room/racks
with acid proof tiles for
installation
 regular maintenance to check
specific gravity, to add water
and acid
 initial charging take about 55
to 90 hours.
Plante
 normal life 15-20
years.

7. VRLA/SMF type Lead acid
battery
 Being sealed, these batteries do not emit
any fumes
 Normal life 3-5 years
 Nominal cell voltage is 12V/cell.
 Float voltage 13.8 Volts
 SMF batteries should not be left in totally
discharged state more than 72 hrs.

8. Nickel Cadmium Batteries (Ni-
Cd)
 Normal service life is 20-25 years.
 Nominal cell voltage is 1.2 V/cell
 Initial cost may be approximately three times
 Used in hazardous environment such as
chemical, fertilizer, cement industry.
 Batteries occasionally demand boost
charging, 1.4 V/cell

9. APPLICATION OF BATTERY
 UPS
 Battery charger in switchgear
 Inverter
 Automobile
 Solar plant
 Solar light

10. ACT FAST AND INITIATE
FIRST
 बड़ा सोचो
 तेजी से सोचो व
 सबसे पहले सोचो
 िवचारो पर िकसी का
 एकािधकार नही होता.
---- धीरभाई अमबानी

11. THANK YOU