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BATTERY -B. Prasad Chartered Engineer [email protected]

Battery

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

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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 . ---- 11. THANK YOU