What is the rating of switchyard battery charger and batteries?

What is the rating of switchyard battery charger and batteries? 
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1 Answer

Answer :

Switchyard is having Float cum boost charger of 282 V DC maximum and 100

Amps rated charger of six-pulse full wave thyristerised controlled rectifier.

Batteries are tubular 220 V DC. +ve plate is made up of low antimory lead selenium (Pb) and –ve plate is made up of paste plate type (O2). Container or tube is made up of polyester and glass fibre.

1. Momentary load 160 A / minute.

2. Continuous load 40 A / hour.

3. Cell voltage 1.8 V DC and total number of cells are 106 in battery bank.

4. Float voltage 2.16 V per cell to 2.18 V per cell.

5. Maximum system voltage is 106 * 2.18 = 242 V DC

Battery rated for 224 A for one minute or 80 A for 60 minutes.

Specific gravity 1110 ± 5 and specific gravity after 10 hrs discharge is 1150 ± 5. 
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