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List various miscellaneous equipment at control post. State use of each.

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Ans: Miscellaneous equipment at control post or switching substations & functions: 

1. Lightening arrestor: protection against voltage surges 

2. Auxiliary transformer: provides 230 V, 50 Hz, supply to operate battery charger, remote control equipment, signally and lighting. 

3. PT: provides continuous indication regarding the condition of supply. 

4. Battery: for operation of remote control equipment and interrupter. 

5. Battery charging equipment: charge batteries at the control post.

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