Answer / k.prakashchandra

When the ups voltage = battery voltage,Number of batteries
required = desired back up hours x load /V x AH of each battery

some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?

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what is Bucholtz Relay test???? Explain??

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How do you select the pickup value of the relay?

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Is there any question in the name of Static Switch in UPS??

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