Answer / ashish patil

For Operation of buzzolz relay it required loe liquid level
& formation of gases which can operate float,but in case of
PRD it required pressure with high capacity then PRD operate

Answer / abhishek goyal

when the short ckt or any other fault happening into the
transformer it will detected by the buchhloz relay (gas will
accumulate into the relay). if pressure into the tank is
above the set point of PRD/PRV it will activate. both are
safety device one can sense the gas other one can sense the
pressure.

If the supply voltage is same (say 440V) whether a system designed for 60 Hz frequency will work with 50 Hz frequency or not , if so pl. give clarification.

11 Answers   ABB,

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5 Answers  

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4 Answers  

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what are the differences between MCB and MCCB ?

19 Answers   Bhel, DLF, Omax,

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what is the current density of copper & alluminium.

0 Answers  

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List examples of current sources?

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What is PEC??Applications........

0 Answers   Emerson,

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1 Answers   Birla,

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2 Answers  

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how diside ct mf exmp.200/5 ct

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how much amp MCB is required for 1/2 kva power back up?

2 Answers   Havells,

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