What is the basic difference among Circuit breaker,Contractor and Isolator? Are they different names of same device/equipment?

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What are the reason of unbalanced secondary voltage of HT transformer 33kv/6.6kv ? Incomming voltage is balanced.33kv each secondary voltage 6.6 kv 6.4 kv 6.4 kv At no load conditions.

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In a company has been installed an analog amperemeter, this company was suplied by generator X, there is no problem in the ampere meter, rigth now this company's supplied by generator Y then the pointer in amperemeter vibrating. What happened? Why? Thank's

2 Answers  

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We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?

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why no load voltage is greater than full load voltage?

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WHAT IS OLTC OF TRANSFORMER? WHERE IS ITS USED EITHER ON PRIMARY OR SECONDARY SIDE OF TRANSFORMER?

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why the power factor of the induction motor is low?

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What is the Different between CT Class-0.2 & Class-0.2s ?

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What are test values for an 63 KVA and 100 Kva Distribution Transformers for the following typical tests 1)Magnetic balance 2)Short circuit test 3)Open Circuit test 4)Vector group confirmation test .please give me the standard values for all the above tests.

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how i can calculate the size for fire cable

0 Answers   Adani Power,

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WHY TRANSFORMER RATING IS MENTIONED IN KVA RATHER THAN KW

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who is make controlling in the reactive power that genarted in AS genrator(the exitaion currnt or exitation voltge)

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