tell me about sf6 breakers

4 Answers  

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If a manufacturer decribes a power supply transformer as providing a secondary voltage of 24 volts when connected to a 240 volts supply, do you think they are refering to the full load or no load secondary voltage?

3 Answers  

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Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?

0 Answers  

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what is purpose of using reactor in substations.

20 Answers   Heavy Engineering Corporation Ltd HECL,

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What is meant by RVT and NDR ? expansion and details of it

0 Answers  

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In radial network the source is fed from 1 end both ends at central

0 Answers  

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ho can we calculate the conductor insulation value according to their ratings like voltage,current etc.how insulation value related with voltage,current and power of amachine

0 Answers  

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what is the disadvantages of common earthing for AC and DC equipment? (i am talking about inverter control room and inverter duty transformer earthing is common...?)

0 Answers   TATA,

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what is the pre commissioning test to be carried out on LT power panel at site?

1 Answers  

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Why does inductor is connected to dc supply? or what is the role of an inductor when connected to DC source?

3 Answers   TCS, TRR,

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what is RFCT and Insulgard Relay & It's function?

0 Answers  

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What is LT Breaker Panel?

1 Answers  

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