Why we are testing a tan delta test in transformer? which purpose conduting that test? and time priode test?

1 Answers  

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Is it necessary to carry out sheath test after cable jointing? If the value is zero of such instance , is it ok to energize the cable?

1 Answers  

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single phase 230v three phase voltage 415volt why we aren't used line voltage 690v?

7 Answers   Citec,

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In some countries it is found that an Earthing Transformer is connected at the LV sides of the Transmission and Distribution Substation Transformers.Actually what is the purpose the Earthing Transformer?

1 Answers  

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how to select the cables based on amps ratings ? how to calculate the amps and how to select the cable size

1 Answers   JV Electricals,

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New istallation how many eathing have one transformer? Names of earthing connect places?

10 Answers  

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can i used 400A SFU (for the use of PA fan motor),if my BUSBAR rating is only 315A?????answer me quickly as possible.......thanks

1 Answers  

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How are load losses and no-load losses measured at site in a DG set?

0 Answers  

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define IDMT relay?

15 Answers   APGenco, Bhel, L&T, Shriram Finance,

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The exciting current of a transformer is non sinusoidal. why?

2 Answers  

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DG lube oil and waste oil how to dispose outside and there is any authorised vendors will be there for this.

2 Answers  

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what is auto transformer?

4 Answers  

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