How the line trap works in substation...?

2 Answers  

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what is the thumb rule or formula for cable size and current ratings

1 Answers  

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In generation,transmission and distribution voltage frequency is either 50HZ or 60 HZ;why are only these frequencies?

2 Answers  

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which bulb is greater iluminited, 60w and 100w are conected in series?

2 Answers  

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what is the difference between MCCB and SFU in terms of their application?

2 Answers   Secure Meters, Tata Teleservices,

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Why dc supply is used for closing and tripping coil of ht breakers. What happen if we use only ups ac supply only.

12 Answers   ACC, JLL, ZETDC,

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how the speed of the gets motor regulated. does it draw the same current on the all speed level.

0 Answers   Danko,

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In 400KV Switchyard, we have used Circuit Breaker With PIR, what is the significance of PIR & why they'r used?

2 Answers  

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CORRECT INFORMATION ABOUT TRANSFORMERS,what actually transformer is?

6 Answers  

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Why distribution transformer secondary voltage is 0.433kV instead of 0.415kV.all other switchgear rating are 415 volt??

3 Answers  

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what is the advantage of Cathodic eathing system and what is the basic principle and how itis working, please explain clearly .

2 Answers   Meinhardt,

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define IDMT relay?

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

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