How can calculate the earthing strip of Copper/GI for rating of 30kV,discharge current 10KA Lightning arrester.

0 Answers   Raychem RPG,

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What is diference between ELCB & ELMCB?Also how its application for use in design area?

2 Answers  

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Which Current transformer will be bigger in size, 400/5 or 400/1 & why?

2 Answers   Apollo,

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which type of A.C motor is used in the fan (ceiling fan, exhaust fan, padestal fan, bracket fan etc) which are find in the houses ?

25 Answers   Airtel, MPPTCL, USSA,

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Why do you have to use Protecion relay with the function MTB ( Mechanical Trip Button ) for electrical system.

0 Answers   DT Technologies,

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Dear all i want to know SEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me zohairaukllah@yahoo.com

0 Answers  

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why are we using multiples of 11 in substation.

2 Answers  

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What is the need of ISOLATION Transformer?

1 Answers  

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What is spill current in protection relays?

1 Answers  

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Our transformer capacity is 500kva & voltage ratio is 11kv/433v step down tf.Now i need to know if my input voltage is 10500v and what would be the secondary side voltage i.e output voltage ?

3 Answers   Helma,

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There are different classes of protections in power plants.class a,b,c are clear..is there any class d and e r there..and elaborate class b protection.

0 Answers   GMR,

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WHAT IS LOAD CELL

0 Answers   AP, TATA,

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