what is difference between 9kv 5ka surge arrester and 9kv 10ka surge arrester.

0 Answers   Voltamp,

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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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Recently we had experienced following problem All RCCB breakers (connected to the load as well as spares) connected to various UPS systems at various floors at a high rise building tripped during a power break down and upon starting up of generator.This Generator is recently inducted into the installation. Can any one explain the reason behind this tripping. Regards Viswanathan

1 Answers  

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why we dont store the ac power in battery?

1 Answers   TCS,

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DIFFERENCE BETWEEN TRANSFORMER AND CURRENT TRANSFORMER?

7 Answers  

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Please explain the following and how these are working with PLC unit 1.I/O Module 2.I/O Device 3.Adaptor Card 4.Ribbon Adaptor 5.RS 485-FC

0 Answers   Shree Mayur Engineering,

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what is the most probable reason of failure of current transformer?

2 Answers   L&T,

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How to connect a Restricted earth fault relay for 2000KVA,11/0.433 KV Distribution Transformer and What is the neutral CT ratio should be selelcted for 2000 MVA Transformer for estabilishing the Restricted earth fault relay

1 Answers  

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How would you supply a single house hold load from a 3-phase supply coming out of a sub-station?

4 Answers  

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How can we measure the frequency of a rotor running in full load condition? Explain the method of measuring.

2 Answers   Wipro,

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in ct secondary one terminal is connected to earth why?

1 Answers  

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IN CABLE TRENCH WHY FILL UP THE SAND. AND WHAT IS THE DIFFERENCE BETWEEN OVER HEAD AND UNDER GROUND LAYING THE CABLES

2 Answers   Cable Wireless,

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