What is erection of electrical system?

1 Answers  

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In an electrical power supply,why if neutral phase of a 3phase supply fail over current occur but if it's single phase supply neutral phase fail low current occur? 

1 Answers  

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Are same transformer be employed for step up and step down services?

3 Answers  

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Why do we choose 33kV transmission for industrial purpose and 11Kv for township?

1 Answers  

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for measuring current and etc.,why we use value of 1.732 in three phase calculation. not in single phase.why

3 Answers   Bhel,

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THERMAL CAPACITANCE IS MEASURED IN..................................................

0 Answers   SSC,

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An 11kv system consisting of an underground cable to a sub station about 300 meters away was shut down for about 10 hrs. On energising, it tripped off on earth fault about 10---20 mins later 6 times but since than it is not tripping.its already 3 weeks now. The SPAJ was found to be fine. what could be the cause.No test had been done to determine the cause of the trippings till now because of demand.

2 Answers  

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what is HI POT test

4 Answers   Suzlon,

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what are the basic insulation levels & what its Unit

0 Answers  

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what is the need of capacitor in transmission lines?and how it works.

2 Answers   SCCL,

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What is q factor?

0 Answers  

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1.what is the basic difference between surge arrestor and lightning arrestor and where we use it. 1.what is the difference between metal oxide without gapped lightning arrestor and with gapped lightning arrestor

2 Answers  

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