Answer / s.j.shukla

Hypo test is HIGH VOLTAGE test according to voltage rating under test. Say for 415 V , AT 2KV /4KV as per customer requirement & for 11 KV , 28 KV OR SO..bASICALLY IT IS ACTUALLY HIGH VOLTAGE TEST. However meggering is a measurement of DC equivelent insulation resistance of any insulation.

Answer / umesh chauhan

hi pot is hi potential applied to the system for checking the leakage current but this is not measured with meggering .

What shall be minimum thickness of firewall in between two transformers and which code specifies it ?

1 Answers  

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what is the condition for vector group of Dyn5

2 Answers  

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what is the differnce between ac and dc?

5 Answers  

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How could I get a certificate of competency as Electrical Supervisor? I have completed By BTech in Electrical this year(2012) for VJTI Mumbai Maharashtra. Is it compulsory to be produced while joining?

0 Answers   ONGC,

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why slipring motor , at full speed run as squirrel cage motor?

1 Answers  

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If the capacitor feeder is switched ON without any load, is there any display in the ammeter at the incomer?

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When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<

0 Answers   Lupin,

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what is the difference between 11kv and 13.8 kv? why we can't used one of these 2 sources?

2 Answers  

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What is the basic principle of circuit breaker?.. I read that it works on electro-mechanical principle... Does it require both electric n magnetic conversion to act?

3 Answers  

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What will happen if we on 200kvr capacitor bank(11kv in bus)If there is low load on transformer (1.5 mva 33/11 kv)

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Is it possible to convert Dependent sources to its equivelent current or voltage Sources ?????

1 Answers   Zen Technologies,

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Classify drilling machines.

0 Answers   Ashok Leyland,

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