Answer / senthil

Cb beakers selected depending upon the load current. 16amps,24amps
etc like this cb are available in market.cv will trip(cut off the supply) the
load circuit when short circuit or over current flow occurs.

If a HV Underground Cable (13.8KV) is layed in the ground below 1.5 Mtrs and any building construction is done on the Cable route. IS this allowable or Not? What should be the clearance. As per ISO construction on HV cable route is safe or Not? Why? Can any body suggest the site for my question?

1 Answers   ZCL,

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I did oil BDV test of 1600 KVA trafo 20KV/400V as per IEC 156. Result is 1) 58 KV 2) 58 KV 3)40 KV 4) 50 KV 5) 58 KV 6) 18 KV. Avr is 47 KV. Can we say oil is still ok even in the 6th test BDV is 18 KV ?

1 Answers  

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by using pump duty, how we will can calculate the motor duty(KW)? is there any standard or formula.

0 Answers   HP,

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On a 3 winding transformer YNynd11, how do you apply REF protection to the Delta tertiary winding that is supplying auxiliaries to a substation?

0 Answers   Kwekwe Polytechnic,

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how can I calculate charging current of cable/overhead conductor? what is roll of voltage in it ?

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What is excitation in case of dc motor?

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how u calculate ups battery backup

2 Answers  

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Iin ESP why positive is grounded ? why not negative ?

0 Answers  

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what is ten delta test? what is the significanse of it

1 Answers  

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what are the values of VRY,VYB,VBR,Vry,Vyb,Vbr,Vrn,Vyn,Vbn for Magenetic balance test of 100 KVA and 63 KVA Distribution transformer

0 Answers  

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if a bird sits on the service wire it didn't get shock then why the human get shock when he touches it(assume that human is not on the ground and any object i.e. in space)?

5 Answers  

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why the substation require din electrical system?

1 Answers  

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