what is the difference between ac and dc hipo test of cable?

Answer Posted / velappan

normally the hypot test is carriedout by DC only
but for AC ,huge size equipment is required for testing

Is This Answer Correct ?    0 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is the requirement regarding earthing of Single conductor with AWA

1717


How REF protects transformer alone? explain with diagram.

1074


What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?

1397


Difference between ac parallel circuit and ac series circuit?

1668


what is the Pickup/drop off ratio in BCPU relays

4247






In parallel operation time both NGR’s close or not close if both close what will happen

3343


comparision between ACB and VCB

1978


what is PDU in transformer?? which company manufacture??

1439


wat system call?

1589


what will be project cost for 100 kv transformer connection under oyt scheme.

2494


is it possible to turn on the single phase star delta on delay timer using 24 v dc ?

1537


what is mean by restructuring power system?

1622


how to Select its CORE in electrical cables based on its applications? or Application of various types of electrical cable based on it CORE?

2841


FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?

3047


How vfd saving power.

1635