In Air circuit breaker LSIG protection unit is used. Without fault in cables (2

In Air circuit breaker LSIG protection unit is used. Without fault in cables (2 runs 3Cx150Sq.mm Copper, 1Kv grade, XPLE armored cable IR value is more than 550Mohm @ 500V Megger) and load section Long time Overcurrent protection is triggers and trips the unit.

We changed LSIG protection with new factory tested unit. Even then fault is persisting.

Please suggest the possible causes

Question Posted / navaneeth

0 Answers
812 Views
I also Faced
E-Mail Answers

No Answer is Posted For this Question
Be the First to Post Answer

Post New Answer

More Electrical Engineering Interview Questions

We have Diesel generator of 200KW but load connected to it only 100KW. Pl. brief me about fuel consumption.

4 Answers ARDE,

Why the ratation of fan is anticlockwise all over the world?

2 Answers GNFC,

what is the function of turbo in dg sets

1 Answers

how to give earthing in ships?

1 Answers

what is the Knee point Voltage?

3 Answers AAPT,

What is the instrument to check the rotating diode fuse of alternator in running conditions?

0 Answers

how much mininmum length required to conduct a DC Hipot Test on 33kV AC Cable with 45kV DC? Is it 20meter or Less then 20?

0 Answers ABB,

What is a system?

0 Answers

What is meant by vector group

0 Answers GPSC Gujarat Public Service Commission, VA Tech Wabag,

HOW DO A DISTANCE RELAY SENSES THE FAULTY ZONE.

5 Answers

Frequency in the control system represents? Continuous system in time domain ? In frequency domain?

1 Answers CCP,

1-What is the difference between absorption factor and polarization factor in insulation resistance test in transformers? and why we inject until ten minutes to get polarization factor?

1 Answers

For more Electrical Engineering Interview Questions Click Here