Answer Posted / srajan
The insulation of transformer winding is tested with megger..it is tested as insulation of lv to earth , hv to earth and hv to lv..it is commonly known as IR testing..its value will be different according to weather..changes drastically in monsoon..
| Is This Answer Correct ? | 19 Yes | 0 No |
Post New Answer View All Answers
Difference between Earthing Truck & Earthing trolly for HT panel
what is advertised hop count
How is efficiency of DG set calculated? At many places I found the efficiency to be mentioned in percentage. But at some other places I found kWH/ litres. I want to know how dimensionless percentage value is arrived at?
What should be the Sandwitch type Al. bus bar capacity for 2 M.W.Gen. set, having continuous full load current- 3463 Amps,ambient temp.- 50 Deg. C., Required temp. raise-20 deg.C., it will run 24 hrs, 365 days on full load, required highly reliable.
We have 750KVA DG set, we want to introduce REF relay with 1250/1A,CL PS,Current transformers.The lead distance of 2.5mm copper flexible cable from CT to relay is around 5mtrs.We would like to know the knee point votage(VK) & IM calculion for CT's
Why use the vcb at high transmission system ? Why can’t use acb?
What is conventional thermal current (Ith)
In ups static switch if i gives the supply at output end it will open the circuit in stactic switch or not if it will open then how it operates.
What is meant by vector group
1. Can a 12v DC choke operate a 60v/12w PL lamp ? 2. Can a 230v ballast fire / operate a 60v/12w PL lamps.
what is the advantages og idmt relay over magnetic relay??
Why air circuit breaker off due to power failure?
how to find the torque of the single phase synchronous motor by doing an experiment
What is a dominant pole?
sir i applied for hpcl(electrical).i want to know from which subjects most of the technical que will b asked.and pattern of the written test.pls help me
