How can we check ELCB trip current sensitivity
How can we check earth resistance value
Answer Posted / sudhir patil
1] By using ELCB Tester
2] By using EARTH PIT
| Is This Answer Correct ? | 7 Yes | 2 No |
Post New Answer View All Answers
How is the connection of the tap changer on the HV side been made?
can anybody sent me power grid questions. what subject should i prefer for preparation?
What is the difference between electronic regulator and ordinary electrical rheostat regulator for fans?
If the line voltage is reduced to 75% of its rated value then by what percentage current will reduce ?? 75% 25% 50% no change and why ?
Please clarify, 1. Is it required to lay two runs of GI wire along with Armoured LT cable if it is laid between one big mains (63Amps TPN SDF) to small main (32A TPN SDF) with proper glanding termination? 2. If the armoured cable with proper glanding is laid from DB to CNC machine, is it required to run two runs of body earthing to the Machine from DB? 3.If the armoured cable with proper glanding is laid from Substation to Hangar, distance is approx. 100 mtrs, is it required to do earthing at shop area though the primary termination at substation is earthed through gland.
I WANT TO INSTALL LIGHTING ARRESTOR ABOVE 20 FEET HEIGHT INDUSTRIAL BUILDING. NOW IT WAS 15 FEET HEIGHT HOW MUCH DISTANCE IT WILL COVER & HOW TO CALCULAT THE DISTANCE COVER BY THE ARRESTOR
Following test should be conducted to find out relative polarity of transformenr terminals A no load test B back to back test C phasing out test D none of above
how a.c. genarator control power factor when its conected to grid supply by incrising or decresing excitation voltage.
all interview questions with answers of ntpc (2000-2009
What is current & voltage ? Voltage perform at any load without current or not?
How to calculate phase to phase difference ?
what will happen if the prime mover on the field excitation of the on-coming generator fails?Explain.
What is the diff. between single compression and double compression gland
Why dry type cast resin transformers tap link blast in HV side while power shut down times on load?
What is the formula to find out two phase active & reactive power