I am an electrical power engineer and arranged power system
for a data center, I installed MCB, ELCB and erthing system
TN-C-S.
But some times several ELCBs Disconnect circuits at the
same time! what may be the reason? (the ELCBs are 25A ,30mA)
Answer Posted / k.p.sharma
Mr.chandra & mehndi is right and the normally mA of ELCB
used IS AS BELOW:-
1. FOR DOMESTIC = 30MA
2. FOR COMMERCIAL BUILDINGS ETC = 100MA
3. FOR INDUSTRIES = 300MA
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
Why does an induction generator is preffered as compared to synchronous generator in especially a wind energy power production project?
What is voltage ratio of a transformer?
What is the difference between a verilog task and verilog function?
PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F
How to work meggar?
what are the range of memory address in plc for L&T lx7 4A
How much ph is maintained of water electrolyte which is used in LRS for 1200 kw slipring induction motor ?
what is calculation mathod/formaulla for deciding Size of busbar (Copper/ aluminum)for L.T. panel on Various Fault level like 50kA,25kA,10kA
1600 KVA ka transformer hi aghar lt side par 800A aur voltage 420 ho to HT side ki cable ki rating keya ho gi?
What is the real function of reverse power relay in generator panel while syncronising?
how to measure dc earth leakage current?
What is a differential amplifier? Also, explain cmrr.
Why the power factor improvement is so important in industrial loads
What is meant by vector group
how to do the ductor test?