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 / mehdi
there wasn't any Falctuation in cicuits. it is strange that
if any problem occured in one circuit others may not be
failed!
I solved my problem by replacing those ELCB with 300 mA
Type!
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
hi, could someone help me to find a control design for syncronising panel .
what types of electrical & mechanical test conducted in switchyard?
33kv substation lay out details & line to line & line to earth measurements
WHY SEPARATELY EXCITED MACHINE NEEDS EXCITATION BY DC SUPPLY WHY NOT BY AC
Does the direction of rotation of d.c. Shunt motor would get reversed if the armature current and field current both are reversed?
What is warm / cold start of HT motors. How many warm start & cold start are possible in a day?
by using pump duty, how we will can calculate the motor duty(KW)? is there any standard or formula.
why industry prefer ht motor instead of lt motor.
How I calculate the ELCB for circuit breakers?
what happens when series resonance occurs?
What are the disadvantages of thermal power plant?
can anyone explain the star-delta motor control wiring ,which wire go where and how they operate?
draw the block diagram of fire alarm?
how many joint can done in HT line and what is life of the joint
WHAT IS START TO INDUCTION MOTER IN STAR TO DELTA OF >5HP ?