how much current capacity 250 amp. mccb please tell me about
whats are the reasons to trip 2 or 3 times in a night. and
what are the steps to short out this problem

Answer Posted / k.k dash

kindly see the breaking capacity of 250 amp mccb,if it trips more than two times kindly replace the mccb with new breaking capacity such as 25 ka, 35 ka,or 50 ka,so that it capable for taking the current

Is This Answer Correct ?    4 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

and gate circuit diagram,amplifier circuit diagram

1597


HOW MUCH CURRENT DOES SYNCHRONOUS MOTOR TAKES AT SYNCHRONOUS SPEED IN NO LOAD CONDITION ?

1450


What is meant by bus bar protection?

647


How to calculate approximate load loss of a distribution transformer by knowing %ge imp of transformer?

1750


power transmission pole used one support , that only for support or earthing

1432






Both generator parallel condition shared load equally but one genrator taking ampere more than the other what are all the causes to make like this

1246


i want use the cable size 16cx4 core aluminium usege watts 240x2000w this cable size is correct?

1789


what will happen if there is a voltage leakage or current leakage in an electrical train

1509


Compare salient pole and cylindrical rotor machines.

1462


How do you compute voltage drop and cable size over distance?

1761


Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir

1435


HOW WE CAN REDUCE THE CIRCUIT COMPLEX OF STAR-DELTA STARTER .BECAUSE NOW WE USING ONE TIMER RELAY & THREE CONTACTOR FOR MAIN,STAR & DELTA ?IF ANY IDEAS PLZ POST.THANK U

2006


why normally Generator rating are between 11Kv to 22Kv?

3732


draw 3 phase rectifier diagram

1721


what is PID control in VFD drives?

1509