We use ACB in LT and VCB in HT.But if we use VCB in LT and
ACB in HT that what will be the effect on the system or any
power range?

Answer Posted / karna

HT Line Means 6.6KV,11KV and 33KV. LT Line means 415V. So
the ACB are Manufacutered for LT side because , based on
shortcircuit KA busbar terminal are designed in ACB . In HT
line while switching On & OFF ARC will be more it will not
withstand in ACB . IF we use VCB in LT side , the VCB will
not helpfull at fault condition, because its upstream
breaker will trip or component will damage

Is This Answer Correct ?    17 Yes 5 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What type of DC motor would you see for a lift?

653


how to determine ct ratio in ht vcb?

1343


what happens when dc generator coupled with cycle shaft.also explain what happens when its loaded

1661


ELECTRICAL DRIVES: can a motor load system with passive load torque can have equilibrium speed in second quadrant

5654


1.What is captive power plant? 2.What is national grid?Give brief idea.

1707






how you configure motorvision relay (L&T make)from DCS

4331


i will applied in 1U-1W on 440 volt primary delta side. what is the result of magtic balance test

1386


diff b/w normal grounding and resistance grounding

1417


What should be the length of transmission line so that we can see/obtain the full sine wave of voltage??

1418


What is vaccum currcuit breaker.define with cause and where be use it device?

636


The electrical energy required to raise the tempreture of a given amount water is 200 kwh. If the heat losses are 20%, the energy required is?

1520


Explain in brief description about the operation of DG sets.

1883


what are factors comes under relay setting (distance relay 7sa52) under OPEN DELTA VTs connection??

2120


How generating electric power export to grid from the generating station ?

1413


what is the working process of over & under voltage relay.

1632