Answer / jithin

VCB is designed for HT it has vaccum chamber that prevents arcing and it triping speed is higher
ACB is desined for LT the terminals are almost open to atmospere it can cause flashing if we use it on HT

Answer / 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

Answer / maurilio

if you use a VCB in low tension it odes not make problems
but if a ACB or Air Circuit Breakers in HT you will see a
lot of ligthning and probably fire in the breaker
So it is no convenient to use a ACB on HT

Answer / sushil kumar

Vcb is ht supply use rating of high voltage but acb lt supply used this manufacture 440 voltage difference for relay siting vcb and acb vcb is use closed area but acb use open area

Answer / hardik

As per Karna ACB is not usfull in HT because of its limited
capacity but in casw of VCB apply in LT it can dafinatly
helping out after making its ragular reliese setting and
tripping in foulty condition is depend on relay... so VCB
we can use but drow back is VCB in LT system it is more
expancive then ACB thats it...

Answer / kishore

actually acb is made for LT bcz EVERYTHING HAVE A LIMIT,SIMILARLY IF WE USE VCB AT LT THEN NO PRBL BUT IT IS A GREAT ECONOMIC LOSSES FOR US OK.

how power factor improves by connecting syncronous motor

2 Answers   ACC,

how to calculate

0 Answers  

what are the industrail measures to overcome ferranti effect? how would the ferranti effect the power system if those remedial mearsure arent taken? how often does this effect occurs in real power system? plz reply

3 Answers  

what will happened to give the dc supply to ac transformer?

3 Answers   Sail,

why any inductive load need free wheeling diode?

4 Answers   Essar,

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

0 Answers   Sabre,

HOW TO DRAW THE VECTOR DIAGRAMS OF A Dyn 11,YdN 1 transformers?

0 Answers  

How ships are protected from lightning?

1 Answers  

what is the relationship between phase & neutral

0 Answers  

OHMS LAW

9 Answers  

how much current capacity of 300 sq. mm cable (4 core aluminium) and 150 sq. mm cable ( 4 core aluminium)

3 Answers   Bhel, RR Kabel,

why receiving end voltage increases in a system when capacitive load is added

1 Answers