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
What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side
what are inherent currents?
How to do bus bar short circuit calculation for 230KV/11kv, 60 MVA Substation?
transformer phasor diagram under load explain it?
what is RFID? thire application;
Draw the single line diagram of the power station?
What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?
Any one can explaination about calibration with rotating sub standards?
hi frnz,can somebody give me any project work? i am a 2nd year student & interested in practical works...plz give me some projects
in 6.6 kv vaccum circuit breaker vaccum bottole vaccum capacity ????
can we use NPT glands in LT panel
Please explain me about Relay curves and their sources to read ?
how is the cable tray designed & how its total length is calculated for an Industrial plant Say for Ex. (500KW Motor Load)
What is the different between digital phase converter and ordinary phase converter?
HOW DOES THE ELECTRONIC ENERGY METER WORKS?