Why the rating of the HT breakers are in 1250 Amp, while
the load on the breaker is around 50 Amp. ?

Answer Posted / shan80

there is no necessery to use 1250 vcb for 50A u can use
630A vcb for that load.1250A is only manifaturing capicity
630A vcbs also available and these rating r standard. 1250A
rating is only normal current rating not shot circuit rating

Is This Answer Correct ?    7 Yes 5 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is frequency response?

658


hi frnz,can somebody give me any project work? i am a 2nd year student & interested in practical works...plz give me some projects

1506


What is Electrical Grade Aluminum for Tubular BusBars. i am confused between 6063 and T6 or T5 and what is BS 2898 and BS 159?

1428


What will happen if we introduce negative feedback to a control system that uses a positive feedback?

684


What is difference between isolator and circuit breaker?

626






WHAT IS MEANT BY TV TERMINAL IN 500MVA TRANSFORMER?

1718


what is earthing transformer? draw the winding dia.of earthing transformer.

1244


when qty of cable being purchased is not sufficient according to the standard,what should the inspector do to ensure its quality according to the standard?

1539


Why hydropower stations are preferred solution for meeting peak loads in grids?

579


How to check the cable fault / hv test of transformer cable.

1405


the grid connection required for a 50 MegaWatt fotovoltaic powerplant is higher or lower than 35kv (high or medium tension)?

1442


WHAT IS THE USE OF PIG TAIL IN WINDOW CT ?

1930


What are dependent sources?

666


what will happen if synchronous machine rotor fed from single phase ac supply 

1305


internally connection of photvoltic module

1463