WHAT IS THE USE OF ANTIPUMPING CONTACTOR IN HT BREAKERS
Answer Posted / vinodg
Antipumping is preventing the continuos close/trip of
Circuit Breaker with single command during fault or
interlock trip exist.
ie Circuit breaker will close only once when trip signal
exist.
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
what is the chiller and working principal
features of hbc fuses
briefly explain principle of resistance welding
What happen in ups if phase reverse?
1. Can a 12v DC choke operate a 60v/12w PL lamp ? 2. Can a 230v ballast fire / operate a 60v/12w PL lamps.
in my industry we are using 3 step up transformers for induction heaters..i.e 415/580v and other are 11/440v.in power consumption does a step trnsformer makes any difference compared to step up?? plz explain
How to measure power in 2 or 4 or n phase circuit? Please give me a formula.
What is hipot test procedure?
Pls mail me utility & Dg related question with answer
what happen when increase or decrease size of lamp,light.glass.
The metal-enclosed switchgear and controlgear is subdivided into three types: 1. metal-clad switchgear and controlgear; 2. compartmented switchgear and controlgear 3. cubicle switchgear and controlgear. What is the main differnence between them. State some example.
An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The slip when motor stalls is A 1 B 0 C 13.33% D 10.33%
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
sir please send me iocl written test paper in my e-mail account. i'll be obliged to you........ thank u roshan
What is proportional controller?