What is working principle of ACB and VCB?
- 9 Answers
- 68228 Views
- Greenko, HCC, I also Faced
- E-Mail Answers
Answer Posted / n karthikeyan
ACB means "AIR CIRCUIT BREAKER" it is a Electrical power
supply protection equipment when fault occur in the system.
It is used in the Low Voltage application. The power supply
mechanical contacts are kept in the atmospheric air at the
time of fault, the breaker will trip the generated electric
arc ia quenched by the air.
VCB means " VACCUM CIRCUIT BREAKER " it is also same
equipment but used in the High Voltage application ( 11kv -
33kv ), here the power supply mechanical contacts are kept
in the vaccum sealed bottle, the vaccum will quench the arc
at the time faulty trip. The electric arc generation is
high when comparing with the ACB
| Is This Answer Correct ? | 88 Yes | 11 No |
Post New Answer View All Answers
234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,
what is motor capacity of 80TR chiller? and also say what is the formula related temperature, motor capacity, TR?
How to calculate the phase to phase clearness of HT /// LT bus bar?????
how does this job compare with others you have aplied for?
Air refrigeration cycle works on the
what is the best method of grounding in 30 MW generator?
What is the difference between a 3 winding and 2 winding Potential Transformer
What Is Connection APFC Panel In Compony.
Explain M Var? Which types of problem occurs when reactive power increase at the time of full load of plant and at the time of synchronize of plant?
I have made a 3 phase thyristor full bridge rectifier. But at the moment it is working only for the half bridge operation. Both the half bridges are on operation separately but when i put it into full bridge operation the oscilloscope output is zero. I rechecked that the pulses are correct for each thyristor. what could be the possible reason for this?
why current is constant on d.c?
What is the Surge for 1.1 Phase Induction Motor(For Eg.1Hp) 2.3 Phase Induction Motor(For Eg.1Hp) 3.AirConditioner(For Eg 1Ton) 4.Refrigerator(For Eg 180Ltr or 160kW) 5.Induction Cooker 4. Ceiling Fan
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
How to calculate phase to phase difference ?
What is the range of the stator resistance of 3 phase induction motor?
