Why use the VCB at High Transmission System ? Why can't use
ACB? Pls explain the ans.
Answer Posted / s syed mohamed
Actually the thing is vacuum has high arc queching property
compare than air .becoz in VCB ,the die electric strength
is equal to 8 times of air . That y always vaccum used as in
HT breaker and air used as in LT in these breakers employ
with high resistance intruption principle.
Is This Answer Correct ? | 39 Yes | 1 No |
Post New Answer View All Answers
how a resistor resists to flow the current?how an inductor oppses the sudden change in current?how a capacitor opposes a DC voltage.
what is magnetizing and demagnetizing current in generator and motor?
Can anyone explain me about the RLC based Impulse high voltage generator and how to and operation of Series resonant High voltage reactor...?
What is the instrument to check the rotating diode fuse of alternator in running conditions?
How DC earth leakage currents can be reduced ?
how to flameproof electrical motor on the shaft?
If Neutral Grounding Resistor (GR) failed/shorted. Is it repairable.
Can anyone provide with a SLD for HT panel installation for a 33KV line and distribution end has three 1.5MV transformers. Is it suitable to use OCB or VCB and also provide me the suitable rating and its connection diagram.
what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator
how to calculate singlephase motor efficiency?
What are the criteria shall be considers for sizing Fuse and MCB? If the rated current is 10Amps what should be the fuse size / MCB Size?
State ohm’s law?
hello!my name is sheikh iam preparing for indian engineering servieces,please send me the old question papers..to sheikhshaazforjobs@gmail.com
How can I calculate the Mega watts required to run a plant having many electric motors and other electrical components.
How to decide and select the different earthing wire size for the different types of earthing