Answer Posted / rvr
simply
VCB- vaccum circuit breaker,used up to 35kv,3000A
vaccum quench the arc,long life
ACB-air circuit breaker,660v,10000A
large size,less life and more maintenance compared to VCB.electronically or microprocessor controlled...
boththe above CB's use charging spring to open the breaker
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
raleigh method
what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end
what is the advantage of connecting capacitors in delta than in star?
Define Electrical Insulation and examples of Solid,Liquid and Gaseous insulating materials?
what is different between phase and netural
How we can calculate the life of Lead acid battery
What is Delta Connection? What is meant by Forward Delta & Reverse Delta & How Will be the Connection in Power Transformers?
is it possible to say motor horsepower number without seeing name plate(when name plate damaged)
Do closed loops systems require manual input?
how r charge carriers produced
Which are resistive loads & which one are inductive loads : Refrigerator, Split air conditioner, ceiling fans, well pump, fluoresecent bulbs, T.V, CRT Monitors, Adsl Routers, C.P.U, Printers, Deep Freezers, Speakers, DVD Players, Microwave oven etc. ? Output Power for these Appliances Would be same like this : P = V * A * P.F Or would be changed ? thanks
How to configure the drives in PLC, through Profibus commnication. And to how to address it?
how to calculate units consumption for a 12 hp motor /hr.
when measure the core loss of three phase distribution transformer or three phase reactor loss, one phase shown negative watt loss. why??
What is T’Q and X’Q and X’D ? and what is saturated as well as unsaturated ?