How to calculate the breaking capacity(like 15ka,20ka) of
Circuit breaker (MCB,MCCB,ACB)
Answer Posted / jitesh patel
we must know load of perticular equipment.
For Ex. Our load in MVA is 50 MVA
Our system voltage(MCB,MCCB,ACB) is 440V.
I(Bre)= 50/(1.73x0.440)=65.6 =Approx 65KA.
Our load in MVA is 20 MVA
Our system voltage(MCB,MCCB,ACB) is 440V.
I(Bre)= 20/(1.73x0.440)=26.2 =Approx 25KA.
Is This Answer Correct ? | 79 Yes | 50 No |
Post New Answer View All Answers
What is rotary phase converter?
Why 15Amp. MCB is suitable to carry load of 1.5Ton Ac please Explain?
Sate maximum power transfer theorem?
what is laser diodes?
What is distance between electrical panel to land ?
hai friends i have BSNL JTO exam on next month so if any body have model question paper or give preparation tips to my mail id kumar4486@yahoo.co.in this will helpfull for my future .plz & thank u by kumar
what id a dry type transformers and its function ?
What the difference between three phase contactor (coil 110vac) & three phase SSR (control voltage 110Vac)? May I use contactor in place of SSR?
What type of core material is used for metering C.T and protection C.T???
what is Fault level? why it is calculated? how will u decide same for our plant?
Why there are some equipment(i.e:TV) that using 2-pin plug instead of three? What happen if there is current leakage? Are we going to get electric shock??
what happens to the water pump if ground water level is slowly decreasing?our water pump is varying from no-load full-load due to this problem
What is the effect of positive feedback on the stability of the systems?
How capacitor improves pf
I WANT HOW CALCULATE TO CABLE FOR WELDING PLANT ?