How to calculate the breaking capacity(like 15ka,20ka) of
Circuit breaker (MCB,MCCB,ACB)
- 9 Answers
- 79701 Views
- Career Excellent Sdn Bhd, Neona, Northern Max Engineering, Sps Renewables, Terasaki, UEM, I also Faced
- E-Mail Answers
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
how to identify the cable quality and what is flame proof cable
what is cogging and crawling
Post possible questions for Power Factor Panel FAT / SAT
The capacitive reactance of a capacitor of 1/(2(PI)) F at 10^3 H is
how to operate and maintenance of 1500 kva diesel generator set
what is the current density of copper & alluminium.
What is the basic rule for block diagram reduction technique?
What is the difference between shortcircuit current, rated current of cable & MCB with example? What will be the size of cable required for 5.5 KW motor (Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.
How does HT work & Voltage required?
Hi,iam a diploma in electrical engineering.rtd from indian air force in apr 2007.prsently working in reliance next link as a network maintenance engineer since 2007,can i get a job in motherson sumi.
We normally make oil soak pits under Transformers. Oil from soak pit goes to collection pit. We provide granules/pebbles under transformers. My question is weather granules/ pebbles to be filled in soak pit or not? if yes upto what level?
WHAT WOULD BE THE FORMULA OF WIRE GAUGE FOR A FULL LOAD CURRENT
are there rmu for 3 transformer?
why cable i burning without tripping. how can protect led street lights
what is mean by D.O. in distribution line poles?
