MCCB 400 Amps 50KA 430Volt AC
What is mean by 50KA
Answer Posted / s.arunkumar
As per the standards for different voltage level there is
different short circuit fault value.
For ex: 11kV is 31.5kA and for 430V is 50kA.
ie., the breaker can withstand the short circuit of 50kA.
| Is This Answer Correct ? | 10 Yes | 11 No |
Post New Answer View All Answers
Make a list observation on Transformer?
How to design pavement quality concrete by using C.R.C.P Method
When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<
why we need to us lenz's law for synchornous motor
What are the advantages of the three-phase motor over single phase motor?
What is stacking factor? What is its approximate value?
diff.between servo motor and ac motor
Is it required to lay 2 runs of GI wires along with armoured cables from one power DB to another Power DB?
What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?
If oil and air can withstand a high MeV when used as an insulator in a transformer, what are the values of how high for each material?
tell me about eletrical contractor
Is electro plating what type of load whether resistive, inductive or capacitive loads
what is breathing?
how to avoid Saturation in C.T?
what is ATS & RING MAIN UNIT in Distribution System?And its Function.