what is the ka rating of mccb.
and how it is decided .
Answer Posted / aditya shirbavikar
The rating of any circuit breaker is decided on the basis of its breaking capacity. so, the KA rating of MCCB is the unsymmetrical breaking capacity for a particular time.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
iam working in power plant. In hot places tube lights are glowing at the end portion only. what is the reason for that?
How many wall/floor flange will i use in bus duct system if we have in our design a 35th floor building.
which fault is severe and why?between lll fault and lllg fault which fault is severe and y?
Is it required to lay 2 runs of GI wires along with armoured cables from one power DB Machines of higher rating?
what is level 2 automation?
What is touch potential and step potential?
what is the function of anti pumping relays? what is KVAR? How it is generated in alternator? What is 3rd Harmonics? What is IDMT relay?
any body,pls tell me how to done relay coordination ? how to coordinate by TCC curve?how to read the tcc curve?
sir pls tell me . our ct specifications are 120/5 ,2 core , 0.2 and 5p10 class , 30va and 30va buden. insted of 30 va i want use 15 va. can i use?
what is the voltage between earth to neutral in lift.
This is urgent!! What is a Thyristor-based 3-ways selector switch with Zero crossing control? how does it operate and where is it mostly found in a system?
What is the difference between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?
why generator efficiency is more in swinburnes test?
what happend to DC shunt motor if its field winding insulation becomes slightly weak? will that motor can run on full load or not explain in detail. thanks
we use 400/5A ct and 35/roor3KV,/0.1/root3KV,0.1/root3KV pt ratio. What is the multiple factor of this meter.