Interested to Buy Any Domain ? << Click Here >> for more details...
How to calculate the breaking capacity(like 15ka,20ka) of
Circuit breaker (MCB,MCCB,ACB)
- 9 Answers
- 83618 Views
- Career Excellent Sdn Bhd, Neona, Northern Max Engineering, Sps Renewables, Terasaki, UEM, I also Faced
- E-Mail Answers
Answer Posted / t s gupta
Breaking Capacity of MCCB is pre-calculated permissible amount of fault current (value of current can flow from contacts before opening/tripping the MCCB without damaging) which may facilitate the safe operation of MCCB and distribution transformer both.
It shall be calculated/derived from the distribution Transformer MVA rating and %impedance = kVA*100/ system voltage of load side * % Impedance rating
e.g. 20 kVA transformer with 5% Impedance, secondary voltage 440V i.e. 0.440 kV
Fault current Isc = 20*100/.440*5 = 10kA approx.
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
What is the Current equation in series RLC circuits.
how do u gauge the size of the cable ?for eg. consider a 300 sqmm L.T Cable.How do u determine the size of the cable seeing it pratically?
what is the function of statics switch in ups and tell me parts
1.What is the range of stator resistance of 3-phase induction motor? 2.Two electrically operated vibro motors are foxed in parallel direction in vibrating feeders. what is the direction of both vibro motors?
What are the difference between CT/PT operated Meter and RRAMR Meter for HT/LT application?
which pump used in STP
How much pf maintan in dg set in 6o% load,when Dg runnig Neutaal Earthing removed what happen.
Operation of isolators.
What are the types of power in electrical power?
Briefing the effects of ASR and ACR of a double closed-loop speed regulating system.
Define resonant peak?
What are the uses of stepper motor?
What is rotating magnetic field?Discuss elaborately.
how does grading rings & spacers in transmission line works? Working Principle?
where the lexical paramater will use in fron end?
