what is the difference between Ith & Iu rating in MCCB. Particularly on SACE ABB Circuit Breaker?
2 16258I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?
1765What is the difference between sensitive earth fault and restricted earth fault in power transformers?
4 50367what is the reason for drop in freq. from 50 hz at generating side to 49.8 ,49.6 etc.at receiving side???
2 3678how the rotating magnetic fieldis produced in induction machines??? give the correct explanation.is there any mathematical expression for the same?
1 2341If DC supply is given to a transformer it may a) Work b)Not Work c)Give lower voltage than the rated voltage on secondary side. d)burn the winding
12 13148Post New Electrical Engineering Questions
Please nybody say, weather the result of Bharat Oman is declared or not? Probable date of declare???????
why the pf of semiconductor device is improved the electrical devices
hi all i like to know vat is power plot in control systems also i want to know abt latest trends in electrical & electronics
When will you multiply and devide with derating factors to the actual value while sizing the cable?
Power factor =1.000 at factory in supply. However, PF = 0.8 at motor end. Current = 100 Amp, Voltage = 400 V. What is the power distribution loss? Can I reduce it by adding capacitor at the load feeder?
how we can come to know that motor winding resistance which showing by DMM is right or wrong???is there any chart or something that we will compare & check???
how choose conductor&depending upon load
What is meant by harmonic distortion?
as a electrical student why should i hire you?
What is the type of earth fault protection used in battery? explain.
Why increase in current leads to increase in conductor temperature?
Differentiate between digital phase converter and ordinary phase converter.
we can run 2phase as 3phase .what will be the differnce with respect to phase angle, power, current between the two modes
Can anyone tell me some hints about what type of questions are asked by the interviewer by an Electronics engineer when company is installing an IPP and wants a team of engineers?
What are the essential characteristics of signal flow graphs?
