What is the criteria in selecting Air circuit breaker(ACB) &
Moulded case circuit breaker(MCCB) for a particular range?
Answer Posted / shailender gupta
Ans is right but required
calculation.is
p= root(3) VI COS phi.
find out current i.e I after
putting the value of V , p cosphi
and you will get required
current and multiply with 1.75
acc. to IEC fir safty purpose for
equipment
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
what is W.T?specify the acceptable range?
How to find ampere on ht side for selection of cable size ???
How can maintain our H.T. motors used in cement plant. please send me procedure.
how to setting Load amps tripping time and extra settings for load Transformer protection relay with RMU panel using C&S model relay..?
What is meant by coupling capacitor?
PLS MENTION QUESTIONS ASKED IN IOCL INTERVIEW FOR ELECTRICAL EGG??
How to findout raw or ups power? its not indicated in socket,
I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?
how to calculate the settings for shaft ct protn in hydro generators
What is the difference between Delta & Wye windings?
How we calculate DC inducation moter Amp? Sir pls give me formula......
why current flow to the opposite direction of flow of electrons???????????
Why L.T.Cable voltage rating is 1.1kV,where as system voltage is 0.415kV?
what is distribution board?
Why did lightening arrestor solid copper rod head is sharp on mobile tower top?