Does RCCB do the job of MCB? Lets take 16A RCCB. it trips when residual current exceeds 30mA. does it trip in an over current situation, i.e when current exceeds 16A ??
2 6949how to calculate voltage drop in long distance cable? for an e.g lamp of 12 volt ac ,300watt is 90 meter away from supply i.e (x'mer 230 v / 12v)and i m getting 8 volts at lamp terminal ....
1 4412In between UPS out going changer over switch and ups raising main input, both side cable gland producing heat but the cable doesn't get heat,Why?
2269One of the advantages of HRC fuse links is that they can be used to back up equipment with an inadequate rupture rating. briefly discuss what this means
1 5832What is meant by the KA-rating of a circuit breaker? In this regard, discuss the stresses experienced by the circuit breakers
3 13998How to connect a Restricted earth fault relay for 2000KVA,11/0.433 KV Distribution Transformer and What is the neutral CT ratio should be selelcted for 2000 MVA Transformer for estabilishing the Restricted earth fault relay
1 4115Post New Electrical Engineering Questions
What is the dependency of stiffness on load angle??
Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.
by what factor the starting current is used when comparing star and delta connection for motor starting?
how does commutator convert a.c to d.c?
Can we use Ccapacitive voltage transformer directly for metering purpose?
What is the problem of internal failure in ship engine telegraph system norcontrol?
What is pd controller?
how to interlock 3 incomer-ACB,1 buscoupler ACB,... pls answer this question and if possible send me the ckt diagram..haifriends2910@gmail.com
Can a generator runs after getting 1st stator earth fault.
Why synchronous motor is used in power factor improvement,dc series in lift
in cvt,there are two windings,1a,1n and 2a,2n.in my one project i use only one winding i.e.1a,1n. the other winding is not in use, so i connect it in open delta and want to close it by ibsertibg thermal resistor. the output of cvt is 132kv/115/sqrt3. plesae tell me exact value of resistor, so i may close it to avoid the resonance phenomenin. send me answer on this email adress please. aetcon-po@aetcon.com
who invented active elements? plz give me the complte details of active elements...
How to address the servo drive for motor
If i am running of spindle at 2000rpm ,but How to spindle stop at the second I am resetting the machine in CNC machines
Why the dc voltage drop during starting of emergency lube oil pump? The Voltage drop from 135kv to 125 kv for one min. before re-establish to 135kv?