why contactor not provided between output of VFD and motor?
Answer Posted / jayaseelan
This will cause unnecessary wear on the contactor and
there will always be a slight delay while the inverter
initialises.ie.if contactor placed in between vfd and motor
response time of contactor gettting on is slow compare to
vfd response speed so return current wii affect the
electronic bords.thats y contactors not not used in output
of vfd.
| Is This Answer Correct ? | 6 Yes | 6 No |
Post New Answer View All Answers
How line capacitance & line inductance varies with increase in height tower.
why do we have spikes enough to burn electronic boards, when generators are not grounded
if we give 60 hz single phase supply to the transformer used in europe , than what will happen
1.main parts of generator? what is used A-check,B-check,C- check? 2.what is FM200 system in data centers? 3.difference between pac,ahu?
what happened when we supply a dc current in dc motor?? can it worked properly?
100 MVA 3-phase alternator with earthed neutral has a reactance of 5 ohms per phase. what will be the fault MVA of generator.
what the function breaker failure scheme, how is it operated
What is the Designing & Selection Procedure for a DG/Transormer of rated capacity?
how u measure/calculate renge of capacitor,capacitor has no any rating tag.what is the theory of measure of capacitons.
Tell me about ur past electrical maintanence job
What is the difference between a verilog task and verilog function?
5- What is the task (function) of the excitation and isolation transformers in power plant? 6- What is the task (function) of LCI (A), LCI (B) and LCI (COS) in power plant? : LCI (A) and LCI(B) are load commutating inverter for generator turbine starting. , LCI (COS) is load commutating inverter change over switch
What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?
Whether it is possible to measure energy at the input of rectifier transformer (12 pulse with very high odd harmonics)
how to select electronic timer(Star-Delta) setting for diff. rating motors