At site, we have 30Kw motor (3 phase, 400V,50Hz) and FLC
54A as per the nameplate. At the time of starting it draws
840A instead of 390A (7.2%). As per the data sheet also its
390A starting current. it thru a dol starter from the MCC.
can anyone tell what is the problem in the motor

Answer Posted / atul pradhan

pl. check motors connection in terminal box if it is
connected in star then current may increased.

Is This Answer Correct ?    5 Yes 13 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is the difference between b c d curves on mcb

1340


Why an ac solenoid valve attract the plunger even though we interchanges the terminal? Will the poles changes?

674


what's prime importance of protection in electrical system.if protection system don't work properly what can happen in electrical system?

1433


why genarator genarating voltage 11 KV?

1314


how to size H.T & L.T Panel ?

1639






A system absorbs 100 k J of heat and the increase in its internal energy is 100 kJ; the work done is

765


Q.1:What protection will be used on HT and LT side of 33/0.4 KV, MVA transformer. Indicate capacities of protective device to be used. Q.2:Which types of back-up protections are used in the power transformers? What do you understand by the term over travel in the relay? Q.3:How star and delta connected winding transformer are provided from earth fault

1697


what is smart grid? why we use it? explain in detals bcoz i want give presentatin from it....

1484


What are the main advantages of bode plot?

693


how to calculate kvar in Akiva

1469


What is the minimum distance to be maintained in between HT panel and LT panel and Instrument panel as per IEC and NEC standards?

1238


What do you mean by an instrument transformer?

650


Does all the output contacts (N/O as well as N/C) of a Numerical relay operate when relay receives a binary input/inputs or contacts are designated to specific logic input/inputs and only these contacts operate?

1613


WHY MOSTLY Rph IS USED FOR CONTROL CIRCUITS AUX. SUPPLY ?

2047


Can we use shunt trip coil instead of trip coil with protection relay for protection?

1306