for which possible reasons a motor can fail to start??
Answers were Sorted based on User's Feedback
Answer / sathiyakeerthi
The power is not there
check the I/P & O/P wire
Check the Starter
| Is This Answer Correct ? | 6 Yes | 1 No |
Answer / sheleph
we need to check below things if motor not getting started
whether any fault is coming when we start the motor
If not then check
Check voltage healthiness
each stop(LCS,DCS,ECS)should be released
Check wheather any of the BIs of Relay not working
Check interlock as per drawing
if still not happening then check respective contactor or
breaker
| Is This Answer Correct ? | 5 Yes | 0 No |
Answer / praveen
when both the field flux and armature flux are opposite then resultant electromagnetic torque going to zero this results such that it does get necessary driving force
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / makwana girish
Starter conection wrong first check afteer motor start.
By Company(L&T)
| Is This Answer Correct ? | 0 Yes | 0 No |
One of our gas turbine generator unit "1st stage rotor ground fault" alarm was occured several times. we tried to measure some voltage vulue ground fault protection relay (UNS3020a made by ABB and we measured the value of: Ground: 0.9VDC 5V: 5.8VDC 24V: 23VDC u+: 300 – 350mVAC Rf1: 17.5mVAC Rf2: 17.6mVAC The unit still running and the alarm was reset. As of 6pm yesterday and unitl now no alarm happened again. I our protection relay was defective?
figure of phasor diagram of transformer when full load or no load ?
what are the maximum available current, voltage ratings and switching speeds of the power electronic devices thyristor, power mosfet, igbt, and mct?
Why infinite busbar has zero resistance and high mechanical inertia?
transmisancy eficencey calculation formula
Can we calculate the P.F if we know the only load on alternator .
The transformer which is smallest in size is and how to calculate that? The options are 100 KVA, 50 Hz 100 KVa, 100 Hz 100 KVA, 25 Hz 50KVA, 25 HZ
4 Answers Ranbaxy, Zee Laboratories,
what is the RESTART INHIBIT protection?
what is mean by PIR in circuitbreaker and give me detail of that?
What is bandpass of a transformer?
I have motor of 3 H.P. How i found the rating of capacitor use in it in single phase motor..???
What is battery Limit ?
Civil Engineering (5086)
Mechanical Engineering (4453)
Electrical Engineering (16638)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)