Dear sir,We have a 7.5hp motor,it was running smoothly and
suddenly one winding is carring more current then
others(r=6.5,y=6.3,b=10)..whts wrong with tis...?
Answers were Sorted based on User's Feedback
Answer / jvino03
One of the Phase Insulation was Weak. We easily identify
through Insulation Tester or Megger, Its value is entirely
different from other two windings, else we can find the weak
coil by checking its coil ohmic values....
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / kingniki
We can check by continunity on winding from multimeter and that time it shows that motor becomes unbalanced
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / g. ramesh
one cole insulation faild. while motor running insulation
failed due to motor prodce low temprature. when motor comes
to stop then col is normall resistens
so this cause motor to be rewinding
| Is This Answer Correct ? | 1 Yes | 3 No |
Answer / prasanna kumar
when one of the incoming fse was burnt so that the motor
runs on two phase.so that one phase will draw more current
and the motor gets heated.
| Is This Answer Correct ? | 0 Yes | 2 No |
What is Working principle of electronic choke?
Define non-touching loop.
Why is tan-delta test and capacitor measurement done on alternator?
wchich motor we are using in mixer?
Why Generator KVA not in KW ?
3 Answers Bygging India, HHH, Tata Motors, TVS,
What is meant by Creepage Distance in Insulators?
CFL lamp is what type of load?
pf of synchronius motor is unity, is it axact(=one) value. ?
with out colour codeing on conductor how can be find what is r,what is b,what is y phases.....
WHAT IS FAULT CAPACITY OF HT MOTOR TERMINAL BLOCK? ANY BODY HAVE ANSWER PLZ....POST IT.
hot water tank,top element 240v across,the bottom 120v across,why?
how to arrange the generator protection ansi 48 (loss of phase?)
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
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)