i have 2 motor of same rating. on no load condition one
motor take 1.6A but other motor is taking 4.8A. what is the
reason of this. please explain with proof.
Answers were Sorted based on User's Feedback
Answer / b.b. singh
one motor has connected in star then it taking 1.6A &
another is connected in delta so it taking 4.8A.
| Is This Answer Correct ? | 16 Yes | 1 No |
In case of 3 phase motors,
the motor takes higher current might have incorrect winding ratio which may cause unbalancing of 3 phase current.
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / ashok sharma
OK. It is right that in star motor taking 1.6A & in delta
motor is taking 4.8A. but Please prove this with example.
Suppose both motors are new .
| Is This Answer Correct ? | 0 Yes | 2 No |
Answer / sivakumar
FIST U WILL CHEK THE HP RATHIG THEN NEXT CHEKED AMPS
| Is This Answer Correct ? | 0 Yes | 2 No |
Answer / loboreliance2003
The motor drawing 1.6A on no load appears to be okay.The
motor drawing 4.8A on no load appears to have a fault. the
winding may be having not proper megger value. Or even
rewinding of this motor may have been done improperly. You
will not find this condition in new motors from original
manufacturer.
| Is This Answer Correct ? | 2 Yes | 5 No |
Answer / sakthivel
first you are check the bearing and terminal board and all
so check starter conduct knob and verify the electrical
parameter and all check pump and so impellerside
| Is This Answer Correct ? | 0 Yes | 3 No |
what should we do when the CT secodary gets open? how do we short circuit it? using tester or screw driver? not dangerous?
Generally transformers has delta primary and star secondary. But in some transformer i saw Star primary and delta secondary. what is the reason for chosing like this?
What is the meaning of key single line diagram?
what are the main parts of UPS what is the function of that?
23 Answers Apollo, HCL, Liebert, Royal Furnishers, Tech Mahindra,
Between Turbo alternator and Hydro alternator which one is more difficult to cool and why?
What is the difference b/w Earthing and Grounding?
Why water bubbles when D.C. Current is passed through it? Why not when A.C. Current is passed?
Define end float in a motor?
would you please give me any idea about the BARC interview question on electrical? i have an interview on 1st july.....plz hlp me.......its urgent......
the site measured knee point voltage of protection class CTs should be greater than rated knee point voltage? what about meetering class CTs. Should it be below the rated knee point voltage?
I have 30 kw motor load & i have selected 10 kvar capacitor bank for power factor improvement.my existing p.f is 0.85 & proposed p.f is 0.99 so ,is it right selection? 2 nd question how to connect c.bank whether in delta or star connection & how to decide it?
during installation time of transformer and alternator which points we have to observed?
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)