Interested to Buy Any Domain ? << Click Here >> for more details...
11KW Delta motor is taking about 44Amps in star and goes
upto 70Amps in delta and trips OFF. The rated current is
26Amps. Application is for the blower. The motor takes ( no
load without coupling impller ) only 2.5A and 5Amps in star
& delta starter test.Need to know why its taking high
current.
- 10 Answers
- 19934 Views
- Pfizer, I also Faced
- E-Mail Answers
Answer Posted / tj
Following is the check seq. :
1 Check for correct DOR/Phase Seq, ensure termination is
correct n tight.
2 Check the relay for malfunction & its type if it is
thermal then increase setting a bit more than ratd amps &
chk, n if its micro proc based then adjust the setting
acording to motor starting curve.
3 Ensure that suction damper is at min. before starting.
4 Ensure the motor is correct according to fan torque.
5 Check for any abnormal sound or play from fan side.
6 Also check the cable, it should not be underrated, causing
higher potential drop at startup.
Hope the above helps you........
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Alternator rotor earth fault relay circuit
Why does the speed regulating system adopting I controller have no steady-state error? In this single closed-loop speed regulating system, when the input of the I controller Un=0, what is the output voltage of the regulator? What factors do the output voltage depend on?
how to increase senstivity of ct
State uses of different types of stsrters with different capacities of motors as below: a. up to 5HP b. above 5hp to 10hp c. above 10hp to 20hp d. above 20hp
How can we findout the maximum efficiancy of Transformer? At which load?
What is the principal of motor?
what is meant by neutral compensation factor and where it is used
Discribe type of fault in DOL and stardelta startor.
I have one ct of ratio 3000-2000/1 Amp its knee point voltage mentioned on name plate is 500-333/30mA-50mA at Vk/2. in secondary box there is three terminal named 1S1, 1S2, 1S3 then on which terminal obtained the knee point voltage ie 1S1-1S2 OR 1S1-1S3 & also specify the knee point voltage for the ratio 3000 from name plate.
is it possible to say motor horsepower number without seeing name plate(when name plate damaged)
what is power factor ? how we can calculate the low power factor and amount of capacitor for improve that low factor ?
critically criticize the application of ring main unit in power system
what is the diference between the 4pole & 6pole DC Motors & what is advantage 6pole over the 4pole ?
On what cycle does thermal power plant operate?
What are the types of instrument transformer?
