We have .ht motor which is 60Hz.we run on 50Hz.so that it's speed reduce

We have .ht motor which is 60Hz.we run on 50Hz.so that it's speed reduce
but we had one prob.that motor winding temp increase up to 135 deg.we
want reduce this temp.what to do?we arrange ext.cooling fan but not much
effect.we want reduce this temp. Inhouse without affecting much.cost. also
don't want reWINDING OF MOTOR?

Question Posted / tushar shah

3 Answers
5102 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

We have .ht motor which is 60Hz.we run on 50Hz.so that it's speed reduce but we had one prob...

Answer / k.prakashchandra

You may have to reduce the load more till you get the
desired temp rise

Is This Answer Correct ?

1 Yes

0 No

We have .ht motor which is 60Hz.we run on 50Hz.so that it's speed reduce but we had one prob...

Answer / k.prakashchandra

As you have reduced the speed ,the cooling effect of the
shaft mounted cooling fan is also reduced .Either you have
to reduce the load by about 10% or replace cooling fan .

Is This Answer Correct ?

0 Yes

0 No

We have .ht motor which is 60Hz.we run on 50Hz.so that it's speed reduce but we had one prob...

Answer / r c thakur

You have to increase the surface area of the motor,the
radiator fins can be introduced,

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

Why in medium voltage system(3.3kv to 33kv, neutral is earthed with either resistance, reactance or neutral grounding resistance?

4 Answers Essar,

How do you select a cable size(Cu&Al) for a particular load

10 Answers Adhunik, BPCL Bharat Petroleum, Hiecon, TATA,

Formula to calculate amps rating when we are having only the width & thickness of the coppper ?

2 Answers BEL,

how to select the automotive wire size by mathematical calculation. for xenon headlamp with ballast. the ballast given data voltage 10-17v,current permenant 6amp, run up phase is 15amp, peak at swicth on max 400micro sec is 40amp.the sum of cable resistance is 150mohm.please provide referenc document if any for relating the peak at switch on current,time & wire wire size

1 Answers Tyco,

Why current flows in nutral? As per theory there should be no current in 3 ph explain.

11 Answers Bhel,

In a d.c current, the power is the product of voltage and current. This relationship does not always apply to effective(r.m.s) values in an a.c circuit. Explain the reason for this.

2 Answers

can we use the step down transformer to step up transformer

6 Answers

Is there any problem ,if R-Y-B voltage is constant , but the air compressor taking one phase high current.what is possible causes.the said compressor is very new.(55kw).

4 Answers

how tto ingress mw in turbine explain.procedure ?

1 Answers Power Grid,

is a normal conductor can be used a core in windings if not what is the winding core speciality.

2 Answers

Which power will flow first if we switch on a motor? Active or Reactive? How?

5 Answers NPTC,

Is there any specialised book to refer about fault level calculation both in MV and LV side??

1 Answers

For more Electrical Engineering Interview Questions Click Here