I have a shop heater with a 1/3 hp capacitor start, induction motor driving the

I have a shop heater with a 1/3 hp capacitor start,
induction motor driving the fan. Intermittently, the fan
motor speeds up significantly for several seconds (15-60
sec) then slows to normal operating speed. The manufacturer
suggested changing the capacitor which made no sense, but I
did it to no avail.
Could this possibly be caused by the centrifugal switch
intermittently reconnecting the start winding?

Question Posted / pd

1 Answers
3693 Views
I also Faced
E-Mail Answers

I have a shop heater with a 1/3 hp capacitor start, induction motor driving the fan. Intermittentl..

Answer / pillay

Just a possibility.How big is the heater May be when the
heater is "on" the voltage drops so the fan is actually slow
but when the heater cuts out due to thermostat the voltage is
near normal and the motor is functioning at normal speed.

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

Hi, I'm going to attend BHEL interview for exexutive trainee (ET ) on 22nd DEC . Till now if anyone attended the interview pls help me out regarding the interview. I'm an electrical engineer

3 Answers Bhel,

What type of protective system we uses in L.V. distribution panels?

6 Answers

What is ht lt switchgear.

3 Answers Bhel, HBL Power Systems,

what is real , reactive and apparani power

1 Answers

what is interpose vt where it is used and y it is used?

0 Answers

DEAR ALL I have motors ( 10 units )each one is 90kw 380V 50 HZ 1000rpm but new local pwer is 220v 60 hz requierd rpm should be 1000 pleas what the beast solution is used frequncy converter or rewinding all motos or chang all motors thanks

6 Answers GE,

what will happen if ac power supply is given to the rotor of an alternator

1 Answers Goldman Sachs,

what is conductor copnstant of ab cable

0 Answers

The efficiency figures for energy efficient motors (in comparison with standard efficiency motor) can be generally higher by____%.

1 Answers

what is the ranje of HT cabel and LT Cabel.

1 Answers Sail,

how to check the stabilty test for generator differential protection

1 Answers

in 3-phase transformer which type of transformet is used in output side?

6 Answers Essar,

For more Electrical Engineering Interview Questions Click Here