motor test running time

[a.bisnath]

If a motor is removed from warehouse storage and is to be bench test run before installation in the field what would the the correct test run time for a 480 volt motor and a 4160 volt motor.(of course, amperage ,surface temp and vibration will also be taken)?

 

[petersonra]

A test of an unloaded motor does not mean much IMO.

Short of having a dyno available, about all you can do is fire it up and see that it turns at the right speed.

I'd be inclined toward a megger/IR test as well, but beyond that w/o a dyno or some other load to run, there is not much else you can do.

 

[markstg]

If a motor is removed from warehouse storage and is to be bench test run before installation in the field what would the the correct test run time for a 480 volt motor and a 4160 volt motor.(of course, amperage ,surface temp and vibration will also be taken)?

We run our motors unloaded (decoupled) for 15 minutes min, 30 min max.

 

[petersonra]

You might consider checking run out to make sure the bearings are OK.

 

[a.bisnath]

established time frame

established time frame

Is there no established or reccommended time frame? to ensure rise in temperature and temperature stabilisation current,vibration profile to give a basic acceptance before sending the motor to the field for use.Is it that we just test and send it out .I like the idea about checking the bearing run out.

 

[petersonra]

Is there no established or reccommended time frame? to ensure rise in temperature and temperature stabilisation current,vibration profile to give a basic acceptance before sending the motor to the field for use.Is it that we just test and send it out .I like the idea about checking the bearing run out.

my guess would be that most people don't bother to test the motor in the first place. the manufacturer or re-builder tested it already.