overheating motors

MatthewC · Nov 9, 2012

Can a motor overheat and short to earth if it is having to work to hard?There is no overload but the motor is protected by thermistors and a thermistor relay which cuts out on occasions. Its an intermittent fault but the Engineers that have watched the circuit say it trips the Main C/B. On a quick inspection today each winding to earth was >200Mohm so no fault there.

Knobhead · Nov 10, 2012

OK the answer to the question asked is YES!
Now that's even less helpful.
If you read the OP, he's not dealing with the motor.
If he wants to prevent a burn out thats a different matter. What would you recomend?

Spoon · Nov 10, 2012

Hi Matthew. As E54 said in post 2, we need more info, like type, size of motor, what it's operation, what enviroment is it working in. (eg dusty) The more info you can give us the more we can help.

clematis432 · Nov 10, 2012

Tony said:
OK the answer to the question asked is YES!
Now that's even less helpful.
If you read the OP, he's not dealing with the motor.
If he wants to prevent a burn out thats a different matter. What would you recomend?

If you take time to check, I,ve already "recommended" and with a lot more courtesy than you. Why do you think the OP has not returned ? Maybe due to your attitude/smartness ? I would prefer you not to reply back, I won,t to you, your attitude sucks.

Engineer54 · Nov 10, 2012

No-one can give the OP a probable answer to his query, as he didn't give anywhere near the relevant information needed to do so!! He had disappeared even before i asked for further information in post #2 and hasn't bothered to to come back since!!

If there is anyone here that could have given the OP sound directions on his query, it would be TONY. But i know that he won't give out advise to those that disappear and don't come back with information that's been asked for/requested. Far too many OP's do this on the forum, ask a question with hardly any information, get many replies, all based on assumptions, rarely getting any answers and hardly ever get any feedback from these OP's....

On a final note, save but a few here, Tony has probably forgotten more, of what most know here about motors and the control of motors...

clematis432 · Nov 10, 2012

Engineer54 said:
No-one can give the OP a probable answer to his query, as he didn't give anywhere near the relevant information needed to do so!! He had disappeared even before i asked for further information in post #2 and hasn't bothered to to come back since!!

If there is anyone here that could have given the OP sound directions on his query, it would be TONY. But i know that he won't give out advise to those that disappear and don't come back with information that's been asked for/requested. Far too many OP's do this on the forum, ask a question with hardly any information, get many replies, all based on assumptions, rarely getting any answers and hardly ever get any feedback from these OP's....

On a final note, save but a few here, Tony has probably forgotten more, of what most know here about motors and the control of motors...

I appreciate Tony has"forgotten more than most of us know about motors and control gear" but hey ! give a new member a break and a bit of encouragement !
There,s a way of answering a post, even if the OP was not very clear. Not difficult really.

Engineer54 · Nov 11, 2012

clematis432 said:
I appreciate Tony has"forgotten more than most of us know about motors and control gear" but hey ! give a new member a break and a bit of encouragement !
There,s a way of answering a post, even if the OP was not very clear. Not difficult really.

As i stated the OP hasn't come back, and Tony like many of us get a bit peeved with trying to make assumptions that might or might not help!!... It works both ways, the OP, be they new or not should have the courtesy to stick around and reply to those that are trying to help, rather than posting and disappearing a few minutes later!!!