technical specification for stator fixation

[Albaro]

Hi people,

i am looking for a technical specification for the fixation between stator and outer casing.
How many torque shall it carry? (for example: for short circuit, blocked rotor or break down)

Thanks,
Albaro

 

[electricpete]

Short circuit would be the limiting case.

The mechanical linkage between stator core and motor frame can also have a dramatic effect on 2*LF vibrations measured on the bearing housings. Many designs are tweaked to minimize the coupling from stator core to stator frame at a frequency of 2*LF

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(2B)+(2B)' ?

 

[ScottyUK]

If this is a motor then the only worse condition would possibly be plugging, if the starter was arranged to allow that mode of operation. If this is a generator then an out-of-phase closure of the main breaker could be the most severe condition although few if any manufacturers brace their machines for anything greater than a three-phase short at the main terminals.


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If we learn from our mistakes I'm getting a great education!

 

[electricpete]

yes, good point. Out-of-phase reclosure by plugging etc is worse than short circuit.

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(2B)+(2B)' ?

 

[Albaro]

Thanks.....
It was a helpful information...