iec standard

[place1234]

Does anyone knows the iec standard number that defines frame designation, cooling method for polyphase motor? Thanks.

 

[Kiribanda]

Hi place1234,

Please refer the followings.

1) IEC 60034-6 for Method of Cooling (So called IC Code).

2) IEC 60072-1 and 2 for Frame sizes from 56-1000.

Hope this will be helpful!

Good luck!

Kiribanda

 

[place1234]

Thanks!
Does that mean IEC not like NEMA (INCLUDING FRAME designation/enclosure, etc in one stardard)? IEC seperate all the standards?

 

[UKpete]

place1234, yes that's right. Most of the motor standards are under the IEC 60034 series, but they are all separate documents, purchased and revised separately. Not as convenient as NEMA MG1 I agree, but that's just the way it has evolved.

 

[aolalde]

UKpete that information is interesting. Do you know if it is a source to consult those standards without having to buy so many documents?

 

[UKpete]

aolalde, no I don't. What has happened in companies I have worked for here in the UK is that they are paid-up members of either the British Standards Institute or some other company or institution (such as a University library), in which case they are provided by mail or download.

I never found it very convenient, you ended up with a mixed bag of different parts of the standards relevant only to the job you were on. As you can imagine there is also a lot of cross-referencing, so you sometimes bought a standard only to find it quoting another one which you then have to obtain.