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Classes of motors

Thread Starter: Nishant007   Started: 6/25/2012 11:52 AM   Replies: 5

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  6/25/2012, 11:52 AM
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Hie
What exactly the classes of motors are?
How the classes of motors is defined?

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  6/26/2012, 2:56 PM
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Hello,

what do you mean with classes ? Please define it more clearer.

Best regards
TechTeam
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  6/28/2012, 8:00 AM
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Dear Nishant,

The classes of motor refers to the classification based on insulation and temperature rise limit of the motor.

Please refer the attached informative pages on your topic.

Regards,
Ajay Gupta

Attachment: AG05 (Temperature Rise).pdf  (24 Downloads)

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  7/12/2012, 7:54 AM
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Dear Sir,

 I want to know how you define classes of motors like(class 5, class 10, class 15, class 20)?????
based on these classes  we define triping in numerical relays.
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  7/18/2012, 2:24 PM
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Hello,

I'm not sure if I understand but we have motor side no classes like 5, 10... like for the relays. We have classes for the temperature rise limit like Ajay Gupta has said. But other classes ?

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TechTeam
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  7/20/2012, 1:32 PM
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Nishant007 wrote:
Dear Sir,

 I want to know how you define classes of motors like(class 5, class 10, class 15, class 20)?????
based on these classes  we define triping in numerical relays.


Hello,
Basically motors are manufactured on basis of power rating, RPM, duty cycle, insulation class, type of mounting, etc. Relays i.e. protection relays are selected upon the class or type of protection desiered, e.g. class 5, class 10 etc. So the general purpose manufactured motor may have class 5 or class 10 protection relay selected by the end user depedening upon the application & protection desiered by end user.

Tell me and I will forget. Show me and I will remember. Involve me and I will understand. -Confucius
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