Class of insulation

03/06/2011 by 6 Comments

The main component for electric motor is a stator.What is stator?Basically stators are wound with insulated windings made from cooper wire.The insulation  materials for winding of stator such as polyester, poly vinyl formal,polyurethane etc.

The main purpose of insulation is to protect the windings in the slots of the stator lamination and layer between winding coils.The insulation class is durability factor depend on whole of insulation condition.

According from IEEE regulation,The classification of insulation electric motor have a deference rating for maximum temperature that insulation winding can operate.We can see the insulation class at  motor nameplate.Please refer the table below for insulation class rating temperature. read more

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motor nameplate information #2 – Mechanical input

09/03/2011 by Leave a Comment

Last time i already explain about Electrical input. This time i want explain about mechanical output electric motor such as horse power,RPM ( running per minute),torque and slip.

From this data we can calculate and design a suitable mechanical device for output load such as pump,propeller,compressor,cutting machine,blower and etc.

We also can determine a correct size for motor coupling,diameter of shaft,load pressure and type of material for our machine or equipment design.

I explain detail about mechanical output information normally we can found at electric motor name plate. read more

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