The type of product were composed of four parts .There are the product code, the specifications code, the special circumstances code and supplementary code. They are arranged in the following order: the products code - the specifications code - the special circumstances code - supplementary code.

一、    Product Code: were composed of four components of the order。There are the type of electric motor code, the characteristics code of electric motor, serial number of the design, and the code of exciting magnetic way.

1、The type of code which characterise various types of electric motors are Chinese phonetic alphabet

For example: Asynchronous motor     Y     Synchronous motor   T

           Synchronous generator    TF     Direct current Motor  Z

           Direct current generator   ZF

2、Both the characteristics code characterise and Chinese phonetic alphabet characterise motor performance, structure or use.

3、For example,  The type of prevention bursting       YB

Used on the Axial flow fans                           YT

The type of electromagnetic brake                     YEJ 

Frequency conversion adjust speed motor               YVP

Variable-speed multi-polar                            YD

Used on the Chain block                              YZD etc.

3、Design serial were indicated in Arabic numerals refers to the order of the electric motor design.For the first time the design of the product design does not mark the serial number,.Series of derivative products based on the design of the order mark. For example: Y2   YB2.

4、Exciting way code expressed respectively by letter,S express third harmonic,J express thyristor,X express rehabilitation phase excitation.

二、The specifications code are mainly indicated by the center height、frame length 、Core length and pole.  

1、            Center height is the height from axis to bottom surface for the feet of the frame . Electric motor can be divided into four kinds according to the difference of the center height.There are large, medium, smal and micro.

H, the center height, between 45mm and 71mm belong to micro electric motors.

H between 80mm and 315mm belong to small electric motors.

H between 355mm and 630mm belong to medium electric motors.

H more than 630 belong to large electric motors.

2、The length of the frame in international letters:

S——short frame

M——medium frame

L——long frame

3、The Core length are indicated in Arabic numerals 1,2,3,4,etc respectively from long to short.

4、Poles contains 2 pole、4pole、6pole、8pole etc.

三、The special circumstances code have the provisions as follow:

四、The supplementary code only applies to the electric motor which need  the supplementary requirement.For example,The meaning of the code for the  type of electric motor is YB2-132S-4  H as follow:

Y is the type of the product.It means asynchronous motor.

B is characteristics code of the product.It means type of prevention bursting.

2 is the code of the product design.It means the second design.

132 is the center of the motor.It means the distance from the axis  to the ground is 132 mm.

S is the length of the motor. It means the short frame of the electric motor

4 means 4 pole motor.  

H is the code of  special circumstances.It means marine motor.