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The structure and working principle of three-phase asynchronous motor
Release time:
2022-08-25
1. model
is used to indicate the series, geometric dimensions and number of poles of the motor
for example: y132M-4
Y = three-phase asynchronous motor
132 = frame center height (mm)
M = frame length code
4 = number of magnetic poles (pole number p = 2)
2. connection (stator three-phase winding connection method)
1. motor capacity ≤ 3kW-Y connection
2. motor capacity ≥ 4kW- 
Connection
3. Voltage
The line voltage value that should be applied to the stator winding of the motor during rated operation.
For example: 380/220V,Y/ 
refers to Y connection when the line voltage is 380V; When the line voltage is 220V, 
connection
is used to explain: generally, the operating voltage of the motor cannot be higher or lower than 5% of the rated value. Because when the motor is running at full load or close to full load, the voltage is too high or too low will cause the motor current to be greater than the rated value, thereby causing the motor to overheat. The rated voltage of three-phase asynchronous motor is 380V,3000V, and 6000V.
4. current
motor stator winding wire current value at rated operation.
For example: Y/ 
6.73 / 11.64A indicates that the line current of the motor under star connection is 6.73A; The line current under triangle connection is 11.64A.
5. power
rated power refers to the mechanical power output by the motor on the shaft during rated operation.
6. asynchronous motor product name code
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Comparison of different measurement methods
2022-08-16
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