Can the yzr motor rotor be used after short circuiting? What will happen to the short circuit?
2021-10-11 09:00
Under normal circumstances, the main function of a small motor made into a wound motor is to adjust the speed, and the main function of a large motor into a wound motor is to reduce the starting current of the motor while maintaining the torque; the rotor of the yzr motor is short. There will be a relative reaction when connecting the motor. Generally, it is not recommended to use the yzr short-circuit rotor.
Can Sealocean yzr motor rotor short circuit be used?
1. Can the yzr motor rotor be used after short circuiting?
(1) The YZR wound rotor can also be short-circuited to start, but the short-circuit of the yzr motor generally needs to be used under no-load or light-load conditions;
(2) After the YZR winding motor short-circuits the rotor, its starting torque will become smaller, and the motor may burn out during long-term operation.
(3) Although the yzr winding motor can be started directly after being short-circuited, it is generally not recommended to do so.
2. The situation of short circuit of Sealocean yzr motor rotor
(1) Generally speaking, the rotor windings of the motor are short-circuited when the YZR wound motor is in normal operation;
(2) When the Sealocean YZR winding motor starts or adjusts the speed, a resistor is connected in series, and the motor cannot work normally when it is in an open circuit state;
(3) Sealocean yzr motor is a winding type motor, and the winding type motor generally adopts the method of external short circuit after starting;
(4) The short-circuit of the motor rotor is generally used in conventional occasions, and the rotor winding can be short-circuited after the motor is started.
What happens when the rotor of Sealocean yzr motor is short-circuited
1. When the Sealocean yzr line motor starts, the resistance can be connected to increase the power factor in the rotor circuit and increase its starting torque. The starting resistance can be removed when the motor starts normally.
2. After the Sealocean yzr winding motor is short-circuited, the starting current inside the motor will increase, and the high-power motor may trip. If the trip is caused, it will cause a great impact on the transformer and the power grid;
3. After the Sealocean yzr winding motor is short-circuited, its rotor coil is similar to cast aluminum squirrel cage bars, which is similar to an ordinary motor;
4. In theory, after the rotor of the yzr wound motor is short-circuited, the rated torque of the motor will not change under the power frequency condition of the motor, but the starting torque of the motor will be greatly reduced, so the starting current of the motor will increase;
What kind of motor is yzr? yzr is a wound motor. When the yzr wound motor with shorted rotor starts directly, its starting current will be very large, and the high-power YZR wound rotor motor may trip after being short-circuited. . The output power of the motor is rated power, and if the rotor coil is connected in series with resistance, the output power of the motor will be reduced. Therefore, the short circuit of the yzr motor rotor is suitable for some situations, but it is not suitable for long-term operation.
Sincerely , Emma
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Group of Companies Sealocean (China)
Directorate of regional sales in the CIS
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