Undervoltage protection refers to the action of protecting electrical appliances when the line voltage is reduced to the critical voltage, which is called undervoltage protection, and its task is mainly to prevent the equipment from burning due to overload.Three-phase asynchronous motor manufacturersUndervoltage protection is a protective action designed to protect the motor from overload.
Three-phase asynchronous motorIn some applications, the grid voltage is reduced to the rated voltage60%-80%When, it is necessary to automatically cut off the power supply and stop working, which is the protection action when the line voltage falls to the critical voltage, also known as undervoltage protection.
whenThree-phase AC asynchronous motorWhen the grid voltage is reduced, the speed and torque will be reduced, or even blocked. In this case, when the load is a fixed value, the current of the motor increases, but the increase is not enough to operate the fuse and relay, so it is necessary to take undervoltage protection measures at this time.
Of course, in addition to using the undervoltage protection of the contactor itself,Three-phase AC asynchronous motorA low-voltage circuit breaker or a special electromagnetic voltage relay can also be used to carry out the undervoltage relay coil straddle on the power supply, and its motion and contact are connected in series in the contactor control loop. When the grid voltage is lower than the specified value, the voltage relay operates to release the contactor.
Shengzhou Senli MotorisThree-phase asynchronous motor manufacturers, supplied3KWAnd the following small power motor. Our products from the shell, shaft, rotor, stator are independently produced, the production process is strictly in accordance with the quality system management. Can provideOEM/ODMCustomization, specification customization, appearance customization, special shaft customization and color customization. If you want to know more about this type of motor or are interested in learning about our products, please leave a message online or call us directly0575-8378-1127.