First, the 380V three-phase AC motor lacks a phase during the start-up process. Generally speaking in textbooks, it is said that it cannot be turned, and the motor will only buzz. Then, can a three-phase motor turn when one phase is missing? Friends who want to know follow Dalan Motor to take a look. In fact, in actual work, it is found that as long as the motor is not too large, and it is still lightly loaded or no-load, individual motors can be rotated in the absence of phase. It's just that the speed is slightly lower and the current is large. However, most motors can't rotate when one phase is missing. If two phases are missing during the starting process, the motor will not be able to rotate under any circumstances. There is also a phase loss during operation. If a three-phase AC 380V motor is suddenly missing a phase during operation. The motor generally does not stop. Unless it is a particularly heavy load. At this time, the current of the motor will be too large, and the vibration will be relatively large. And accompanied by abnormal sounds. The current is also relatively large. It is worth mentioning that it is very dangerous for a three-phase 380V motor to operate without one phase. If the motor is not stopped in time, it is easy to burn the motor. A small motor lacks phase when it starts, and if there is no load, it will spin unevenly and at the same time generate heat. If it is not stopped in time, it will burn out in a short time. If it is started with a load, it will not spin and will also burn out. The larger motor will start with a lack of phase and will buzz and scream, so you have to stop as soon as possible, otherwise it will burn immediately. If the motor lacks phase during operation, the motor will also make an abnormal sound, and the motor will continue to run due to inertia. If it is not stopped immediately, the motor windings will be burned out. In order to keep the motor running, it must flow in at this time. More current is needed to generate enough torque, so if the current is large, the motor will be overloaded when the load is large, and the motor will be burned over time. ï¼ï¼ï¼ï¼- Editor in charge: Dalan Oil Pump Motor 02-Procurement Consultant Copyright http://(Dalan Electric) Reprinted please indicate the source We've been around for over 16+ years. We make sure our sound is The Best Sound. Customized Headphones, personalized gifts, promotional products custom , Bluetooth Earphones,Best Headphones TOPNOTCH INTERNATIONAL GROUP LIMITED , https://www.micbluetooth.com
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