On the cause of the chiller compressor burning down

On the cause of the chiller compressor burning down During the use of the chiller, sometimes the irresistible external force or misoperation will cause the compressor to burn out. Once the compressor is found to be burned, it must be stopped immediately to avoid damage to other parts. ▲The reasons for the burning of the chiller compressor are as follows: 1. One of the reasons is that the refrigeration compressors, especially Copeland compressors, are burnt out after long-term use due to lack of phase. There is corresponding protection, but the line on the compressor head fell off and the burner happened. This is not the first time that such a thing has happened. The Copeland Compressor Business Unit concluded that such a thing 2. 3. Voltage type open-phase protection is to detect the three-phase power supply voltage. If one phase is missing, the connection with the load will be disconnected. The current type is to detect the three-phase current. It will cut off the connection between the power supply and the load. The voltage-type open-phase protector cannot start when the phase is missing, and directly protects the load. When the current type is missing phase, as long as the missing phase is not the load control power supply, it can be started, but immediately Detect phase loss and power off. In the selection, the voltage type is generally selected. When the motor may be dragged by other objects, because the motor is dragged like a generator with a voltage back-feeding phenomenon, it is not sensitive to some voltages. Type protection may not work, so use current type To sum up, when we carry out power distribution construction for the equipment, especially the section of the line leading from the host power control box to the equipment, we must be careful when laying, and we must carefully check and test, because this is the phase protection In a blind zone, it is too late when the thermal element of overcurrent protection detects the signal of overheating, and the electrical equipment will be burned out in a short period of time when the phase is missing.