Hot summer, the motor running problems should be paid attention to

In the operation of the motor in the hot summer work should pay attention to the following: 1, monitoring the power supply voltage change in voltage should not be more than or less than 10% of the rated voltage range, if lower than this range, should be appropriately reduced load operation. At the same time, the three-phase voltage imbalance also cannot too much. The difference of any two phase voltage should not exceed 5%, otherwise will make motor fever too fast. Motor power are best a voltmeter and switch directly to monitor. 2, monitors the running motor current Under normal circumstances operation shall not exceed the nameplate rating. Also should pay attention to whether the three phase current balance and any two interphase current difference should not be more than 10% of the rated current, otherwise the motor has a fault. Particular attention to whether there is a lack of phase operation. Shall furnish ammeter monitoring of large capacity motor running current, capacity should also be smaller motor line current is measured with a clip-on ammeter at any time. 3, monitoring the temperature of the motor The temperature rise shall not exceed allow the limits of the motor nameplate. In operation of the motor temperature rise is monitoring the motor running condition of direct and reliable way. 

Check the temperature rise method can refer to the 144 q. Online road furnish voltmeter, ammeter, and overload protection device, also is Motor vehicle the main way to monitor the temperature rise. 4, monitor the motor running in induction motor price the noise, vibration and smell when the motor running, voice even, smooth operation, insulating paint smell and the smell. In case of abnormal noise, vibration, insulating paint smell, etc., that motor overheating or other failures. 5, surveillance gear work To watch if there's any loose for pulley or coupling, transmission belt with and without sliding phenomenon (sliding belt is too loose), belt joint are in good condition. 6, monitor the condition of the bearing Pay attention to the bearing noise and fever. When using a thermometer to measure, rolling bearing heating temperature not over 95 ℃, sliding bearing heating temperature not over 80 ℃. Bearing abnormal sound or overheating, is poor lubrication bearing, wear and tear caused by severe. 7, monitor the condition of the fuse Should always pay attention to whether there is a photograph of blown fuse, lest cause lack of phase operation make the motor overheating. In a word, the motor in the process of running, monitoring the current, the change of temperature, found problems in a timely manner.