Allows full pressure start or lower voltage starting, but it should be noted that the current current of 5-7 times the current at the full pressure start is proportional to the square of the voltage.Essence(When the power is greater than 11kW, the starting start should be used).The number of people at no less than two people during the test ride is controlled by one person. One person observes the operation and found that the abnormal phenomenon is immediately shut down to check; first check whether the rotation direction is correct; in the process, check whether each operating current is balanced and the current exceeds the rated current;If there is an abnormal phenomenon, check the inspection.After five minutes of running, the stop check whether there is an abnormal phenomenon, and confirm that there is no abnormal phenomenon before turning on.When testing, you should start the low speed first and check whether the rotation direction is correct. When starting at a high speed, you should wait for the static to prevent high -speed reverse rotation, causing the switch to stick and damage the motor.When reaching a normal speed, you should detect whether the input power supply of each phase should be normal, and the operating current cannot exceed its rated current. If the operating current exceeds its rated current, the voltage of the supply should be checked.For the centrifugal box, the required motor power refers to the power required when the air outlet is fully opened under the condition of mechanical losses and the amount of reserves.If the external resistance is carried out, the motor is in danger of burning. For safety reasons, the air outlet or inlet pipeline plus valve should be closed during start.Pay attention to whether the current exceeds the specified value.