1. Check before the motor installation
1.1 Motor mounting size and basic parameters check.
1.1.1 Universal Motors can be checked according to motor samples. Special motors or technical protocols, the motor of the outer graph must be inspected according to the agreement requirements and proofreading, and the results can be performed after the results can be performed.
1.1.2 The motor nameplate is consistent with the contract or agreement.
1.1.3 Turn in the direction of rotation.
Low-pressure general product (H80 - h315) does not rotate requirements, the motor can be positive and inversely operated; low voltage high power products must look at whether the motor direction indicator and contract or agreement are consistent.
The high pressure 2,4 pole motor rotation is required, and the 6-pole motor has no rotation requirements (except special circumstances). The direction of rotation must consistent with the direction of the main unit to act normally, otherwise the motor is highly tempered by the motor.
1.2 Motor check.
1.2.1 DC resistance check
Motor three-phase winding DC resistance check: Measure the DC resistance of the three-phase windings, the difference between the three-phase DC electrical resistance of one phase and the average value of the three-phase winding DC resistance is larger than the average value of the three-phase winding DC resistance. 1% .
1.2.2 insulation resistance check
Insulation resistors Check the insulation resistance of the winding on the ground. The insulation resistance of the stator windings was measured using a shaker having a output voltage between 500 to 2500 volts DC voltage. If the measured value is ≤ 1 MΩ / kV, the winding is to be drying.
2, basic examination
2.1 The foundation should have sufficient strength to avoid resonance of the system and the power generated in normal and abnormal operating conditions.
2.2 Basics should be able to withstand sudden mechanical moments in the motor start or in abnormal conditions.
2.3 Basis or steel foundation should allow about 2 mm liner. However, it should not exceed 4 mm under any circumstances.
3, find a status request
3.1 When the motor is installed, the motor shaft center line must be consistent with the centerline of the drive machine, otherwise the bearing damage and the shaft break, the tolerance between the two couplings meets the standard. Pay special attention to protect the bottom foot plane of the motor, do not have bumps, damage. When adjusting the motor center, the flat pad should be increased between the bottom plane and the rigid foundation of the motor, and the number of pads should be as small as possible.
3.2 When you find a time, you should ensure that the axial gap is sufficient while considering the amount of thermal expansion of the motor.
4, test machine
4.1 Empty test machine: First test machine, point to the motor, check the motor. The rotation is energized correctly. The initial operation is detected every 10 minutes to detect the vibration of the motor, the bearing temperature, after 30 minutes, can extend the detection time interval, and detect once for 30 minutes. Run 2 hours, no problem can stop the test machine.
4.2 Full load test machine: Full load test machine items. Just running time to reach more than 4 hours.
EDTOR: JQ, read full article, original title: General knowledge of motor initial use
Article Source: [Micro Signal: Wwygzxcpj, WeChat public number: motor technology and application] Welcome to add attention! Please indicate the source of the article.
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