Enterprise standard requirements for permanent magnet brushless DC motors
5.1 basic requirements
The motor shall comply with the requirements of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures.
5.2 quota
The rating of the motor shall comply with the provisions of Table 1. If there is no special regulation, the data specified in Table 1 refers to the data in the forward direction. If the user has special needs, the product can be customized according to customer needs.
5.3 Mechanical size and installation
The mechanical size and installation of the motor are in accordance with the provisions of GB/T4772.1-1999.
5.4 Appearance
The motor should be neat and tidy, with no rust, mechanical damage and peeling of the surface. The color and marking should be clear, the fasteners should be firmly connected, and the leads or posts should be intact.
5.5 motor steering
The motor can be operated in both positive and negative directions. When facing the end of the shaft, the motor should rotate counterclockwise and stipulate that the direction is positive; when the shaft is extended, the end of the leadless (or terminal) shall prevail.
5.6 speeding
The motor shall be capable of withstanding an overspeed test of no load for 2 minutes at 1.2 times the rated voltage. Without affecting motor performance
Harmful deformation of energy.
5.7 temperature rise limit
Under the environmental conditions and working conditions stipulated in this standard, the motor shall comply with the temperature rise limit specified in 8.10 of GB755-2008.
5.8 overcurrent
The motor should be able to withstand 1.6 times the rated current under rated voltage and hot state, and the short-time over-current test lasted for 1 min without stopping and harmful deformation.
5.9 insulation resistance
The conductive part of the motor shall be not less than 10 MΩ in the cold state of the insulation resistance between the casings, and not less than 2 MΩ in the hot state; it shall not be less than 1 MΩ after the alternating heat test.
5.10 withstand voltage
The conductive part of the motor should be able to withstand the withstand voltage test for 1min without interference or flashover. The test voltage value is 2UN1000V, the lowest is 1500V, the test voltage frequency is 50Hz, and the waveform is the actual sine wave.
The test voltage after the damp heat test was performed at 70% of the standard voltage.
During the test, the motor coil leakage current limit is specified in Table 2.
When a large number of continuously produced motors are subjected to an inspection test, the test time is allowed to be shortened to 3 s, and the effective value of the test voltage is 120% of the original test voltage value. When the withstand voltage test is repeated, the test voltage is 80% of the standard test voltage.
In the type test, the withstand voltage test shall be performed after the overcurrent test and the overspeed test.
5.11 back EMF coefficient
Should meet the motor design requirements. The actual measurement and the calculated value differ from the theoretical value by no more than 10%, and the difference between the three opposite potential coefficients does not exceed 5%.
5.12 salt spray
The salt spray resistance of the motor and controller should meet the relevant requirements of GB/T2423.17-2008.
5.13 damp heat
The motor should be able to withstand the alternating heat and humidity test. After the test, the motor should pass the withstand voltage test, the test is in accordance with the provisions of Table 3; after the test and inspection, there must be no rotor stuck, the surface of the casing should be free of obvious rust and paint bubbles.
5.14 low temperature
The motor should be able to withstand a low temperature test of -25 ° C. At low temperatures, the motor can be started and operated at no load.
5.15 vibration
The vibration limit of the motor should meet the relevant provisions of GB10068-2000.
5.16 Electromagnetic Compatibility
The radio interference (electromagnetic compatibility) generated by the motor during normal operation shall not be too large and shall comply with the relevant provisions of GB4343.1-2003.
5.17 noise
When the motor is operated under the rated speed and rated torque at rated voltage, the measured noise of the A-weighted power level meets the requirements of GB10069.1-2006.
