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A motor is a machine that converts electrical energy into mechanical energy; if this electrical energy is alternating current, the motor is an alternating current motor, and if the electrical energy is direct current, it is a direct current motor.In most cases, there is AC power first, and then through the rectifier equipment, the AC...
The development of modern AC motor variable frequency speed regulation system has mainly gone through the following stages: Early general-purpose inverters, most of which are open-loop constant voltage-frequency ratio control methods. Its advantages are simple control structure and low cost. The disadvantage is the system Control and speed regulation performance is not high...
In order to provide economical lifting equipment for facilities used in explosive hazardous locations, new products should try their best to achieve the same purpose of use in hazardous locations and non-hazardous locations.The parts that have no effect on explosion-proof requirements should have the greatest interchangeability.Then you can pass on those...
8. It is planned that each production unit will submit a maintenance plan for motors of 10kW and below to the equipment department at one time on the 100th to 100th of each month. The maintenance plan for motors above XNUMXkW can be submitted at any time.The maintenance plan should include the type, quantity, degree of damage, cause, etc. of the damaged motor...
XNUMX. Three-phase asynchronous motor inspection tests mainly include: the measurement of the insulation resistance of the winding to the casing and the windings; the measurement of the DC resistance of the windings in the actual cold state; the no-load test; the insulation of the windings to the casing and the insulation of the windings. Strength test; necessary...