When the motor is under overload fault, simulate the heating characteristics of the motor to protect it, and overload protection corresponds to the characteristics of different tripping levels.

For low-voltage motors, the coils are mainly made of enameled wire or other simple insulation materials, such as composite paper. The insulation of high-voltage motors usually adopts a multi-layer structure

The current of the stepper motor during the operation of the stepper driver is damaged by the stator resistance, inductance, and back electromotive force formed during the entire process of stepper operation.

When disassembling bearings for maintenance, first record the appearance of the bearings, confirm the remaining amount of lubricant, take samples of the lubricant for inspection, and then clean the bearings. As a cleaning agent, gasoline and kerosene are generally used.

At the debugging site, we often encounter motors without nameplates, but we really want to know the speed of this motor. There is no tachometer, and we don't want to bother dismantling the motor. At this point, you can use the multimeter in your hand to solve this problem.

When installing electrical wires, the "three-phase four wire" standard wiring is used, which commonly means: three live wires and one zero wire