Ballings
The task of bearings in mechanical structures and engines is to reduce friction, and if they are damaged, this task will not be performed well. Bearings usually fail quickly, so there is a small chance that the protection will issue a shutdown order before the bearings fail completely. It is better to use the protection in such a way that the motor is not damaged due to the failure of the bearings and the passage of a large current.
The heating of the engine wiring
Direct or indirect motor wiring failures are related to engine failure.
Motor Jews in Launch Conditions
Starting the machine is directly related to the amount of current, and as the speed of the motor increases, the current of the motor decreases linearly.
Motor engine
The most common factor that causes induction motors to stop is the loss of a power supply phase. This can probably be caused by the burning of one of the fuses on the way to the motor due to the initial inrush current of the motor.
Failure of the nutrition voltage symmetry
The situation where a line is cut off from the three-phase power supply of an induction motor is usually considered as the worst case of imbalance and heat generation in the wiring.
مارد Lubrication of the timely lubrication wire
The towing wire is completely engaged with the elevator motor gearbox and the elevator balance weight, and there is friction between them. If the towing wire is not lubricated on time, we must see the corrosion and wear of the towing wire. Any failure in the elevator's towing wire will result in the failure of the elevator's gearbox in the short term.