The requirements for the main switch of the machine roomless elevator are not the same as those of the main switch of the organic room elevator. The main switch of the machine roomless elevator must meet the following requirements:
1, the number of main switches
Each elevator should be separately equipped with a main switch that can only cut off all the power supply circuits of the elevator.
2, the main switch position
It should be convenient and quick to access the operating mechanism of the main switch.
1 If the control cabinet is not installed in the hoistway, the main switch should be installed in the control cabinet. If the control cabinet is installed in the hoistway, the main switch should be placed on the emergency operation screen.
2 If it is not easy to directly operate the main switch from the control cabinet, the control cabinet shall be provided with a circuit breaker capable of breaking the main power supply;
3 Within 1m of the elevator drive main unit, there should be a main switch that can be accessed or a stop device that meets the requirements, and can be easily operated.
3, the main switch capacity
It should have the ability to cut off the maximum current in normal use of the elevator.
4, the main switch action requirements
The main switch shall not cut off the lighting and ventilation of the car, the lighting and power sockets between the equipment, the power socket of the car top and the pit, the lighting circuit of the elevator shaft lighting and the alarm device.
5, anti-misoperation measures
The main switch should have a stable open and closed position and can be locked with a padlock or other equivalent device in the open position to ensure that no malfunction occurs.
Any capacitor that improves the power factor should be connected in front of the main switch of the power circuit.
This article tags: None Machine room Elevator Main switch Requirements