Electrical equipment of elevators. Plants with non-contact control equipment

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Section 5. Electric power plants

Electrical equipment of elevators. Plants with non-contact control equipment

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Encyclopedia of radio electronics and electrical engineering / Rules for the installation of electrical installations (PUE)

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5.5.19. When using non-contact equipment for controlling elevators, the conditions specified in 5.5.20 - 5.5.28 must be met.

5.5.20. Complex control systems for a group of elevators should consist of separate groups of control units, while:

1) each elevator must be controlled by a separate group of blocks, allowing the operation of this elevator regardless of the state of other elevators and their blocks;

2) it should be possible to easily disconnect the elevator units without disturbing the operation of other elevators.

5.5.21. The power supply units of the control system with logic elements must have protection against short circuit, overloads and reduction of output voltages with signaling of its operation. Protection should be built so that in case of short circuit, overload or voltage drop in one output circuit, all output circuits of the power supply are turned off.

5.5.22. If the common point of the control system with logic elements is not grounded, the power supply must be provided with ground fault monitoring of each output circuit with an appropriate alarm.

5.5.23. Power supplies must be capable of being remotely turned on and off.

5.5.24. Elevator control stations, assembled from separate blocks, must be equipped with equipment that indicates the passage of the main signals, or with sockets that allow the connection of measuring equipment to monitor these signals.

5.5.25. The design of control stations and complete devices must provide free access to wires, cables and input rows of terminals.

5.5.26. When installing control stations in cabinets, it is not recommended to install any equipment, except for signaling equipment, on cabinet doors.

5.5.27. Chains of buttons, control keys, limit and limit switches must be galvanically separated. Separation can be done using input matching elements or using relays whose contacts are designed to operate in low current circuits.

5.5.28. Circuits with a voltage of 220 V and above must be laid separately from circuits with a voltage below 220 V of non-contact elements and connected to separate, specially allocated rows of clamps or detachable contact connectors.

See other articles Section Rules for the installation of electrical installations (PUE).

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