Emergency lighting

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Section 6. Electric lighting

Electric lighting. A common part. Emergency lighting

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

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6.1.21. Emergency lighting is divided into safety lighting and evacuation lighting.

The safety lighting is designed to continue working in the event of an emergency shutdown of the work lighting.

Work lighting fixtures and safety lighting fixtures in industrial and public buildings and in open spaces must be powered from independent sources.

6.1.22. Lamps and light indicators of evacuation lighting in industrial buildings with natural lighting and in public and residential buildings must be connected to a network that is not connected to the working lighting network, starting from the substation switchboard (lighting distribution point) or, if there is only one input, starting from input switchgear.

6.1.23. The power supply of lamps and light indicators for evacuation lighting in industrial buildings without natural lighting should be carried out similarly to the power supply of safety lighting lamps (clause 6.1.21.).

In industrial buildings without natural light in rooms where 20 or more people can be at the same time, regardless of the presence of safety lighting, evacuation lighting along the main aisles and "exit" light indicators should be provided, which automatically switch when their power is cut off to a third independent external or local source (accumulator battery, diesel generator set, etc.) not normally used to power working lighting, safety lighting and evacuation lighting, or evacuation lighting fixtures and "exit" signs must have an independent power source.

6.1.24. When assigning all or part of the safety lighting fixtures and evacuation lighting to a special group of the first category in terms of power supply reliability, it is necessary to provide additional power for these fixtures from a third independent source.

6.1.25. Emergency lighting fixtures, light indicators of evacuation and (or) emergency exits in buildings of any purpose, equipped with autonomous power sources, in normal mode can be powered by networks of any type of lighting that are not switched off during the operation of buildings.

6.1.26. For premises in which people are constantly occupied or which are intended for the constant passage of personnel or unauthorized persons and in which safety lighting or evacuation lighting is required, it must be possible to switch on these types of lighting during the entire time when the working lighting or safety lighting is on and evacuation lighting should turn on automatically when the emergency lighting goes out.

6.1.27. Application for working lighting, safety lighting and (or) evacuation lighting of common group panels, as well as installation of control devices for working lighting, safety lighting and (or) evacuation lighting, with the exception of auxiliary circuit devices (for example, signal lamps, control keys), in general cabinets are not allowed.

It is allowed to power the safety lighting and evacuation lighting from common shields.

6.1.28. The use of networks supplying power electrical receivers to power security lighting and evacuation lighting in industrial buildings without natural lighting is not allowed.

6.1.29. It is allowed to use hand-held lighting devices with batteries or dry cells for security lighting and evacuation lighting instead of stationary lighting fixtures (buildings and premises without permanent human presence, buildings with a built-up area of not more than 250 m2).

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

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