SR EN 50171:2003

Central power supply systems

This European Standard specifies the general requirements for central power supply systems for an independent energy supply to essential safety equipment. This standard covers systems permanently connected to AC. supply voltages not exceeding 1 000 V and that use batteries as the alternative power source. The central power supplies are intended to energise emergency escape lighting in the case of failure of the normal supply, and maybe suitable for energising other essential safety equipment for example: - electrical circuits of automatic fire extinguishing installations; - paging systems and signalling safety installations; - smoke extraction equipment; - carbon monoxide warning systems; - specific safety installations related to specific buildings e.g. high-risk areas. Schematic representations of typical central power supply equipment are depicted in clause 4. When a UPS system is used to feed these essential safety systems, it must comply with EN 50091-1 and its relevant parts, and the additional requirements of this standard. The power supply system for fire alarms c

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General information

Status : Withdrawn
Approval date : 10/31/2003
Publish date : 11/1/2003
Withdrawal date : 11/15/2024
Number of pages : 24
ICS : 29.240.01 Power transmission and distribution network in general
Technical Committee : 36 - Power electronic systems and equipment

Relations with other standards:

Normative reference SR EN 50091-1-1:2002
Normative reference SR EN 60947-2:2001
Normative reference SR EN 1838:2003
Normative reference SR EN 60898+A1:1995
Normative reference SR EN 60285+A1:1998
Normative reference SR EN 60622:1998
Normative reference SR EN 60623:1998
Normative reference SR EN 60598-1:2001
Normative reference SR EN 60146-1-1:2002
Normative reference SR EN 60947-4-1:2001
Normative reference SR EN 60896-2:2001
Normative reference SR EN 61558-2-6:2002
Normative reference SR EN 60598-2-22:1998
Normative reference SR EN 60896-1+A2:2000
Normative reference SR EN 50091-1-2:2002
Normative reference SR EN 50272-2:2003
Replaced by SR EN 50171:2022