EN 50171:2001
(Main)Central power supply systems
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 covered by EN 54 are excluded.
Zentrale Stromversorgungssysteme
Systèmes d'alimentation à source centrale
Central power supply systems
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 50171:2002
01-maj-2002
Central power supply systems
Central power supply systems
Zentrale Stromversorgungssysteme
Systèmes d'alimentation à source centrale
Ta slovenski standard je istoveten z: EN 50171:2001
ICS:
29.200 8VPHUQLNL3UHWYRUQLNL Rectifiers. Convertors.
6WDELOL]LUDQRHOHNWULþQR Stabilized power supply
QDSDMDQMH
SIST EN 50171:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD EN 50171
NORME EUROPÉENNE
EUROPÄISCHE NORM May 2001
ICS 29.240.00
English version
Central power supply systems
Systèmes d'alimentation à source centrale Zentrale Stromversorgungssysteme
This European Standard was approved by CENELEC on 2000-08-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50171:2001 E
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EN 50171:2001 - 2 -
Foreword
This European Standard was prepared by the CENELEC BTTF 62-8, emergency lighting
systems.
The text of the draft was submitted to the formal vote and was approved by CENELEC as
EN 50171 on 2000-08-01.
This European Standard is intended to replace, in part, national Standards relating to Central
Power Supply Systems. For Emergency Lighting systems it should be read in conjunction with
the standards being produced by CENELEC BTTF 62-8 and EN 1838, Emergency lighting.
The following dates were fixed:
� latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2001-12-01
� latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2003-08-01
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- 3 - EN 50171:2001
Contents
Page
1 Scope. 4
2 Normative references . 4
3 Definitions. 5
4 Types of central power supply systems . 7
5 Operating conditions and requirements . 10
6 Components and their ratings. 10
7 Information for installation and operation of central power supply systems. 19
Annex A (informative) System testing . 20
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EN 50171:2001 - 4 -
1 Scope
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
...
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