Central safety power supply systems (Incorporating corrigenda May 2022 and August 2024)
BS EN 50171:2021
Document Status
Current
Supplement
Mechanical & Electrical Supplement
Series
BS EN
Abstract
Gives general requirements for central power supply systems for an independent energy supply to essential safety equipment. Covers systems permanently connected to a.c. supply voltages not exceeding 1,000V and that use batteries as the alternative power source.
History
Supersedes BS EN 50171:2001. Amendment Corrigendum dated 31 May 2022 - Correction to supersession details in national foreword. Amendment dated 30 September 2024 - Implementation of CENELEC corrigendum August 2024: European foreword, DOW corrected.
ISBN
9780539332681
Subjects
- Building services
- Electrical services
- Power supply/distribution
- Emergency power generation/UPS
- Lighting
- Emergency lighting
Publisher History
With over 100 years of experience the British Standards Institute is recognised as the UK’s National standards body. Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British, European and International standards.
Information
NBS
NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.
Accuris
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