BS EN 54-4:1998
Fire detection and fire alarm systems. Power supply equipment
https://doi.org/10.3403/01266991 (published 15/03/1998)
BS EN 54-4:1998 is maintained by FSH/12. This standard is available from the following sources:
Other historical versions of this standard document also exist:
- BS EN 54-4:1998 [current until 06/11/2006]