· EN50131-1 Generic standard
· EN50131-2 Standard for detection devices
· EN50131-3 Standard for control panels and peripherals
· EN50131-4 Standard for warning devices, bells, sounders etc.
· EN50131-5 Standard for interconnections, wires, wireless links etc.
· EN50131-6 Standard for power supplies
· EN50131-7 Application guidelines, mainly for installers |
| However, not all of these standards are published. Currently only prEN50131-1: 2004, a redraft of the generic standard, EN50131-6 and EN50131-7 are being introduced. This means that there are some holes in the detail covered by the standard. To get around this, the British Standards Institute has created another document called PD6662. |
| What is PD6662 - PD6662 is a document which takes prEN50131-1, and also calls up the relevant parts of BS4737 to fill in the gaps left in EN50131 due to the component standards not being published yet. Additionally, it calls up DD243, which is not being replaced by EN50131. This gives us two things: |
· 1. A more complete document to work with, causing less ambiguity.
· 2. A hybrid standard which has many familiar features of the old BS4737. |
| Both the above points should mean an easier transition into EN50131. As and when the component standards within EN50131 are published, PD6662 will be updated to remove the relevant references to BS4737. Over the coming years there will be an incremental changeover to the full EN50131 family of standards. Until this all happens, in the UK, we will be installing systems to PD6662: 2004, rather than EN50131. |
