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Central Battery System

Frankie 223

Hi all,
On a project we have a non-maintained Central Battery System which supplies power to some of the luminaires in the space. It has been noticed that the system will work only if there a power shutdown while the respective emergency light fittings will not operate in a local circuit failure. As this is against the standards, a proposal was made to install contactors after all lighting circuits CPD so when a circuit failure happens, all the EM lights will go on.
Do you know if there is any other more efficient way of dealing with this issue?
Many thanks

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    This will depend how it has been wired in - if for example the batteries are only connected to the EM fittings via a common bus that is dead most of the time then the switching to energize that is central switch that would be harder to change as it is designed for one-out all-out operation.


    If however battery power is available at all the fittings all the time, and there  is some sort of alarm wire that puts the lights on, then you already have half of what you need.
    It may be easier to add an additional stand-alone EM fitting or two that are supplied by the local circuits you wish to monitor if the re-wiring becomes too difficult and its only a couple of exits that need illumination.

    Mike.

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  • 0

    This will depend how it has been wired in - if for example the batteries are only connected to the EM fittings via a common bus that is dead most of the time then the switching to energize that is central switch that would be harder to change as it is designed for one-out all-out operation.


    If however battery power is available at all the fittings all the time, and there  is some sort of alarm wire that puts the lights on, then you already have half of what you need.
    It may be easier to add an additional stand-alone EM fitting or two that are supplied by the local circuits you wish to monitor if the re-wiring becomes too difficult and its only a couple of exits that need illumination.

    Mike.

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