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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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    You will need to monitor each and every lighting circuit, or a % of lighting circuits in an open space to ensure adequate emergency lighting. Generally this is done using phase sensors at each lighting DB connected back to the CBS with a data cable. The tripping of an MCB would then force a programmed zone into an ON state. 

    Is this an AC/DC or an AC/AC system? I suspect the latter given the description. Generally with AC/AC systems, there are dual supplied luminaires with change over relays, with the backup supply live 24/7. This protects against local circuit failure as well as a general power failure. AC/DC systems have a single feed to the luminaire that provides AC during normal operation, and then DC during backup operation. 

    Do you have stand-alone dedicated emergencies or conversions? 

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  • 0

    You will need to monitor each and every lighting circuit, or a % of lighting circuits in an open space to ensure adequate emergency lighting. Generally this is done using phase sensors at each lighting DB connected back to the CBS with a data cable. The tripping of an MCB would then force a programmed zone into an ON state. 

    Is this an AC/DC or an AC/AC system? I suspect the latter given the description. Generally with AC/AC systems, there are dual supplied luminaires with change over relays, with the backup supply live 24/7. This protects against local circuit failure as well as a general power failure. AC/DC systems have a single feed to the luminaire that provides AC during normal operation, and then DC during backup operation. 

    Do you have stand-alone dedicated emergencies or conversions? 

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