WHITECOTES CIRCUIT FAILURE MONITORING UNITS

The basic use of a switched maintained system is to energise the emergency lighting when required by operation of the local switched supply but automatically illuminate in the event of local sub-circuit supply failure (irrespective of the position of the local switch). Changeover relays are compact and easy to install. When using changeover relays, switched maintained emergency luminaires are energised whenever a local switched supply is present and, automatically, when a local sub-circuit failure occurs.

• Static inverter changeover module
• Suitable for 50V, 110V or 230V AC or DC systems
• In the event of local sub-circuit supply failure the local emergency lighting circuit is energised (irrespective of the position of the local switch)
• Compact and easy to install
• Supplied either as a changeover module, which can be integrally mounted within the luminaire, or housed in a fire rated
• enclosure for remote mounting
• Emergency lighting changeover relays with an additional dimming inhibition relay that will restore a fitting that was running in a mains dimmed state, to full brightness for emergency operation
• Compatible with fluorescent and LED loads
• The associated control gear must be capable of being run from the emergency voltage