The Menvier-JSB series of central battery systems from Cooper Lighting and Security have been designed to satisfy the requirements of the BS EN 50171 (2001) standard for emergency lighting central power supply systems.
Legislative changes in the last 2 years have greatly extended the requirement for emergency lighting in open areas in buildings, as well as increasing the minimum lighting level to 0.5 lux and both of these factors have stimulated the use of slave luminaires powered by a central battery system.
The new Menvier-JSB range comprises both AC/DC and static inverter systems, all of which are available with a choice of five different battery types to suit the requirements of individual applications.
All systems are fitted with a solid-state, constant-voltage charger that is capable of recharging the batteries to 80% of capacity within 12 hours, reaching 100% within 24 hours. A full-charge LED gives an indication that the battery recharging process is complete after a mains failure or test.
Deep discharge protection takes the form of a low battery voltage disconnect (LVD) circuit, which automatically disconnects the load when the battery voltage falls below a pre-set level. A latching LVD alarm provides a warning that the unit has been subjected to a discharge beyond its rated capacity, and this can only be reset by acknowledging the alarm condition.
The system’s audible alarm has a mute facility as standard, and there is also a facility for connecting a remote alarm for use in areas not visited regularly, such as plant rooms.
The units feature digital LCD displays of battery-compartment ambient temperature, charge and discharge currents, and battery voltage.
The AC/DC units can be specified with output voltages of 24, 50 or 110V and durations of 1, 2 or 3 hours, while the static inverters offer outputs ranging from 500W to 17kW, with 1 hour or 3 hour durations.
All Menvier-JSB central battery systems are housed in a robust, standard-sized cubicle fabricated from 1.6mm thick zinc-coated mild steel sheet and finished in RAL7032 grey stove-enamelled powder epoxy polyester paint.