SWITCH CLOSING / TRIPPING SUPPLY UNITS.  30 / 50 / 110 VOLT.

 

A range of compact, self-contained units incorporating a battery, automatic charger, standing load power supply and all necessary controls and indication to give a high integrity DC. supply for switchgear closing and tripping purposes.

 

Self Contained

 

The units are housed in a welded sheet steel cubicle of robust construction to IP32, painted in Grey to RAL7035.  There are three standard sizes: - 480H x 480W x 150D, 720H x 480W x 150D and 800H x 600W x 200D (mm).  The cubicles are intended for switchboard or wall mounting but can be floor standing if required and have gland plates top and bottom.

 

Charger Specification

 

The charger is isolated from the mains supply by a double wound transformer.  It is

a constant current transistor controlled type with + 1% output regulation for + 10%

input variation and is open and short circuit proof.

 

Standing Loads

 

Standing loads of up to 100VA are catered for both continuously and after mains

failure, with up to 3Ah available capacity.  The power supply is a constant voltage

current limited transistor controlled type and feeds the output via blocking diodes

for a true no-break supply on mains failure.

 

Battery

 

Sealed, maintenance-free, nickel cadmium cells are used with a temperature range

of –20^oC to +50^oC.  The charge rate is factory set at a minimum value to maximise

the battery life expectancy and will fully recharge the battery from flat in 42 hours, although tripping duties are available in under an hour.

 

Controls and Instrumentation

 

The unit is supplied with; a voltmeter with dummy load resistor and test switch, an input MCB and mains lamp, a charger output fuse, double pole closing output fuses and, where applicable, a standing load power supply fuse and output fuse.  The tripping output is unfused.

 

Alarms

 

A charge failed alarm is fitted as standard to all the units and the optional extras are: - DC. low voltage, DC. high voltage, mains failed, DC. earth leakage and common alarm.  All alarms have separate volt-free changeover contacts for remote indication and can also operate local panel indication if required (extra battery capacity may be necessary for long autonomy periods).

 

Non-Standard Units

 

We are pleased to quote for any non-standard voltage, additional controls, distribution or indication.  We specialise in offering custom designed and built units to any specification.

 

Go to brief specifications of the full range of standard units.

 

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EXBROOKNES SUPPLIES & SERVICE LTD.

EXBROOKNES SUPPLIES & SERVICE LTD.,

TAMESIDE BUSINESS PARK,  WINDMILL LANE,

DENTON,  MANCHESTER.  M34 3QS  UK.

TEL. – +44 (0)161 336 3971  FAX. – +44 (0)161 335 0106

EMAIL. - sales@exbrooknes.co.uk