TM0024 Page 5 of 33 Issue 2.01
1.4 INTERNAL POWER SUPPLY UNIT
The repeater panels are supplied complete with an internal power supply unit, which
is designed to meet the requirements of EN54-4. The Power supply provides a 2.5
amp at 24v dc supply output to both the repeater panel and the battery output.
This unit includes a variable mains input which is capable sensing the incoming AC
mains voltage, for range between 110v and 270v. The AC mains input is protected
by a ceramic mains input fuse rated at 3.5 amps, which is easily accessible.
The unit is supplied complete with a battery temperature lead which requires
attaching to the internal batteries of the control panel. This connection compensates
the charging of the batteries with respect to the ambient temperature of the
enclosure.
The power supply incorporates a set of status LED indications, which are positioned
upon the power supply unit. These indications operate when a fault condition is
detected upon either the power supply unit or the internal batteries, these indications
are as follows:
1. Loss of mains power.
2. Loss of standby power.
3. Reduction of battery voltage.
4. Loss of battery charger.
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