PREMIER POWER PACK INSTRUCTION MANUAL
GLT.MAN-138
PAGE 11
Issue: 1.13 27/7/2012 N.R.P.J.
RECOMMENDATIONS FOR CABLE TO AUXILIARY EQUIPMENT
BS5839 Part 1 recommends that all parts of a fire system are wired in a shielded fire resistant cable.
It is recommended to use 2 core (plus screen) cable with conductor cross section between 1.5mm
2
and 2.5mm
2
If the power supply is used for non BS5839 fire alarm purposes, many other types & sizes of cable may be
suitable.
CHECKING THE BATTERY CHARGER VOLTAGE
The Premier Power Pack Power Supply, like many other EN 54 Power supplies, will turn off its battery charger
when the batteries are disconnected. To check the charger voltage it will be necessary to set the unit into
configuration mode.
To do this:-
1.
Disconnect batteries & turn off mains
2.
Fit a jumper link to the Sel. Battery jumper.
3.
Turn on Mains.
4.
If the PSU has a LCD screen it will display “FACTORY CALIBRATE – FLOAT-V Adjust POT”
5.
The charger leads will now show the float charge voltage which is nominally 27.6V DC at 25
o
C
6.
The Charger Potentiometer is factory Preset, and should not be altered. If the charger voltage is more
than half a volt different to the voltage shown on the table below, contact your supplier.
TEMPERATURE
CHARGER VOLTAGE
-5
28.76
0
28.62
5
28.45
10
28.26
15
28.05
20
27.83
25
27.60
30
27.36
35
27.13
40
26.92
45
26.72
50
26.54
