ARE Series Chargers
RS-759, Rev. 11
1-2
One-fourth (1/4)-inch hardware must be used in all available mounting holes to mount the brackets to the cabinet.
See cabinet dimensions on (Figures 4-6, 4-7, 4-8, & 4-9) for minimum hardware recommendations for mounting
the power supply to the wall, relay rack, or floor.
1.7
POWER SOURCE
The nominal voltage of the AC source to which the equipment is to be connected must be the same as the nominal
voltage for which the equipment input is set. Check the card supplied with the equipment to see if the unit is
connected for your incoming ac line voltage. If it is not, reset the unit following the voltage changeover
instructions on the schematic diagrams Section 4 of this manual.
For the equipment to function properly, the AC supply voltage must be within the following ANSI Standard
Ranges:
Nominal
Voltage
Minimum
Maximum
120V AC
106V AC
127V AC
208V AC
184V AC
220V AC
240V AC
212V AC
254V AC
480V AC
424V AC
508V AC
Other voltages must be ±10% of the nominal voltage for which the charger is connected. The frequency of the
AC supply must be the specified nominal frequency ±5%.
Table 1-1 lists the AC input currents at rated output for each ARE power supply model.
If the sustained AC voltage fluctuations are outside the specified ranges, contact the Field Service Department of
UNIPOWER.
1.8
CONNECTIONS
Caution:
This equipment must be installed by competent electrical personnel, familiar with
both local and national electrical codes.
All connection terminals are reached through the front door. The input and output power connection points are
located on the accessory panel. On large units, the input connection points are located on the back panel. The
optional alarm connection terminal block is located on the bottom screen.
All equipment is furnished with conduit entrances on each side panel. Clear space is provided in the floor area of
the cabinet for those cases when bottom entrance for cables is desirable.
The power supply should be connected to either a fused AC disconnect switch or an AC circuit breaker. Before
selecting the rating of the protective device and the AC and DC cables sizes, check the equipment nameplate or
Table 1-1 of this manual for the rated currents. National Electrical Code (NEC) should be followed in selecting
the cables sizes. The rating of the protective device on the power circuit feeding the unit must equal or exceed
equipment breaker rating.
Caution:
Make sure the DC breaker is “OFF” and that the correct polarity (i.e. positive to positive
and negative to negative) is observed when connecting the battery to the power supply. Loads
should be connected to the battery terminals, not the power supply terminals (unless no battery is
used).
