Micro
ARE-M Series 24V Chargers, Single Phase
Installation
PM990-1070-24, Issue 12
2-8
2.4
ELECTRICAL INSTALLATION
Each charger is internally connected for the nominal AC input voltage stated in the charger’s model
number. Refer to the model number on the charger nameplate and Section 1.2 Model Designation to be
sure that the charger is intended for your incoming AC line voltage.
If there are sustained AC voltage fluctuations outside the ranges given in the Specifications section of this
manual, contact the Field Service Department of UNIPOWER.
A block diagram of a typical charger electrical installation is shown in Figure 2-3. Note that the load is
connected to the battery string terminals through a fuse or circuit breaker.
User's AC Electrical
Service Panel
ARE Series
Float Charger
+
_
Battery String
+
_
Load
+
_
Single-Phase
AC Input
DC Output
FIGURE 2-3 ELECTRICAL INSTALLATION, BLOCK DIAGRAM
Chargers are furnished with three holes for top conduit entrances; see Figure 2-4. These holes can be
enlarged to accommodate 1-1/2” conduit.
FIGURE 2-4 TYPICAL ELECTRICAL ENTRANCE AND BREAKER LOCATIONS
All charger connection terminals are accessed by opening the hinged front panel. AC input and DC
output power terminals are located on the accessory panel at the right front of the unit. The alarm
terminal block is located on the Interface Board at the left front of the unit. AC and DC terminals are
shown in Figure 2-5. Connection locations vary with cabinet size.
Alarm Wires
Operator
Panel
AC Circuit
Breaker
DC Circuit
Breaker
DC Output Cable
AC Input
Cable
