Micro
ARE-M Series 24V Chargers, Single Phase
Installation
PM990-1070-24, Issue 12
2-1
2.0 INSTALLATION
This chapter describes installing
Micro
ARE Series 24V Chargers. To contact a UNIPOWER field service
technician for assistance, refer to Section 1.5 Product Support.
The charger is fully assembled and tested at the factory. Refer to the Front Matter and Section 2.3
Unpacking for receiving and unpacking instructions and for instructions on moving the equipment to the
installation site.
These chargers can be mounted to a wall, in a relay rack, or on a floor. All are furnished with brackets for
standard wall or relay rack mounting. Optional floor mounting brackets and extra-wide brackets for wide
relay racks are available. Cabinet dimensions and weights are provided in the Specifications section.
Conduit knockouts are located in the cabinet top for AC input cables, DC output cables and alarm wiring.
Cables and wires are supplied by the user.
WARNING
Electrical shock hazard
Hazardous voltage can cause death or serious
injury.
Remove power from all wires and terminals
before working on equipment.
AVERTISSEMENT
Risque de choc électrique
Les tensions dangereuses peuvent causer la mort
ou des blessures graves.
Coupez l'alimentation de tous les fils et les bornes
avant de travailler sur les équipements.
IMPORTANT:
The installation must conform to the National Electrical Code and other applicable
industry and local codes.
INSTALLATION SUMMARY
2.1
A typical installation sequence is provided below. References to appropriate sections in this manual are
included.
1.
Review the list of user-supplied tools and accessories in Section 2.2 Reference Material. This section
also contains a table and a procedure for determining battery and distribution cable sizes based on
current load and length of run. Refer to the National Electrical Code and other applicable codes to
determine AC cable size.
2.
Select a location for the charger. The chargers are cooled by natural convection and require at least 3"
(76mm) of space below the charger and 3" above the charger. The charger must be mounted over a
non-combustible surface. See Section 2.3 Mechanical Installation.
3.
Move the charger to the selected location. See Section 2.3.
4.
As appropriate, install charger mounting brackets for a wall, relay rack, or floor. Fasten the charger to
the selected mounting surface or rack.
5.
Install a user-supplied electrical service panel (as needed) for powering the charger. See Section 2.4
Electrical Installation. Install AC input conduit and wiring between the user’s AC electrical service
panel and the charger.
6.
Install battery cabling. Route cabling through overhead cable racks between the battery string and the
charger DC output terminals.
7.
Install customer load supply and return cabling. Connect the cabling to the battery string or directly to
the charger, if a battery string is not to be connected to the charger. If the customer load is connected
to the battery string, install a circuit breaker or fuse in-line with the cabling.
