4
2.1.3 Rack Mounting (4 Enclosure Only)
The SGC can be installed in most relay racks with standard EIA hole spacing. If a relay rack is needed, they are
available for purchase from La Marche. The 4 enclosures are shipped from the factory with the necessary brackets
installed for rear mounting on a
19” relay rack (The same bracket is used for wall mounting and cannot be
removed). If center mounting is desired, a rack-mounting kit is available for the 4 enclosure. Before installing the
charger on the rack, locate the placement of the conduit entrances and assure the knockouts on the sides or
bottom of the charger are accessible after the charger is rack-mounted. The table and figure below show the
rack-mounting options for SGC.
Rack Mounting Procedure
To rack mount the SGC, first mount the charger onto the rack-
mounting brackets using the hardware supplied. Second, install the
brackets onto the rack. Provide at minimum 6in (152mm) of air space
above and below to allow for cooling.
2.2
Changing Transformer Taps
NOTE:
This procedure refers
only
to SGC battery chargers that are multi-tap (
ABD1)
. All other SGC battery
chargers do not include transformer taps.
The multi-tap SGC accepts standard input voltages of 120, 208, or 240 VAC by changing the connections to the
input terminals. Before changing the AC input taps, assure that AC supply and DC loads to the SGC are turned off
and locked out. Verify that no voltage is present by using a voltmeter at all input and output terminals. Turning
off the AC and DC circuit breakers on the SGC does NOT
eliminate live voltages inside the enclosure. Additionally,
de-energize any external wiring to the alarm relay contacts. Change the connections to the input terminals as
shown in the table and figure below.
Note:
Input mains voltage must also be changed in the configuration menu.
Changing Transformer Taps Procedure
Before beginning any work inside the charger enclosure, ensure that all incoming AC supply and DC load wires
are de-energized. Verify that no voltage is present inside the case by using a voltmeter at all input and output
terminals.
Table 3
–
Input Terminal Connections
Figure 4
–
Rack-Mounting Configurations
Table 2
–
Available Rack Mount Configurations
