Alpha Technologies Cordex 48-1.2kW - Manual (Page 27)

030-834-J0 Rev A Page 21 of 34
5.7 DC Output for Model 030-834-20 (maximum 4800kw)
The DC cable connections to the system are made within, or just outside, the integrated distribution module
located on the right side of the shelf. To ensure proper access to connections, install DC cables in the
sequence described in this section.
WARNING: Leave cables disconnected at battery and verify output polarity using a voltmeter. Make
battery connections only after all other wiring is completed.
DC output wire shall be UL approved XHHW or RHH/RHW (Type RW90 for Canada)
Figure 9–DC output connections
NOTE: Cabling must be done with enough slack to allow the distribution assembly to be locked into place.
5.7.1 Chassis and Site Ground Connections
WARNING: For safety reasons, ensure the system is properly bonded to the building’s ground grid.
This power system is suitable for installation as part of a Common Bonding Network (CBN) and is intended
to be used in a DC-C configuration (common DC return). In this configuration, both the shelf chassis ground
(via power system chassis ground) and common return shall be connected to the building master ground
bus (MGB) or floor ground bus (FGB), in a larger building, to ensure correct operation of the system and to
prevent drifting floating analog (especially current) readings.
The chassis ground connection is located on the center mount rack bracket. Connect to the #10-32 stud
using single-hole lug and hardware as provided.
The system MGB connection is located within the distribution module to the left of the chassis ground
location (shown in Figure 9 above). The two studs are oriented at a 45-degree angle, which requires a 1/4"
on 5/8" center lug.
Chassis ground
Load breaker
return (+) 4PL
Battery (–) 2PL
Thumbscrew
lock
(illustration only and may not match your installation)
This part of the distribution assembly slides out for ease of connections
Battery (+) 2PL
MGB connection