Alpha Technologies CXPS 48-2T 48V Pos Gnd - Manual (Page 27)

Argus Technologies Ltd. 053-393-C0 Rev A WC
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5.4 DC Output Connections
WARNING
Leave cables or bus bars 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 (for Canadian users, RW90 Type). Control and sense
wires shall be UL approved Style 1015 (for Canadian users, TEW type).
The common output leg of the rectifier system should be connected to ground. This is typically done at the load
common termination point.
5.4.1 Battery Connections
Battery cables should be sized for a 0.25V drop from battery to the power system at full load including anticipated
growth. The cables should also meet ampacity requirements. Cables terminating directly on battery posts or
connection details should be secured so that there is no stress on the battery posts. Lead plated lugs and lead
plated or stainless steel hardware should be used on all terminations at vented batteries to reduce corrosion.
Prepare, route and connect cables from power system to battery termination details. Terminating points should be
burnished and a corrosion-inhibiting agent, such as NO-OX-ID “A”
™, should be applied to all battery terminal
connections.
The 1200A Two Tier Distribution Center (Vista II Two-Tier UDC) allows for (4) sets of battery connections for both
hot and return. Connections allow for 3/8” on 1”C lug connections.
Figure 6–Vista II two-tier battery connections (hot and return)
Site Ground Hot Return
NOTE: Final connection to battery live should not be made, insulate and leave disconnected or remove the battery fuses.
Switch battery contactors off (if used). See system startup procedure before connecting batteries online.
5.4.1.1 Back-To-Back Connections
To allow for back-to-back connections on the battery bus bars, the PEM nuts must be removed
from rear side of each bar. This requires rear access to the system. Reference Figure 7 for PEM
nut removal detail.