APC VS 50 - Manual (Page 16)

Magnum VS –48 Vdc User’s Manual Page 11
3.8. Load Connections
Cable Size Considerations
The dc load cable(s) should be sized to limit the voltage drop from the dc power plant to the
loads per system design requirements. The cable(s) must also carry the full load current during
battery operation. During battery operation the voltage will be lower and for constant power
loads, the current will typically be higher. If assistance is required to determine the necessary
cables for the application, contact your sales representative or APC.
Circuit Breaker Protected Load Connections (30 or 60 A)
The circuit breaker lug landing connection provides a pair of #10-32 studs on 5/8” centers for
mounting two-hole lugs. A ring size of 6 mm may also be used. A right angle bus bar with two
studs is provided to land the lugs. Load Connections should be made as shown in. Cover
connections with heat shrink after assembly.
Figure 3.8-1 Connections to Circuit Breakers
GMT Fuse protected Load Connections
Connections for ¼ to 14-A loads require a ring terminal with a 0.170 in (4.3 mm) clearance hole
and are located at the rear of the unit. Load connections should be made as shown in Figure
3.8-2 and Figure 3.8-3
Load Returns
-54 Volt Load Connections