Configuring Your Neutral and Ground Connections
20
6.6
Preferred Grounding Configuration, Battery Systems
Open-rack battery systems
, depending on local code requirements and customer preference, are
normally:
1. Floating (ungrounded),
2. Center-tapped and floating or
3. Center tapped and grounded.
Battery cabinet systems
must be connected as floating (ungrounded) systems—
Option 1
above.
Center-tapped or grounded battery systems are not possible with battery cabinet systems.
Whether the battery system is open-rack or cabinet, the metal rack parts or cabinet must be grounded
to the UPS module ground bus.
Figure 10
illustrates how a simple, one-cabinet system would be grounded. For systems with multi-
ple cabinets, the same configuration would apply. However, for simplicity, the installer can connect
all the battery cabinet grounds for a particular module together and run a single ground conductor to
that UPS module ground (in the same conduit as the phase conductors).
Figure 10 Preferred grounding configuration, battery systems
Summary of Contents for Liebert Series 610
Page 69: ...Installation Drawings 63 Figure 44 Battery power pack system 88 797616 03 Rev 08 ...
Page 70: ...Installation Drawings 64 Figure 45 Battery power pack Size A 88 797616 01 Rev 10 ...
Page 104: ...Installation Drawings 98 ...
Page 109: ...Site Planning Data Series 610 500 750kVA Multi Module Systems 103 NOTES ...
Page 110: ...Site Planning Data Series 610 500 750kVA Multi Module Systems 104 ...
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