Vertiv
™
| Liebert® EXL™ 625-1100kVA Installation Manual | Rev. 3 | 02/17 21
2.7.3 Preferred Grounding Configuration, Battery Systems
Open-rack battery systems, depending on local code requirements and customer preference, are normally:
• Floating (ungrounded) OR
• Center-tapped and floating
Battery cabinet systems must be connected as floating (ungrounded) systems.
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.
2.8 INTERNAL BREAKER SETTINGS
All internal breakers—CB1, CB2 and BFB—were installed and set at the factory.
NOTICE
Risk of incorrect adjustment. Can cause equipment damage.
Factory circuit breaker settings must not be altered without contacting Vertiv
®
customer support.
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