Battery Rating (modules only). This setting is a battery discharge rating in kilowatts under partial load for an extended period, typically 60 minutes. The UPS uses the two battery shutdown voltage settings and the two bat- tery discharge ratings in computing rated and calculated time remaining during a discharge event.

NOTE

The Low Battery alarm setting is designed to be useful at full load battery discharge rates. It is typically set for 10 volts above the 60-Minute Battery Shutdown voltage, to provide some measure of warning under all circumstances. If the discharge period extends past 15 minutes (i. e., the load on the UPS is less than full capacity), the Battery Shutdown voltage setting is gradually and automatically increased to protect the batteries from deep discharge. The Low Battery alarm setting is not automatically increased and should not be relied upon as an accurate indicator of battery time remaining. Instead, the operator should consult the Battery Time screen or Present Status screen to see the calculated time remaining based on actual usage during the discharge period.

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Operation

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PRODUCT

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Liebert Series 600T manual Product