Liebert UPS System - Manual (Page 14)

Chapter 1 Introduction
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Mains
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output
Bypass
Fig 1-12
1.6 Basic Functions
Battery Management Function - The UPS has advanced battery management
functions including battery fault detection and backup time forecast.
Soft Start Function - Complete delay soft start function can reduce the surge to the
UPS unit and utility source.
Alarm and Protection Function - The UPS can generator audible and visual alarm
through LCD, input/output contacts and network transmission. It can help
maintenance personnel to locate and clear the faults that are sent out in time,
accurately and in detail.
Dark Start Function - When the utility is unavailable, the UPS can start from battery
that is connected to the DC Bus.
Automatic Re-start when Utility returns - This function only applies to the UPS that
has batteries. The UPS shuts down due to low battery, and restart automatically
when the utility returns. At this time , its operation mode is the one before the utility
fails.
Monitoring Functions - The UPS monitoring system has an advanced monitoring
function and parallel control functions. It supports flexible network monitoring to
satisfy different customer requirements.
1.7 Specifications
1. Functional Parameters