Liebert NX UPS System user manual Battery Installation

Battery Installation

2.0BATTERY INSTALLATION

2.1Introduction

The UPS battery bank consists of battery blocks connected in series to provide a D.C. string voltage as required by the UPS converter. The 'AUTONOMY TIME' (the time during which the battery can maintain supply to the load in the event of a mains failure) is limited by the ampere-hour capacity of the battery blocks and in some cases this results in several strings being connected in parallel.

The NX usually has internal batteries, but longer run time is available by using an external battery cabinet.

The battery cabinet will be supplied in one of the following forms:

1.Complete installation, comprising the battery cabinet, batteries and protective device.

2.Battery cabinets and protective device only—batteries supplied by others

NOTE

10kVA to 30kVA UPS models contain an internal battery compartment that can accommodate up to 44 blocks of batteries for 12Ah/12V; 80 blocks of batteries for 7.2Ah/12V

The battery bank may be disconnected from the UPS for maintenance or service.

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