AccuLine TNplus 1000m User Manual page 18

(3) External Battery String Connection for long backup time models
When connecting the external batteries it s recommended to pay attention to
the following:
Use an external battery string with voltage:
24VDC for 1000VA models (2 pcs of 12V batteries),
48VDC for 2000VA models (4 pcs of 12V batteries),
72VDC for 3000VA models (6 pcs of 12V batteries).
Note: Connection of batteries of more or less Voltage than the above
required, will cause abnormality or permanent damage.
A Standard type of battery connector on the rear panel of the UPS is
used for connecting an external battery pack.
The battery connection procedure is very important. Any incompliance
may result in the risk of electric shock. Therefore, the following steps
must be strictly complied with.
- Prepare a battery cable with Standard type connectors which shall
be able to carry the current.
- If there is a battery breaker then turn it off first. Then connect the
battery cable to the Standard type battery connector on the real
panel of the UPS.
- Connect the input power cord of the UPS to the mains power
supply and the external battery string will start to be charged.
Caution!
A DC breaker must be connected between the UPS and the external
battery string if no standard battery cabinet is used.
Caution!
The output sockets of the UPS system may still be electrically live
even if the power supply system has been disconnected from the
mains.
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