04-3788_ABB_OPM_PVA11 6-10kVA-RT_EN_140423
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Modifications reserved
Dual Input Feed Connections
In the dual input feed configuration, two separate AC inputs are connected to the UPS (one for the inverter
and one for the bypass).
Figure 18: UPS Diagram with Dual Input Feed
When the Earth system of the inputs are different, a transformer should be connected to the inputs. Figure 19,
Figure 20, and Figure 21 show the possible ways of connecting the inputs to the transformers.
Figure 19: UPS with transformer in the normal AC input
Figure 20: UPS with transformer in the bypass input
Figure 21: UPS with transformer in normal and bypass inputs
Follow the steps below for cabling the UPS:
1. IMPORTANT: Connect the Earth wire
2. Ensure that the jumper JP is disconnected
3. Connect the input, output and bypass cables
Use appropriate tools and terminal splices to guarantee a reliable contact between the wires and the terminal
blocks.
Figure 22: Dual Input Feed connections for 6kVA units
