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PowerValue 11 RT 6-10kVA 17
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).
When the Earth system of the inputs are different, a
transformer should be connected to the inputs. Figure
18, Figure 19, and Figure 20 show the alternative ways of
connecting the inputs to the transformers.
Figure 17: UPS Diagram with Dual Input Feed
Figure 18: UPS with transformer in the normal AC input
Figure 19: UPS with transformer in the bypass input
Bypass AC
MLVS1
Normal AC
MLVS2
Load
Bypass AC
MLVS1
Normal AC
MLVS2
Load
Transformer
Bypass AC
MLVS1
Normal AC
MLVS2
Load
Transformer
