ABB Conceptpower DPA 500 - Page 21

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Modifications reserved
3. DUAL INPUT FEED - Connect the input wires 3-phases + N coming from the LV Distribution Board
(mains), by referring to the table here below. Keep the phase rotation in clock-wise sense. In case of
dual input with 2xN wires, the 2xN have to be at the same potential, ideally they have to be joined
together somewhere upstream the UPS. Dual input feed with just 1xN is also possible.
RECTIFIER INPUT CABLE
UPS BUSBAR
BYPASS INPUT CABLE
UPS BUSBAR
Phase L1
1-L1
Phase L1
2-L1
Phase L2
1-L2
Phase L2
2-L2
Phase L3
1-L3
Phase L3
2-L3
NEUTRAL
N
NEUTRAL
N
EARTH
PE
EARTH
PE
Bottom cable entry Top cable entry
4. Connect the output wires 3-ph + N. N at the output is not mandatory (depends on the type of load).
LOAD OUTPUT CABLE
UPS BUSBAR
Phase L1
3-L1
Phase L2
3-L2
Phase L3
3-L3
NEUTRAL
N
EARTH
PE
Bottom cable entry Top cable entry