ABB Conceptpower DPA 500 - Page 26

Modifications reserved
Page 26/94
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