PowerWalker VFI 20000TP 3_3 BE - Manual (Page 26)

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5 Electrical installation
5.1 Electrical Preparations
The UPS unit has the following power connections:
Three-phase (L1, L2, L3), Neutral (N) and Protective Earth (PE) connection for the rectifier
input.
Three-phase (L1, L2, L3), Neutral (N) and Protective Earth (PE) connection for the bypass
input ( N is INTERNALLY common for rectifier and bypass inputs).
Three-phase (L1, L2, L3), Neutral (N) and Protective Earth (PE) connection for the load
output.
Positive pole (+),Negative pole (-), Common midpoint/Neutral pole and Protective Earthing
(PE) connection for the external batteries.
24 red wires with an approximate length of 8 cm and 2 red wires with an approximate length
of 30 cm for BAT+.
7 red wires for BAT+ connection between Shelf 1 and Shelf 2; 4 blue wires for BAT N inside
Shelf 3.
Note!
It must be ensured that no line input source can accidentally be connected to the UPS
during installation.
Warning!
Installation may only be carried out by qualified technicians and in conformity with the
applicable safety standards.
5.2 Installation and wire connection diagram
Warning!
The UPS unit is not applicable to the IT power distribution system.