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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 rectier

input.

Three-phase (L1, L2, L3), Neutral (N) and Protective Earth (PE) connection for the bypass

input ( N is INTERNALLY common for rectier 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 qualied 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.

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PowerWalker VFI 3/3 Series Guía de usuario Pagina 26