APC G5USV040P005SAIO Scheda Tecnica Scaricare il pdf (Pagina 24)

34001813EN/AF - Page 24

2. Installation

2.8 Connection of power cables for parallel UPS units

Equipotential bonding between parallel-connected units

Connect the exposed conductive parts (ECP) of the parallel-connected UPS units using an additional earthing cable (not

supplied) with the following characteristics:

- size equivalent to that of the supply cables,

- as short as possible.

Connection of earth cable and tying of cables

Connections must be made according to the diagram below:

N L1 L2 L3N L1 L2 L3L1 L2 L3 N L1 L2 L3N L1 L2 L3L1 L2 L3N L1 L2 L3N L1 L2 L3L1 L2 L3

Main earth

Additional equipotential

bonding between units.

UPS 1 UPS 3

UPS 2

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APC G5USV040P005SAIO Scheda Tecnica Pagina 24