APC 5000 User Manual

34001813EN/AE

 - 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.

Connections must be made according to the diagram below:   

 

N L1 L2 L3

N L1 L2 L3

L1 L2 L3

N L1 L2 L3

N L1 L2 L3

L1 L2 L3

N L1 L2 L3

N L1 L2 L3

L1 L2 L3

Main earth

Main earth

Additional equipotential

bonding between units.