APC galaxy 9000 User Manual

34006451EN/AC

 - Page 19

installation

2.7 Connection of power circuits

Before making connections, check that switches Q1, Q4S, Q3BP and Q5N are in the "open" position (toggle opposite the "O" 
mark).

– in the case of parallel-connected rectifier-inverter cubicles with SSC, switches Q4S and Q3BP are not included and 
mains 2 is connected to the Static Switch Cubicle. The other connections are the same;

– for modular UPSs with an external maintenance bypass, switch Q3BP must be locked open;

– the power cables for the connections between cubicles are not supplied;
– open the doors and remove the lower terminal shields (secured by screws to the cubicle chassis) of the rectifier-inverter 

and Static Switch Cubicles;

– connect the cables shown in heavy lines in the wiring diagrams shown previously to the terminals specified in the figures 
below;

– each cubicle must be earthed;

– the routing of the power cables is shown in the figures;
– the auxiliary wiring is routed in troughs located nearby (not shown in the drawings);

– outside the cubicles, separate the auxiliary wiring from the power cables;

– all the cubicles must be interconnected for earthing, forming a mesh which is itself connected to the building structure and 
earthing electrode;

– the connection drawings hereafter show the cubicles with doors open and terminal shields removed.

Cables connected by lugs to 100 x 8 mm copper terminals and 13 mm diameter holes.

Height of connections relative to floor:
– mains 1: 450 mm;

– battery: 480 mm.

transformer

cable tie bar

rectifier

charger

inverter

stack

inverter

stack

inverter

stack

spacing

uprights

cable

tie bar

connection

from below

trough (if applicable)

FHCZ

board

on

off