Figure 9: Main Power Terminals At The Bottom Rear Of The Centric; Table 4: Key To Figure 9 - Gamatronic Centric 3X480 VAC Installation Manual

4.3.4.3 CONNECTING THE CENTRIC TO THE ELECTRICAL BOARD
When connecting the electrical board to the Centric, a torque of 25 to 30 Nm is recommended on the
Centric side.
Suitably rated circuit breakers must be installed between the Centric and the electrical board.
A suitably rated fuse must be installed on the rectifier ac input line.
Refer to Figure 10 or Figure 11 for system connections, and Table 5 and Table 6 for circuit breaker
recommendations.
See Chapter 7 for a discussion of the issue of circuit breaker selectivity.
Connection of the Centric UPS to the electrical board must be performed only by a licensed
electrician experienced with similar systems.
Warning: If your Centric is configured for "4-wire + Ground" infrastructure
(see section 4.1) and two separate input lines are used for rectifier and bypass
input (as in Figure 10 and Figure 11), the Neutral line must be shared.
Also for "4-wire + Ground" infrastructure, see Figure 12 and the notice about
the surge arrestor, on page 19.

Figure 9: Main power terminals at the bottom rear of the Centric

I D
TEM ESCRIPTION
1 Ac output terminals (L1, L2, L3).
2 Ac input terminals (L1, L2, L3).
3 Bypass ac input terminals (L1, L2, L3).
Neutral bus bar. For all systems, connect battery Midpoint lines here.
4
If your system is configured for a "4-wire + Ground" environment (see
section 14.1), also connect the ac Neutral lines here.
5 Protective Earth (Ground) bus bar.
16
G E
AMATRONIC LECTRONIC

Table 4: Key to Figure 9

I L .
NDUSTRIES TD
Centric 3x480 Vac, Installation Guide, rel. 2.2