Vertiv Liebert ITA2-08KRT208, User Manual, Page: 30 / 74

Vertiv | Liebert
®
ITA2
™
User Manual | 24
1. Remove the conduit box cover to gain access to the input and output terminal blocks.
2. Remove the knockout plates and attach the conduits to the rear of the conduit box.
Dual-Input Hardwire Connections—Main Input
3. Using Figure 20 , remove the shorting busbars from the UPS input terminal block on Terminals 11, 12 and
13
Dual-Input Hardwire Connections—UPS Rectifier Input
4. With the shorting busbars removed from the UPS input terminal block, using Figure 21 , make these
connections:
• Phase A cable from the upstream feeder panel to UPS Terminal 11
• Phase B cable from the upstream feeder panel to UPS Terminal 13
• Phase C from the upstream feeder panel to UPS Terminal 15
• Neutral from the upstream feeder panel to UPS Terminal 17
• The safety equipment ground cable from the upstream feeder panel to UPS ground stud 10.
Dual-Input Hardwire Connections—UPS Bypass Input
5. With the shorting busbars removed on the UPS input terminal block, using Figure 21 , make these
connections:
• Phase A cable from the upstream feeder panel to UPS Terminal 12
• Phase B cable from the upstream feeder panel to UPS Terminal 14
• Phase C from the upstream feeder panel to UPS Terminal 16
• Neutral from the upstream feeder panel to UPS Terminal 18
• The safety equipment ground cable from the upstream feeder panel to UPS Ground Stud 10.
Dual-Input Hardwire Connections—UPS Output
The UPS has two output terminal block sections, one is always on and the other is
programmable/controllable. These instructions will list the always-on connections followed by the
programmable connections inside parentheses.
6. Using Figure 21 , make these connections:
• Phase A cable from UPS Terminal 4 (9) to the downstream distribution panel Phase A on the
panelboard main breaker
• Phase B cable from UPS Terminal 3 (8) to the downstream distribution panel Phase B on the panelboard
main breaker
• Phase C cable from UPS Terminal 2 (7) to the downstream distribution panel Phase C on the
panelboard main breaker
• Neutral cable from UPS Terminal 5 (6) to the downstream distribution panel neutral bus
• The safety equipment ground cable from UPS Ground Stud 1 to the downstream distribution panel
ground bus
7. Replace the conduit box cover and secure it.
Table 5 Shorting copper bar
Bypass Shorting Copper
Bar
Drawing
2-Pin Copper Bar