PARALLEL INSTALLATION
WA RNING
Only qualified service personnel (such as a licensed electrician) should perform the UPS installation and initial startup. Risk of electrical shock.
To hardwire the parallel system:
1.Verify that the electrical connections to the installation site have been properly installed.
2.A
Compare the circuit breaker ratings and wire sizes to the ones in the following wiring table:
Table 1. Circuit Breaker Ratings
UPS Capacity | Input Circuit Breaker Rating | Minimum Wire Size* |
|
|
|
|
|
8 kVA | 60A | 4 AWG (21.2 mm2) | |
10 kVA | 80A | 3 AWG (26.7 mm2) | |
12 kVA | 100A | 2 AWG (33.6 mm2) | |
15 kVA | 100A | 2 AWG (33.6 mm2) |
*Use only
NOTE To accommodate the feature of easy system expandability, it is recommended that initial installation of the Powerware 9155 UPS contain wiring to support the maximum capacity of the UPS cabinet.
3.Switch off utility power to the distribution point where the parallel tie cabinet and UPSs will be connected. Be absolutely sure there is no power.
4.Determine your equipment’s grounding requirements according to your local electrical code.
14 | EATON Powerware® 9155 Parallel UPS |