Powerware 9395 UPS and Plus 1 UPS 650825 kVA - Manual (Page 68)

UPS SYSTEM INSTALLATION
EATON Powerware ® 9395 UPS (650–825 kVA) Installation and Operation Manual S 164201725 Rev 2 www.powerware.com 4−22
NOTE Required parallel system wiring length must be equal to ensure approximately equal current sharing when in Bypass mode. For proper
operation the following must be true:
1A = 2A = 3A = 4A
1B = 2B = 3B = 4B
NOTE Any difference in wire length will result in decreased capacity of the UPS system while on bypass. For example, a 10% difference
between the longest and shortest wire lengths will result in a decrease in bypass capacity of 10%.
Bypass Input to UPS Units
UPS 1
Battery
UPS 2
UPS 3
UPS 4
Output from UPS Units
Battery
Battery
Battery
1A
2A
3A
4A
1B
2B
3B
4B
Figure 4-19. Distributed Bypass Wire Length