Eaton 9395 - Figure 4-5. Distributed Bypass Wire Length

UPS SYSTEM INSTALLATION
Eaton 9395 UPS (225–275 kVA) Installation and Operation Manual S 164201683 Rev 3 www.eaton.com/powerquality
4-10
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 4‐5. Distributed Bypass Wire Length