Figure 3-9. 93Pm External Parallel Wire Length - Eaton 93PM UPS Installation And Operation Manual

UPS Installation Plan and Unpacking
Bypass Input to UPS Units
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%.

Figure 3-9. 93PM External Parallel Wire Length

3-14 Eaton 93PM UPS (20–50 kW, 480V Four Wire – 50 kW Frame) Installation and Operation Manual P-164000540—Rev 4
1A
2A
3A
4A
UPS 1
Battery
UPS 2
Battery
UPS 3
Battery
UPS 4
Battery
Output from UPS Units
1B
2B
3B
4B
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