Eaton 93PR - Support Common Battery; Figure 4-2: Separate Battery Configurations

Eaton 93PR 500 kW UPS
User's and Installation Guide 37
4.2.1. Support Common Battery
Eaton 93PR modular UPS support common or separate battery configurations among frames. The flexible battery
setting will benefit the customer to save cost or optimize site planning design.
For separate battery configuration, each 93PR frame connect to separate battery bank. And the battery settings
between frames could be different but the backup time of whole UPS system is limited by the minimum battery bank.
93PR-600
UPS 1
93PR-600
UPS 2
93PR-600
UPS 3
93PR-600
UPS 4
External
Battery
Cabinet
1
External battery
switch
External battery
switch
External battery
switch
External battery
switch
Load
External
Battery
Cabinet
2
External
Battery
Cabinet
3
External
Battery
Cabinet
4
Figure 4-2: Separate Battery Configurations
For common battery configuration, now support 2/3/4 frames paralleled and connect to a common battery
bank. For common battery configuration. Charging and discharging batteries are shared evenly among the
UPMs. And there is no limitation how to allocate UPM among the frames. Which means each frame may
contain different numbers of UPM. But charging and discharging power is equal for all UPMs.
It is recommended using separate battery breaker with auxiliary contactor even for common battery and each
battery breaker’s aux is connected to the own frames’ TB.