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EATON Powerware
®
9155 Parallel UPS (8–15 kVA) User’s Guide S 164201592 Rev C www.powerware.com
35
Chapter 7 Extended Battery Module Installation
NOTE A maximum of 22 battery strings can be installed in one configuration, including
UPS batteries (4 EBM-64 models or 3 EBM-96 models). UPS-32 models contain 2 strings;
UPS-64 models contain 4 strings; EBM-64 models contain 4 strings; and EBM-96 models
contain 6 strings.
NOTE For non-seismic installations, you MUST install the stabilizing bracket on all 3-high
cabinets. The stabilizing bracket is optional for 2-high cabinets.
NOTE In a parallel system, each UPS should have the same number of Extended Battery
Modules (EBMs) to ensure equivalent runtimes.
To install the optional EBM:
1. Position the EBM adjacent to the next cabinet.
2. Verify that all battery circuit breakers are in the OFF position (see
Figure 26).
3. Remove the two ground straps from the EBM rear panel.
4. Install one ground strap between the UPS and EBM rear panels as
shown in Figure 26.
5. If additional EBMs are installed, attach another ground strap
between the first and second EBM as shown in Figure 26. Repeat
for each additional EBM.
6. Plug the EBM cable into the UPS battery connector.
7. If additional EBMs are installed, plug the EBM cable of the second
cabinet into the battery connector on the first EBM. Repeat for each
additional EBM.