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Level 01f
Internal battery feature (FC 3213)
The Internal Battery Feature (IBF) (FC 3213) is optional on the zEC12. In the event of input power
interruption to the system, the internal battery feature will provide sustained system operation for the
times listed in the following table.
Table 30. IBF holdup times
1 processor node
2 processor nodes
3 processor nodes
4 processor nodes
Note:
1. Single-line power cord pair.
2. Two-line power cord pair.
3. The holdup times in this table are valid for batteries 3 years old or less that have seen normal service life (2 or
less complete discharges per year) with the system input power at N+1 operation.
4. Batteries are only connected to the Bulk Power Regulators associated with the section 1 power cords.
5. These holdup times are estimates. Your particular battery holdup time for any given circumstance may be
different.
6. Holdup times vary depending on the number of BPRs installed. As the number of BPRs increases, the holdup
time also increases until the maximum number of BPRs is reached. Once six BPRs (three per side) are installed
no additional batteries are added so the time decreases from that point.
74
zEC12 IMPP
0
1
1
1
7.7 min
5.0 min
1
1
9.7 min
13.6 min
11.0 min
1
1
11.1 min
9.3 min
2
2
7.6 min
6.8 min
Number of I/O units
2
3
1
1
4.0 min
7.9 min
11.9 min
1
1
9.1 min
7.9 min
2
2
8.0 min
7.1 min
6.4 min
2
2
6.1 min
5.0 min
4.4 min
4
5
6
1
1
11.0 min
11.0 min
1
2
7.0 min
6.7 min
2
2
5.2 min
4.9 min
2
2
4.0 min
3.8 min
1
2
2
2
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