Equipment Failure Rates: Recloser
E31-099A to E31-200
Equipment failure rates, MTBF, MTTR, and downtime statistics for electrical and mechanical plant equipment. Primary data from the USACE PREP reliability database (IEEE Std 3006.8-2018 Table 2), covering ~280 equipment classes. Supplemental data from IEEE motor and transformer surveys.
| equipment type | class code | description | failure rate per year (failures/year) | failures (count) | mdt hours (h) | mtbf hours (h) | mttm hours (h) | mttr hours (h) | standard | survey | unit years (unit-years) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Recloser | E31-099A | Recloser (interrupter), | 0.004023 | 14 | 5 | 2,177,511 | 5 | 5 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 3,480 |
| Recloser | E31-100 | Recloser (interrupter), | 0.006669 | 13 | — | 1,313,572 | — | — | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 1,949.4 |
| Recloser | E31-200 | Recloser (interrupter), | 0.019734 | 58 | 8 | 443,901 | 8 | — | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 2,939.1 |
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