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6.5 Recommended Spare Parts
Spare parts are important for quick recovery of important facilities from faults.
When parts in the equipment have broken down, spare parts are required to shorten the mean time to repair
(MTTR). Since replacement of individual parts takes much time, it is recommended to replace by equipment.
Recommended spare parts for TMdrive-30 are shown in Table 6.5.1, and spare parts for TMdrive-P30 are
shown in Table 6.5.2 and Table 6.5.3.
The recommended spare rate and minimum amount can serve as the references for the minimum number of
spare parts relative to the total number of parts used. It is recommended to decide the amount according to the
number of parts used.
For the inverter stack, the following measures are taken to prevent trouble when spare parts are replaced. The
same applied to the multi-stage equipment.
•
Replace the failing inverter stack with a spare inverter stack (by equipment) and restart the operation (to
minimize MTTR).
•
Then, replace the failing parts of the failing inverter stack with spare parts.
When an IGBT has broken down, its replacement requires a work environment which will prevent electrostatic
destruction. Please contact our factory to request for repair service.
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