Operation principle and hardware description 57
Inverter module label
The type designation label of the inverter module includes the ratings, valid markings, a
type designation and a serial number. The module label is attached to the front panel of
the inverter module. Example labels are shown below.
No. Description
1 Serial number. The first digit of the serial number refers to the manufacturing plant. The next
four digits refer to the unit’s manufacturing year and week, respectively. The remaining
digits complete the serial number so that there are no two modules with the same number.
2 Type designation
3 Valid markings
4 Ratings of inverter module
12
3
4
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