Forming The Dc Link Capacitors - Siemens SINAMICS S120 Equipment Manual
Chassis liquid cooled power units
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Also See for SINAMICS S120:
- Function manual (1094 pages) ,
- Diagnostic manual (947 pages) ,
- Manual (848 pages)
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9.5
Forming the DC link capacitors
Description
If the Power Module, Basic Line Module, Active Line Module, and Motor Module have not
been used for more than two years, the DC link capacitors must be reformed. If this is not
carried out, the units could be damaged when the DC link voltage is connected under load.
If the cabinet is commissioned within two years of its date of manufacture, the DC link
capacitors do not need to be re-formed. The date of manufacture can be taken from the
serial number on the rating plate.
Note
It is important that the storage period is calculated from the date of manufacture and not from
the date that the equipment was shipped.
Rating plate
Figure 9-20
Chassis Liquid Cooled Power Units
Manual, (GH7), 01/2011, 6SL3097-4AM00-0BP1
Rating plate using a Motor Module as example
Maintenance and servicing
9.5 Forming the DC link capacitors
291
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