Forming The Dc Link Capacitors - Siemens SINAMICS S120 Manual

Cabinet modules liquid cooled

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Forming the DC link capacitors

The DC link capacitors must be reformed if Basic Line Modules, Active Line Modules and

Motor Modules have not been used for more than two years. If this is not carried out, the

units could be damaged after the DC-link voltage is applied 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.

Storage period

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

Cabinet Modules liquid cooled

Equipment Manual, 04/2020, A5E37067587A

Rating plate using an Active Line Module as example

Maintenance and servicing

7.6 Forming the DC link capacitors