Siemens SIVACON Installation Manual - Page 20

Browse online or download pdf Installation Manual for Industrial Equipment Siemens SIVACON. Siemens SIVACON 34 pages. Distribution systems installation and maintenance instructions for power factor correction (pfc) capacitors

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Mounting

3.7 Inrush current limitation

3.7

Inrush current limitation

Switching LV PFC capacitors can cause high inrush currents of more than 200 times the rated

current, especially when they are connected in parallel to others that are already energized. This

may cause additional stress to contactors as well as to capacitors and reduce their life cycle.

Inrush currents have a negative effect on power quality, e.g. transients, voltage drop. MKK- and

MKP-designs feature high impulse handling capability, inrush current limitation is required, e.g.

contactors with pre-charging resistors for pre-loading of capacitors.

Installation and maintenance instructions for Power Factor Correction (PFC) capacitors

Installation Manual, 05/2022, L1V30884033A