Transcription of Capacitor reforming guide - ABB
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Capacitor reforming guide - ABB
ACS800. Capacitor reforming guide Capacitor reforming guide ACS800. Code: 3 BFE64059629 REV C EN. EFFECTIVE: FIDRI\EIF200. PDM code: 2006 ABB Oy. All rights reserved. 3. Table of contents Table of Capacitor reforming guide ..4. How to check the converter reforming time ..4. Converters stocked (non-operational) less than 2 Converters stocked (non-operational) for 2 years and over ..5. Method 2 A: ..5. Method 2 B: ..6. Table of contents 4. Capacitor reforming guide Introduction This guide applies to single drive frequency converters and multidrive inverter units, referred as converters later in this document. Converter DC link capacitors need to be reformed (re-aged) if the converter has been non-operational for more than one year. Without reforming capacitors may get damaged when the converter starts to operate. It is recommended to reform the capacitors once a year. Note: Ensure that converter is clean and dry (no condensation) before starting the reforming .
Reforming time The intermediate circuit of the converter is connected to its nominal voltage for the reforming time to “wake up” the capacitors. The reforming time required depends on how long the converter has been stocked (non-operational). Capacitor reforming guide
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