Siemens has completed an investigation of the reported event.No system failure or malfunction and no non-conformity were identified.The investigation showed that an electrical shock by line power could be excluded.The part touched (plastic cover) is insulated and no metal parts are reachable and therefore, no current flow is possible.Furthermore, the system has been checked on site and all ground resistance tests have passed successfully.The system works as specified.As no conductive materials have been touched and the system works as specified, no electrical shock could have been occurred.The shock reported is most likely an electrostatic discharge which can happen if a person is wearing synthetics.The manufacturer is not considering further actions resulting from this event as no systematic error has been recognized.
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