Worked on the e2nIEE/pandapower repository to address a runtime stability issue affecting OC Relay string representations. Focused on Python-based bug fixing and refactoring, the developer corrected an AttributeError by updating the OCRelay class to display the relay index using switch_index rather than name. This targeted change improved reliability for automation and dashboard integrations that depend on accurate OC Relay outputs. The update included thorough documentation, with a changelog entry to ensure traceability of the fix. No new features were introduced during this period, but the work enhanced code hygiene and reduced downstream debugging effort for users and maintainers.