Concepts for on-site HV testing of GIS after installation, extension, retrofit or repair

This Technical Brochure presents concepts for on-site HV testing of gas-insulated switchgear after initial installation, repair, retrofit or extension. It reviews testing requirements in worldwide (inter)national standards and collects various return of experience from both OEMs and users for many different on-site HV testing scenarios. Technical drivers for reliability assurance and regulatory requirements are discussed and detailed activities before and after mobilisation to site are highlighted to help stakeholders with limited experience in the planning and layout design of their substation and boundaries.