The conditions of gas tightness of gas insulated switchgear according to standards versus warranty aspects
08 August 2018
Assuming that high-voltage1 gas insulated switchgear is designed and tested in accordance to the IEC 62271 series International Standards, IEC 62271-1 defines specific requirements (shown in the extract here below) in terms of gas tightness, depending on the selected tightness design: sealed pressure system or closed pressure system. In principle, the statements made in this document are also applicable to other high-voltage equipment not subject to the IEC 62271 series of standards (for example, gas-insulated high-voltage transformers – IEC 61869-1). Depending on the selected tightness concept, a distinction is made between closed pressure systems or sealed pressure systems.
