scope:

This international standard is applicable to single and three phase arrangements (singlephase transformer with single-phase enclosed arrangement, three-phase transformer with three single-phase enclosed arrangements or three-phase transformer with a three-phase enclosed arrangement with three transformer bushings) between gas-insulated metalenclosed switchgear for rated voltages above 52 kV to establish electrical and mechanical interchange ability and to determine the limits of supply of the transformer connection which is immersed on one end in the transformer oil or insulating gas and on the other end in the insulating gas of the switchgear. The connection satisfies the requirements of IEC 62271-203 for gas-insulated metal-enclosed switchgear, IEC 60076 for power transformer requirements of and IEC 60137 for completely immersed bushings. For the purpose of this international standard the term "switchgear" is used for "gas-insulated metal-enclosed switchgear".