2. Getting involved
3. Standards Committees
4. DKE

DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE

Overview

This part of IEC 62271 is applicable to single- and three-phase direct connections between gas insulated metal-enclosed switchgear (GIS) for rated voltages above 52 kV and transformer arrangements to establish electrical and mechanical interchange ability and to determine the limits of supply for the transformer connection. Direct connections are immersed on one end in the transformer oil or insulating gas and on the other end in the insulating gas of the switchgear. Transformer arrangements are single-phase transformers with single-phase enclosed arrangement, three-phase transformers with three single-phase enclosed arrangements or three-phase transformers with a three-phase enclosed arrangement with three transformer bushings. The connection satisfies the requirements of IEC 62271-203 for gas-insulated metal-enclosed switchgear, IEC 60076 for power transformer and IEC 60137 for completely immersed bushings. For the purpose of this document the term "switchgear" is used for "gas-insulated metal-enclosed switchgear" and the term "transformer" is used for "power transformer". The standard differs from DIN EN 62271-211 (VDE 0671-211):2014-12 and DIN EN 62271-211 Corrigendum 2 (VDE 0671-211 Corrigendum 2):2021-11 as follows: a) re-numbering of clauses according to IEC 62271-1:2017; b) Clause 3: updating definition about bushing (3.1), updating some pressure definitions (3.6, 3.7, 3.8, 3.9), rewording definition about proctor density (3.11), new term very-fast-front overvoltage (3.12); c) Clause 5 (former Clause 4): add a subclause 5.1 General, according to IEC 62271-1:2017 and IEC 62271-203:2022; 1) subclause 5.5: new first paragraph, rewording second paragraph; 2) subclause 5.8: modify the term "Rated duration of thermal short-time current" of the bushing; d) Clause 6 (former Clause 5): restructure and rewording of subclauses: 1) 6.1 (former 5.3): requirements about gas and vacuum tightness of the transformer bushing; 2) 6.3 (former 5.2): harmonization with IEC 62271-203:2022 about typical maximum pressure in service for SF6, other gases and gas mixtures; 3) 6.4 (former 5.8), rewording 4) 6.5 (former 5.1), some rewording and modification; 5) 6.6 (former 5.4), some rewording, updated references; 6) 6.7 (former 5.5), some rewording; 7) 6.8 (former 5.6), some rewording; 8) 6.9 (former 5.7), slight rewording; e) Clause 7 (former Clause 6) "Type tests": some rewording and clarifications about references; f) Clause 8 (former Clause 7) "Routine tests": 1) 8.2 (former 7.2): add a paragraph about SF6-mixtures and other gases than SF6; 2) 8.3 (former 7.3): update reference to relevant on-site test according to IEC 62271-203:2022; g) Clause 9 "Guide to the selection of switchgear and controlgear" (new): informative, to have a reference to IEC 62271-203:2022; h) Clause 11 (former 10): updated headline and updated reference according to IEC 62271-1:2017; i) new Clauses 12 "Safety" and 13 "Environmental aspects: Adding of references to safety and environmental aspects"; j) correction of errors in Corrigendum 2 of IEC 62271-211:2017; k) modified orientation of Figure 1 to Figure 4 for easier reading of the tables.

Responsible national committee

DKE/UK 432.2 - Typgeprüfte Hochspannungs-Schaltanlagen