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DS/EN 60726 - DRY-TYPE POWER TRANSFORMERS Organization: DS
Date: 2003-06-20
Description: The following small and special dry-type transformers are not covered by this standard: - Single-phase transformers rated at less than 1 kVA and polyphase transformers rated at less than 5 kVA; - transformers having no windings with rated voltage Ur higher than 1000 V; - instrument transformers; transformers for static convertors; starting transformers; testing transformers; traction transformers mounted on rolling stock; welding transformers; voltage regulating transformers and small power transformers in which safety is a special consideration.
NG TS 3.06.16 - NATIONAL GRID TECHNICAL SPECIFICATIONS - PROTECTION FOR DOUBLE-WOUND TRANSFORMERS - ARCHIVED; ISSUE 2 Organization: NG
Date: 1999-04-01
Description: This Specification describes the functional and performance requirements for the protection of 400 and 275 kV oil-immersed supergrid double-wound transformers constructed in accordance with IEC 76 or equivalent. It does not include single phase transformers for railway traction supplies, for which reference should be made to Engineering and Technology.
IEC - IEC/TS 61639 - DIRECT CONNECTION BETWEEN POWER TRANSFORMERS AND GAS-INSULATED METAL-ENCLOSED SWITCHGEAR FOR RATED VOLTAGES OF 72,5 KV AND ABOVE - EDITION 1.0 Organization: IEC
Date: 1996-12-01
Description: Scope and objectThis technical report is applicable to the single-phase connection assemblies between gas-insulated metal-enclosed switchgear for rated voltages of 72,5 kV and above satisfying the requirements of IEC 517 and power transformers satisfying the requirements of IEC 76 and fitted with completely immersed bushings satisfying the requirements of IEC 137, one end of which is immersed in the transformer oil, and the other end in the insulating gas of the switchgear.
IEC - IEC 60289 - REACTORS - EDITION 2.0 Organization: IEC
Date: 1988-01-01
Description: Where reference is made to specific clauses and sub-clauses of the various parts of IEC Publication 76: Power transformers, it is to be understood that the editions are as follows:

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