IEC/IEEE 65700-19-03 Ed. 2.0 en:2025

Current Revision
Bushings for DC application

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Bushings for DC application

IEC/IEEE 65700-19-03:2025 applies to outdoor and indoor bushings of any voltage used on DC systems, of capacitance graded or gas insulated types for use as components of liquid-filled converter transformers and smoothing reactors, as well as air-to-air DC bushings.

It applies to both line commutated converter (LCC), as well as voltage source converter (VSC) technologies.

This document does not apply to the following:

  • cable terminations (potheads);
  • bushings for instrument transformers;
  • bushings for test power supplies;
  • bushings applied with gaseous insulation (other than air at atmospheric pressure) external to the bushing;
  • bushings for industrial application;
  • bushings for traction application;
  • bushings for distribution class transformers.

This second edition cancels and replaces the first edition published in 2014.

This edition constitutes a technical revision and includes the following significant technical changes with respect to the previous edition:

  • service experiences as well as established market requirements have been harmonized with existing IEC and IEEE standards, primarily IEC 60137, Insulated bushings for alternating voltages above 1 000 V, and IEEE Std C57.19.00™, IEEE Standard General Requirements and Test Procedures for Outdoor Power Apparatus Bushings;
  • inclusion of voltage source converter (VSC) technologies.
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