This standard BS EN 62199:2004 Bushings for D.C. application is classified in these ICS categories:
29.080.20 Bushings
Applies to outdoor and indoor bushings of any voltage used on d.c. systems, of capacitance graded or gas insulated types for use as components of oil-filled converter transformers and smoothing reactors, as well as air-to-air d.c. bushings.
