专利内容由知识产权出版社提供
专利名称：Current transmission system for HVDC
including a solid insulator having a surfacecoating of resin containing chromium oxideor iron oxide
发明人：Arne Hjortsberg,Goran Holmstrom,Erik
sterlund
申请号：US06/918495申请日：19861014公开号：US04688142A公开日：19870818
摘要：A system for HVDC transmission comprises a conductor, stressed by d.c.voltage, which is insulated from a surrounded grounded casing by pressurized SF.sub.6gas and along part of its length by at least one solid insulator supporting the conductorin the casing and in contact with the gas. By designing the solid insulator as a core of solidinsulating material and a coating, provided thereon, with a high surface resistance, it ispossible considerably to reduce the dimensions of the casing. The coating consists of aresinous binder containing a powdered filler in the form of chromium oxide or iron oxide,or a mixture of these substances. The coating preferably has a surface resistancebetween 10. sup.12 and 10.sup.18 ohm/□ at an electric field strength of 1 kV/mm.
申请人：ASEA AKTIEBOLAG
代理机构：Watson Cole Grindle & Watson
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