IEC 61950:1997 Cable Management Systems - Specification for Conduit Fittings for Electrical Installations for Extra-Heavy Duty Metal Conduit (Edition 1.0)
This International Standard specifies requirements for fittings, including cast metal boxes and conduit bodies, used with EHDRS (extra heavy duty rigid steel) conduit conforming to IEC 60981.
IEC 61950:1997 history
2019IEC 61950:2019 Cable management systems - Specifications for extra-heavy-duty electrical steel conduit fittings and accessories
2007IEC 61950:2007 Cable management systems - Specifications for conduit fittings and accessories for cable installations for extra-heavy duty electrical steel conduit
1997IEC 61950:1997 Cable Management Systems - Specification for Conduit Fittings for Electrical Installations for Extra-Heavy Duty Metal Conduit (Edition 1.0)