| Description This
standard establishes ratings and requirements for planning, design,
testing,
installation, and operation of gas-insulated substations (GIS) for
alternating-current
applications using equipment rated above 52
kV. Typical installations are assemblies of
specialized gas- insulated devices such as
circuit-breakers, switches, bushings, buses,
instrumentation, and gas-insulating system. It
does not include certain items that may be
directly connected to gas-insulated
substations, such as power transformers and
protective relaying.
|