| Description: The revision of this guide will update
the information. This guide provides
information of special relevance to the
planning, design, testing, installation,
operation and maintenance of gas-insulated
substations (GIS) and equipment. This guide
is intended to supplement IEEE Std.
C37.122. In general this guide is applicable
to all GIS above 52 kV.
However, the importance of the topics
covered varies with application category. For
example, issues related to advanced field
test techniques and very fast transients (VFT)
are of particular interest for extra-high voltage
(EHV) GIS (345 kV and above) and are of
lesser importance at lower levels.
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