Foreword
1 General
30 Definitions and requirements for high-voltage air
switches, insulators and bus supports
31 Apparatus insulators for use with high-voltage air
switches
32 Schedules of preferred ratings, manufacturing
specifications and application guide for high-
voltage air switches, bus supports and switch
accessories
33 Rated control voltages and their ranges for high-
voltage air switches
34 Test code for high-voltage air switches
35 Guide for the installation, operation and
maintenance of power switching equipment
36 Outdoor substations (Structure, pole-top frames, and
other parameters)
Appendix
A Tables of electrical, mechanical, and physical
characteristics of indoor porcelain switching
equipment