IEEE C37.36b-1990

1 Scope
2 Introduction
3 Definitions
4 Suggested practices
4.1 General
4.2 Unloaded transformer switching
4.3 Bus, line, and insulated cable switching
5 Bibliography
Tables
1 Suggested guide for interrupting currents with
     vertical-break air switches equipped with arcing
     horns and mounted in horizontal-upright position
     (based on minimum phase clearance to grounded
     objects, calculated arc reach, and maximum
     operating voltage)
2 Suggested guide for interrupting currents with
     vertical-break air switches equipment with arcing
     horns and mounted in horizontal-upright position
     [based on horn-gap switch-phase spacing (centerline
     to centerline), calculated arc reach, and maximum
     operating voltage]
Appendices
A Calculation method
B Sample calculations
Appendix Figures
B1 Outdoor vertical-break air switch - horizontal-
     upright mounting

Provides air switch users with a determination means for the magnitude of excitation as well as resistive and capacitive currents which can be successfully interrupted with horn-gap, vertical-break air switches in outdoor locations mounted in the normal horizontal-upright position and not equipped with interrupting aids.