1 Overview
  1.1 Scope
  1.2 Normative references
2 Usual and unusual service conditions
  2.1 Usual service conditions
  2.2 Unusual service conditions
3 Definitions
  3.1 General definitions
  3.2 Definitions relating to gas and vacuum tightness
4 Rating
  4.1 Rated maximum voltage (U[r])
  4.2 Rated insulation level
  4.3 Rated power frequency (f[r])
  4.4 Rated continuous current (I[r])
  4.5 Rated short-time withstand current (I[k])
  4.6 Rated peak withstand current (I[p])
  4.7 Rated short-time withstand current duration (t[k])
  4.8 Rated control voltage of operating devices and of auxiliary
       and control circuits (U[a])
  4.9 Rated control frequency of operating devices and auxiliary
       circuits
  4.10 Rated pressures of compressed gas supply for insulation,
       operation, and/or interruption
  4.11 Rated primary-bus fault breaking current (I[SF])
  4.12 TRV related to the rated primary-bus fault breaking current
  4.13 Rated transformer-limited fault breaking current (I[tf])
  4.14 Rated TRV related to the transformer-limited fault
       breaking current
  4.15 Rated short-circuit making current (I[m])
  4.16 Rated operating sequence
  4.17 Rated load switching current
  4.18 Rated capacitive switching currents
  4.19 Rated time quantities
  4.20 Mechanical operations endurance
  4.21 Rated static terminal load
  4.22 Rated ice-breaking ability
5 Design and construction
  5.1 Requirements for gases in circuit switchers
  5.2 Grounding of circuit switchers
  5.3 Auxiliary equipment
  5.4 Dependent power closing
  5.5 Stored energy closing
  5.6 Low- and high-pressure interlocking devices
  5.7 Nameplates
  5.8 Interlocking devices
  5.9 Position indication
  5.10 Creepage distances
  5.11 Gas and vacuum tightness
  5.12 Pressurized components
  5.13 Disconnect operation
6 Design tests
  6.1 General
  6.2 Dielectric tests
  6.3 Radio interference voltage tests
  6.4 Measurement of resistance of main circuit
  6.5 Temperature-rise tests
  6.6 Short-time withstand current and peak withstand current tests
  6.7 Outdoor enclosure performance
  6.8 Gas, vacuum and liquid tightness tests
  6.9 Electromagnetic compatibility (EMC) tests
  6.10 Mechanical and environmental tests
  6.11 Test to prove operation under severe ice conditions
  6.12 Static terminal load test
  6.13 Miscellaneous provisions for making, breaking, and
       switching tests
  6.14 Test circuits for short-circuit making and breaking tests
  6.15 Short-circuit test quantities
  6.16 Short-circuit test procedure
  6.17 Basic short-circuit test duties
  6.18 Single-phase tests
  6.19 Capacitive current-switching tests
  6.20 Pressurized components containing insulating gases with
       absolute pressures greater than 208 kPa
7 Routine tests
  7.1 Dielectric test on auxiliary and control circuits
  7.2 Measurement of resistance of main circuit
  7.3 Tightness test
  7.4 Design and visual checks
  7.5 Mechanical operating tests
  7.6 Porcelain and nonceramic components with absolute
       pressures greater than 208 kPa
Annex A (informative) Bibliography