ANSI C37.58 : 1990

Foreword
1 Scope
2 Referenced and Related Standards
  2.1 Referenced American National Standards
  2.2 Related American National Standards
3 General Test Conditions
4 Conformance Test Requirements
  4.1 General
  4.2 Test requirements
  4.3 Test arrangement
      4.3.1 Switchgear vertical section
      4.3.2 Test enclosure
      4.3.3 Grounding of test enclosures or switchgear
             vertical section
  4.4 Commonalities of design and test
  4.5 Lightning impulse withstand test
      4.5.1 General
      4.5.2 Description of test
      4.5.3 Procedures
      4.5.4 Number of tests
      4.5.5 Performance
  4.6 Continuous current test
      4.6.1 Test arrangement
      4.6.2 Continuous current test
      4.6.3 Test area conditions
      4.6.4 Ambient air temperature limits
      4.6.5 Measurement of ambient air temperature
      4.6.6 Measurement of equipment temperature
      4.6.7 Duration of tests
      4.6.8 Frequency of test current
      4.6.9 Copper conductors for use in continuous current
             tests
      4.6.10 Performance
  4.7 Short-circuit tests
      4.7.1 Test arrangements
      4.7.2 Momentary withstand current test
      4.7.3 Short-time withstand current test
  4.8 Mechanical endurance test
      4.8.1 Test arrangement
      4.8.2 Power operation
      4.8.3 Manual operation
      4.8.4 Mechanical endurance test requirements
      4.8.5 Performance
  4.9 Load-switching current test (if rated)
      4.9.1 Test arrangement
      4.9.2 Grounding
      4.9.3 Test voltage and current
      4.9.4 Load-switching current test circuit
      4.9.5 Performance
5 Treatment of Failures
6 Product Retest Requirements
Tables
Figures

Applies to the conformance test procedure for AC medium-voltage switches rated 1000 volts as designed, manufactured, and tested in accordance with ANSI/IEEE C37.20.4.