Table of Contents

      Foreword
1 General
      1.1 Scope and Object
      1.2 Normative References
      1.3 Definitions
      1.4 Values which characterise a post insulator of
             organic material
      1.5 Documentation
      1.6 Normal Service Conditions
2 General Requirements for Tests
      2.1 Classification of Tests
      2.2 Quality Assurance
      2.3 General Requirements for Electrical Tests
      2.4 Lightning Impulse Voltage Tests
      2.5 Power-Frequency Voltage Tests
      2.6 Standard Reference Atmospheric Conditions for
             Tests
      2.7 Correction Factors for Atmospheric Conditions
3 Type Tests
      3.1 General
      3.2 General Requirements for Electrical Type Tests
      3.3 Dry Lightning Impulse Withstand Voltage Test
      3.4 Dry Power-Frequency Withstand Voltage Test
      3.5 Partial Discharge Extinction Voltage Test
      3.6 Lightning Impulse Puncture Test
      3.7 Mechanical Failing Load Test
      3.8 Test for Deflection Under Load at Normal Ambient
             Temperature Conditions
      3.9 Test for Mechanical bending strength as a
             function of temperature
      3.10 Water Absorption Test
      3.11 Ageing and Humidity Test
      3.12 Flammability Test
      3.13 Temperature Cycle Test
4 Sample Tests
      4.1 General
      4.2 Verification of Dimensions
      4.3 Re-Test Procedure
5 Routine Tests
      5.1 General
      5.2 Visual Examination
      5.3 Mechanical Routine Test
      5.4 Electrical Routine Test and Partial Discharge
             Measurement
Annex A (informative) Tolerances of Form and Position

Abstract

Deals with post insulators of organic material for indoor electrical installations, and equipment working in air at atmospheric pressure on alternating current with a nominal voltage of more than 1000 V up to, but not including, 300 kV as specified by range I of IEC 60071-1, with a frequency of not more than 100 Hz. Does not apply to Composite insulators. The object is specify terms used, specify mechanical and electrical features of post insulators of organic materials and set out conditions to verify specified values of these features, as well as setting out testing procedures and acceptance criteria. Numerical values, or choices of insulators for specific conditions are not covered.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	SC 36C