IEC 62231:2006

FOREWORD
INTRODUCTION
1 Scope and object
2 Normative references
3 Terms and definitions
4 Identification
5 Environmental conditions
6 Information on transport, storage and installation
7 Classification of tests
   7.1 Design tests
   7.2 Type tests
   7.3 Sample tests
   7.4 Routine tests
8 Design tests
   8.1 General
   8.2 Tests on interfaces and connections of end fittings
   8.3 Assembled core load tests
   8.4 Tests on shed and housing material
   8.5 Tests on the core material
9 Type tests
   9.1 Verification of dimensions
   9.2 Electrical tests
   9.3 Mechanical tests
10 Sample tests
   10.1 General rules
   10.2 Verification of dimensions (E1 + E2)
   10.3 Galvanizing test (E1 + E2)
   10.4 Verification of the specified mechanical loads (E1)
   10.5 Re-testing procedure
11 Routine tests
   11.1 Identification of the station post insulator
   11.2 Visual examination
   11.3 Tensile load test
Annex A (informative) Notes on the mechanical loads and tests
Annex B (informative) Determination of the equivalent bending
                      moment caused by combined cantilever and
                      compression (tension) loads
Annex C (informative) Example of torsion load test arrangement
Annex D (normative) Tolerances of form and position
Annex E (informative) Notes on the compression and buckling test
Bibliography

This International Standard applies to composite station post insulators consisting of a load bearing cylindrical insulating solid core made of resin impregnated fibres, a housing (outside the insulating solid core) made of elastomer material (e.g. silicone or ethylene-propylene) and end fittings attached to the insulating core. Composite station post insulators covered by this standard are subjected to cantilever, torsion, tension and compression loads. They are intended for substations with a.c. voltages greater than 1 000 V up to 245 kV.