IEC 61462:2007

FOREWORD
INTRODUCTION
1 Scope and object
2 Normative references
3 Terms and definitions
4 Relationships of mechanical loads
   4.1 Loads from outside the insulator
   4.2 Pressures
5 Marking
6 Classification of tests
   6.1 Design tests
   6.2 Type tests
   6.3 Sample tests
   6.4 Routine tests
7 Design tests
   7.1 General
   7.2 Tests on interfaces and connections of end fittings
   7.3 Tests on shed and housing material
   7.4 Tests on the tube material
8 Type tests (only mechanical tests)
   8.1 General
   8.2 Test specimens
   8.3 Preparation of the test specimen
   8.4 Internal pressure test
   8.5 Bending test
9 Sample tests
   9.1 Selection and number of insulators
   9.2 Testing
   9.3 Verification of dimensions
   9.4 Mechanical tests
   9.5 Galvanizing test
   9.6 Check of the interface between end fittings and
        the housing
   9.7 Re-test procedure
10 Routine tests
   10.1 General
   10.2 Visual examination
   10.3 Routine pressure test
   10.4 Routine mechanical test
   10.5 Routine tightness test
11 Documentation
Annex A (normative) Tolerances of form and position
Annex B (informative) General recommendations for design
                      and construction
Annex C (informative) Principles of damage limit and use of
                      reversible and irreversible strain caused
                      by internal pressure and/or bending loads
                      on composite hollow insulator tubes
Bibliography

This International Standard applies to composite hollow insulators consisting of a load-bearing insulating tube made of resin impregnated fibres, a housing (outside the insulating tube) made of elastomeric material (for example silicone or ethylene-propylene) and metal fixing devices at the ends of the insulating tube. The object of this standard is: To define the terms used; to prescribe test methods; and to prescribe acceptance criteria.