This Standard specifies definitions, test methods and acceptance criteria of composite insulators for A.C. overhead lines with a nominal voltage greater than 1000V.
This standard is applicable to composite insulators for use as suspension/tension line insulators, but it is to be noted that these insulators can occasionally be subjected to compression or bending, for example when used as phase-spacer insulators, they are designed primarily to resist bending loads. Line post insulator is not included in the application scope of this standard.
This standard deals with those composite insulators which include a “core” and “housing”. The core is usually made of resin-impregnated glass fibers. The housing can be manufactured from a variety of materials including elastomers (e.g. silicone, ethylene-propylene); resins (e.g. cycloaliphatic epoxy); or fluorocarbons (e.g. polytetraf luoroet hylene).
This standard does not include requirements dealing with the choice of insulators for specific operating conditions.
Foreword I
Introduction II
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification of Tests
5 Design Tests
6 Type Tests
7 Sampling Tests
8 Routine Tests
Appendix A (Informative) Principles of the Mechanical Tensile Load-Time Tests for Composite Insulators
Appendix B (Informative) Example of Two Possible Devices for Sudden Release of Load
Appendix C (Informative) Ageing Test under Operating Voltage and Simulating Weather Conditions
Appendix D (Informative) Summary of Tests
Appendix E (Informative) Technical Differences Between this Standard and IEC 6110:1992 and the Reasons
Appendix F (Informative) Comparison table between Clauses in this Standard and in IEC 61109:1992 and its Amendment 1 in
