SN EN 61264 : 1998

INTRODUCTION<br>1 Scope and object<br>2 Normative references<br>3 Definitions<br>4 General recommendations for design and construction<br>&nbsp;&nbsp;&nbsp;&nbsp;4.1 Purpose<br>&nbsp;&nbsp;&nbsp;&nbsp;4.2 Rules for design<br>5 General requirements for tests<br>&nbsp;&nbsp;&nbsp;&nbsp;5.1 Classification of tests<br>&nbsp;&nbsp;&nbsp;&nbsp;5.2 General requirements for pressure tests<br>&nbsp;&nbsp;&nbsp;&nbsp;5.3 General requirements for bending tests<br>6 Type tests<br>&nbsp;&nbsp;&nbsp;&nbsp;6.1 General<br>&nbsp;&nbsp;&nbsp;&nbsp;6.2 Pressure test<br>&nbsp;&nbsp;&nbsp;&nbsp;6.3 Bending test<br>7 Sample tests<br>&nbsp;&nbsp;&nbsp;&nbsp;7.1 Selection and number of test pieces<br>&nbsp;&nbsp;&nbsp;&nbsp;7.2 Tests<br>&nbsp;&nbsp;&nbsp;&nbsp;7.3 Re-test procedure<br>&nbsp;&nbsp;&nbsp;&nbsp;7.4 Verification of dimensions<br>&nbsp;&nbsp;&nbsp;&nbsp;7.5 Control of the roughness of ground parts<br>&nbsp;&nbsp;&nbsp;&nbsp;7.6 Mechanical test (for assembled hollow insulators)<br>8 Routine tests<br>&nbsp;&nbsp;&nbsp;&nbsp;8.1 General<br>&nbsp;&nbsp;&nbsp;&nbsp;8.2 Mechanical tests<br>&nbsp;&nbsp;&nbsp;&nbsp;8.3 Other tests<br>9 Documentation<br>&nbsp;&nbsp;&nbsp;&nbsp;9.1 Marking<br>&nbsp;&nbsp;&nbsp;&nbsp;9.2 Certificates<br>Annexes<br>A (informative) Tolerances of form and position<br>B (informative) Bending moment equivalent to the design<br>pressure<br>C (informative) Bibliography<br>ZA Normative references to international publications with<br>their corresponding European publications

Applicable to hollow insulators made from ceramic material, with their fixing devices, to be used with a permanent gas pressure in excess of 50 kPa gauge with an internal volume equal to or greater than 1 I(1000cm x cm x cm).