NBN EN 61264 : 1999

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