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BS EN IEC 62772:2023 2024

BS EN IEC 62772:2023 2024

$167.15

Composite hollow core station post insulators with a.c. voltage greater than 1 000 V and d.c. voltage greater than 1 500 V. Definitions, test methods and acceptance criteria

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BSI 2024 36
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This International Standard applies to composite hollow core station post insulators consisting of a load-bearing insulating tube (core) made of resin impregnated fibres, insulating filler material (solid, liquid, gaseous – pressurized or unpressurized), a housing (outside the insulating tube) made of polymeric material (for example silicone or ethylene-propylene) and fixing devices at the ends of the insulating tube. Composite hollow core station post insulators as defined in this standard are intended for general use in substations in both, outdoor and indoor environments, operating with a rated AC voltage greater than 1 000 V a.c. and a frequency not greater than 100 Hz or for use in direct current systems with a rated voltage greater than 1 500 V.d.c. The object of this standard is: to define the terms used; to prescribe test methods; to prescribe acceptance criteria. All the tests in this standard, apart from the thermal-mechanical test, are performed at normal ambient temperature. This standard does not prescribe tests that are characteristic of the apparatus of which the composite hollow core station post insulator ultimately may form a part (e.g. disconnector switch, reactor support, HVDC valves).

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
6 English
CONTENTS
8 FOREWORD
10 INTRODUCTION
11 1 Scope
2 Normative references
12 3 Terms and definitions
16 4 Identification and marking
17 5 Environmental conditions
6 Information on transport, storage and installation
7 Classification of tests
7.1 General
7.2 Design tests
18 Table 1 – Required design and type tests
19 7.3 Type tests
20 7.4 Sample tests
7.5 Routine tests
8 Design tests
8.1 General
8.2 Tests on interfaces and connections of end fittings
8.2.1 General
21 8.2.2 Test specimens
8.2.3 Reference disruptive- discharge dry power frequency voltage test
8.2.4 Thermal mechanical pre-stressing test
8.2.5 Water immersion pre-stressing test
8.2.6 Verification tests
8.3 Assembled core load tests
8.3.1 Test for the verification of the maximum design cantilever load (MDCL)
22 8.3.2 Test for the verification of the maximum design torsion load (MDToL)
23 8.3.3 Verification of the specified tension load (STL)
8.4 Tests on shed and housing material
8.4.1 Hardness test
24 8.4.2 Accelerated weathering test
8.4.3 Tracking and erosion – 1 000 h salt fog AC voltage test
8.4.4 Flammability test
8.4.5 Hydrophobicity transfer test
8.5 Tests on the tube material
8.5.1 General
8.5.2 Porosity test (Dye penetration test)
8.5.3 Water diffusion test
8.6 Water diffusion test on core with housing
9 Type tests
9.1 Internal pressure test
9.2 Bending test
9.3 Specified tension load test, compression and buckling withstand load test
25 9.4 Electrical tests
9.4.1 General
9.4.2 Mounting arrangements for electrical tests
9.4.3 Dry lightning impulse withstand voltage test
9.4.4 Dry or wet switching impulse withstand voltage test
9.4.5 Dry power-frequency withstand voltage test
9.4.6 Wet power-frequency withstand voltage test
10 Sample tests
26 11 Routine tests
11.1 General
11.2 Routine seal leak rate test
11.2.1 General
11.2.2 Test procedure
11.2.3 Acceptance criteria
27 12 Documentation
28 Annex A (informative) Qualification of fillers
A.1 General
A.2 Dye penetration test with solid filler
A.3 Water diffusion test with solid filler
A.4 Tests on interfaces and connections of end fittings with filler
29 Figure A.1 – Example of sample preparation for water diffusion test
30 Annex B (informative) Load definitions, relationship of loads
Figure B.1 – Definitions according to IEC 62231
31 Figure B.2 – Definitions according to IEC 61462
32 Figure B.3 – Comparison of definitions IEC 61462 vs. IEC 62231
33 Annex C (informative) Principle sketch of hollow insulators design assembly
Figure C.1 – Interface description for insulator with housing made by modular assembly
34 Figure C.2 – Interface description for insulator with housing made by injection moulding and ouvermold end fitting
35 Bibliography

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BS EN IEC 62772:2023 2024
$167.15