BS EN 62772:2016
$142.49
Composite hollow core station post insulators for substations with a.c. voltage greater than 1 000 V and d.c. voltage greater than 1 500 V. Definitions, test methods and acceptance criteria
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 28 |
This International Standard applies to composite hollow core station post insulators consisting of a load-bearing insulating tube (core) made of resin impregnated fibres an insulating filler material (e.g. solid, liquid, foam, gaseous – pressurized or unpressurized), a housing (outside the insulating tube) made of polymeric material (for example silicone or ethylene-propylene) and metal 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 and a frequency not greater than 100 Hz or for use in direct current systems with a rated voltage greater than 1 500 V.
The object of this standard is:
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to define the terms used;
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to prescribe test methods;
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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 may be characteristic of the apparatus of which the composite hollow core station post insulator ultimately may form a part. Further technical input is required in this area.
“Pressurized” means a permanent gas or liquid pressure greater than 0,05 MPa (0,5 bar) gauge. The gas can be dry air or inert gases, for example sulphur hexafluoride, nitrogen, or a mixture of such gases.
“Unpressurized” means a gas or liquid pressure smaller than or equal to 0,05 MPa (0,5 bar) gauge.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | European foreword Endorsement notice |
| 6 | English CONTENTS |
| 8 | FOREWORD |
| 10 | INTRODUCTION |
| 11 | 1 Scope 2 Normative references |
| 12 | 3 Terms and definitions |
| 16 | 4 Identification and marking 5 Environmental conditions 6 Information on transport, storage and installation 7 Classification of tests 7.1 General |
| 17 | 7.2 Design tests 7.3 Type tests 7.4 Sample tests 7.5 Routine tests |
| 18 | 8 Design tests 8.1 General Table 1 – Required design and type tests |
| 19 | 8.2 Tests on interfaces and connections of end fittings 8.2.1 General 8.2.2 Test specimens 8.2.3 Reference dry power frequency test 8.2.4 Thermal mechanical pre-stressing test 8.2.5 Water immersion pre-stressing test 8.2.6 Verification tests |
| 20 | 8.3 Assembled core load tests 8.3.1 Test for the verification of the maximum design cantilever load (MDCL) 8.3.2 Test for the verification of the maximum design torsion load (MDToL) |
| 21 | 8.3.3 Verification of the specified tension load (STL) |
| 22 | 8.4 Tests on shed and housing material 8.4.1 General 8.4.2 Tracking and erosion test 8.4.3 Flammability test 8.5 Tests on the tube material 8.5.1 General 8.5.2 Dye penetration test 8.5.3 Water diffusion test 9 Type tests 9.1 Internal pressure test 9.2 Bending test |
| 23 | 9.3 Specified tension load test, compression and buckling withstand load test 9.4 Electrical tests 9.5 Wet switching impulse withstand voltage 10 Sample tests 11 Routine tests 11.1 General 11.2 Routine seal leak rate test 11.3 Test procedure 11.4 Acceptance criteria |
| 24 | 12 Documentation |
| 25 | Annex A (informative)Water diffusion test Figure A.1 – Example of sample preparation for water diffusion test |
| 26 | Bibliography |
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