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BS EN IEC 61300-2-56:2020

$142.49

Fibre optic interconnecting devices and passive components. Basic test and measurement procedures – Tests. Wind resistance of mounted housing

Published By Publication Date Number of Pages
BSI 2020 28
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This part of IEC 61300 describes the test procedure to test the wind resistance of a protective housing and its mounting hardware using the fastening parts recommended by the manufacturer. The protective housing is considered to have a cuboid shape.

The applied force in this test procedure simulates a steady wind load from each direction to a protective housing and its mounting hardware fixed to a support.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope
2 Normative references
3 Terms and definitions
4 General description
13 5 Apparatus
5.1 Loading method
5.1.1 General
5.1.2 Method for pole-mounted housing
Figures
Figure 1 – Dimensions of pole-mounted and ground-mounted housing
14 Figure 2 – Side view of frontal load application
Figure 3 – Front view of frontal load application
15 Figure 4 – Side view of lateral load application
Figure 5 – Front view of lateral load application
16 5.1.3 Method for ground-mounted housing
5.2 Force generator
Figure 6 – Isometric view of frontal load application
Figure 7 – Isometric view of lateral load application
17 5.3 Force gauge
5.4 Holding fixture
5.5 Force applying device
5.6 Timer
6 Procedure
6.1 General
6.2 Pre-conditioning
6.3 Initial examination
6.4 Mounting DUT
18 6.5 Conditioning
6.6 Recovery
6.7 Final examination
7 Severity
Tables
Table 1 – Recommended severity values for pole-mounted housing
19 8 Details to be specified
Table 2 – Recommended severity values for ground-mounted housing
20 Annex A (normative)Testing pole-mounted protective housings with vertical load application
A.1 General
A.2 Method for pole-mounted housing with vertical load application
Figure A.1 – Side view of vertical load application
21 A.3 Severities
Figure A.2 – Front view of vertical load application
Table A.1 – Recommended severity value for pole-mounted housing and vertical load application
22 Annex B (informative)Calculation of force resulting from wind load
B.1 Formula of force resulting from wind load
B.2 Example of force calculation
Table B.1 – Examples of drag coefficients
23 B.3 Calculation of factor for frontal load application of pole-mounted housing
Figure B.1 – Worst-case situation for frontal load application
Figure B.2 – Model with wind load on one side only
24 B.4 Calculation of factor for lateral load application of pole-mounted housing
Figure B.3 – Model for calculation of FT from FR
25 B.5 Calculation of factor for vertical load application of pole-mounted housing
B.6 Calculation of factor for frontal load application of ground-mounted housing
B.7 Calculation of factor for lateral load application of ground-mounted housing
26 Bibliography
BS EN IEC 61300-2-56:2020
$142.49