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BS EN IEC 61914:2021 – TC:2022 Edition

BS EN IEC 61914:2021 – TC:2022 Edition

$246.62

Tracked Changes. Cable cleats for electrical installations

Published By Publication Date Number of Pages
BSI 2022 120
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This International Standard specifies requirements and tests for cable cleats used for securing cables in electrical installations and for intermediate restraints used for holding cables together in formation in electrical installations. Cable cleats provide resistance to electromechanical forces where declared. This document includes cable cleats that rely on a mounting surface specified by the manufacturer for axial and/or lateral retention of cables. Various types of cable cleats and intermediate restraints are shown in Annex A. NOTE Requirements for manufacturers in this document also apply to importers and responsible vendors where appropriate. This document does not apply to cable ties.

PDF Catalog

PDF Pages PDF Title
72 undefined
77 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
79 Annex ZZ (informative)Relationship between this European Standard and the safety objectives of Directive 2014/35/EU [2014 OJ L96] aimed to be covered
81 English
CONTENTS
84 FOREWORD
86 1 Scope
2 Normative references
87 3 Terms, definitions and abbreviations
89 4 General requirements
5 General notes on tests
90 6 Classification
6.1 Classification according to material
6.1.1 Metallic
6.1.2 Non-metallic
6.1.3 Composite
91 6.2 Classification according to maximum and minimum temperature
6.3 Classification according to resistance to impact
6.3.1 Very light
6.3.2 Light
6.3.3 Medium
6.3.4 Heavy
6.3.5 Very heavy
Tables
Table 1 – Maximum temperature for permanent application
Table 2 – Minimum temperature for permanent application
92 6.4 Classification according to type of retention or resistance to electromechanical forces or both
6.4.1 General
6.4.2 With lateral retention
6.4.3 With axial retention
6.4.4 Resistant to electromechanical forces, withstanding one short circuit
6.4.5 Resistant to electromechanical forces, withstanding more than one short circuit
6.5 Classification according to environmental influences
6.5.1 Resistance to ultraviolet light for non-metallic and composite components
6.5.2 Resistance to corrosion
93 Table 3 – Classification for resistance against corrosion for stainless steel components
Table 4 – Classification for resistance against corrosion for coated mild steel or cast-iron components
94 6.6 Classification according to electromagnetic compatibility
6.6.1 Liable to inductive heating
6.6.2 Not liable to inductive heating
7 Marking and documentation
7.1 Marking
7.2 Durability and legibility
95 7.3 Documentation
Figures
Figure 1 – Test piston dimensions
96 8 Construction
9 Mechanical properties
9.1 Requirements
9.2 Impact test
97 Figure 2 – Typical arrangement for impact test
98 9.3 Lateral load test
9.3.1 Lateral load test for cable cleats
Table 5 – Impact test values
100 9.3.2 Lateral load test for intermediate restraints
Figure 3 – Typical arrangements for lateral load test for cable cleats
101 Figure 4 – Typical arrangements for lateral load test for intermediate restraints
102 9.4 Axial load tests
103 9.5 Test for resistance to electromechanical forces
9.5.1 General
Figure 5 – Typical arrangement for axial load test
104 Figure 6 – Typical assemblies for test for resistance to electromechanical force
Figure 7 – Typical arrangement of three cables in trefoil formation
105 Figure 8 – Typical arrangement of cables in flat formation
106 9.5.2 For cable cleats and intermediate restraints classified in 6.4.4
9.5.3 For cable cleats and intermediate restraints classified in 6.4.5
10 Fire hazards
10.1 Flame propagation
107 10.2 Smoke emission
10.3 Smoke toxicity
Figure 9 – Typical arrangement of the needle-flame test
108 11 Environmental influences
11.1 Resistance to ultraviolet light
11.2 Resistance to corrosion
11.2.1 General
Table 6 – Component compliance and classification for resistance against corrosion
109 11.2.2 Non-metallic components
11.2.3 Components made of stainless steel
11.2.4 Components made of mild steel or cast iron with metallic coating
11.2.5 Components made of non-ferrous alloys
Table 7 – Zinc coating thickness of reference materials
110 11.2.6 Salt spray test
12 Electromagnetic compatibility
12.1 Electromagnetic emission
12.2 Inductive heating
111 Annex A (informative) Examples of cable cleats and intermediate restraints
Figure A.1 – Metallic strap cable cleat for single or bundled cables
Figure A.2 – Metallic single bolt cable cleat for single cable
Figure A.3 – Metallic two-bolt cable cleat for single cable
Figure A.4 – Composite cable cleat for three cables in trefoil formation
Figure A.5 – Non-metallic cable cleat for single cable
Figure A.6 – Metallic cable cleat for single cable with integral mounting stud
Figure A.7 – Non-metallic cable cleat for three cables in flat formation
Figure A.8 – Metallic cable cleat for use with channel cable support system
Figure A.9 – Non-metallic cable cleat for three cables in trefoil formation
112 Figure A.10 – Non-metallic cable cleat for three cables in trefoil formation with integral ladder rung clamp
Figure A.11 – Metallic intermediate restraint for three cables in flat formation
Figure A.12 – Composite intermediate restraint for bundled cables
113 Annex B (informative) Calculation of forces caused by short-circuit currents
B.1 Characteristics
Figure B.1 – Short-circuit current of a far-from-generator short circuit with constant a.c. component
114 B.2 Specification of the test current
B.3 Calculation of the mechanical forces between conductors
Figure B.2 – Short-circuit current of a near-to-generator short circuit with decaying a.c. component
115 Figure B.3 – Two parallel conductors
117 Annex C (normative) Identification of MV or HV cable used in short-circuit test
118 Bibliography

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BS EN IEC 61914:2021 - TC
$246.62