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BS EN IEC 60851-3:2023 – TC

BS EN IEC 60851-3:2023 – TC

$258.95

Tracked Changes. Winding wires. Test methods – Mechanical properties

Published By Publication Date Number of Pages
BSI 2023 128
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PDF Pages PDF Title
1 30481601
76 A-30456025
77 undefined
80 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
82 English
CONTENTS
85 FOREWORD
87 INTRODUCTION
88 1 Scope
2 Normative references
3 Terms and definitions
4 Test 6: Elongation
4.1 Elongation at fracture
89 4.2 Tensile strength
5 Test 7: Springiness
5.1 General
5.2 Round wire with a nominal conductor diameter from 0,080 mm up to and including 1,600 mm
5.2.1 Principle
5.2.2 Equipment
90 Figures
Figure 1 – Test equipment to determine springiness
Figure 2 – Construction and details of the mandrel (see Table 1)
91 5.2.3 Procedure
Tables
Table 1 – Mandrels for springiness
92 5.3 Round wire with a nominal conductor diameter over 1,600 mm and rectangular wire
5.3.1 Principle
5.3.2 Equipment
93 5.3.3 Specimen
5.3.4 Procedure
Figure 3 – Test equipment to determine springiness
94 6 Test 8: Flexibility and adherence
6.1 General
6.2 Mandrel winding test
6.2.1 Round wire
Table 2 – Magnification to detect cracks
95 6.2.2 Rectangular wire
96 6.2.3 Covered bunched wire
6.3 Stretching test (applicable to enamelled round wire with a nominal conductor diameter over 1,600 mm)
Figure 4 – Test equipment for mandrel winding test
97 6.4 Jerk test (applicable to enamelled round wire with a nominal conductor diameter up to and including 1,000 mm)
6.5 Peel test (applicable to enamelled round wire with a nominal conductor diameter over 1,000 mm)
Figure 5 – Test equipment for jerk test
98 Figure 6 – Test equipment for peel test
Table 3 – Load for peel test
99 6.6 Adherence test
6.6.1 General
6.6.2 Enamelled rectangular wire
6.6.3 Impregnated fibre covered round and rectangular wire
6.6.4 Fibre covered enamelled round and rectangular wire
Figure 7 – Scraper
Figure 8 – Cross-section of the wire after removal of the coating
100 6.6.5 Tape-wrapped round and rectangular wire (for adhesive tape only)
7 Test 11: Resistance to abrasion (applicable to enamelled round wire)
7.1 General
7.2 Principle
7.3 Equipment
101 7.4 Procedure
Figure 9 – Test equipment for unidirectional scrape test
102 8 Test 18: Heat bonding (applicable to enamelled round wire with a nominal conductor diameter over 0,050 mm up to and including 2,000 mm and to enamelled rectangular wire)
8.1 General
8.2 Vertical bond retention of a helical coil
8.2.1 General
8.2.2 Nominal conductor diameter up to and including 0,050 mm
8.2.3 Nominal conductor diameter over 0,050 mm up to and including 2,000 mm
103 Table 4 – Preparation of helical coils
104 Figure 10 – Test equipment for bond retention of a helical coil
Table 5 – Bond retention at elevated temperature
105 8.3 Bond strength of a twisted coil
8.3.1 General
8.3.2 Principle
8.3.3 Equipment
8.3.4 Specimen
106 Figure 11 – Coil winder
107 8.3.5 Procedure
8.3.6 Result
Figure 12 – Oval shape coil
Figure 13 – Twisting device with a load applied to the twisted coil specimen
108 8.4 Enamelled rectangular wire heat bonding
Figure 14 – Arrangement of supports
109 Figure 15 – Samples for heat bonding
110 Annex A (informative) Bond strength of heat bonding wires
A.1 Calculation of the temperature of the twisted coil specimen
A.1.1 Method
A.1.2 Temperature coefficient
A.1.3 Calculation
111 A.2 Determination of the heating period
A.2.1 Voltage-time graphs
A.2.2 Voltage at maximum temperature
112 Figure A.1 – Example of voltage-time graphs of twisted coil specimens with a nominal conductor diameter of 0,300 mm with isothermic graphs
113 Figure A.2 – Example of voltage-time graphs of twisted coil specimens with a nominal conductor diameter of 0,315 mm with isothermic graphs
114 Figure A.3 – Example of voltage-time graphs of twisted coil specimens with a nominal conductor diameter of 0,355 mm with isothermic graphs
115 Figure A.4 – Example of voltage-time graphs of twisted coil specimens with a nominal conductor diameter of 0,500 mm with isothermic graphs
116 Annex B (informative) Friction test methods
B.1 General
B.2 Test A: Static coefficient of friction test method
B.2.1 Test method (applicable to enamelled round wires with a nominal conductor diameter from 0,050 mm up to and including 1,600 mm)
B.2.2 Test apparatus
117 B.3 Test B: First dynamic coefficient of friction test method
B.3.1 Principle
B.3.2 Method of test
B.4 Test C: Second dynamic coefficient of friction test method (applicable to enamelled round wires with a nominal conductor diameter from 0,050 mm up to and including 1,600 mm)
B.4.1 Test equipment
118 B.4.2 Test specimen
B.4.3 Specimen preparation
119 B.4.4 Procedure
Table B.1 – Load block weights for dynamic coefficient of friction testing
120 B.5 Test D: Force of friction by the twisted pair method
B.5.1 Enamelled round wires with a nominal conductor diameter from 0,1 mm up to and including 1,500 mm
B.5.2 Test method
Table B.2 – Twisted pair method
121 Figure B.1 – Static coefficient of friction test apparatus
122 Figure B.2 – Dynamic coefficient of friction test apparatus
123 Figure B.3 – Diagram of a typical dynamic coefficient of friction tester
124 Figure B.4 – Material – sapphire (synthetic)
Figure B.5 – Synthetic sapphires mounted on load block
125 Figure B.6 – Load applied perpendicular to wire path
Figure B.7 – Twisted specimen
126 Bibliography

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BS EN IEC 60851-3:2023 - TC
$258.95