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eLibrary > BS EN IEC 60851-3:2023 - TC Tracked Changes. Winding wires. Test methods - Mechanical properties >

BS EN IEC 60851-3:2023 - TC Tracked Changes. Winding wires. Test methods - Mechanical properties, 2023

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BS EN IEC 60851-3:2023 - TC Tracked Changes. Winding wires. Test methods - Mechanical properties, 2023

30481601
A-30456025 [Go to Page]
undefined [Go to Page]
Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
English [Go to Page]
CONTENTS
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Test 6: Elongation [Go to Page]
4.1 Elongation at fracture
4.2 Tensile strength
5 Test 7: Springiness [Go to Page]
5.1 General
5.2 Round wire with a nominal conductor diameter from 0,080 mm up to and including 1,600 mm [Go to Page]
5.2.1 Principle
5.2.2 Equipment
Figures [Go to Page]
Figure 1 – Test equipment to determine springiness
Figure 2 – Construction and details of the mandrel (see Table 1) [Go to Page]
5.2.3 Procedure
Tables [Go to Page]
Table 1 – Mandrels for springiness
5.3 Round wire with a nominal conductor diameter over 1,600 mm and rectangular wire [Go to Page]
5.3.1 Principle
5.3.2 Equipment
5.3.3 Specimen
5.3.4 Procedure
Figure 3 – Test equipment to determine springiness
6 Test 8: Flexibility and adherence [Go to Page]
6.1 General
6.2 Mandrel winding test [Go to Page]
6.2.1 Round wire
Table 2 – Magnification to detect cracks [Go to Page]
6.2.2 Rectangular wire
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
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
Figure 6 – Test equipment for peel test
Table 3 – Load for peel test
6.6 Adherence test [Go to Page]
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 [Go to Page]
6.6.5 Tape-wrapped round and rectangular wire (for adhesive tape only)
7 Test 11: Resistance to abrasion (applicable to enamelled round wire) [Go to Page]
7.1 General
7.2 Principle
7.3 Equipment
7.4 Procedure
Figure 9 – Test equipment for unidirectional scrape test
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) [Go to Page]
8.1 General
8.2 Vertical bond retention of a helical coil [Go to Page]
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
Table 4 – Preparation of helical coils
Figure 10 – Test equipment for bond retention of a helical coil
Table 5 – Bond retention at elevated temperature
8.3 Bond strength of a twisted coil [Go to Page]
8.3.1 General
8.3.2 Principle
8.3.3 Equipment
8.3.4 Specimen
Figure 11 – Coil winder [Go to Page]
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
8.4 Enamelled rectangular wire heat bonding
Figure 14 – Arrangement of supports
Figure 15 – Samples for heat bonding
Annex A (informative) Bond strength of heat bonding wires [Go to Page]
A.1 Calculation of the temperature of the twisted coil specimen [Go to Page]
A.1.1 Method
A.1.2 Temperature coefficient
A.1.3 Calculation
A.2 Determination of the heating period [Go to Page]
A.2.1 Voltage-time graphs
A.2.2 Voltage at maximum temperature
Figure A.1 – Example of voltage-time graphs of twisted coil specimens with a nominal conductor diameter of 0,300 mm with isothermic graphs
Figure A.2 – Example of voltage-time graphs of twisted coil specimens with a nominal conductor diameter of 0,315 mm with isothermic graphs
Figure A.3 – Example of voltage-time graphs of twisted coil specimens with a nominal conductor diameter of 0,355 mm with isothermic graphs
Figure A.4 – Example of voltage-time graphs of twisted coil specimens with a nominal conductor diameter of 0,500 mm with isothermic graphs
Annex B (informative) Friction test methods [Go to Page]
B.1 General
B.2 Test A: Static coefficient of friction test method [Go to Page]
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
B.3 Test B: First dynamic coefficient of friction test method [Go to Page]
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) [Go to Page]
B.4.1 Test equipment
B.4.2 Test specimen
B.4.3 Specimen preparation
B.4.4 Procedure
Table B.1 – Load block weights for dynamic coefficient of friction testing
B.5 Test D: Force of friction by the twisted pair method [Go to Page]
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
Figure B.1 – Static coefficient of friction test apparatus
Figure B.2 – Dynamic coefficient of friction test apparatus
Figure B.3 – Diagram of a typical dynamic coefficient of friction tester
Figure B.4 – Material – sapphire (synthetic)
Figure B.5 – Synthetic sapphires mounted on load block
Figure B.6 – Load applied perpendicular to wire path
Figure B.7 – Twisted specimen
Bibliography [Go to Page]

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