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BS EN 60851-5:1998:2004 Edition

$102.76

Winding Wires. Test methods – Electrical properties

Published By Publication Date Number of Pages
BSI 2004 22
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PDF Pages PDF Title
1 BRITISH STANDARD
2 National foreword
4 Foreword
Foreword to amendment A2
Contents
5 Introduction
1 Scope
2 Normative reference
3 Test 5: Electrical resistance
6 4 Test 13: Breakdown voltage
4.1 Principle
Table 1 – Rates of test voltage increase
4.2 Equipment
4.3 Enamelled round wire with a nominal conductor diameter up to and including�0,100�mm
7 Table 2 – Loads applied to the wire
4.4 Enamelled round wire with a nominal conductor diameter over�0,100�mm up to and including�2,50…
Table 3 – Loads applied to the wire and number of twists$
8 4.5 Round wire with a nominal conductor diameter over�2,500�mm
4.6 Fibre wound round wire
9 4.7 Rectangular wire
5 Test 14: Continuity of insulation
5.1 Low-voltage continuity
10 5.2 High-voltage continuity
Table 4 – Fault currents
Table 5 – Test voltages
11 6 Test 19: Dielectric dissipation factor
6.1 Principle
6.2 Equipment
6.3 Specimen
6.4 Procedure
12 6.5 Result
7 Test 23: Pin hole test
13 Figure 1 – Arrangement of cylinder and specimen for the breakdown voltage test
14 Figure 2 – Device for twisting the specimen for breakdown voltage test
15 Figure 3 – Specimen for the breakdown voltage test
16 Figure 3a – Specimen for the breakdown voltage test
17 Figure 4 – Apparatus for testing the low voltage continuity of covering
Figure 5 – High-voltage d.c. continuity — Pulleys for wire size�0,050�mm to�0,250�mm
18 Figure 6 – Pulley dimensions and spacing for wire size�0,250�mm to�1,600�mm
Figure 7 – Suitable electrode arrangements for testing the dielectric dissipation factor
19 Annex A (normative)
Dissipation factor methods
A.1 Tangent delta — Intersection point
A.2 Test methods
A.2.1 Method A — Using molten metal alloy
A.2.2 Method B — Wire coated with a conductive film
A.3 Interpretation of results
20 A.3.1 Linear method
Figure A.1 – Example of linear method
A.3.2 Logarithmic method
Figure A.2 – Example of logarithmic method
21 Annex ZA (normative)
Normative references to international publications with their corresponding European …
BS EN 60851-5:1998
$102.76