| FLEXIBILITY AND ADHERENCE MANDREL WINDING TEST REQUIREMENTS FOR ENAMELLED ROUND COPPER WINDING WIRES | |||||||||
| (BASIS : IS 13730 - .. & IS 13778 - 3) | |||||||||
| Nominal Conductor Diameter | Elongation before mandrel winding(%) |
Mandrel Winding Test Requirement | |||||||
| Over | Upto to & Including | From | Upto to & Including | ||||||
| Part 3 : Polyester copper wires, Class 155 | |||||||||
| Part 8 : Polyesterimide copper wires, Class 180 | |||||||||
| (mm) | (SWG) | Part 13 : Dual Coated PE (PEI) + PAI, Class 200 | |||||||
| 0.050 | 0.063 | 47 | 46 | 15 | 0.150 mm | ||||
| 0.063 | 0.080 | - | 45 | 10 | 0.150 mm | ||||
| 0.080 | 0.112 | 44 | 41 | 5 | 0.150 mm | ||||
| 0.112 | 0.140 | 40 | 39 | 0 | 0.150 mm | ||||
| 0.140 | 1.600 | 38 | 17 | 0 | 1 x d | ||||
| 1.600 | 5.000 | 16 | 14 | 0 | 32 % linear elongation | ||||
| Note :1) DefinItion of Crack : An opening in the insulation which exposes the conductor, view at the stated magnification 2) Magnification : 10 - 15 times for conductor diameter up to & including 0.040 mm 6 - 10 times for conductor diameter over 0.040 mm up to & including 0.50 mm Normal vision or upto 6 times for conductor diameter over 0.50 mm. |
|||||||||
| Note: In view of continuous improvements in design & process specifications given above are subject to change without notice. | |||||||||