Fully Insulated Wire
Technical values of FIW acc. to IEC 60317-56
IEC 60317-56 describes a full Enamelled Wire Specification with diameters, outer diameters, mechanical, electrical, thermal and other characteristics like soldering.
| Test parameter | Test method | Specification values for 0.30 mm FIW 6 | Typical values for 0.30 mm FIW 6 |
|---|---|---|---|
| Mechanical | |||
| Elongation | IEC 60 851-3.1 | ≥ 23 % | 56 % |
| Tensile strength | IEC 60 851-3.2 | not specified | 310 N/mm² |
| Springback | IEC 60 851-3.4.1 | not specified | 68° |
| Solderability | |||
| at 390 °C | IEC 60 851-4.5 | ≤ 4 sec | ≤ 3.0 sec |
| Thermal values | |||
| Temperature index | IEC 60 172 | ≥ 180 °C | 192 °C |
| Heat shock | EC 60 851-6.3.1.1 | ≥ 200 °C | 220 °C/6 mm mandrel |
| Cut through | IEC 60 851-6.4 | ≥ 245 °C | ≥ 260 °C |
| Breakdown voltage (cylinder) | |||
| Volt | min. 10032 V | > 15 kV | |
| V/µm at room temperature | IEC 60 851-5.4.3.2 | min. 76 V/µm | > 100 V/µm |
| at 180°C | IEC 60 851-5.4.3.2 | min. 53 V/µm | 74 V/µm |
| (Volt per µm increase of insulation) |
Test conditions for FIW acc. to UL 2353 (UL 60950)
UL 60950 will be replaced by UL 62368
UL 2353, rather similar to expired IEC 60950 Annex U, gives mainly electrical properties which mostly are rather short-term tests.
| Test conditions | acc. to UL 2353 No. |
Typical values for 0.30 mm FIW 6 |
|---|---|---|
| U2.1Electrical strength | 9 | 6000 Vrms 1 min (twisted pair) |
| U2.2Adherence and flexibility | 10 | 3000 Vrms 1 min (mandrel) |
| U2.3Heat shock | ||
| 225 °C x 30 min for class B | 12 | 3000 Vrms 1 min (mandrel) |
| U2.4Retention of electric strength after bending | 11 |
3000 Vrms 1 min (mandrel) |