Wrapping method | Insulation thickness mm | Breakdown voltage ≥ | |
Nominal value | Tolerance | ||
Two layers polyimide self-locking wrapping | 0.15 | ±0.03 | 6000 |
Two layers of polyimide lap wrapped in opposite directions | 0.15 | ±0.03 | 6000 |
Three layers of polyimide lap wrapped in opposite directions | 0.23 | ±0.03 | 7000 |
Wrapping type | Insulation Thickness(mm) | Breakdown voltage above | |
Standard Value | Tolerance | ||
2 layers of polyester films | 0.22 | ±0.03 | 5000 |
2 layers of polyester films+1 layer of non-woven fabrics | 0.33 | ±0.03 | 5000 |
3 layers of polyester films | 0.3 | ±0.03 | 7500 |
3 layers of polyesters film+ non-woven fabrics | 0.42 | ±0.03 | 7500 |
Property items | Unit | Typical value | |||||||
25μm | 40μm | 50μm | 75μm | 100μm | |||||
Density | g/cm3 | 1420±20 | |||||||
Tensile strength | Longitudinal | Mpa | ≥135 | ||||||
Horizontal | ≥115 | ||||||||
Elongation | Longitudinal | % | ≥30 | ||||||
Horizontal | ≥35 | ||||||||
Dielectric strength | Average Value | Mv/m | ≥150 | ≥130 | ≥110 | ||||
Single value | ≥100 | ≥80 | ≥70 | ||||||
Surface resistivity 200ºC | Ω | ≥1.0X1013 | |||||||
Volume resistivity,200ºC | Ω.m | ≥1.0X1010 | |||||||
Dielectric constant,48~62Hz | ____ | 3.5±0.4 | |||||||
Media dissipation factor,48~62Hz | ____ | ≤4.0X10-3 | |||||||
Temperature for long term heat-resistance | ____ | ≥180 | |||||||
typical thickness | 25um | 30um | 50um | 75um | 100um |
Thickness tolerance: | +4 | +6 | +7 | +8 | +10 |
-3 | -5 | -6 | -6 | -7 |
Product name: Polyimide covered flat copper wire(imide) | ||||
Type: SBEMB-30/180 | Test No.: 20210629 | |||
Specification: 2.12*7.10 mm | Technique standard: GB/T7673.3-08 | |||
Test subject | Technical requirement | Test result | ||
Appearance | Tightness, uniformity, smooth | Qualified | ||
Size | a side | 2.12mm+0.03mm | 2.10mm | |
b side | 7.10mm+0.07mm | 7.11mm | ||
Radius | 0.65mm±25% | Qualified | ||
Film thickness | 0.24 -0.33mm | 0.29 mm | ||
Maximum A side size | 2.48 mm | 2.39mm | ||
Resistivity | 20ºC≤0.017241Ω. mm²/m | 0.017190Ω. mm²/m | ||
Elongation | ≥ 32 % | 40% | ||
Spring back | ≤5.5 degree | 4.0 degree | ||
Flexibility adhesiveness | Bending | No crack, no rip | Qualified | |
Adhesiveness(cutting) | No lose adhesiveness after stretching 10% | Qualified | ||
Work temperature | 260-300 | Qualified | ||
Breakdown Voltage | ≥ 2.5 KV | 3.2 3.4 3.5 3.2KV | ||
Appraisal result | Qualified | |||