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Advantages:
The production workshop for the insulation lead is a double –layer full-closed and dustless one with constant temperature and humidity.
Mechanically paper-winding has tight layers and heightened insulation strength.
Application:
Lead wire of transformer, high voltage electrical equipment
Guarantee:
Implement whole production process monitoring and inspection.
1. Technical requirements
Name | Bare copper wire size | Tolerance | Elongation % | Resistivity |
High voltage cable paper wrapped copper strand wire | 0.4-1.0mm | ±1%dmm | 20%-25% | ≤0.017241Ω·mm2/m |
Insulation material | Thickness | Wrap method | Gap width | Overlap width |
High voltage cable paper | 0.05mm 0.075mm | Overlap | No less than 2mm |
2. Technical data of bare copper strand wire
Nominal section (mm2 ) | Wire diameter/piece of each strand*number of strand | Out diameter of strand wire (mm) |
10 | 0.52/7×7 | 4.7 (-0.5~+0) |
16 | 0.64/7×7 | 5.8 (-0.6~+0) |
25 | 0.58/7×14 | 7.7 (-0.7~+0) |
35 | 0.58/7×19 | 8.7 (-0.3~+0) |
50 | 0.68/7×19 | 10.2 (-0.2~+0) |
70 | 0.68/7×27 | 12.6 (-0.5~+0) |
95 | 0.68/7×37 | 14.3 (-0.4~+0) |
120 | 0.68/12×27 | 17.4 (-1.1~+0) |
150 | 0.85/14×19 | 18.8 (-0.4~+0) |
185 | 0.85/12×27 | 21.7 (-1.5~+0) |
240 | 0.85/12×37 | 24.7 (-1.3~+0) |
300 | 0.85/19×27 | 26.2 (-0.7~+0) |
400 | 0.85/19×37 | 29.8 (-0.4~+0) |
500 | 0.95/19×37 | 33.3 (-0.4~+0) |
High voltage cable paper wrapped copper strand wire