Customerized 0.68 / 7*19 Paper Unsulation Covered Litz Copper Wire Enameled Magnet Wire For Transformer
CUSTOMERIZED 0.68/7*19 PAPER UNSULATION COVERED LITZ COPPER WIRE ENAMELED MAGNET WIRE FOR TRANSFORMER
Here are three types:
1.Paper insulated polyvinyl-acetal enameled Continuously Transposed copper wire
2.Paperless Insulated Netting-type Continuously Transposed copper wire
3.Heat Resistant Continuously Transposed enameled copper wire
FEATURES
Reduce additional circulation current loss
Eddy-current loss caused by leaking magnet field
Improve the mechanical strength of coil
APPLICATION
Coil winding of large oil-immersed power transformer and reactor, large capacity dry type transformers. 
SPECIFICATION
Test Item | Technical Requirement | Test Result | ||
Appearance | Bare Stranded Wire | Smooth Surface, no scratch, oil pollution, oxide layer or glitch, strand should be close and tidy and no broken strand or missing strand | Qualified | |
Paper Cover | Paper cover should be tight and uniform, smoothly winded on the bare stranded wire. No cracking, wrinkle, and leaking | Qualified | ||
Size | Dia. of stranded wire | 10.00-10.20mm | 10.10mm | |
Overall diameter | 15.70-16.70mm | 16.20mm | ||
Wrapping Sort | Overlap width | innermost layer | ≥10mm | 12mm |
Outmost Layer | ≥10mm | 12mm | ||
Gap Width | _ | _ | ||
DCR VALUE | ≤0.01724Ω(at 20℃ mm²/m) | 0.017068Production | ||
Elongation | ≥25% | 30.8% | ||
Bending | Diameter of pole is 112mm,, no cracking, leak, no obvious warping. | Qualified | ||
Remark |
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