Changzhou Zhongli Copper Industry Co., Ltd.
Main products:Copper Wire
Contact Us
  • Contact Person : Mr. Zou Yongming
  • Company Name : Changzhou Zhongli Copper Industry Co., Ltd.
  • Tel : 0086-519-81165393
  • Fax : 0086-518-81665385
  • Address : Jiangsu,Changzhou,No.8, South Hehuan Road, Zhonglou Economic Development Zone,
  • Country/Region : China
  • Zip : 213023

TI 220 polyimide enamel copper flat wire

TI 220 polyimide enamel copper flat wire
Product Detailed
1)Material:CCC Chilean cathode copper 2)Size:a 0.6-7.5mm;b 2-30mm or OEM 3)Thermal level:220C 4)Great heat resisting

Polyimide enamel copper flat wire is made by flat copper conductor (TBR, TBY1, TBY2), on which coating polyimide paint by the paint-srcaping tool or by the felt in 5-13 layers. Based on yielding strength of conduct, it can be divided into soft and semi-hard status, and is an ideal material to produce winding for dry transformer, oil-immersed transformer, generator, motor, reactor, and the other electric appliances. For special requirements of thickness of paint film, please contact us.


1.high heat resistance,

2.fine cut-through resistance,

3.working in cold condition,

4.good resistance of radiation,

5.good chemical solution resisting,

6.good electric conductivity. 

Dimension of conductors

Dimensions of conductor(mm)

0.6≤a≤7.5 30≥b≥2

Tolerance for Dimensions(mm)

a≤3.15 t=±0.02;a>3.15 t=±0.03

b≤3.15 t=±0.02;3.15<b<12.5 t=±0.03; 30≥b≥12.5 t=±0.05

Fillet radius r and Tolerance t

a ≤1.00  r=a/2




3.55<a≤6.00 r=1



insulation thickness(mm)

Class 1 paint film:0.6≤σ≤0.11

Class 2 paint film:0.11<σ≤0.16

Actual measurement of thermal shock resistance

Class 1 paint film>2000v 750°C

Class 2 paint film>5000v 1500°C

Resistivity(Ω mm2/m)


Scraping /Abrasion performance

>100 times

elongation rate of semi-hard wire


elongation rate of soft state wire


Thermal Index


Yielding strength of semi-hard wire


TI 220 polyimide enamel copper flat wire

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