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Coincidence Of Butt Gaps Oil-Immersed Transformers Copper Paper Covered Flat Wire

Paper covered copper ( aluminum ) flat wire is the winding made of oxygen-free copper rod ( extrusion,wire drawing ) or electrician circular aluminum rod after extrusion by the specification mold covered by insulation paper. Paper covered wire is mainly used for winding wire of oil-immersed distribution transformers and power transformers.We can change the insulation paper according to the customer's request.
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  • ZB(L)

  • Baiwei ELECTRIC

  • 8544110000

Place of Origin:Jiangsu, China                    Brand Name:Baiwei Electric Wire
Model Number:Paper Coated Flat Copper Wire
Type:insulated
Application:oil-immersed transformer, rectifier, reactors winding
Conductor Material:copper or aluminum
Conductor Type:Solid
Insulation Material:kraft paper, 3M paper, telephone cable paper, Telephone cable paper / 3M paper / MIKITOKU paper
Name:Paper Coated Flat Copper Wire
conductor:copper or aluminum
Diameter:round:2.0-7.0; flat:a:0.8-5.6mm,b:2.0-16mm
Certifaction:UL,SGS,RoHS,ISO9001
OEM:yes
Thermal Class:105℃

Insulation paper:Cable paper/telephone paper /insulation paper/NOMEX

Standard:IEC,NEMA,GB,JIS
Main Application:oil-immersed transformer windings
Bobbin:30kg/50kg/150kg wooden spool or according to customers requirements
Supply Ability:1500 Ton/Tons per Month Telephone Paper Covered Aluminum/ Copper Round Wires Strips
Packaging & Delivery
Packaging Details Paper Coated Flat Copper Wire
Inner packing: 30/50/150kg wooden spool,in different wooden spools according to your wire diameters;
Outer packing:wooden case or according customers' special requirement
Port:Qingdao,Shanghao,Tianjin
Lead Time:
Quantity(kilograms) 1 - 500   <10days
Quantity(kilograms) >500     15days

Telephone cable paper / 3M paper / MIKITOKU covered wire oil immersed transformer winding wire
Telephone cable paper covered aluminum wire, also known as plain paper covered insulated aluminum, according to customer requirements, in the aluminum conductor winding three or more layers of cable paper or telephone paper. Plain paper covered wire is oil immersed transformer coil and similar electrical coil of special material, after the immersion using temperature index of 105℃. According to customer requirements, and can be divided into phone paper, cable paper, high voltage cable paper, paper and other winding insulation.

Product Tech Information :


Project Name
Standard Test tool
Conductor size and R corner radius Follow standard of GB/T7673.1-87 Micrometer and R type
Bend The specimen is not cracked, no crack, no obvious sticking out of the paper according to the standard curve. Experimental round rod and flat wire bending apparatus


Paper Covered Round Wire Insulation Thickness
Standard Insulation Thickness(mm) 0.3 0.45 0.80
1.20
1.80
4.25
Tolerance(mm) ±0.05 ±0.05 ±0.10 ±0.12 ±0.15 ±0.30
Paper Covered Flat Wire Insulation Thickness
Standard Insulation Thickness(mm) 0.45
0.6 0.95 1.35 1.60 1.95 2.45 2.95
Maximum Insulation Thickness(A-a) 0.57 0.74 1.14 1.56 1.84 2.23 2.77 3.32
Minimum Insulation Thickness(B-b) 0.40 0.53 0.85 1.20 1.45 1.80 2.30 2.75

Coincidence Of Butt Gaps Oil-Immersed Transformers Copper Paper Covered Flat Wire

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