Kraft Paper Covered Aluminum/ Copper Flat Wire

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Place of Origin: China                                                                    Brand Name: XINCHENG

Name: Paper Covered Aluminum/Copper Wire                             Type: Insulated

Application: oil-immersed transformer windings                           Thermal Class: 105,220C

Insulation Material: kraft Paper, NOMEX paper, 3M paper, Telephone cable paper / 3M,miki kraft paper, HPI-Green

Shape: round and flat                                                                    Conductor Type: Solid

Kraft paper covered round (Al &Cu)wire: 1.0mm-7.0mm

Kraft paper covered rectangular AL wire: (a)0.90mm-10.00mm, (b) 2.00-35.00mm

Kraft paper covered rectangular Copper wire: (a)0.90mm-5.60mm, (b) 2.00-16.00mm

NOMEX paper covered rectangular wire: (a): 0.90mm-10.00mm Side(b): 2.00mm-16.00mm

Layer: Single, double, triple, multi-layers or according to your requirement

Conductor Material: Copper or Aluminum

Bobbin: 30kg/50kg/150kg wooden spool or according to customers requirement

Standard: IEC, NEMA, GB, JIS                                                              Certifications: SGS, UL, RoHS, ISO

Warranty: 1 year                                                                                 OEM & ODM: Accept

Product Instruction :

Paper covered wire by Electrical Aluminum Pole extrusion die by a certain size or drawn wire after annealing, and then in the aluminum conductor wrapped more than two or two insulating paper (including paper, telephone, cable paper, high voltage cable paper, turn insulation paper) of the winding wire, suitable for oil-immersed transformers and other electrical winding with a similar wire. Produced by the extrusion process electrical bare aluminum wire is wrapped production of the cable wire is the best material.

Paper Covered Aluminum/ Copper Wire uses two layers or several layers as the insulation layer. The wrapping direction of paper is same. And every layer paper twines conductors continually and compactly without wrinkles. Used for oil-immersed transformer.

Telephone Cable Paper covered aluminum wire is used in oil-immersed transformer and other similar electrical coil windings.

Paper wrapped wires are special materials, It is mainly used for oil immersed Transformer, Reactor, Generator and other electric devices.. The application temperature index after impregnation is 105°C. NOMEX wrapping materials whose temperature index is 200°C are used to produce dry type transformers, According to the requirements of users, it can apply phone print paper, cable paper, high tension cable paper, interturn insulation paper and Dane release paper, etc. and Dane release paper, etc.

 

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.

Paper covered wire
Paper covered wire

NOMEX Covered Rectangular/Flat Aluminum Wire:

NOMEX coated Aluminum wire produced by the flat and round, as aluminum are dissolved can be produced.

NOMEX covering corresponds to class H insulation is mainly used in the construction of condensers and capacitors. Main application of it is in shielding of cables in high temp. environment (200°C) such as dry type transformers, military and aerospace cables. NOMEX covered conductors are more effective in condition where temperature resistance and dielectric strength requirements are high.

By extrusion of bare aluminum wire wrapped and NOMEX Paper covered wire, the mechanical performance and electrical performance better, instead of making difficult composite enameled flat wire, suitable for transformer, winding of lifting electromagnet, electric welding machine and other products.

 

Product Name Wrapping method Number of wrapping layers Insulation thickness / mm Breakdown voltage ≥
NOMEX Paper wrapped wire Self locking lap joint 1.5~2mm 1 0.12±0.03 600V
Self locking lap joint 1.5~2mm 2 0.24±0.03 1500V
50%stacking 1 0.22±0.03 1200V
50%stacking 2 0.40±0.03 3000V
Lap 1.5mm in opposite direction and wrap 3 0.33±0.03 2500V

 

Application of NOMEX Paper Covered Aluminum wire :

Mobile Transformer, Traction Transformers, Pole-mounted distribution transformers, Power substations, rectifiers, oil-immersed transformer coil winding.

NOMEX
NOMEX

Product classification and Production Scope

Product classification:
As per Conductor Material: Copper , Aluminum
As per Inner Conductor: Paper wrapped bare  Conductor

Insulation thickness: Double paper covered (DPC) or Triple Paper Covered (TPC), According to Customer’s requirements.

 

Production Scope:
Conductor of Paper wrapped  wire:
Kraft paper covered round (Al &Cu)wire: 1.0mm-7.0mm

Kraft paper covered rectangular AL wire: (a)0.90mm-10.00mm, (b) 2.00-35.00mm

Kraft paper covered rectangular Copper wire: (a)0.90mm-5.60mm, (b) 2.00-16.00mm

NOMEX paper covered rectangular wire: (a): 0.90mm-10.00mm Side(b): 2.00mm-16.00mm

Product classification
Product classification

Materials

Conductor Materials :
Conductor material is used according to GB/T5584 or DIN EN 13601. Cu-ETP or Cu-OF are used predominantly and if requested, can be delivered with increase strength.

 

Resistivity :Soft copper wire  ≤ 0.017241Ω•mm²/m  at 20°C, Soft aluminum wire  ≤ 0.028000Ω•mm²/m  at 20°C
Proof stress Rp0.2:soft < 100 N/ mm2,Semi-hard 100-300 N/ mm²,
The deviation of Proof stress Rp0.2 could be +0-20 N/ mm².

Conductor can be bare rectangle copper or enamel rectangle copper or bare rectangular aluminum

CPR1 Rp0.2 ≤ 180N/mm2 tolerance  0 +20%
CPR2 180 <  Rp0.2 ≤ 220N/mm2 tolerance  0 +20%
CPR3 220 <  Rp0.2 ≤ 260N/mm2 tolerance  0  +20%

 

Thickness of kraft paper wrapped round or rectangular wire should conform to the following table or mutual consultation between supply and demand requirements:

Kraft Paper Wrapped Round Wire Insulation Thickness       Unit: mm

Conductor Nominal Diameter                       1.00≤d≤7.00
Nominal Insulation Thickness 0.3 0.45 0.8 1.2 1.8 4.25
Deviation ±0.05 ±0.05 ±0.10 ±0.12 ±0.15 ±0.30

Note: If thickness is between two specification, please take the deviation corresponding to large size.

 

Kraft Paper Wrapped Rectangular Wire Insulation Thickness     Unit: mm

Nominal Insulation Thickness 0.45 0.6 0.95 1.35 1.6 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) 0.4 0.53 0.85 1.2 1.45 1.8 2.3 2.75

 

Bending Standard of kraft paper wrapped Wire

 

Kraft Paper Wrapped Round Wire             Unit: mm

Insulation Thickness Experimental method Rod Diameter
 0.30≤σ≤0.80 Involution 100
1.20≤σ≤4.25 150

 

Kraft paper wrapped Rectangular wire     Unit: mm

Insulation Thickness Experimental method Rod Diameter
 0.30≤σ≤0.80 Broad Side Bending

 

150
1.20≤σ≤4.25 200

We could offer products of special requirements on conductor size, insulation layer thickness, or wire number of the composite.

 

Insulation Materials:

Wrapping materials:  Power Cable Paper, High Density Insulation Paper, heat-resistant insulating paper, clupak paper, NOMEX 410, all kinds of self-adhesive paper and other special insulation materials

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.

 

Advantages Of Our Paper Covered Copper /Aluminum Wire:

  1. Paper Covered Aluminum/ Copper Wire is a special kind of magnet wires. Its conductors is oxygen-free copper rods or electrical round aluminum rods which squeeze and draw by the certain size of mold. And its insulations is special material.
  2. Our Paper Covered Aluminum/ Copper Wire uses two layers or several layers as the insulation layer.
  3. The wrapping direction of paper is same. And every layer paper twines conductors continually and compactly without wrinkles.
  4. Uses for oil-immersed transformers, reactors and other windings.
  5. Excellent resistance to abrasion and solvent.
    6. Excellent electricity performance.
    7. Excellent heat shock and flexibility.
    8. High cut-through.
    9. Resistance to high voltage in oil.
    10. Rise up the filling coefficient of the transformer.
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

 

Specification: (5.00*13.00 mm)
Test subject Technical requirement Test result
Appearance Tightness, uniformity, smooth Qualified
Size a side 5.00mm+0.05mm 4.97mm
 b side 13.00mm+0.10mm 13.01mm
Radius 1.00mm±25% Qualified
Film thickness 0.40-0.54 mm 0.47mm
Maximum A side size 5.59mm 5.45 mm
Wrapping Overlapping    >2.0mm 3.0mm
Gap <  2.0mm —-
Elongation >  17% 31%
Resilience < 5º —-
Flexibility & adhesiveness No crack, No rip Qualified
Conductor resistance(20º C) ≤0.0004806 Ω/m 0.0004291Ω/m
Appraisal result Qualified
Remark

 

Technical Parameters(AL) :
Test Standard requirements
Specification Round wire:Ø1.0 mm—Ø7.0 mm
Flat wire:a side 0.90—10.0mm;b side 2.0—35.0mm
Resistivity 0.02785Ω.mm2/m
Breakdown voltage 1500V
Wrapped layer 6 times bare wire diameter, test rod paper cladding is not loose
Appearance Wrap firmly, closely, evenly, without wrinkles
Packaging Wood tray packaging, length can be customized

 

Wrapping method:

At present, there are mainly four wrapping methods adopted by users:

  1. all gaps of the inner layer are wrapped, and the outer layer is overlapped
  2. inner and outer two-layer stack package, intermediate gap package
  3. all overlapping wrapping
  4. outer two-layer inlay package and other gap packages

Our company can adjust the wrapping method according to the user’s requirements. The paper layer can be wrapped in the same direction or in different directions.

Main Features:

Main Features:

1.Papers are applied with butt intercalation in the following manners :

2 papers- double butt intercalation- advanced 40-60%.

3 papers- triple butt intercalation-advance 28-38%.

 

Papers are lapped in the following manners : 

One Paper applied with 47-49% overlap-equivalent to 2 Papers.

One Paper applied with 64-66% overlap-equivalent to 3 Papers.

Two Telephone Cable Papers each applied in one of the above manners.

Note: If the maximum dimensions do not exceed the maximum size conductor with the specified maximum insulation thickness, insulation thickness allowed to exceed the specified value.

 

FAQ

Q : How about your company’s annual production capacity?
A : Our Company’s annual production is about 8,000 tons.

Q :What’s your company’s product scope?
A : We have many kinds of products ,such as enameled aluminum wire, enameled cooper wire, paper covered magnet wire, fiber glass

covered magnet wire and other aluminum/cooper magnet wire products.
Q :What’s the temperature-resist grade of your enameled aluminum wire?
A : We produce the thermal class of enameled aluminum wire from 130 to 220 Centigrade.

Q: How many kind of spools size ?

A:PT4, PT10, PT15, PT25,PT30, PT35, PT60, PT90,PT200  wooden spools PT-500 and etc.

Q : What is specifications of enameled wire your company can produce?

A: 1.Enameled round wire: 0.25mm-6.0mm

  1. Enameled flat aluminum wire: a: 1-10mm, b: 2-22mm
  2.     Enameled rectangular wire: Side(a): 1mm-10mm, Side(b): 2mm-16mm
  3. Kraft paper covered round (Al & Cu)wire: 1.0mm-7.0mm
  4. Kraft paper covered rectangular AL wire: (a)0.90mm-10.00mm, (b) 2.00-35.00mm
  5. Kraft paper covered rectangular Copper wire: (a)0.90mm-5.60mm, (b) 2.00-16.00mm

NOMEX paper covered rectangular wire: (a): 0.90mm-10.00mm Side(b): 2.00mm-16.00mm

  1.    Fiberglass covered round wire:1.00mm-8.00mm
  2.   Fiberglass covered rectangular (Al & Cu) wire: (a) 0.90mm-10.0mm,(b)2.00mm-22.00mm

Q : What’s the temperature-resist grade of your enameled  wire?

A: We produce the thermal class of enameled wire from class130 to class220

Q : Could you provide the free samples?
A : Yes, We could provide the free samples within 0.5kg. You only need undertake the express charges.

Q : What’s the price of your enameled aluminum wire?
A : Please sent an email to our office [email protected] or call whatsapp /mobile 0086-13752439076, our salesman will reply you as soon as possible.

Packaging & Delivery

Packaging Details

Paper Covered Aluminum Wire Inner packing: in different wooden spool, such as 30/50/150kg wooden spool, or according to your wire diameters
Outer packing: wooden spool and and wooden case or according customers’ special requirement.

Port: Qingdao/Shanghai/Tianjin.

Packaging
Packaging
Packaging
Packaging

Please Contact Us

Miss: lydia

Mob: 86-13752439076      Fax: 86-22-60863016  

https://enamelled-wire.cn

[email protected]

WeChat :86-13752439076   WhatsApp: 86-13752439076