Insulation Paper Covered Copper Wire for Oil-Immersed Transformer Winding F46 Pi Film Covered Round Copper Wire Special Magnet Wire Winding for Transformer

• Application: Power, Electronic, Instrument, Lighting, Rectifier
• Phase: Three
• Core: Core-type Transformer
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: SF10-25000/110
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC
• Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: High Frequency
• Shape of Core: Ring
• Brand: Ville
• Test Certification: CQC Transformer Test
• Voltage Range Hv: 110/115/121/+-2X2.5%
• LV: 6.3/6.6/10.5/11/
• Rated Power Definitionwer: 25000kVA
• Tap Changer: Mr or Hm China
• Vector Group: Yn, D11
• Transport Package: Wooden Cases and Main Body Nude Packing
• Specification: IEC Standard
• Trademark: vilLE
• Origin: China
• HS Code: 8504231200
• Production Capacity: 1set/6monthes
• Package Size: 100.00cm * 100.00cm * 100.00cm
• Package Gross Weight: 1000.000kg

Product Description

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 ºC . According to customer requirements, and can be divided into phone paper, cable paper, high voltage cable paper, paper and other winding insulation.

Technical parameters:
Voltage combination and tapping rangeHV:110kv 115kv 121kv+-2x2.5%
LV: 6.3 6.6 10.5 11
Connection group:yn,d11
Winding combination:H-L
No-load current(%):0.5
No-load loss(kW):21.3
On-load loss(kW ):98
Lmpedance(%):10.5
Weight of active part(kg) Around:31.9ton
Transport weight(kg):Around 36.5 ton(filling with nitrogen)
Transport dimension (L W H mm):5280x3980x4270
Capacity:25000kva

Structure characteristic:
1,Iron core
1. 1The iron core adopts cold-rolled crystal-oriented silicon steel plate 30Z140 with high quality, low-loss, and no
time effect, sheared by Geroge line and with no burr. 1.2 Iron core adopts pulling board structure, the upper
and down yoke is clamped by board, to form the frame structure. The iron core adopts advanced lamination
process, which effectively controls the no-load loss and electro-magnetic noise.

2 Winding
2.1 Winding adopts mature structure, which ensure the reliability of transformer operation.
2.2 The insulation power field intensity between turns shall be controlled no greater than 1.6kV/mm.

3,Body
3.1 Body adopts mature insulation structure, and strictly guarantee the main axial insulation margin.
3.2 Body mostly adopt multi-coil whole assembly, processed in constant voltage and evaporation, which made
coil shrink evenly and with less rebounce, and enhance the electric strength and mechanical strength.
3.3 Adopt laminating wood board or thermal shaped insulation cardboard. Pressed tightly with pin, which ensure
the winding is constantly pressed tightly. 

4,leading wire
4.1 The layout of all leading wire is reasonable, which guarantees the enough electric distance and mechanical
strenth. 
4.2 All leading wire is cirlulized ,which guarantee the reliable wild or prize connection. 

5,Oil tank
5.1 Oil tank adopts structure of flat top, bell jar type, which add the mechanical strength of oil tank and also
make the appearance beautiful and graceful, site installation tend to be more convenient.
5.2 Pipeline with gas relay such as the oil tube and bushing hoist support on top of oil tank is with hoist
gradient, to facilitate the gas in transformer flow to gas relay.
5.3 Vacuum oiling is adopted, there is no leakage and permanent distortion in the following test. vacuum-
pumping :759mmHg load voltage test: bear 2 times the oil pressure of oil conservator oil surface for 24 hours.
5.4 The structure of transformer is convenient for disassembly and change of bushing and porcelain element.
5.5 The oil drip valve is set on the bottom of oil tank, sampling valve is set in the middle.
5.6 collective gas connecting tube is fixed on the bushing hoist support.
5.7 Transformer is of full-sealed structure, the upper and down oil tanks are required to welded fully. 

6,Oil conservation tank 
6.1 Adopt capsule type, finger type oil level indicator oil conservation tank. 
6.2 The structure is convenient for internal cleaning, the capacity can ensure no oil overflow in 40 ambient
temperature with full load, and oil shall be seen from oil level indicator before put into operation in -25.
6.3 Oil conservation tank is equipped with oil-sealed moisture absorber. 

7,Safety protection device:
7.1 Gas relay is fixed in transformer, the standard complies with ZBK41004-89Gas relay.
7.2 There is enough and reliable pressure release device, and matched with oil spray pipe, the direction of oil
spraying is downward. 

8,Oil temperature measuring device:
8.1 There is pipe support of mercury thermometer, which is  set on the top of oil tank.
8.2 There is temperature controller,  the accuracy of thermometer complies with the related standard. Quantity
and technical requirement shall as per tender document. 

9,Each component  of transformer shall be prefabricated once in manufacture factory, marked, to ensure the
smooth procedure of site assembly. Before Ex-factory, inner core shall be check, and clean the fifth in
transformer.

Reference:

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 ºC . 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

Packing and Shipping
 

Packaging Details:

The accessories packed in plywood cases,the main body in nude.

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