For winding in oil-cooled transformer, we offer a wide range of winding wires whose insulation is compatible with synthetic and in mineral-oil based cooling agents.  Paper-insulated flat wires are manufactured as individual conductor or as multi-conductor (twin or triple). Technical specification should be according to IEC60317-27, GB/T7673

PAPER INSULATED FLAT WINDING WIRE

PAPER COVERED COMPOSITE WIRE

PAPER COVERED COMPOSITE WIRE

Production Description     
For winding in oil-cooled transformer, we offer a wide range of winding wires whose insulation is compatible with synthetic and in mineral-oil based cooling agents.

Paper-insulated flat wires are manufactured as individual conductor or as multi-conductor (twin or triple). Technical specification should be according to IEC60317-27, GB/T7673

Material
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.

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%

Insulated Paper
We can manufacture with basically any type of insulated paper available such as: Cellulose paper, compound paper, paper with adhesive coating. Kraft paper

Wrapping Method
In order to meet different customer and application demands, we can use different

wrapping methods according to the paper insulation layer construction.
Method 1: Butt-wound Wrapping
Method 2: Overlapped Wrapping
Method 3: Interlocked Wrapping

 Number of Wire Specification/mm  Inner Insulated Layer  Conductor Outside Insulated Layer
 1 Width 4.00~18.50   3×4 layers
 Thickness 1.00~10.00
 2  Width 4.00-18.50 4 layers  3×4 layers
 Thickness 1.00-4.00
 3  Width 4.00~18.50  4 layers  3×4 layers

The table show max width, thickness, layer of paper and capacity, not for each product.