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Diamond Dotted insulation paper for transformer winding

With the good dielectrical and mechnical properties after heat solidification, it is widely used as the layer and circle insulating material in the fields of transformer and mutual inductor.

 

E-mail:jiangqian@ztaero.com


Description:

It is an insulation material which Coating modified epoxy resin as diamond-shape and baking on the electrical insulation paper. Widely used in the oil-immersed transformers and mutual inductors’ layer insulation and turn insulation. When using, the coating layer begin to melt during the coil drying process at a certain temperature. resulting adhesion. As the temperature rises again curing, make the adjacent layers of the winding reliably bonded into a fixed unit. The bonding strength of the epoxy resin is sufficient to prevent the displacement of the various layers of the winding when short circuit, so as to ensure the long-term mechanical and electrical properties of the insulation structure.

Specifications:

Thickness: 80um(0.08mm),130um(0.13mm),180um(0.18mm),200um (0.20mm)    250um (0.25mm)

width:  1000 mm or cut as user’s requirements.

Roll diameter: 250~300mm  Single roll weight: about 45~60Kg.

         

Technical parameters

Standard: JB / T1004.3-2004

No. Project Unit 0.08 0.13 0.18 0.20 0.25

Index
1 Thickness & tolerance mm 0.080±0.005 0.130±0.007 0.180±0.010 0.200±0.010 0.250±0.010
2 Density g/m2 0.85-1.1
3 Moisture content % 4.0-8.0
4 Water extraction  PH 6.5-8.5
5 Ash content % ≤1.0
6 One side adhesive thickness µm 6-12
7 Oil absorbency % ≥20

 Transformer oil pollution No pollution
9 Bond strength Normal KPa ≥650

100℃±2℃

≥400
10 Tensile Strength MD N/10mm ≥60 ≥110 ≥160 ≥180 ≥230

CD

≥30 ≥50 ≥70 ≥80 ≥100
11 Elongation MD % ≥2.0

CD

≥4.0
12 Tear strength MD MN ≥450 ≥900 ≥1350 ≥1500 ≥2000

CD

≥500 ≥1000 ≥1500 ≥1700 ≥2300
13 Breakdown voltage In air KV ≥0.8 ≥1.37 ≥2.00 ≥2.10 ≥2.25

In Oil

≥4.00 ≥7.00 ≥9.00 ≥9.80 ≥11.50
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