Insulation DDP Paper for Distribution Transformer

• Customization: Available
• Application: Transformer, Electrical Winding Insulation
• Color: Brown
• Model NO.: ddp
• Material: Krfat Paper and Epoxy
• Maximum Voltage: 20KV~100KV
• Thermal Rating: Y 90
• Enter Attribute Here (e.g.: Size): Enter Value Here (e.g.: 12 Inches)
• Brand: Xincheng
• Transport Package: Wooden Pallent
• Specification: Iec60317
• Trademark: xincheng
• Origin: China
• Production Capacity: 1000tons/Month

Product Description

Made of kraft paper coated with heat curable epoxy resin, the epoxy adhesive is applied to both sides of the paper in a diamond pattern consisting of 9.5mm X 9.5mm diamonds with 15.9mm center spacing







The Diamond Dotted Paper, alias such as: Epoxy adhesive diamond paper, Diamond Dotted Presspaper, Double sided Diamond Pattern Paper, DDPP, DPRCP, D. D. P, DPP, Diamond Dotted insulating Paper, Varnished Paper, etc.

It is to be used in oil-immersed transformers for the insulation between of coils. On the insulation layer, there is a layer dotted epoxy resin that will be changed with high temperature change that is to be called as felt...

It is a kind of material with inertia, dry and no conglutination at normal temperature (below 30 degree C). The Diamond Dotted paper will make the electric conductor forever felt up as a hard unit under the high temperature by its internal latency substance. When the temperature is rising up to 90 degree C, The diamond dotted paper begins one-off thaw and then one-off solidification. When to keep the temperature at 90 degree C for 90 minutes, the epoxy resin would paste on neighboring cable and paper safely. The felt intensity is as high as to 70psl at 100 degree C (The value at least is equal to 0.275Mpa, America standard)

Typical properties of Diamond Dotted Paper
Specified Properties	Units	Standard
Thickness Tolerance	inch	0.003	0.050	0.070	0.010	0.015	0.020
	Mm	0.076	0.130	0.180	0.250	0.380	0.500
Thickness tolerance(base paper)	%	±10
Width tolerance	mm	± 5
Apparent Density	g/mm^3	0.95 - 1.15
Tensile strength Min  Machine direction	N/mm2	70	70	80	80	80	80
corss machine direction		35	35	35	35	35	35
Elongation MD	%	2
CD		4
Dielectric breakdown (volts/layer, dry test)	volts	750	1100	1400	2100	2900	3100
No pollution oil of transformer	%	Non pollution
Moisture Content	%	4.0-8.0,all thickness
PH water extract	%	6.0-8.0, all thickness
Ash Content Max	%	1% maximum
Bond Strength Min	kPa	450
Coating thickness per side	mm	0.006 to 0.012
All date shown represents nominal o typical vlues only and should not be construed or maximun unless specifically stated