DDP Insulation Paper for Transformer

• Application: Insulators, Electrical Winding Insulation, Electrical Base, Shell, Switch Baseplate
• Type: Insulation Paper
• Chemistry: Inorganic Insulation
• Material: Paper
• Thermal Rating: Y 90
• Maximum Voltage: 20KV~100KV
• Model NO.: 0.08-0.25mmx960mm, 1000mm
• Classification: Inorganic Insulation Material
• Certification: ISO9001
• Color: Brown
• Brand: Chr
• Storage Life: 1 Year
• Size: 0.17,0.20,0.25,0.30,0.35mm
• Transport Package: Pallet
• Specification: 0.08MM 0.13MM 0.18MM 0.20MM 0.25MMx960MM, 1000MM
• Trademark: CHR
• Origin: China
• HS Code: 4811601000
• Production Capacity: 20mt/Week

Product Description

Diamond Dotted Paper
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,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...

Number	Index		Unit	Standard
1	Thickness &tolerance		mm	0.08±0.005 0.13±0.007 0.18±0.010 0.20±0.010 0.25±0.010
2	Density		g/cm3	0.85~1.10
3	Adhensive thickness of single side		μm	10~15
4	Water content		%	4.0~8.0
5	Oil absorbency		%	≥20
6	Adhensive strength	Ordinary state	kPa	≥650
		100ºC±2ºC		≥400
7	Pollution for transformer oil		-	Pollution-free(tan∮<0.001)
8	Tensile strength	MD	N/10mm width	≥60	≥110	≥160	≥180	≥230
		CD		≥30	≥50	≥70	≥80	≥100
9	Tear Index	MD	Mn	≥450	≥900	≥1350	≥1500	≥2000
		CD		≥500	≥1000	≥1500	≥1700	≥2300
10	Breakdown	In air	KV	≥0.88	≥1.37	≥2.00	≥2.10	≥2.25
		In oil		≥4.40	≥7.00	≥9.00	≥9.80	≥11.50