DDP Insulation Paper for Transformer

• Application: Transformer and Motor
• Type: Insulation Paper
• Chemistry: Organic Insulation
• Material: Wooden Pulp
• Thermal Rating: A 105
• Maximum Voltage: 20KV~100KV
• Model NO.: DDP
• Certification: ISO9001
• Color: Brown
• Brand: Zhufeng
• Width: 960mm
• Transport Package: Pallet
• Specification: 0.125mm-0.50mm
• Trademark: Zhufeng
• Origin: China
• Production Capacity: 20mt/Week

Product Description

Diamond Dotted Insulation Paper( DDP) is made of electrical insulation paper with Diamond-shape epoxy resin dotted in both sides. The epoxy resin used in DDP contains a kind of incubative hardener material, it is a dry ad crisp material at normal temperature(below 35degree)

This product has good dielectric properties and good machenical properties after being heat-solidification. It can be used as coils and between layers of oil immerged power and distribution transformers.

Thickness; 0.08mm 0.13 0.15 0.17 0.20 0.25 0.38mm
Width: 960mm 1000mm

Product Description

Insualtion Cable Paper/DDP Papers/Diamond Dotted Paper

The papers have good dielectric properties and good mechanical properties after heat solidification. It is to be used in oil-immersed transformers for the insulation between of coils and between layers of oil immerged power distribution transformers.
Diamond pattern 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 x9.5mm diamonds with 15.9mm center spacing.
 

• Insulation class A (105 °C) according to according to IEC 641
• Kraft paper, 100% sulphate pulp
• High purity and mechanical strength
• Color natural
• Baked enamel coating: Epoxy resin , rhombic, one or both sides
• Good compatibility with liquid dielectic after the baked enamel coating has hardened.
• Care should be taken that the that the layers to be baked remain closely pressed against each other during baking time
• Thckness: 0.08/0.13/0.20/0.25
• Width: 10--960/1120/1470/1500.etc

 

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		μ m	10~15
4	Water content		%	4.0~8.0
5	Oil absorbency		%	≥ 20
6	Adhensive strength	Ordinary state	kPa	≥ 650
		100 degree C± 2		≥ 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