Specifications

Specifications
1.Class E
2.Thickness:.0.08mm, 0.13mm,0.18mm,0.25mm,0.40mm,0.50mm
3.Colour:Red ,Brown

DDP DIAMOND DOTTED PAPER for transformer

diamond dotted paper

DDP for transformer

Features and Applications:

-Good dielectric properties and mechanical propeties after being heat-solidification.

-As interturn insulation for coils of transformers interlayer insulation of distribution transformers.

-It is to be used in oil-immersed transformers for the insulation between of coils aDiamond dotted paper(DDP) is made of insulating paper with diamond-shape epoxy resin dotted on both sides. The epoxy used in D.D.P contains a kind of incubative hardener material. It is a dry and crisp material at normal temperature.

This product has good dielectric properties and good mechanical properties after heat solidificationnd between layers of oil immerged power distribution transformers.

 

 

DDP
Item	Index.		Unit	Value
1	Thickness and tolerance		mm	0.08±0.005/0.13±0.007 0.18/0.20/0.25±0.010
2	Density		g/cm3	0.85~1.10
3	Single thickness		μm	10~15
4	Moisture content		%	4.0~8.0
5	Oil-absorption		%	≥20
6	Bond strength	at room temp.	kPa	≥650
		100°C±2°C		≥450
7	Pollution for transformer oil		-	no pollution(Δtanø<0.001)
8	Tensile Strength	lengthwise	N/10mm	≥60	≥110	≥160	≥180	≥230
		crosswise		≥30	≥50	≥70	≥80	≥100
9	Tearing Strength	lengthwise	Mn	≥450	≥900	≥1350	≥1500	≥2000
		crosswise		≥500	≥1000	≥1500	≥1700	≥2300
10	Breakdown voltage	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