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Insulation Dotted Film

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Product Class：VOLTAGE & CURRENT TRANSFORMER INSULATION

Insulation Dotted Film is the insulation material made by coating special modified epoxy resin on the electrical polyester film,and baked it to semi-cured state.

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Product Description

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Insulation Dotted Film is the insulation material made by coating special modified epoxy resin on the electrical polyester film,and baked it to semi-cured state.For the resin coating layer on the film is points but not a whole,the air and liquid can easy circulate in the passages between the resin coating,ans this will minimize the damage of corona and partial discharge.Diamond dotted polyester film can be used as layer insulation material in the insulation system of air or oil,and it mainly used as layer insulation or turn-to-turn insulation of six sulfur hexafluoride mutual inductor and transformer.

Product Solidification Conditions:
Keep it 90℃±5℃ about sixteen hours, or keep it 110℃±5℃ about .six hours to be solidified.

Storage:
Store in a dry,airy and clean room, temperature less than 25℃,and keep away from high temperature and sunshine. The storage period is half a year, qualified products exceeding the storage period can still be used.

No.	Property		Unit	Requirements
				DPRCF-05	DPRCF-07	DPRCF-10
1	Film thickness		mm	0.05±0.005	0.07±0.010	0.10±0.010
2	Tensile strength		Mpa	≥150
3	Single-side coating thickness		μm	15~20
4	Quantitative	Single coated	g/cm2	76±2	102±2	144±2
		Double coated		82±3	108±3	150±3
5	Hot shrinkage		%	≤3
6	Breakdown voltage		V	≥6000	≥7500	≥9000
7	Welding strength		Kpa	≥35