Oil-Immersed Transformer Insulation Material Epoxy Coated Insulation Paper

• Customization: Available
• Application: Electrical Insulation
• Color: Brown
• Material: Mineral Wool
• Maximum Voltage: 20KV~100KV
• Thermal Rating: F 155
• Usage: Insulation Protection
• Chemistry: Hybrid Insulation
• Transport Package: Paper
• Specification: Customize
• Trademark: custom
• Origin: China

Product Description

Product introduction: This product is an insulating material made by coating special modified epoxy resin on electrical insulation paper. The product is used for interlayer insulation and interturn insulation of oil-immersed power transformers. When used, the coating layer begins to melt at a certain temperature during the drying process of the coil, producing an adhesion effect, and begins to solidify as the temperature rises, so that the adjacent layers of the winding are reliably bonded into a fixed unit. The bonding of epoxy resin prevents the displacement of the winding layers during short circuit.

Technical Parameters
Substrate thickness		mm	0.08±0.005	0.13±0.007	0.18±0.010	0.38±0.020	0.50±0.030
Substrate tightness		g/cm³	0.85~1.10
Single-sided adhesive thickness		μm	10~15
Moisture		%	4.0-8.0
Oil absorption		%	≥60
Bond strength	Normal	kpa	≥60
	100ºC± 2ºC
Tensile strength	Vertical	N/10mm	≥60	≥110	≥160	≥180	≥230
	Horizontal	Width	≥30	≥50	≥70	≥80	≥100
Tear strength	Vertical	nN	≥450	≥900	≥1350	≥1500	≥2000
	Horizontal		≥500	≥1000	≥1500	≥1700	≥2300
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
Product curing Conditions			Heat to 90°C ± 5°C, keep for 3 hours, then heat to 125°C ± 5°C, keep for 6 hours and solidify