Electrical composite coaming board

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Electrical composite coaming board

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We produce electrical composite coaming board by multilayer composite of polyester film and non-woven fabric,pecial heat resistant adhesive as the bonding material.And then surface treatment with special resin.Electrical composite coaming board is mainly used as the sleeve between high-low voltage coil in dry type transformer.

Note:
We suggest roll width as 780,880,1040,1240mm.It can also be customized according to customers’ requirements.

Storage:
It should be upright in a dry ,airy and clean room, and keep away from the fire,heating and sunshine. The storage period is 12 months, qualified products exceeding the storage period can still be used.

No.	Property		Unit	Demand
1	Thickness and tolerance		mm	0.5士0 . 045	0 . 83士0.066	0 . 9士0 . 09
2	Quantify and tolerance		g/m²	622 士 68	1085 士 87	1120 士 112
3	Thickness of film		μm	350	350	350
4	Film number of layers		V	1	2	2
5	Tensile strength	MD	N/10mm	≥350	≥600	≥600
		CD		≥350	≥600	≥600
6	Elongation（No bending）	MD	%	≥30	≥50
		CD		≥30	≥50
7	Breakdown voltage	No bending	Kv	≥18	≥28	≥28
		Bending		≥16	≥23	≥23
8	Temperature Index（ TI )		℃	≥155