The round aluminum enameled wire comprises aluminum round conductor which comprises a primer layer, a middle layer and a surface insulation layer, wherein the primer layer is an epoxy resin layer, the middle layer is a high temperature polyester layer, a polyester inferior amine paint layer or a modified polyester resin layer and the surface insulation layer is polyamide-imide paint layer.

LP industry mainly provides aluminium enamel-covered wire

Type	Thermal Class	Standard	Dimension
Polyesterimide overcoated with polyamide-imide enamelled Round Aluminium Wire	Class 200	IS 13730/IEC 60317	4 swg to 37 swg
Polyestermide Enamelled Round Aluminium Wire	Class 180	IS 13730/IEC 60317	4 swg to 37 swg
Polyester Enamelled Round Aluminium Wire	Class 155	IS 13730/IEC 60317	4 swg to 37 swg
Polyester Enamelled Round Aluminium Wire	Class 130	IS 13730/IEC 60317	4 swg to 37 swg

The 220 grades of enamel insulated aluminium wires of the novel paint production by using preparation and the assay such as the following table of original product main indexes:
220 grades of polyester-imide composite polyamides of line footpath 1.450mm acid imide enamelled round aluminium wire with major technique contrast table

Interventions Requested	Standard-required	Former check data	Existing check data
Pliability and tack stretch and the pole flexing test	3d, 10 circles do not ftracture	Paint film does not ftracture, does not lose tack	Paint film does not ftracture, does not lose tack
Thermal shock	240 ℃, 3d, 10 circles do not ftracture	Paint film does not ftracture	250 ℃, 3d, 10 circles do not ftracture
Percentage elongation	≥15％	28％	28％
Scrape lacquer: minimum scraping force in the average scraping force three times	≥7.15N ≥5.85N	10.59N 9.59N	12.49N 13.49N
Puncture voltage (room temperature)	≥5KV	9.6、9.6、9.7	12.2、10.6、10.4
Film integrity (30m)	Number of defects≤10	1	0
Remarks:	/	Carry out the IEC standard	Carry out the IEC standard

Enameled aluminum round wires used in motors, transformers, generators and electrical measuring instruments. 

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