Class 155 Polyester Glass Fiber Covered Heavy Film-Insulated Rectangular Copper Magnet Wire

Insulating Material

The fiber covering shall consist of a combination of polyester and glass fibers.

The glass fibers shall be electrical-grade continuous-filament glass yarn.

The polyester fiber shall be a high-grade yarn resulting from the linear polymerization of ethylene glycol and terephthalic acid.

The maximum content by weight of polyester fiber in the yarn shall not exceed 50%. If underlying film coating is used, it shall have at least a class 130 rating and comply with the specification of Polyester Film-Insulated Rectangular Copper Magnet Wire Thermal Class 155. The polyester glass fiber covering shall be wrapped firmly, closely, evenly, and continuously around the wire. The polyester glass fiber covering shall be unvarnished and fused.

Thermal Class

155℃

Conductor

Rectangular Copper Magnet Wire

Dimension

DIMENSIONS

Rectangular Wire:Radii in accordance with 0.51-0.99mm (Full Rounded Edge)Thickness tolerances in accordance with ±0.001mmThickness Range: 1.016-7.341mmWidth tolerances in accordance with ±0.025-0.076mmWidth Range: 2.057-16.535 mm

Table 1 Increase in Dimensions (Inches)

Polyester Glass Fiber Covering OverHeavy Enamelled Rectangular Wire*						Polyester Glass Fiber Covering OverQuad Build Enamelled Rectangular Wire*
Single Covering Heavy Film + Single Polyester Glass Fiber			Double Covering Heavy Film + Double Polyester Glass Fiber			Single Covering Quad Film + Single Polyester Glass Fiber			Double Covering Quad Film + Double Polyester Glass Fiber
Min.	Nom.	Max.	Min.	Nom.	Max.	Min.	Nom.	Max.	Min.	Nom.	Max.
0.0070	0.0085	0.0100	0.0110	0.0135	0.0160	0.0090	0.0105	0.0120	0.0130	0.0155	0.0180
0.0070	0.0085	0.0100	0.0038	0.0140	0.0170	0.0090	0.0105	0.0120	0.0058	0.0160	0.0190
0.0080	0.0095	0.0110	0.0120	0.0150	0.0180	0.0100	0.0115	0.0130	0.0140	0.0170	0.0200
0.0080	0.0110	0.0120	0.0130	0.0160	0.0190	0.0100	0.0120	0.0140	0.0150	0.0180	0.0210
0.0080	0.0110	0.0120	0.0140	0.0170	0.0200	0.0100	0.0120	0.0140	0.0160	0.0190	0.0220
0.0090	0.0115	0.0130	0.0140	0.0175	0.0210	0.0110	0.0130	0.0150	0.0160	0.0195	0.0230

General Requirements

Properties	Requirement
ADHERENCE AND FLEXIBILITY	Single or Double with underlying film: no cracks visible in the film insulation after 20% elongation. Examine with normal vision and without removing the polyester glass fiber covering. NOTE—The minimum thickness of the polyester glass fiber covering is 35% of the maximum increase in dimensions calculated from Table 1
ELONGATION	Not less than 32% for a thickness of 0.049 in. (1.25 mm) and greater, or 30% for a thickness less than 0.049 in. (1.25 mm)
SPRINGBACK	Polyester glass fiber covered Heavy film-insulated: not greater than 5.5º
DIELECTRIC BREAKDOWN	Not less than 90 V/mil (3543 V/mm) of the minimum thickness of the glass fiber covering on one side plus the minimum breakdown given in Table 36 for the film-insulated wire, if applicable. NOTE—The minimum thickness of the glass fiber covering is 35% of the maximum increase in dimensions calculated from Table 1