5. Conductor, Insulating Film and Appearance
5.1 Conductor
The conductor for class-2 shall be copper wire specified in JISC 3103-
Annealed
Copper Wires for Windings of Electric Machines.
5.2 Insulating Film
The insulating film of the wire shall be made by baking polyurethane
and over coated with polyamide insulating varnish for enameled wires
on the conductor uniformly. The film shall be harmless to the
conductor and shall have sufficient
durability.
5.3 Appearance
No scratches, to be smooth surface and uniform luster and hue, not sticky,
not to be readily scratched off by fingernail Testing Methods. The wire
shall be wind the bobbin, no cracks and dirt visible on appearance.
6. Test methods
6.1 Dimensions
This shall comply with 3.2.1.1of NEMA.MW-1000
6.2 Pinhole
This shall comply with 6.1 of JISC 3003
6.3 Flexibility
This shall comply with 3.3.1.1of NEMA.MW-1000
6.4 Adhesion
This shall comply with 3.3.1.1of NEMA.MW-1000
6.5 Resistance to abrasion
This shall comply with 3.59.1.1of NEMA.MW-1000
6.6 Breakdown Voltage
This shall comply with 3.8.1.1.2of NEMA.MW-1000
6.7 Resistance to out through
This shall comply with 3.50.1.1 of
NEMA.MW-1000
