Significance

There is very low voltage difference between turn to turn (approx 2V) hence less Insulation properties are required. Cotton, soaked in epoxy resin and cured, gives required insulation and toughness to the winding. It has better performance than Enameled wires for this application. As during the grinding application the cotton covering does not chip off. This is mainly used in variacwindings above the range of enameled wires windings (thicker wires)

Product Range

• SWG 0 to 15 (8.23mm to 1.8mm)

• 10 to 75sq mm copper (Width 3mm to 25mm-Thickness 1.5mm to 4mm)

Insulation

First layer of Fibre glass yarn covered with Second layer of cotton yarn

Insulation Thickness

Can be supplied in range of 0.30 to 0.80 as per customer requirement.

Insulation Condition

Dry, wrapped around tightly over copper conductor without varnish treatment.

Specification

As per IS:7391 part 1 for round copper wires

Application

This product is exclusively used in Dimmer stat windings of 40, 50, 75, 80, 90Amp or even higher capacity. SWG 6, 9, and 11 are commonly used for this application. The wires are wound in form for toroid windings, which is further dipped in Epoxy resins and cured/baked to form a solid, hard, tough insulation Variac Dimmer Coil.

Other Applications

Variac Dimmer Coil, Welding Machines & Rectifiers, Electroplating Rectifiers, Battery Chargers, and High frequency coils.