Rewinding

We can reproduce most any kind of AC or DC winding found in electrical machinery; from single coils or bobbins, to medium voltage (2300-4160VAC) stators. We produce random (low voltage-round wire) coils on our automatic machine or with manual machines for large heavy coils, or very small specialty coils. Medium voltage form (rectangular cross section wire) coils are sourced from one of several specialty manufacturers in the US or Canada. Form windings are sometimes used in the winding of DC armatures (or AC Rotors). Coils are hand inserted into re-insulated stators, rotors, or armatures. Complete windings are thoroughly tested using a winding analysis system that consists of insulation resistance, hi-pot and surge tests in addition to winding resistance in ohms. Armatures are tested with a high frequency “bar to bar” tester. Following testing, windings are impregnated with pour on epoxy, dip and bake varnish, or vacuum-pressure impregnation. For additional protection and structural integrity multiple layers of varnish can be built up by multiple impregnation cycles. We can also add anti-abrasion and other protective coatings to windings.

Rewind 1

High frequency generator rotor being varnished

Rewinding 2

Medium voltage AC stator before connections brazed

Rewinding 3

Medium voltage AC stator coil insertion

AC Low voltage shaker motor stator

AC Low voltage shaker motor stator

AC low voltage stator showing connections before brazing

AC low voltage stator showing connections before brazing

Close up of low voltage random windings in 24 pole stator

Close up of low voltage random windings in 24 pole stator

 DC Armature complete ready for varnish tank

DC Armature complete ready for varnish tank

Low voltage AC stator, and generator Exciter in curing oven

Low voltage AC stator, and generator Exciter in curing oven

DC motor field frame ready for connections

DC motor field frame ready for connections

Large low voltage AC stator coil insertion

Large low voltage AC stator coil insertion

DC Interpoles rewound ready for varnish tank

DC Interpoles rewound ready for varnish tank

 DC field coils before insulation wrap and installation on pole pieces

DC field coils before insulation wrap and installation on pole pieces