OVERVIEW of Magnet Wire |
Magnet Wire / winding wire is an insulated copper (or aluminum) electrical conductor used in motors, transformers and other electromagnetic equipment. When wound into a coil and energized, magnet wire creates an electromagnetic field.
Types of Magnet Wire
PIW (Polyimide) - Thermal Class: 220oC - Best of all enameled wires in overload resistance.
Applications are hermetic & sealed units, high temperature continuous duty coils & relays. PIW is enameled with a polyimide resin having the highest heat resistance of the organic polymers
made by reaction of aromatic tetracarboxylicacid dianhydride and aromatic diamine. PIW is very
reliable in performance because it has excellent cut-through characteristic, over-load
characteristic, and heat shock resistance.
PEWN (Polyester Nylon) - Thermal Class: 155oC
Applications are general purpose motors, portable generators, dry-type transformers,
electromagnetic solenoid coils, & motors for home use. Enameled with a polyester resin of the terephthalic acid group, PEWN is used as a general purpose magnet wire for many applications.
HPEWN (Polyester Nylon) - Thermal Class: 180oC
Applications are general purpose motors, portable generators, dry-type transformers, & electronics
where solderability is not desired. HPEWN is a film insulation with a modified polyester basecoat and a nylon topcoat. It has become the standard of non-hermetic, fractional horse-power motors.
FORMVAR (Polyvinyl Formal) - Thermal Class: 105oC
Applications are oil-filled transformers, motors, random wound coils, & solenoids.
Enameled with a polyvinyl formal resin, this wire excels in mechanical, electrical, and chemical
properties. It can be coiled by automatic winding machinery and has a wide range of applications
as a Class A general-purpose wire.
UEWN (Polyurethane Nylon) - Thermal Class: 130oC / 155oC
Applications are small motors, electronic relays, & encapsulated coils.
• UEW is a polyurethane base insulation enamel which allows conductor soldering without prior
removal of the film from the wire. UEWN is a combination of polyurethane/polyamide insulation.
The nylon provides improvement in windability and use in more severe winding operations.
HPEAIW (Polyester Polyamide-imide) - Thermal Class: 200oC
Applications are heat-resistant motors for refrigeration, general heat-resistant motors &
generators, dry-type transformers, oil-immersed transformers, & electrical appliances for use at
hermetic, highly humid places.
AIW (Polyamide-imide) - Thermal Class: 220oC
Applications are motors for refrigeration, motors for electric tools, heat-resistant motors, dry-type
transformers, & oil-immersed transformers. Enameled with a polyamide-imide resin, AIW has extremely well-balanced properties as a heatresistant magnet wire. It is the highest of all enameled wires in film strengths and excels in resistance to overload, hydrolysis. AIW is therefore recommended for use especially in appliances in which it is subjected to rigorous coiling and in hermetic appliances used at high tempertures.
EIAIW (Polyester-imide Polyamide-imide) - Thermal class: 200oC
Applications are heat-resistant motors for refrigeration, general heat-resistant motors &
generators, dry-type transformers, oil-immersed transformers, & electrical appliances for use at
hermetic, highly humid places. EIAIW is an enameled wire for heat and refrigerant resistant applications, with a double coating composed of a lower layer of polyester-imide resin having a high heat resistance and an upper
layer of polyamide-imide having a high refrigerant resistance and windability
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FEATURES AND BENEFITS of Magnet Wire |
Specifications of Magnet Wire:
Magnet wire plays a critical role in three areas of energy transformation: electrical to electrical, electrical to mechanical, and mechanical to electrical. Electrical to electrical transformation involves transformers, which are used to transfer power. Transformers are used for power generation by utility companies, for power voltage conversion, and in electrical controls in industrial and home uses. Electrical to mechanical transfer is necessary for motorized appliances, automobiles, industrial machinery, and residential and commercial HVAC systems. Magnet wire is a key component in each of these applications. Mechanical to electrical transformation occurs when machine power is converted into electricity. This type of transformation includes generators, which turn mechanical power into electrical energy through the use of magnet wire. Besides its uses in energy transformation, magnet wire is vital to a wide range of communications applications. Magnet wire is used in coils in products such as computers, telephones, cell phones, video games and televisions.
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![Magnet Wire]( "Magnet Wire")
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