|
Name |
Type |
Heat Resistance Classification |
Usage |
Remarks |
|
Enameled Wire of Polyester Resin (E.W.) |
Type 1 |
/ |
It is widely used in relay coils of telephone exchanges due to its small size. It can be used in relay coils of communication equipment, coils for lighting fixtures and coils for control equipment. |
1. UEW enameled wire can be colored. |
|
Enameled Wire of Polyvinyl Formal (P.V.F.) |
Type 0 |
(105°C) |
It has excellent mechanical properties and can be used in electric motors, automotive electrical components, general rotating machines, motors, electric fans and transformer coils. |
Type 1 is the thinnest. |
|
Enameled Wire of Polyurethane (U.E.W.) |
Type 1 |
Type 1: E |
It is used for weak-current equipment, especially suitable for high-frequency communication machinery, intermediate-frequency and high-frequency coils. |
/ |
|
Self-Bonding Polyurethane Enameled Wire (S.B.W.) |
Type 0 |
Type 0: |
Coils of communication instruments, coils of electrical equipment, coils of electrical meters, coils for TV deflection, coils for speaker audio. |
/ |
|
Enameled Wire of Polyester (P.E.W.) |
Type 0 |
Type 0: |
It is suitable for electric motors and transformers that require good thermal characteristics, coils of various electric motors, coils of various transformers, coils of enclosed electric motors, coils of motors with slightly higher temperature resistance. |
/ |
|
Enameled Wire of Polyurethane Nylon Coated (UEW-NY) |
Type 1 |
Type 1: (120°C) |
It is suitable for machinery with good abrasion resistance in high-speed winding operations. |
/ |
|
Enameled Wire of Polyimide Polyester (I.E.W.) |
Type 0 |
Type 0: |
It is suitable for motor coils, dry-type transformers, connectors of temperature class F, and coils of sealed motors in refrigerators or air conditioners. |
/ |
|
Enameled Wire of Polyimide Amide (A.I.W.) |
Type 1 |
Type 1: A |
It is suitable for coils of H-class motors, transformers, connectors, etc. |
/ |
Enamelled Wires and Their Characteristics
1. Polyester Enamelled Wire (P.E.W.)
This wire uses heat-resistant Terephthalic Polyester Resin as the primary material for its insulating enamel coating.
Characteristics:
Superior Heat Resistance: Better than Polyvinyl Formal (P.V.F.) and Polyurethane (U.E.W.) enamelled wires.
Excellent Solvent and Chemical Resistance: Except for alkaline substances.
Strong Mechanical Properties: Comparable to P.V.F. enamelled wires.
High Dielectric Constant: On par with U.E.W. enamelled wires.
Enhanced Alkali and Moisture Resistance: Superior to P.V.F. enamelled wires.
2. Polyurethane Enamelled Wire (U.E.W.)
Made using Polyurethane Resin, this enamel is unique for its ability to dissolve quickly above 300°C, enabling soldering without prior insulation removal.
Characteristics:
Exceptional Heat Resistance: Outperforms P.V.F. wires, classified as E-grade.
Efficient Soldering: Eliminates the need for peeling insulation, boosting productivity.
Comparable Mechanical Strength: Matches that of P.V.F. enamelled wires.
Limited Solvent Resistance: Slightly less resistant to alcohol-based solvents but remains practical for most applications.
3. Polyvinyl Formal Enamelled Wire (P.V.F.)
One of the earliest developed synthetic enamelled wires, it employs Polyvinyl Formal Resin as its base material, with added hardening resins.
Characteristics:
Strong Insulation: Provides outstanding thermal resistance and durability.
Excellent Solvent and Chemical Resistance: Comparable to P.E.W., except for alkalis.
Good Mechanical Strength: Similar to other synthetic enamelled wires.
High Dielectric and Inductive Performance: Comparable to U.E.W. wires.
Enhanced Moisture and Alkali Resistance: Reliable for various environmental conditions.