Edge-Size Winding Enameled Wire

Henan GNEE Electric Co., Ltd. is one of the most reliable manufacturers and suppliers of edge-size winding enameled wire in China. If you're going to buy customized edge-size winding enameled wire made in China, welcome to get quotation from our factory. Quality products and reasonable price are available.

Thermal class:180(H),200(C),220 Grade(C+)

Dimension:A:1.0mm--7.0mm;B:1mm--25mm

Standard:GB IEC NEMA JIS,also customized according to customer standards.

Packaging Spools:‌

Acceptable spool sizes range from 250mm (Inner Diameter) x 300mm (Outer Width) to 250mm (Inner Diameter) x 630mm (Outer Width)

‌Product Application:‌

Suitable for windings in transformers, reactors, power supplies, PV inverters, generators, and other electrical machinery equipment.

With a solid technical background, GNEE Group offers a comprehensive range of insulated winding wire, which provides a solution for every electric motor, transformer and coil manufacturer.

The GNEE magnet wire manufacturing capacity range covers specialised manufacturing of bare and insulated wires for electrical engineering purposes as follows:

• Enamelled copper and aluminium round wire from diameters 0.05mm to 5.00mm
• Bare copper and aluminium rectangular strip, finished section from 1.00mm to 5.00mm thickness to width 3.00mm to 20.00mm
• Enamelled copper and aluminium rectangular strip, finished section from 1.00mm to 5.00mm diameter, width 3.00mm to 20.00mm

Choice of Conductor

Copper wire is the most common choice as conductor used throughout the Electrical Industry. Electrical conductivity is the most important characteristic of any conductor. Choices are usually restricted to unalloyed pure metals rather than to alloys.

For equal diameters, aluminium, the second choice of conductor, has about 61% greater resistance than copper. Furthermore, aluminium has a lower thermal conductivity, which reduces the efficiency of cooling by thermal conduction to heat sinks or by convection of moving air.

When considering volume, particularly in small sealed motors, copper is a more efficient material.

A comparison between copper and aluminium

Enameled

Polyurethane (PUR) Insulation class: F (155°C)

A tough and flexible coating with good dielectric strength which offers solderability at low temperatures without prior removal of the enamel. The dissipation factor of PUR enamelled wire is low and changes little, even at high frequencies or in humid conditions.

However, it should be noted that PUR is not compatible with all impregnating varnishes and it does have a limited shelf life.

The common applications for PUR enamelled wire are in low power motors and transformers operating at low temperatures, telecommunication coils and meters.

Solderable Polyester-imide (PEI-S) Insulation class: H (180°C)

This enamel offers the high thermal and solvent resistance advantages of polyester-imide with the additional benefit of solderability without the requirement of stripping.

First class electrical and mechanical characteristics plus compatibility with impregnating varnishes make the PEI-S the preferred choice in most traditional PUR applications, such as low and medium power motors, transformers and relays.

Polyester-imide (PEI) Insulation class: H (180°C) A high performance coating, having a broad, almost universal application. PEI not only offers good dielectric strength, flexibility and abrasion resistance, but also high thermal resistance, improved aging resistance and increased production speed. State-of-the-art PEI enamels are suitable for use in hermetic motors and oil cooled transformers.

Applications for PEI enamelled wire include motors, ballasts, chokes, transformers and general electrical assemblies working at high temperatures.

Polyester-imide with Amide-imide Top Coat (PEI-AI) Insulation class: H+ (200°C)

An amide-imide coating on top of a polyester-imide (PEI) base enamel offers high abrasion resistance and better relative friction so that the processing capability (windability) is improved. Also, it offers excellent dielectric strength along with significantly better thermal and chemical resistance.

PEI-AI is well suited to high speed and abrasive winding processes and in electrical assemblies that are stressed both mechanically and thermally during normal operation. Applications include high temperature hermetically sealed motors, special transformers, chokes and ballasts.

Polyester-imide with Bondable Top-coat (PEI-B)

A thermoplastic coating on top of a polyester-imide base enamel offers self-bonding hardening. Resistance heating is the best method for bonding coils using this enamel.

To maintain good bond strength it is recommended that windings do not operate at temperatures exceeding 155°C.

Initially for use in the communication industry, PEI-B is applicable where no support or former is used in the construction of coils. Also suitable in relay coils, yoke coils, solenoids and in open motors.

Thermal Class

Thermal Class determinations are made by testing at least ten (10) twisted pair samples of enamelled magnet wire to a series of elevated temperatures. Samples are removed periodically and subjected to a non-destructive proof voltage test. If complete failure is not detected the samples are returned to the oven after noting the number of failures. The individual failures at a given temperature define the average life at that temperature.

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