Magnet Wire - Hitachi Metals

Magnet Wire

Selection and Use Directions for Magnet Wire

What is Magnet Wire?

Wire for winding used in electrical equipment is generally called magnet wire. Simply put, "Magnet wire is used for interchanging electrical energy with magnetic energy". Magnet wires are broadly divided into enamelled wire (coating insulation), covered conductor wire (fiber/film insulation), and combinations thereof. Both magnet wire types as well as their performance are quite varied. Below the most important features of magnet wires are listed: (a) Uniformity and degree of insulation (b) Good electrical characteristics such as dielectric strength and insulation resistance (c) Resistant coating to mechanical stress induced by bending, stretching, and friction (d) Heat-resistance (e) Resistant to solvents, chemicals and varnishes (f) Resistant to hydrolytic degradation (g) Stable when combined with insulating material (h) Resistant to water and moisture Any product will have particular strong properties in one or more of these features. Each type of wire has its own advantages and disadvantages. Therefore, it is important to consider operating conditions in order to select the correct product.

What is Magnet Wire? Enamelled wire

High-strength, self-lubricating heat-resistant wire

KOMAKI Series

Inverter surge resistant enamelled wire

KMKED

High heat-resistant enamelled wire

IMWAD

High reliability rectangular enamelled wire

AIW rectangular wire Enamelled wire: Type, symbol, specification number, and feature Performance comparison of enamelled wire Covered conductor wire Covered conductor wire: Type, symbol, specification number, and feature Performance comparison of covered conductor wire Coil winding: Operational precautions Coil forming: Operational precautions Storage of magnet wire Storage period Status of UL acquisition Dimensional table of magnet wire Product label and manufacturing history number Bobbin or pack of magnet wire

Enamelled wire

High-strength, self-lubricating heat-resistant wire

We work to meet current demands.

Easier wire insertion into slots. Reduction of external damage during winding. Making the coil more compact. Maximizing the slot fill factor level.

Advantages

z"KOMAKI? Series" enameled wire is suitable for highly compact coils suited in particular for high-efficiency motors while preserving

energy.

z"KOMAKI" wire delivers much stronger adhesion with impregnation varnish compared to conventional self-lubricated enamelled wire.

Application

zMotors for general use, electrical equipment, air cooling,

and other uses with highly slot fill factor.

Part name

KMK?-20E

KMK?-22A

Comparison of slot fill factor

Coating material

Polyester-imide / Polyamide-imide

Polyamideimide wire

Heat resistance

200?C

220?C

Thermal endurance

"*8 ,.,"

55% Mechanical Strength analysis

70%

".897 ,.,&

Thermal endurance (hours) Abrasion breaking load (N)

Temperature(?C)

KMK-20E AMW-XV

Film thickness (m)

Coil windability evaluation equipment

Enamelled wire

Coil inserting force

100

KMK-20E AMW-XV

Inserting force (Index*)

0

50

60

70

Space factor (%)

Number of pin holes after inserting coil

100

KMK-20E AMW-XV

Number of pin holes (Index*)

0

50

60

70

Space factor (%)

* Index when 70% of the AMW-XV space factor is 100.

General properties Example of characteristic (Type 1 with a diameter of 0.85 mm?)

Polyester-imide / Polyamide-imide wire

Polyamide-imide wire

*UFN

,.,&

".897

,.,"

"*8

Film thickness (mm)

Flexibility

No elongation 20% elongation

Cut-through resistance [Heating-up method, ?C]

Abrasion

Reciprocating type (number of times)

Uni-directional type (N)

Static frictional coefficient

Adhesive strength of varnish (N) (epoxy)

E

E

E

E

E

E

E

E

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