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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