Tianjin Ruiyuan Electric Material Co,.Ltd
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POLYURETHANE COATED COPPER LITZ WIRE 0.07x119 ENAMELED WIRE CLASS 155 FOR TRANSFORMERS
High frequency litz wire is made of single insulated copper wires twisted together.It is used in transformers and chokes to reduce the power losses that occur due to the eddy current and reduce the skin effect. Operating frequency determines the litz wire parameters and defines the diameter of a single wire. The higher operating frequency of inductive components, the smaller diameter of a single wire.Insulation of copper wires is made of polyurethane. This fact makes it easy to tin terminals of winding. High dielectric strenght can be achieved by one or multiple wrapping polyester tape (Mylar), polimide tape, kapton tape, etc. Despite this, the litz wire has an excellent flexibility. Usually litz wire is supplied in round cross-section. However it can be profiled and made in square or rectangular cross section to optimize the winding area.
Application of HF- litz wire causes minimalization of power loss and reduces heating of windings. Other advantage is size reduction and less weight of inductive component. Due to its numerous advantages litz wires are used in transformers, high frequency chokes, inverters, telecomunication and TV devices and inductive heaters
DESIGN
New design or recommmendation according to customer requirements for size,turns,current,power and environmental parameters.
APPLICATION
Induction coating hobs
RF transformers
RF transducers
E-Motors
SPECIFICATION
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Characteristics |
Technical requests |
Test Results |
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Sample 1 |
Sample 2 |
Sample 3 |
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1 |
Surface |
Good |
OK |
OK |
OK |
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2 |
Single wire outer diameter |
0.082-0.090 |
0.089 |
0.088 |
0.087 |
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3 |
Single wire inner diameter |
0.07±0.005 |
0.07 |
0.07 |
0.07 |
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4 |
Structure (Number/ Single wire inner diameter ) |
119/0.07 |
119/0.07 |
119/0.07 |
119/0.07 |
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5 |
Outer diameter |
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----- |
----- |
----- |
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6 |
Pinhole Test |
<20 |
0 |
1 |
0 |
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7 |
Breakdown Voltage |
≥1500V |
2400V |
2100V |
2200V |
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8 |
Immersion tin test |
410±5℃ 3S |
OK |
OK |
OK |
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