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Transformer Enameled Copper Wire Using IEC Standard Class 155/180
Electric motors contain coils to produce the required magnetic fields. For a given size of motor frame, high conductivity material reduces the energy loss due to coil resistance. Poorer conductors generate more waste heat when transferring electrical energy into kinetic energy.
Because of its high electrical conductivity, copper is commonly used in coil windings, bearings, collectors, brushes, and connectors of motors, including the highest quality motors. Copper's greater conductivity versus other materials enhances the electrical energy efficiency of motors. For example, to reduce load losses in continuous-use induction-type motors above 1 horsepower, manufacturers invariably use copper as the conducting material in windings. Aluminium is an alternate material in smaller horsepower motors, especially when motors are not used continuously.
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Item
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Transformer Enameled Copper Wire Using IEC Standard Class 155/180
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| Key word | Transformer Enameled Copper Wire Using IEC Standard Class 155/180 |
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Coating
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Polyurethane
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Thermal grade
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155
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Characteristics
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Technical requests
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Test Results
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Sample 1
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Sample 2
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Surface
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Good
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OK
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OK
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Bare Wire Diameter
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0.080±0.002
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0.45
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0.45
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Coating Thickness
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≥ 0.008 mm
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0.011
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0.012
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Overall Diameter
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≤ 0.094 mm
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0.091
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0.092
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Conductor Resistance
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≤ 3.608 Ω/m
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3.456
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3.443
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Elongation
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≥ 16 %
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19
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19
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Breakdown Voltage
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≥ 425 V
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1578
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1496
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Pinhole Test
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≤ 5 holes/5m
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0
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0
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Continuity
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≤ 40 holes/30m
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0
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0
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Test Items
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Technical Requests
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Results
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Adhesive
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Coating layer is good
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OK
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Cut-through
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200℃ 2minsno breakdown
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OK
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Heat Shock
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175±5℃/30minno crack
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OK
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Solder Ability
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390± 5℃ 2SecNo blister, no expansion, no shed
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OK
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