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How is a dry-type transformer produced?
Steel cutting
Steel cutting
The use of cold-rolled grain-oriented silicon steel sheets helps reduce hysteresis loss.
core stacking
core stacking
The "stepping lamination" method and 45° fully oblique joint structure are adopted to effectively reduce the loss when the magnetic flux turns in the magnetic circuit and the air gap at the joints.
coiling
coiling
High-voltage coils are usually tightly wound using high-speed winding machines to ensure the concentricity and tightness of the coils.
pre-Drying
pre-Drying
Insulating parts such as coils are pre-dried before casting to remove moisture.
Vacuum casting
Vacuum casting
The epoxy resin mixture is poured into the mold containing the coil under vacuum.
Assembling
Assembling
Assemble the insulated coils, cores and other components.
Final Test
Final Test
Tests: Voltage ratio, winding resistance, no-load loss, load loss, power frequency withstand voltage, induced withstand voltage, partial discharge level.
packing
packing
Choose the appropriate packaging material and method based on the size of the transformer and the transportation distance.
Lightning Shock Test Bench
Quality control verification card are used for the complete manufacturing process thus assuring traceability of all operations.
- Verify the reliability of the insulation design
- Cooperation of inspection and protection measures
- Quality control and type certification
Transformer Intelligent test station
Quality control verification card are used for the complete manufacturing process thus essuring traceability of all operations.
- 100% incoming material control as well as inspections at major supplier's premises
- Extensive quality training for all employees
- Certificate:ISO9001, ISO14001, OHSAS18001
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