With continuous development of material and manufacturing technologies, this kind of transformers are widely applicable in American markets. They adopt the full-open type for better heat dissipations, with completed vacuum pressure impregnation in either 180 degree or 220 degree insulation system to enhance the strength and meet the life expectancy.
In compliance with:IEC60076-11,IEC61378-1,UL1446
Approval marks:
Rated primary voltage: 3kV-13.8 kV
Primary voltage tolerance: +/-10%
Rated secondary Voltage: 120V-480V
Rated frequency: 50Hz/60Hz
Efficiency: >95%
Cooling method: Natural air-cooled
Elevation above sea level: ≤1000m a.s.l.
Maximum humidity: 95%
Protection class: IP00 indoor mounting
Insulation class: H(C class optional)
Design method: Three phase, dry type iron core, open type
Tap range: +/-5% or 2x2.5%
Winding material: Copper/ Aluminum
Terminal: Copper busbars
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