SK Electric is the exclusive manufacturer of a globally patented, high-efficiency R-core transformer that ranges from 5VA to 2kVA and can be used in medical and audio control devices or any other electrical driven equipment.
Unlike most transformers, SK Electric’s R-core is formed with a closed ring bound in a variable-width electrical lamination. The result is a transformer with reduced heat loss and maximum possible efficiency.
To accurately produce the variable-width strip for the R-core transformer, SK Electric developed a unique automated cutting technique and set of equipment of which it is the sole patent holder.
R-Core Technical Specifications:
Voltage: up to 500V
Rated Power: 5VA to 2kVA
Rated frequency: 50/60Hz
Insulation Class: Class B , Class H
Protection Class: IP00
Cooling method: Natural air
Temperature rise: ≤90 ºC (Class B) , ≤140 ºC (Class H)
HV test: 1,500Vrms/50Hz/60Hz
Elevation above sea level: 3,000m max
Standard: UL/IEC/EN 60601-1, UL/IEC/EN 61558-1,UL 1411
| Model | Power (VA) | Voltage (V) | Height (mm) | Width (mm) | Depth (mm) | Eff | Weight (kg) |
|---|---|---|---|---|---|---|---|
| R-5 | 5 | 0...500 | 64 | 45 | 41 | 97 | 0.29 |
| R-6 | 6 | 0...500 | 64 | 56 | 41 | 97 | 0.3 |
| R-7 | 7 | 0...500 | 72 | 65 | 43 | 97 | 0.32 |
| R-10 | 10 | 0...500 | 79 | 70 | 45 | 97 | 0.34 |
| R-15 | 15 | 0...500 | 80 | 75 | 50 | 97 | 0.45 |
| R-20 | 20 | 0...500 | 84 | 75 | 51 | 97 | 0.52 |
| R-25 | 25 | 0...500 | 86 | 78 | 50 | 97 | 0.6 |
| R-30 | 30 | 0...500 | 98 | 82 | 52 | 97 | 0.7 |
| R-35 | 35 | 0...500 | 101 | 88 | 57 | 97 | 0.9 |
| R-40 | 40 | 0...500 | 100 | 90 | 55 | 97 | 0.95 |
| R-50 | 50 | 0...500 | 102 | 96 | 60 | 97 | 1 |
| R-65 | 65 | 0...500 | 106 | 98 | 62 | 97 | 1.2 |
| R-80 | 80 | 0...500 | 125 | 100 | 65 | 97 | 1.4 |
| R-100 | 100 | 0...500 | 126 | 110 | 70 | 97 | 1.96 |
| R-160 | 160 | 0...500 | 140 | 128 | 75 | 97 | 2.6 |
| R-260 | 260 | 0...500 | 160 | 130 | 80 | 97 | 3.1 |
| R-320 | 320 | 0...500 | 164 | 142 | 92 | 97 | 3.8 |
| R-600 | 600 | 0...500 | 190 | 155 | 100 | 97 | 6 |
| R-1000 | 1000 | 0...500 | 227 | 190 | 115 | 97 | 10.2 |
| R-1500 | 1500 | 0...500 | 245 | 190 | 115 | 97 | 15.5 |
| R-2000 | 2000 | 0...500 | 250 | 220 | 130 | 97 | 20.2 |
