BUF UL-CSA
SINGLE-PHASE TRANSFORMERS,
UI, COST-OPTIMIZED,
COSTUMER SPECIFIC VERSION

250 VA – 25 kVA

General construction features:

  • transformers with customized voltages up to 1000 V
  • cost-optimized execution
  • open version for stationary installation
  • hand-back and finger-touch-proof terminals, according to DGUV regulation 3 (IPxxB)
  • up to 50A connections to transformer terminals, up to 340 A terminal blocks, above that copper bars or cable lugs
  • IP xx B, insulation class B up to 5000 VA, max. ambient temperature 40°C (ta 40°C/B)
  • insulation class F from 6000 VA, max. ambient temperature 40°C (ta 40°C/F)
  • standard: vertical design, others on request
  • for loss-optimized versions see BUVA series
  • available in different standards
  • UL approved (UL 5085 and UL 1446)

Standards:

EN 61558-2-2
Control transformers
EN 61558-2-4
Isolating transformers
EN 61558-2-6
Safety transformers
EN 61558-2-13
Autotransformers
UL 1446
Electrical insulation system

(OBJY2) File E475312

Certificate and standards single-phase transformers

Type Art. No. Power
[VA]
Size Copper weight
[kg]
Total weight
[kg]
Dimensions [mm]
B T H a b Screw
BUF 250 UL-CSA 0530-20-xxxxxxx 250 UI 75/26 1,20 3,00 100 66 132 63 49 M5
BUF 500 UL-CSA 0530-20-xxxxxxx 500 UI 90/31 2,10 5,00 120 75 157 76 56 M6
BUF 750 UL-CSA 0530-20-xxxxxxx 750 UI 90/51 2,50 7,00 120 95 157 76 76 M6
BUF 1000 UL-CSA 0530-20-xxxxxxx 1.000 UI 120/41 4,70 11,0 158 95 213 100 89 M6
BUF 1500 UL-CSA 0530-20-xxxxxxx 1.500 UI 120/51 5,10 14,0 158 105 213 100 79 M6
BUF 2000 UL-CSA 0530-20-xxxxxxx 2.000 UI 120/71 6,00 17,0 158 135 213 100 99 M6
BUF 3000 UL-CSA 0530-20-xxxxxxx 3.000 UI 150/52 12,0 27,0 195 122 257 124 94 M8
BUF 4000 UL-CSA 0530-20-xxxxxxx 4.000 UI 150/77 13,0 31,0 195 147 264 124 119 M8
BUF 5000 UL-CSA 0530-20-xxxxxxx 5.000 UI 150/92 16,0 37,0 195 165 264 124 134 M8
BUF 6000 UL-CSA 0530-20-xxxxxxx 6.000 UI 180/63 17,0 39,0 236 153 372 144 125 M8
BUF 8000 UL-CSA 0530-20-xxxxxxx 8.000 UI 180/78 24,0 48,0 236 168 372 144 140 M8
BUF 10000 UL-CSA 0530-20-xxxxxxx 10.000 UI 210/63 36,0 63,0 280 163 430 176 133 M10
BUF 13000 UL-CSA 0530-20-xxxxxxx 13.000 UI 210/88 37,0 75,0 280 188 430 176 158 M10
BUF 16000 UL-CSA 0530-20-xxxxxxx 16.000 UI 210/103 40,0 86,0 280 203 430 176 173 M10
BUF 20000 UL-CSA 0530-20-xxxxxxx 20.000 UI 240/110 51,0 121 320 220 490 196 184 M12
BUF 25000 UL-CSA 0530-20-xxxxxxx 25.000 UI 240/140 62,0 139 320 250 490 196 214 M12