AT3 250-20/21-4

Autotransformer AT3

Version AT3 250-20/21-4
Rated input voltage 3 x 200/208 Vac Rated output voltage 3 x 400 Vac Rated Power 250,000 VA
Display options
Version Rated input voltage Rated output voltage Rated Power
AT3 2-20/21-4 3 x 200/208 Vac 3 x 400 Vac 2,000 VA
AT3 2-22/23-4 3 x 220/230 Vac 3 x 400 Vac 2,000 VA
AT3 2-24/35-4 3 x 240/346 Vac 3 x 400 Vac 2,000 VA
AT3 2-38/42-4 3 x 380/415 Vac 3 x 400 Vac 2,000 VA
AT3 2-44/46-4 3 x 440/460 Vac 3 x 400 Vac 2,000 VA
AT3 2-48/50-4 3 x 480/500 Vac 3 x 400 Vac 2,000 VA
AT3 2-58/60-4 3 x 575/600 Vac 3 x 400 Vac 2,000 VA
AT3 2-69-4 3 x 600/690 Vac 3 x 400 Vac 2,000 VA
AT3 2-69-23 3 x 690 Vac 3 x 400 Vac 2,000 VA
AT3 3,5-20/21-4 3 x 200/208 Vac 3 x 400 Vac 3,500 VA
AT3 3,5-22/23-4 3 x 220/230 Vac 3 x 400 Vac 3,500 VA
AT3 3,5-24/35-4 3 x 240/346 Vac 3 x 400 Vac 3,500 VA
AT3 3,5-38/42-4 3 x 380/415 Vac 3 x 400 Vac 3,500 VA
AT3 3,5-44/46-4 3 x 440/460 Vac 3 x 400 Vac 3,500 VA
AT3 3,5-48/50-4 3 x 480/500 Vac 3 x 400 Vac 3,500 VA
AT3 3,5-58/60-4 3 x 575/600 Vac 3 x 400 Vac 3,500 VA
AT3 3,5-69-4 3 x 600/690 Vac 3 x 400 Vac 3,500 VA
AT3 10-20/21-4 3 x 200/208 Vac 3 x 400 Vac 10,000 VA
AT3 10-22/23-4 3 x 220/230 Vac 3 x 400 Vac 10,000 VA
AT3 10-24/35-4 3 x 240/346 Vac 3 x 400 Vac 10,000 VA
AT3 10-38/42-4 3 x 380/415 Vac 3 x 400 Vac 10,000 VA
AT3 10-44/46-4 3 x 440/460 Vac 3 x 400 Vac 10,000 VA
AT3 10-48/50-4 3 x 480/500 Vac 3 x 400 Vac 10,000 VA
AT3 10-58/60-4 3 x 575/600 Vac 3 x 400 Vac 10,000 VA
AT3 10-69-4 3 x 600/690 Vac 3 x 400 Vac 10,000 VA
AT3 15-20/21-4 3 x 200/208 Vac 3 x 400 Vac 15,000 VA
AT3 15-22/23-4 3 x 220/230 Vac 3 x 400 Vac 15,000 VA
AT3 15-24/35-4 3 x 240/346 Vac 3 x 400 Vac 15,000 VA
AT3 15-38/42-4 3 x 380/415 Vac 3 x 400 Vac 15,000 VA
AT3 15-44/46-4 3 x 440/460 Vac 3 x 400 Vac 15,000 VA
AT3 15-48/50-4 3 x 480/500 Vac 3 x 400 Vac 15,000 VA
AT3 15-58/60-4 3 x 575/600 Vac 3 x 400 Vac 15,000 VA
AT3 15-69-4 3 x 600/690 Vac 3 x 400 Vac 15,000 VA
AT3 25-20/21-4 3 x 200/208 Vac 3 x 400 Vac 25,000 VA
AT3 25-22/23-4 3 x 220/230 Vac 3 x 400 Vac 25,000 VA
AT3 25-24/35-4 3 x 240/346 Vac 3 x 400 Vac 25,000 VA
AT3 25-38/42-4 3 x 380/415 Vac 3 x 400 Vac 25,000 VA
AT3 25-44/46-4 3 x 440/460 Vac 3 x 400 Vac 25,000 VA
AT3 25-48/50-4 3 x 480/500 Vac 3 x 400 Vac 25,000 VA
AT3 25-58/60-4 3 x 575/600 Vac 3 x 400 Vac 25,000 VA
AT3 25-69-4 3 x 600/690 Vac 3 x 400 Vac 25,000 VA
AT3 45-20/21-4 3 x 200/208 Vac 3 x 400 Vac 45,000 VA
AT3 45-22/23-4 3 x 220/230 Vac 3 x 400 Vac 45,000 VA
AT3 45-24/35-4 3 x 240/346 Vac 3 x 400 Vac 45,000 VA
AT3 45-38/42-4 3 x 380/415 Vac 3 x 400 Vac 45,000 VA
AT3 45-44/46-4 3 x 440/460 Vac 3 x 400 Vac 45,000 VA
AT3 45-48/50-4 3 x 480/500 Vac 3 x 400 Vac 45,000 VA
AT3 45-58/60-4 3 x 575/600 Vac 3 x 400 Vac 45,000 VA
AT3 45-69-4 3 x 600/690 Vac 3 x 400 Vac 45,000 VA
AT3 70-20/21-4 3 x 200/208 Vac 3 x 400 Vac 70,000 VA
AT3 70-22/23-4 3 x 220/230 Vac 3 x 400 Vac 70,000 VA
AT3 70-24/35-4 3 x 240/346 Vac 3 x 400 Vac 70,000 VA
AT3 70-38/42-4 3 x 380/415 Vac 3 x 400 Vac 70,000 VA
AT3 70-44/46-4 3 x 440/460 Vac 3 x 400 Vac 70,000 VA
AT3 70-48/50-4 3 x 480/500 Vac 3 x 400 Vac 70,000 VA
AT3 70-58/60-4 3 x 575/600 Vac 3 x 400 Vac 70,000 VA
AT3 70-69-4 3 x 690 Vac 3 x 400 Vac 70,000 VA
AT3 110-20/21-4 3 x 200/208 Vac 3 x 400 Vac 110,000 VA
AT3 110-22/23-4 3 x 220/230 Vac 3 x 400 Vac 110,000 VA
AT3 110-24/35-4 3 x 240/346 Vac 3 x 400 Vac 110,000 VA
AT3 110-38/42-4 3 x 380/415 Vac 3 x 400 Vac 110,000 VA
AT3 110-44/46-4 3 x 440/460 Vac 3 x 400 Vac 110,000 VA
AT3 110-48/50-4 3 x 480/500 Vac 3 x 400 Vac 110,000 VA
AT3 110-58/60-4 3 x 575/600 Vac 3 x 400 Vac 110,000 VA
AT3 110-69-4 3 x 690 Vac 3 x 400 Vac 110,000 VA
AT3 160-20/21-4 3 x 200/208 Vac 3 x 400 Vac 160,000 VA
AT3 160-22/23-4 3 x 220/230 Vac 3 x 400 Vac 160,000 VA
AT3 160-24/35-4 3 x 240/346 Vac 3 x 400 Vac 160,000 VA
AT3 160-38/42-4 3 x 380/415 Vac 3 x 400 Vac 160,000 VA
AT3 160-44/46-4 3 x 440/460 Vac 3 x 400 Vac 160,000 VA
AT3 160-48/50-4 3 x 480/500 Vac 3 x 400 Vac 160,000 VA
AT3 160-58/60-4 3 x 575/600 Vac 3 x 400 Vac 160,000 VA
AT3 160-69-4 3 x 690 Vac 3 x 400 Vac 160,000 VA
AT3 250-20/21-4 3 x 200/208 Vac 3 x 400 Vac 250,000 VA
AT3 250-22/23-4 3 x 220/230 Vac 3 x 400 Vac 250,000 VA
AT3 250-24/35-4 3 x 240/346 Vac 3 x 400 Vac 250,000 VA
AT3 250-38/42-4 3 x 380/415 Vac 3 x 400 Vac 250,000 VA
AT3 250-44/46-4 3 x 440/460 Vac 3 x 400 Vac 250,000 VA
AT3 250-48/50-4 3 x 480/500 Vac 3 x 400 Vac 250,000 VA
AT3 250-58/60-4 3 x 575/600 Vac 3 x 400 Vac 250,000 VA
AT3 250-69-4 3 x 690 Vac 3 x 400 Vac 250,000 VA
Image of %s BLOCK Item: AT3 250-20/21-4

Technical data for AT3 250-20/21-4

Input
Rated input voltage 3 x 200/208 Vac
Rated frequency 50 - 60 Hz
Output
Rated output voltage 3 x 400 Vac
Rated Power 250,000 VA
Vector group YNaO
Efficiency 98.0 %
Approvals
Approvals cURus
Environment
Ambient temperature max. 40 °C
Safety and protection
Type Open type
Insulation class F
Protection index IP 00
Safety class (prepared) I
Short circuit strength non-short-circuit proof
Test voltage 4,000 Vac, 50 Hz
Terminal and mounting
Fixing method Mounting brackets
Fixing screws M16
Terminals Flat copper
Terminals Input Bolt, M12
Terminals Output Bolt, M12
Terminals PE Bolt, M12
Measures and weights
Width 750 mm
Height 720 mm
Depth 600 mm
Core type 3 UI 375/150
Weight 545.0 kg

Info on AT3 series

General Data
  • Rated input voltage 3 x 200/208 - 3 x 690 Vac
  • Rated output voltage 3 x 400 Vac
  • Insulation class F
  • Maximum ambient temperature 40 °C
  • Efficiency up to 98 %
  • Degree of protection IP 00
  • Optionally adapted package for higher degrees of protection
  • Rated power 2,000 - 250,000 VA
Benefits
  • Enlarged mounting bracket for easy installation from above
  • Integrated crane eyes
  • Multi-functional mounting brackets with 12 slots
  • Fixed, contact protected screw connection terminals complying with UVV BGV A3
  • Very good corrosion protection and low noise thanks to BLOCK IMPEX vacuum impregnation
  • Patented assembly technology to lower heat losses
  • Very high efficiency
  • Reverse mode possible

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