TT3 25-4-4

Isolating transformer TT3

Version TT3 25-4-4
Rated input voltage 3 x 400 Vac Rated output voltage 3 x 400 Vac Rated Power 25,000 VA
Version Rated input voltage Rated output voltage Rated Power
TT3 1-4-4 3 x 400 Vac 3 x 400 Vac 1,000 VA
TT3 2,5-4-4 3 x 400 Vac 3 x 400 Vac 2,500 VA
TT3 2,5-69-4 3 x 690 Vac 3 x 400 Vac 2,500 VA
TT3 5-4-4 3 x 400 Vac 3 x 400 Vac 5,000 VA
TT3 6,3-4-4 3 x 400 Vac 3 x 400 Vac 6,300 VA
TT3 8-4-4 3 x 400 Vac 3 x 400 Vac 8,000 VA
TT3 10-4-4 3 x 400 Vac 3 x 400 Vac 10,000 VA
TT3 10-69-4 3 x 690 Vac 3 x 400 Vac 10,000 VA
TT3 12,5-4-4 3 x 400 Vac 3 x 400 Vac 12,500 VA
TT3 16-4-4 3 x 400 Vac 3 x 400 Vac 16,000 VA
TT3 20-4-4 3 x 400 Vac 3 x 400 Vac 20,000 VA
TT3 20-69-4 3 x 690 Vac 3 x 400 Vac 20,000 VA
TT3 25-4-4 3 x 400 Vac 3 x 400 Vac 25,000 VA
TT3 25-69-4 3 x 690 Vac 3 x 400 Vac 25,000 VA
TT3 30-4-4 3 x 400 Vac 3 x 400 Vac 30,000 VA
Image of %s BLOCK Item: TT3 25-4-4

Technical data for TT3 25-4-4

Input
Rated input voltage 3 x 400 Vac
Rated frequency 50 - 60 Hz
Output
Rated output voltage 3 x 400 Vac
Tappings Output (±) ±5 %
Rated Power 25,000 VA
Rated current 3 x 38.1 Aac (3 x 380 Vac) 3 x 36.1 Aac (3 x 400 Vac) 3 x 34.4 Aac (3 x 420 Vac)
Power loss 604.0 W
Short circuit voltage 1.2 %
Vector group Dyn 5
Efficiency 97.5 %
Approvals
Approvals cURus
Environment
Ambient temperature max. 50 °C
Safety and protection
Insulation class VDE=F, UL=class 155
Protection index IP 00
Safety class (prepared) I
Type Open type
Short circuit strength non-short-circuit proof
Terminal and mounting
Fixing method Fixing rail
Fixing screws M12
Terminals Screw-type terminal
Cable glanding type -
Cable glanding Ø 23 - 32 mm
Measures and weights
Core type 3UI 240/140
Depth 297 mm
Height 510 mm
Weight 205.00 kg
Width 550 mm

Info on TT3 series

General Data
  • Rated input voltage 3 x 400 Vac, 3 x 690 Vac
  • Rated output voltage 3 x 400 Vac
  • Rated power 1,000 - 30,000 VA
  • Insulation class F
  • Maximum ambient temperature 50 °C
  • Efficiency up to 97.5 %
  • Degree of protection IP 00 or IP 23
  • Optionally adapted package for higher degrees of protection
Benefits
  • Very good corrosion protection and low noise thanks to vacuum impregnation
  • Enlarged fixing rail for easy installation from above
  • Integrated crane eyes
  • Patented assembly technology to lower heat losses
  • Multifunctional fixing rails with 12 oval slots
  • Fixed, contact protected screw connection terminals complying with UVV BGV A3
  • Safe galvanic isolation
  • Secondary side ±5 % tappings for voltage adjustment

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