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SG Three-phase dry type transformerClass: TRANSFORMER
SG-50K 小
General
DG and  SG series  single - phase and three - phase  dry type transformer adopts high quality material and advanced technology ,  it  has  advantages  of  damp - proof  and  convenient  maintenance,  it  can  be  applied  to  such  power transmission  and  distribution  places  like  underground  railway ,  high  building,  airport, station, wharf, enterprise, tunnel, etc. It  is  mainly  used in  power  supply  occasions  of  AC 50~60Hz  and voltage less than 500V. All the input and output voltage ,  connection  group  and  capacity  of  tapped  winding  can  be designed  and  produced  according to users' requirements.
Working environment (SG Three-phase dry type transformer)
1.Ambient temperature: -15℃~+40℃
2.Altitude: <1000m
3.Relative humidity: <90%
4.Environment exists without gas, steam, chemical deposition, dust or dirt that will affect transformer's insulation seriously, also explosive or corrosive medium is not 
allowed.
5.If any special working conditions that are not in line with the above stipulations, 
user shall negotiate with us.
technical characters (SG Three-phase dry type transformer)
1.Input voltage: rated voltage ±10%
2.Output voltage: rated voltage +5% (no    load)
3.Efficiency: ≥95%
4.Waveform distortion: no additional    waveform distortion
5.Function: indication of input voltage,    output voltage and current.
6.Protection: over-current protection 
7.Can operate itself without anybody    attending for a long term
8.Insulation resistance: ≥50MΩ
9.Electric strength: no breakdown or    flashover phenomenon under power    frequency sine voltage of 2000V for    1min
10.Overload capability: for 1min under     two times of rated current 
Overall size (SG Three-phase dry type transformer)
Model (KVA) Overall size L×W×H(cm) Installation size (cm) Enclosure size L×W×H(cm) weight(kg)
SG-80 70×32×67 19.5×45 100×50×104.5 450
SG-100 75×35×68 21×45 100×50×104.5 490
SG-120 75×35×68 21.5×45 100×50×104.5 520
SG-150 85×37×68 23×45 120×65×114.5 650
SG-200 95×45×68 29×45 120×65×114.5 850
SG-250 94×45×83 29×45 120×70×124.5 1080
SG-300 105×45×95 29×45 120×70×124.5 1350
SG自耦-0.5 17×7×15 11×6 32×15×22 6.5
SG自耦-1 25×9×20 14×8 40×20×25 8.5
SG自耦-1.5 25×10×20 14×9 40×20×25 11.5
SG自耦-2 25×10.5×20 14×9.5 40×20×25 13
SG自耦-3 25×11×20 14×10 40×20×25 20
SG自耦-5 30×12×25 20×11.5 45×25×30 26
SG自耦-6 30×13×25 20×12 45×25×30 39
SG自耦-7 30×13.5×25 20×12.5 45×25×30 41
SG自耦-8 30×14×25 20×13 45×25×30 45
SG自耦-10 36×14.5×30 20×14 50×25×35 49
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