Description：

Outline 

      SG series three-phase dry type isolation transformer factory in the light of the international similar products, based on the situation of China's development and production of a new generation of energy-saving power transformers from 300VA to 1600KVA, which meets IEC439, GB5226 and other international, national standards, winding entire column with bodiless way around the system; transformer vacuum dipping to transformer insulation class F or H grade to grade, to achieve advanced levels of performance. SG series three-phase dry type isolation transformers are widely used in AC 50Hz to 60Hz, below 660V voltage circuits, widely used in the import key equipment, precision machine tools, machinery and electronic equipment, medical equipment, rectifiers, lighting and so on. Of input and output voltage level, joint group and tap the number and location (typically ± 5%), winding capacity allocation, single-phase windings with the secondary, the use of rectifier circuit, is required with shell, etc., can be based on user demands meticulous design and manufacturing. 

+ Features 
       Isolation transformer in a new center line - you can lift the power ground common mode interference and other troubled middle, isolation transformer will be three-to four-wire conversion △ Yo wiring system, plus shielded from the transformer to further Mianchu the internal coupling of high-frequency pulse interference and noise, although shielded isolation transformer to the interference of various NG (pulse and high frequency noise) can effectively prevent, but the transformer must be correctly and properly grounded, very strict, otherwise the resistance will be no effect of common mode interference. The company can design and produce high-quality customer isolation transformer. 
+ Feature advantages: 
Ø a high degree of isolation 
Ø N-G in good 
Ø a high degree of common mode interference rejection 
Ø will be converted to Y or △ △ Y to 
Ø easy to convert voltage tap 
Ø special performance by the user to design 

+ Technical indicators 
1 Input Voltage: 380V or 380V single-phase or single phase 220V 
2 Operating frequency: 50Hz-60Hz 
3 Efficiency: ≥ 95% 
4 Temperature rise: <60 
5 Waveform distortion: <0.1% 
6 High Voltage Test: 2500V, 1 minutes at zero breakdown 
7 Insulation resistance: winding-to-ground insulation resistance ≥ 500M Euro 
Primary on the secondary insulation resistance ≥ 500M Euro 
+ Use 
1 to altitude: ≤ 5000m 
2 Ambient temperature: -15 ℃ ~ +45 ℃ 
3 Relative humidity: ≤ 90% 
4 installation sites should not seriously affect the strength of transformer insulating gas, steam, chemical deposition, dirt, dust, and no other explosive conductive flammable corrosive substances. 
5 who do not meet the above conditions of use shall be determined in consultation with us. 
+ Isolation transformer installed in the application of power supply 
First, access the power input isolation transformer (Delta / Star) 
1, if the third harmonic and the interference signal power is quite serious, with △ / Yo isolation transformer, you can remove the third harmonic and reduce the interference signal. 
2, can be used △ / Yo isolation transformer to generate new neutral line, so that equipment has nothing to do with the power neutral line, avoid the bad result in the neutral network equipment does not run properly. 
3, non-linear load current waveform distortion caused (such as third harmonic) can be isolated without contamination grid. 
Second, access to the power output isolation transformer (star / triangle) 
1, to prevent the non-linear load current distortion, affecting the power supply back to normal work and anti-grid, played the role of clean power. 
2, the distortion effects of nonlinear load current sampling accuracy can Yo / △ isolation transformer input sampling, be able to respond to the actual situation of the control signal to control the normal power supply. 
3, if the load imbalance, with Yo / △ not affect the normal operation of power supply.