SG 3 Phase Dry-Type Isolation Transformer
QSG/SG three-phase dry-type isolation transformer not only has the function of voltage change, but also can effectively isolate the third harmonic of the power grid, prolong the service life of the equipment, suitable for all kinds of imported equipments and a variety of voltage conversion occasions (such as 380V to 220V, 380V to other voltages, 220V to other voltages), specifications ranging from 1KVA to 1000KVA.
This series of transformers conforms to international standards such as IEC439 and GB5226, and adopts advanced winding technology and vacuum impregnation technology, the insulation grade reaches F or H class, which ensures excellent performance. Transformer input and output voltages, connection methods, capacity allocation, secondary winding configuration, etc. can be customized according to user requirements.
Transformers consist of an iron core and multiple windings, and utilize the principle of electromagnetic mutual induction to realize the conversion of voltage, current and impedance. Widely used in AC circuits from 50Hz to 60Hz, below 2000V, suitable for a variety of three-phase power supply occasions.
Type designation
| MODEL: □SG□ | |
| □ | None: lsolation, Q: Autocoupling |
| S | S: three-phase |
| G | Dry-type transformer |
| □ | Power KVA |
Normal use condition
● Normal use condition
● The altitude does not exceed 2500M;
● Ambient medium temperature: no lower than -25 ℃, no higher than + 40 ℃;
● The current and voltage waveform is similar to a sine wave;
● Places not subject to rain and snow erosion, and places without significant shaking and shock vibration;
● In the medium without explosion danger, and in the medium, there is no gas and conductive dust sufficient to corrode metals and destroy insulation
● Input and output voltage can be customized according to customer needs
Main technical parameter
Dimensions with housing
| Product model | Input voltage | Output voltage | size（mm）L x W x H |
| QSG-5KVA | Default 380V 660V 440V 380V 220V(Customisable voltage) | Default 220V 1140V 690V 660V 440V 415V 400V 380V 220V 110V(Customisable voltage) | 390*300*330 |
| QSG-8KVA | 450*300*390 | ||
| QSG-10KVA | 450*300*390 | ||
| QSG-15KVA | 505*350*420 | ||
| QSG-20KVA | 505*350*420 | ||
| QSG-25KVA | 350*500*520 | ||
| QSG-30KVA | 540*380*420 | ||
| QSG-40KVA | 570*420*460 | ||
| QSG-50KVA | 400*550*570 | ||
| QSG-60KVA | 450*600*620 | ||
| QSG-70KVA | 450*600*620 | ||
| QSG-80KVA | 450*600*620 | ||
| SG-3KVA | Default 380V 660V 440V 380V 220V(Customisable voltage) | 340*300*330 | |
| SG-5KVA | 420*330*360 | ||
| SG-10KVA | 460*350*450 | ||
| SG-15KVA | 490*390*450 | ||
| SG-20KVA | 520*430*470 | ||
| SG-25KVA | 580*460*450 | ||
| SG-30KVA | 580*460*540 | ||
| SG-50KVA | 750*480*690 | ||
| SG-80KVA | 800*500*740 | ||
| SG-100KVA | 900*550*840 |
| Product model | Input voltage | Output voltage | Size (mm) L x W x H |
| QSG-0.5KVA | Default 380V 660V 440V 380V 220V(Customisable voltage) | Default 220V 1140V 690V 660V 440V 415V 400V 380V 220V 110V(Customisable voltage) | 120*88*120 |
| QSG-1KVA | 180*120*155 | ||
| QSG-2KVA | 180*140*155 | ||
| QSG-3KVA | 240*145*205 | ||
| QSG-5KVA | 240*155*205 |
Product specifications
| Brand | ZHENGXI |
| Model | QSG/SG |
| Phase | Three phase |
| Overload Capacity | ±1% |
| Voltage Change Rate | ≤1.5% |
| Distortion Of Output Waveform | No distortion(compared toinput waveform) |
| Insulation Class | Class F,high temperature resistance 150℃ |
| Insulation Resistance | ≥150MQ |
| Work Efficiency | Inductive (isolated)>99% |
| Dielectric Strength | 2000VA/1min |
| Overload Capacity | lt is allowed to exceed 1.2 times ofrated load |
| Design Life | 30 years |
| Noise | ≤35dB (within one meter) |
| Cooling Method | Dryair cooling |
| Temperare Rise | ≤60°C |
| Frequency | 50/60Hz |
| Working Environment | Temperature:-20~+45°C Humidity:≤95% RH does not condense |
| Workplace | Non-corrosive gas and conductive dust |
| Safety Standard | Products comply with international national standards such as VDE0550. IEC439JB5555,GB226 |
| Connection Method | Anycombination of Y/△ |
| Stocking Situation | The 1~300KVA standard models are available in stock, and all specifications are producedin a standardized manner. |
Power Transformer Drawing
① Input Voltage
② Output Voltage
③ Indicator light
④ Chassis switch trip lock
⑤ Heat sink
-
ZXELE Wholesale Single Phase SCR Electronic Adjustable Voltage Regulator DTY-4000WAre you still botheredabout these problems? The speed of the power tool is too fast,the temperature of the electric furnace wire is too highand the light bulb is too bright. ● Select ZhengxiDetails -
STB 1kva-12kva Single Phase Relay Type And Servo Control Wall Mount Automatic Voltage StabilizerMain Features Double Control Modes: Offers Relay Type and Servo Control Voltage Stabilizer for diverse stability demands.LED Display:1kVA to 5kVA models: 82×55mm display.6kVA to 12kVA models: 72×1Details -
600W 12V 24V 48V Pure Sine Wave Power Inverter With USB ChargingKey Features: Pure sine wave outputSupplies AC power of equal quality to mains, suitable for resistive and inductive loads (e.g., refrigerators, microwave ovens, medical equipment), avoiding equipDetails -
AFT Series Audio 220v To 220v Isolation Transformer CustomizedExcellent performance: using advanced technology and materials to ensure extremely low power supply voltage ripple, effectively reduce electromagnetic interference and noises, provide clear and traDetails