Affordable 4 kVA dry type isolation transformer adopts high quality material and advanced technology, is designed to step up/down the AC single phase voltage between 220 volt and 110 volt that with frequency 50Hz/60Hz.
4 kVA Isolation Transformer Specifications
| Model |
ATO-DG4kVA |
| Phase |
Single phase |
| Capacity |
4kVA |
| Primary Voltage |
220V AC (optional: 110V/ 120V/ 208V/ 230V/ 240V) |
| Secondary Voltage |
110V AC (optional: 120V/ 208V/ 220V/ 230V/ 240V) |
| Frequency |
50Hz / 60Hz |
| Winding Material |
Aluminum/Copper wire (Optional) |
| Work Efficiency |
≥95% |
| Insulation Resistance |
≥50 MΩ |
| Electrical Strength |
2000V AC/1 min |
| Noise |
≤35dB (1 meter) |
| Insulation Grade |
Grade B (130℃), Grade F (155℃), Grade H (180℃) |
| Cooling Method |
Natural or air cooling |
| Overload Capacity |
Allow more than 1.2 times rated load to work for up to 1 hour |
| Induced Overvoltage Withstand Test |
125Hz/800V/min |
| Transformation Ratio |
<3% |
| Air Carrying Current |
<6% |
| Impedance Voltage |
about 6% |
| Total Losses |
10% |
| Certification |
CE, ISO |
| Temperature |
-15℃~+45℃ |
| Humidity |
≤90%RH, without condensation |
| Altitude |
<2000m, non corrosive gas and conductive dust |
| Enclosure Protection Grade |
IP 20 |
| Warranty |
12 months |
| Weight of Aluminium Wire Transformer |
Open type: 35kg
Protected type: 45kg |
| Weight of Copper Wire Transformer |
Open type: 30kg
Protected type: 40kg |
Note:
Transformer can only convert voltage and CANNOT convert frequency.
Transformer CANNOT convert single phase voltage to 3 phase voltage.
Support voltage customization, various specifications customization.
Single Phase Isolation Transformer Schematic Diagram
4 kVA Isolation Transformer Dimension
| Aluminium Wire Transformer Size |
Copper Wire Transformer Size |
| Open type: a*b*c=210*230*230mm |
Open type: a*b*c=192*210*220mm |
| Protected type: A*B*C=330*350*350mm |
Protected type: A*B*C=300*330*320mm |
| Installation Dimenion: D*E=150*170mm (The Aperture: 18*8mm) |
Installation Dimenion: D*E=140*160mm (The Aperture: 17*8mm) |
Tips: Faults of Single Phase Step UP/Down Isolation Transformer
Internal faults
Internal faults of a single phase step up & step down isolation transformer include interphase short circuit, turn-to-turn short circuit of the winding and grounded short circuit of earth neutral system and winding grounding system. These faults are quite serious, because the high temperature arc generated by short-circuit current will not only burn the iron core of winding insulation box, but also makes the insulating material and isolation transformer oil to decompose, thus producing a large amount of gas, which might lead to local deformation and break of transformer oil tank, or even explosion hazard. Therefore, when an internal fault occurs in the transformer, the transformer shall be removed quickly.
External faults
External faults of a single phase isolation transformer mainly include the interphase short circuit and grounded short circuit occurring on the bushing shell and outgoing line of the transformer. In case of such a fault, the transformer should also be rapidly removed, so as to minimize the impact of short circuit current on the transformer.
