Key Advantages
1. Dry Type Design for Safety & Low Maintenance
Natural Air Cooling (AN): Eliminates the need for oil, reducing fire risk and maintenance costs.
Flame-Retardant Materials: UL94 V-0 compliant, providing excellent fire resistance.
2. Electrical Isolation & Noise Suppression
Galvanic Isolation: Establishes a new neutral grounding system to eliminate common-mode interference.
Optional Shielding Layer: When grounded properly, effectively suppresses high-frequency EMI for sensitive equipment.
3. Flexible Voltage Conversion
Supports Δ-Δ, Δ-Y, or Y-Δ connections for step-down or step-up applications.
Custom input/output voltages and tap settings (±5 %) to match regional power requirements.
4. High Efficiency & Reliable Performance
Efficiency ≥95 % with waveform distortion <0.1 %.
Load regulation within ±1 % from no-load to full-load.
Vacuum-impregnated F/H-class insulation for long service life and exceptional thermal stability.
Dimensions with housing
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Modello
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SG -kVA
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Fase
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3 Phase
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Capacità
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0.5~400 kVA (Can be customized)
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Tensione primaria
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110V/ 120V/ 208V/ 220V/ 230V/ 240V/ 380V/ 415V/ 480V (Can be customized)
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Tensione secondaria
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110V/ 120V/ 208V/ 220V/ 230V/ 240V/ 380V/ 415V/ 480V (Can be customized)
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Materiale di avvolgimento
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Aluminium/ Copper (optional)
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Voltage Convert
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Single phase to single phase, three phase to three phase, three phase to single phase
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Frequenza
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50Hz / 60 Hz
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Work Efficiency
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≥95%
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Insulation Resistance
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≥5 MΩ
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Electrical Strength
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3000V AC/1 min
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Noise
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<35 – 65dB (1 meter)
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Insulation Grade
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H level
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Wiring Mode
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Dyn11
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Cooling Mode
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Dry type air cooling
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Capacità di sovraccarico
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Allow more than 1.2 times rated load to work for up to 4 hours
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Temperature
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-15℃~+40℃
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Humidity
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≤90%RH, without condensation
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Product specifications
| MODEL | Tensione di ingresso | Tensione di uscita | Measurement(mm) Length*Width*Height |
| SG-500VA | Default 660V 440V 380V 220V 208V 200V (customizable voltage) | Default 660V 440V 380V 220V 208V 200V (customizable voltage) | 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 |
Applicazioni
- Data centers & IT infrastructure — clean, isolated power for servers and network gear.
- Medical & laboratory equipment — imaging, diagnostics, test benches.
- Industrial automation & CNC — motors, robots, control panels needing low-noise, isolated supply.
- Renewables & power distribution — step-down and isolation for solar inverters, microgrids and local distribution.
- Renewable Energy & Power Distribution – Step-down transformation for solar and wind integration.
Why Choose ZHENGXI
As a global transformer manufacturer with decades of engineering expertise, ZHENGXI provides:
ISO-Certified Production & CE Compliance for international markets.
Custom Engineering Services to meet unique voltage, frequency, and enclosure needs.
High-Grade Materials & Precision Winding using orthocyclic techniques and vacuum impregnation for unmatched durability.
Responsive Technical Support and rapid lead times to keep projects on schedule.
Domande frequenti
1. What is the difference between a dry type transformer and an oil-filled transformer?
A dry type transformer uses air as the cooling medium, eliminating flammable oil. This design reduces fire risk, requires less maintenance, and is ideal for indoor or high-safety applications.
2. Can the SG series be customized for specific input/output voltages?
Yes. ZHENGXI offers full customization of input/output voltage levels, tap settings (±5 %), and connection groups (Δ-Δ, Δ-Y, Y-Δ) to meet regional or project-specific requirements.
3. Is the SG transformer suitable for sensitive electronic equipment?
Absolutely. With galvanic isolation, optional shielding layers, and <0.1 % waveform distortion, the SG series provides clean, stable power for servers, medical imaging systems, and precision laboratory instruments.
Need a quote or a project-specific drawing for an SG dry type transformer, an isolation transformer, or a 100kva transformer? Send your system voltage, connection preference and load profile — our engineers will size and quote quickly.
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