Isolation Transformer
LQHIT 200KVA Three-Phase Step-Up Transformer: 380V Input to 480V Output
Precision Voltage Conversion for Industrial Power Systems
Engineered for facilities requiring 480V power, this step-up transformer provides stable 380V to 480V conversion with exceptional accuracy (+0.3% voltage ratio). Dual electrostatic shields reduce electromagnetic interference by up to 90dB while maintaining<55db operational="" noise="" -="" critical="" for="" sensitive="" equipment="" in="" manufacturing="" environments="" where="" 480v="" power="" is="" unavailable.="">
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Capacity | 200 kVA |
| Phase Configuration | Three Phase |
| Input Voltage | 380V AC (400V compatible) |
| Output Voltage | 480V AC |
| Frequency | 60Hz |
| Impedance Voltage | <5% |
| Voltage Ratio Accuracy | +0.3% |
| Noise Level | <55dB(A) at 1m distance |
| Cooling System | NOAN (Oil Natural Air Natural) |
| Dielectric Medium | 25# Transformer Oil (IEC 60296) |
Advanced Engineering Features
Dual Electrostatic Shielding
Copper-foil barriers between HV-LV and LV-coil assemblies provide 360° EMI protection, attenuating common-mode noise >85dB in the 10kHz-2MHz spectrum - reducing partial discharge interference by >98%.
Precision Voltage Conversion
Specialized winding design maintains +0.3% voltage ratio accuracy during 380V to 480V step-up conversion - essential for 480V equipment operation where native power is unavailable.
Ultra-Low Impedance Design
Optimized <5% impedance delivers superior voltage regulation (±1.0%) with 98.6% efficiency at full load - outperforming standard step-up transformers by 22%.
Performance Comparison
| Metric | Standard Step-Up Transformers | LQHIT 200KVA |
|---|---|---|
| Voltage Ratio Accuracy | ±2% | +0.3% |
| Impedance Voltage | 6-8% | <5% |
| Operational Noise | 65-75dB | <55dB |
| Partial Discharge Reduction | 50-60% | >98% |
| Efficiency at Full Load | 94-95% | 98.6% |
Industrial Applications
Manufacturing Retrofits: Power 480V equipment in facilities with only 380V supply
Industrial Machinery: Operate 480V CNC machines, presses, and robotic systems
HVAC Systems: Power large 480V chillers and compressors
Water Treatment Plants: Drive 480V high-torque pump systems
Mining Operations: Reliable power for 480V drilling equipment
Installation & Safety Features
Phase Balancing Technology: Maintains <0.5% voltage imbalance across phases
Thermal Management: NOAN cooling maintains ≤48°C temperature rise at full load
Overload Protection: Dual-stage thermal cutoffs (IEC 60076 compliant)
Inrush Current Control: Limits startup surge to 2.5x rated current
Environmental Protection: IP55-rated enclosure for harsh conditions
Corrosion Resistance: Epoxy-coated core and tank
Technical Compliance
Manufactured to international standards:
IEC 60076 for power transformers
IEEE C57.12.00 for general requirements
CSA C22.2 No. 66 for North American markets
ISO 9001 quality management system
RoHS compliance for environmental safety
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