Isolation Transformer
LQHIT 150KVA/415V-380V Isolation Transformer with Dual Electrostatic Shielding
Ultra-Quiet Power Conditioning for Precision Systems
Engineered for critical industrial applications, this transformer features dual electrostatic shields that reduce electromagnetic interference (EMI) by up to 80dB while maintaining<60db operational="" noise.="" the="" specialized="" copper-mesh="" barriers="" between="" windings="" minimize="" partial="" discharge="" interference="" in="" sensitive="" measurement="" systems="">
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Capacity | 150 kVA |
| Phase Configuration | Single Phase |
| Input Voltage | 415V AC (0.415kV) |
| Output Voltage | 380V AC (0.38kV) |
| Input Current | 209A |
| Output Current | 228A |
| Connection Group | Tn/yn |
| Impedance Voltage | <6% |
| Noise Level | <60dB(A) at 1m distance |
| Cooling System | ONAN (Oil Natural Air Natural) |
| Frequency | 50Hz |
| Dielectric Medium | 25# Transformer Oil (IEC 60296) |
Advanced Engineering Features
Dual Electrostatic Shielding
Independent copper-foil barriers between HV-LV and LV-coil assemblies provide 360° EMI protection, attenuating common-mode noise >75dB in the 10kHz-1MHz spectrum critical for precision measurements.
Ultra-Low Impedance Design
Optimized <6% impedance provides superior voltage regulation (±1.5%) while maintaining exceptional efficiency (98.2% at full load) - outperforming standard industrial transformers by 15%.
Silent Operation Technology
Specialized core construction and vibration-damping mounts achieve <60dB noise levels - 30% quieter than comparable transformers - ideal for noise-sensitive environments.
Performance Comparison
| Metric | Standard Transformers | LQHIT 150KVA |
|---|---|---|
| Partial Discharge Reduction | 45-55% | >96% |
| Voltage Stability | ±5% | ±1.5% |
| Operational Noise | 65-75dB | <60dB |
| Efficiency at Full Load | 95-96% | 98.2% |
| Impedance Voltage | 8-10% | <6% |
Industrial Applications
Precision Manufacturing: Clean power for CNC machines and semiconductor fabrication
Research Laboratories: Noise-free supply for sensitive measurement equipment
Medical Imaging Facilities: Stable power for MRI and CT scanners
Broadcast Studios: EMI-free operation for audio/video production
Data Centers: Reliable power conditioning for server racks
Installation & Safety Features
Tn/yn Connection Group: Provides neutral grounding for enhanced safety
Advanced Cooling System: Optimized radiator fins maintain ≤55°C temperature rise
Overload Protection: Thermal cutoffs trigger at 85°C (IEC 60076 compliant)
Vibration Control: Multi-stage damping mounts reduce noise transmission
Environmental Protection: IP55-rated enclosure for dust/moisture resistance
Corrosion Resistance: Epoxy-coated core and tank for humid environments
Technical Compliance
Manufactured to international standards:
IEC 60076 for power transformers
IEC 61558-2-4 for isolating transformers
IEEE C57.12.01 for general requirements
ISO 9001 quality management system
RoHS compliance for environmental safety
EN 50588 for noise emission standards
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