Isolation Transformer
LQHIT 110KVA Three-Phase Isolation Transformer: 380V Input to 380V/220V Output
Heavy-Duty Power Conditioning for Industrial Systems
Designed for demanding applications, this three-phase oil-immersed transformer features dual electrostatic shields that reduce electromagnetic interference (EMI) by up to 70dB. With 110kV insulation-grade transformer oil and specialized shielding between windings, it minimizes partial discharge interference in critical systems while supporting continuous 1-hour full-load operation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Capacity | 110 kVA |
| Input Voltage | 380V AC (Two Phase) |
| Output Voltages | 380V AC + 220V AC (Two Phase) |
| Output Currents | 263A (380V) / 45A (220V) |
| Insulation Medium | 25# Transformer Oil (IEC 60296) |
| Insulation Level | 110 kV |
| Load Cycle | 1 hour continuous at rated load |
| Dimensions (L×W×H) | 800mm × 700mm × 780mm |
| Weight | 520kg |
| Cooling System | ONAN (Oil Natural Air Natural) |
| Footprint Area | 0.56m² |
Advanced Engineering Features
Dual Electrostatic Shielding
Copper-mesh barriers between HV-LV and LV-coil assemblies provide 360° EMI protection, attenuating common-mode noise >65dB in the 10kHz-1MHz spectrum critical for industrial measurement systems.
110kV Insulation System
25# transformer oil with reinforced insulation barriers withstands 110kV dielectric strength, exceeding standard industrial requirements by 50% for enhanced safety in high-voltage environments.
High-Capacity Thermal Design
Optimized ONAN cooling maintains maximum 58°C temperature rise during continuous 1-hour full-load operation - ideal for peak demand applications.
Performance Comparison
| Metric | Standard Transformers | LQHIT 110KVA |
|---|---|---|
| Partial Discharge Reduction | 40-50% | >92% |
| Dielectric Strength | 35-50kV | 110kV |
| Continuous Full-Load Operation | 30 minutes | 60 minutes |
| Voltage Stability | ±5% | ±2.0% |
| Noise Suppression | 30-40dB | >70dB |
Industrial Applications
Manufacturing Plants: Power for CNC machines and robotic assembly lines
Power Substations: Buffer sensitive monitoring equipment from grid transients
Industrial Test Facilities: Isolate partial discharge measurement circuits
Mining Operations: Reliable power for high-torque equipment
Water Treatment Plants: Continuous operation for critical pump systems
Installation & Safety Features
Robust Construction: 520kg heavy-duty design with 5mm steel tank walls
Space-Optimized: 0.56m² footprint with vertical cooling fins
Enhanced Safety: Pressure-relief diaphragm and thermal cutoffs (IEC 60076 compliant)
Environmental Protection: IP55-rated enclosure for harsh conditions
Vibration Resistance: Shock-absorbing mounts rated for 6G vibration
Terminal Configuration: Dual-level bushings with anti-corrosion coating
Technical Compliance
Manufactured to international standards:
IEC 60076 for power transformers
IEC 61558-2-4 for isolating transformers
IEEE C57.12.00 for general requirements
ISO 9001 quality management system
RoHS compliance for environmental safety
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