Isolation Transformer
LQHIT 70KVA Three-Phase Isolation Transformer: 415V Input to 380V/220V Output
Industrial-Grade Power Conditioning Solution
Designed for heavy-duty applications, this three-phase oil-immersed transformer features dual electrostatic shields that reduce electromagnetic interference (EMI) by up to 55dB. With 110kV insulation-grade transformer oil and specialized shielding between HV/LV windings, it effectively minimizes partial discharge interference in critical industrial systems, ensuring stable power for sensitive equipment.
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Capacity | 70 kVA |
| Input Voltage | 415V AC (Three Phase) |
| Output Voltages | 380V AC + 220V AC (Three Phase) |
| Output Currents | 173A (380V) / 18A (220V) |
| Insulation Medium | 25# Transformer Oil (IEC 60296) |
| Insulation Level | 110 kV |
| Dimensions (L×W×H) | 750mm × 650mm × 780mm |
| Weight | 320kg |
| Cooling System | Oil-Immersed (ONAN) |
Advanced Engineering Features
Dual Electrostatic Shielding
Copper-mesh barriers between HV-LV and LV-coil assemblies provide 360° EMI protection, attenuating common-mode noise >50dB 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 40% for enhanced safety in high-voltage environments.
Three-Phase Balanced Design
Precision-engineered windings maintain<2% voltage="" imbalance="" across="" phases="">
Performance Comparison
| Metric | Standard Transformers | LQHIT 70KVA |
|---|---|---|
| Partial Discharge Reduction | 40-50% | >85% |
| Voltage Stability | ±5% | ±2.5% |
| Dielectric Strength | 35-50kV | 110kV |
| Continuous Operation | 80% load capacity | 100% load capacity |
Industrial Applications
Manufacturing Plants: Clean power for CNC machines and robotic assembly lines
Power Substations: Buffer sensitive monitoring equipment from grid transients
Industrial Test Labs: Isolate partial discharge measurement circuits
Water Treatment Facilities: Stable power for high-torque pump systems
Mining Operations: Reliable operation in high-vibration environments
Installation & Safety
Compact Footprint: 0.49m² base area for space-efficient installation
Heavy-Duty Construction: 320kg robust design with 3mm steel tank walls
Enhanced Safety: Pressure-relief diaphragm and over-temperature cutoffs (IEC 60076 compliant)
Environmental Protection: IP55-rated enclosure for dust and moisture resistance
Vibration Resistance: Shock-absorbing mounts rated for 6G operational vibration
Technical Compliance
Meets international standards including:
IEC 60076 for power transformers
IEC 61558-2-4 for safety of isolating transformers
IEEE C57.12.00 for general requirements
ISO 9001 for manufacturing quality
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