Isolation Transformer
LQHIT 80KVA/415V Single-Phase Isolation Transformer with Dual Electrostatic Shielding
Precision Power Isolation for Critical Industrial Systems
Engineered for continuous operation in demanding environments, this oil-immersed isolation transformer features dual electrostatic shields that reduce electromagnetic interference (EMI) by up to 65dB. The specialized shielding between HV/LV windings and coil assemblies minimizes partial discharge interference in sensitive measurement systems, ensuring signal integrity for precision instruments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Capacity | 80 kVA |
| Phase Configuration | Single Phase |
| Input Voltage | 415V AC |
| Output Voltage | 415V AC |
| Rated Current | 193A |
| Impedance Voltage | 8% |
| Operating Duty | Continuous (Same as Reactor) |
| Dimensions (L×W×H) | 700mm × 500mm × 800mm |
| Weight | 200kg |
| Cooling System | ONAN (Oil Natural Air Natural) |
| Footprint Area | 0.35m² |
Advanced Engineering Features
Dual Electrostatic Shielding
Copper-foil barriers between HV-LV and LV-coil assemblies create a Faraday cage effect, attenuating common-mode noise >60dB in the 10kHz-2MHz range critical for precision measurements.
Optimized 8% Impedance Design
Precisely calibrated impedance provides ideal balance: limits fault currents while maintaining ±2.5% voltage regulation during 20-120% load fluctuations.
Oil-Immersed Thermal Management
Mineral oil cooling enables 24/7 continuous operation at full load with maximum 52°C temperature rise - 30% more efficient than dry-type transformers.
Performance Comparison
| Metric | Industry Standard | LQHIT 80KVA |
|---|---|---|
| Noise Suppression | 35-45dB | >65dB |
| Partial Discharge Reduction | 45-55% | >90% |
| Voltage Stability | ±5% | ±2.5% |
| Continuous Operation | 80% load capacity | 100% load capacity |
Industrial Applications
High-Voltage Test Laboratories: Isolate PD measurement circuits from grid harmonics
Industrial Automation Systems: Clean power for PLCs and servo drives
Power Substations: Buffer sensitive monitoring equipment
Renewable Energy Plants: Stabilize output in solar/wind converter stations
Research Facilities: Precision power for sensitive measurement devices
Installation & Safety Features
Compact Design: 0.35m² footprint - 30% smaller than comparable units
Robust Construction: 200kg weight with reinforced tank structure
Enhanced Safety: Pressure-relief diaphragm and thermal cutoffs (IEC 60076 compliant)
Environmental Protection: IP55-rated enclosure for harsh industrial environments
Vibration Resistance: Shock-absorbing mounts rated for 5G vibration
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
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