High-Current EMI Suppression with Advanced Thermal Management

Engineered for heavy industrial applications, the LQLVF 60kVA/2×150A Power Noise Filter delivers robust electromagnetic interference suppression for 50Hz single-phase systems. Featuring symmetric 0.4kV input/output configuration, dual 150A circuits, and ONAN cooling technology, this high-capacity solution provides >60dB attenuation up to 1MHz while maintaining optimal thermal stability and zero abnormal discharge at 3kV/1min insulation levels.

Technical Specifications

Performance Features

High-Current ONAN Cooling

Natural convection oil cooling maintains thermal stability during continuous 150A operation - no fans or external power required.

Symmetric Power Design

Identical 0.4kV input/output configuration ensures voltage stability with <0.8% regulation from no-load to full-load.

Extended Frequency Attenuation

Comprehensive noise suppression from 10kHz to 1MHz: >40dB (10-100kHz) and >60dB (100-1000kHz).

Design Advantages

• Ultra-High Current Capacity: Dual 150A circuits support the most demanding industrial loads

• Maintenance-Free Cooling: Sealed ONAN system with 10+ year service life

• Discharge-Free Insulation: Verified no abnormal discharge at 3kV/1min per IEC 60270

• Low-Impedance Path: Minimizes voltage drop while maximizing noise absorption

Industrial Applications

• Heavy industrial machinery power lines

• Large induction heating systems

• Industrial electrolysis plants

• High-power test laboratories

• Steel manufacturing equipment

• Single-phase arc furnaces

Key Benefits

• Exceptional Power Density: 60kVA capacity in compact ONAN-cooled package

• Broad-Spectrum Noise Control: Effective filtering starting at 10kHz

• Absolute Insulation Integrity: Verified no discharge at 3kV/1min testing

• Energy Efficient: >98.5% power transfer efficiency at full load

Installation Guidelines

1. Thermal Management:

• Maintain 150mm top clearance for heat dissipation

• Maximum ambient temperature: 45°C

• Vertical mounting orientation required

2. Electrical Connections:

• Use 120mm² copper conductors

• Terminal torque: 60Nm

• Ground with 35mm² minimum cable (resistance <0.5Ω)

3. Testing Protocol:

• Perform insulation resistance test at 5kV DC (min 1GΩ)

• Verify no abnormal discharge at 3kV/1min AC test

• Confirm attenuation with spectrum analyzer sweep (10kHz-1MHz)

• Check oil level indicator before commissioning

Why Choose This Filter?

• Industry-Leading Current Capacity: 150A per circuit in single-phase design

• Early-Intervention Noise Control: 10kHz starting point prevents harmonic propagation

• Guaranteed Insulation Integrity: Verified no abnormal discharge at 3kV

• Industrial Longevity: Designed for 24/7 operation in extreme environments

Compliance & Standards

• IEC 60270: Partial discharge measurements

• IEC 61000-6-2: Industrial immunity standards

• IEC 61000-6-4: Industrial emissions standards

• IEEE C57.12.00: Liquid-immersed transformer standards

• RoHS 3 (2015/863/EU) compliant