High-Power EMI Suppression with Advanced Thermal Management

Engineered for demanding industrial applications, the LQLVF-41.5kVA/2×100A Power Noise Filter delivers robust electromagnetic interference suppression for 50Hz single-phase systems. Featuring symmetric 0.415kV input/output configuration, dual 100A circuits, and ONAN cooling technology, this high-capacity solution provides >60dB attenuation up to 1MHz while maintaining optimal thermal stability.

Technical Specifications

Performance Features

ONAN Cooling Technology

Natural convection oil cooling ensures thermal stability during continuous 100A operation without external power requirements.

Symmetric Power Architecture

Identical 0.415kV input/output configuration eliminates voltage conversion losses and maintains system stability.

Extended Frequency Attenuation

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

Design Advantages

• High-Current Capacity: Dual 100A circuits support industrial heavy loads

• Passive Cooling: Maintenance-free ONAN system eliminates fans and moving parts

• Voltage Stability:

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• Robust Insulation: 3kV/1min dielectric strength exceeds IEC 60664-1 requirements

Industrial Applications

• Industrial motor control centers

• High-power single-phase furnaces

• Large-scale HVAC systems

• Plastic injection molding machinery

• Single-phase renewable energy farms

Key Benefits

• High Power Density: 41.5kVA capacity in compact ONAN-cooled package

• Early-Stage Noise Suppression: Effective filtering starting at 10kHz

• Zero Maintenance: Sealed ONAN system with 10+ year service life

• Energy Efficient: >98.7% power transfer efficiency at full load

Installation Guidelines

1. Thermal Management:

• Maintain 100mm top clearance for heat dissipation

• Ambient temperature ≤40°C

• Vertical mounting orientation required

2. Electrical Connections:

• Use 95mm² copper conductors

• Terminal torque: 45Nm

• Ground with 25mm² minimum cable

3. Testing Protocol:

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

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

• Check oil level indicator before commissioning

Why Choose This Filter?

• High-Current ONAN Design: Unique cooling solution for 100A single-phase applications

• Extended Frequency Coverage: 10kHz starting point for comprehensive noise control

• Industrial Reliability: Designed for 24/7 operation in harsh environments

• Precision Voltage Matching: Symmetric input/output prevents system disruptions

Compliance & Standards

• IEC 61000-6-2: Industrial immunity standards

• IEC 61000-6-4: Industrial emissions standards

• IEEE C57.12.00: General requirements for liquid-immersed transformers

• RoHS 3 (2015/863/EU) compliant