High-Capacity EMI Filtration

Designed for demanding industrial applications, the LQLVF 500kVA/2*166.6A power noise filter combines advanced ONAN cooling technology with exceptional EMI suppression capabilities. Operating at 3kV with dual 166.6A circuits, this solution delivers >60dB noise attenuation while maintaining background partial discharge levels below 3pC - critical for sensitive high-voltage environments.

Technical Specifications

Key Engineering Features

ONAN Cooling System

Natural oil convection with air cooling for zero-maintenance thermal management

Ultra-Low PD Design

<3pC background noise ensures measurement accuracy in HV testing

Broad-Spectrum Attenuation

Effective noise reduction from 40KHz to 2MHz

Heavy-Duty Construction

Robust <450kg design for industrial vibration resistance

Industrial Applications

• High-Voltage Laboratories: Precision measurement systems requiring <3pC noise floor

• Power Generation: Turbine control cabinet EMI suppression

• Industrial Manufacturing: Protection for CNC and robotic control systems

• Renewable Energy: Wind turbine converter harmonic filtering

• Railway Systems: Traction substation power conditioning

Thermal Management System

The ONAN cooling technology ensures stable operation through:

1. Natural oil circulation through cooling ducts

2. Optimized radiator surface area for heat dissipation

3. Thermal monitoring points for temperature verification

4. Designed for 55°C ambient temperature at full load

Thermal Performance: Maintains <65°C winding temperature during 60-minute full-load operation.

Installation & Maintenance

Mounting Requirements:

• Minimum floor loading capacity: 500kg/m²

• Clearance: 200mm top/bottom for air circulation

• Oil level inspection window accessibility

Operational Protocols:

• Pre-commissioning dielectric test at 2.5x rated voltage

• Annual oil sampling per IEC 60296 standards

• PD monitoring every 6 months

Compliance: Meets IEC 60076-2 for temperature rise and IEC 61000-6-2 for EMC immunity.