Product Overview

The LQLVF 300kVA/2*750A Power Noise Filter delivers exceptional electromagnetic interference (EMI) suppression for industrial 0.4kV power systems. Engineered for high-current applications with dual 750A circuits, this filter provides critical noise attenuation while seamlessly integrating into sub-stage switchgear cabinets. The ONAN cooling system ensures reliable performance in demanding industrial environments.

Core Technical Specifications

Premium Attenuation Performance

• 10kHz-100kHz Range: >40dB noise suppression

• 100kHz-1MHz Range: >60dB noise suppression

This advanced filtering technology eliminates electromagnetic interference from:

• Variable frequency drives (VFDs)

• High-power motor controllers

• Industrial rectifiers and converters

• Switching power supplies

High-Current Design Features

• Dual 750A Circuits: Robust current handling for industrial applications

• Switchgear Integration: Compact design for direct cabinet installation

• ONAN Cooling: Maintenance-free operation up to 50°C ambient

• Heavy-Duty Construction: Engineered for 24/7 industrial operation

Industrial Applications

• Manufacturing Plants: High-power production lines and machinery

• Industrial Power Distribution: 0.4kV switchgear and busway systems

• Process Industries: Chemical plant motor control centers

• Material Handling: Conveyor systems and large-scale automation

Specifically designed for applications requiring 500A+ current handling with precision noise control.

Switchgear Integration Benefits

• Direct installation eliminates external wiring complexity

• Protects sensitive control circuits within switchgear

• Reduces electromagnetic radiation in control rooms

• Prevents false tripping of protection relays

• Compatible with IEC 61439 switchgear standards

Safety & Reliability

• 3kV/1min insulation withstand voltage

• Complies with IEC 60939-2 passive filter standards

• Meets IEC 61000-3-12 harmonic emission requirements

• Designed per IEC 60076 power transformer guidelines

Operational Benefits

• Extends equipment lifespan by reducing electrical stress

• Maintains signal integrity in sensitive instrumentation

• Reduces motor bearing currents and winding stress

• Improves power quality to meet IEEE 519 standards

• Minimizes downtime from EMI-related malfunctions