Product Overview

The LQLVF 350kVA/2*875A Power Noise Filter delivers premium electromagnetic interference suppression for industrial 0.4kV power systems. Designed specifically for space-constrained switchgear cabinets, this high-density filter combines exceptional 875A current handling with 60dB noise attenuation. The ONAN cooling system ensures reliable performance in high-temperature industrial environments while maintaining compact dimensions.

Core Technical Specifications

Premium Noise Attenuation

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

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

This advanced filtering technology eliminates electromagnetic interference from:

• High-power variable frequency drives (VFDs)

• Industrial servo motors and actuators

• Power conversion systems

• Switching power supplies in heavy machinery

High-Density Design Features

• 875A Current Capacity: Industry-leading current density for compact spaces

• Switchgear Integration: Optimized for sub-stage cabinet installation

• ONAN Cooling: Efficient thermal management in confined spaces

• Space-Efficient Construction: Maximum performance in minimal footprint

• Dual-Circuit Design: Redundant operation for critical systems

Industrial Applications

• High-Power Manufacturing: Foundries, stamping presses, and extrusion lines

• Industrial Power Distribution: 0.4kV switchgear in crowded substations

• Material Processing: Crushers, grinders, and bulk handling systems

• Energy Infrastructure: Compact substations and power distribution units

Ideal for applications requiring 800A+ current handling in space-limited installations.

Switchgear Integration Advantages

• Direct cabinet installation minimizes footprint

• Eliminates need for external filter enclosures

• Reduces wiring complexity and installation time

• Protects sensitive control circuits within switchgear

• Compatible with IEC 61439-2 low-voltage switchgear

Performance & Reliability

• 3kV/1min insulation withstand voltage

• Maintenance-free ONAN cooling operation

• Designed for 24/7 continuous operation

• Robust construction for high-vibration environments

• Ambient temperature range: -25°C to +55°C

Safety & Compliance

• Complies with IEC 60939-2 passive filter standards

• Meets IEC 61000-3-12 harmonic emission requirements

• Designed per IEC 60076 power transformer guidelines

• UL 508 industrial control equipment safety certified

• CE marked for European market compliance

Operational Benefits

• Prevents PLC and control system malfunctions

• Reduces motor bearing currents by up to 90%

• Extends equipment lifespan by eliminating electrical stress

• Improves power quality to IEEE 519 standards

• Minimizes production downtime from EMI issues