Symmetric EMI Suppression for Industrial Power Systems

The LQLVF-30kVA/2×75A Power Noise Filter delivers precision electromagnetic interference suppression for 50Hz single-phase industrial systems. Featuring symmetric 0.4kV input/output configuration and dual 75A circuits, this high-capacity solution provides >60dB attenuation up to 1MHz while maintaining robust 3kV/1min insulation integrity.

Technical Specifications

Performance Features

Symmetric Power Design

Identical 0.4kV input/output configuration ensures voltage stability without conversion losses - ideal for direct switchgear integration.

Broadband Attenuation

Superior noise suppression across frequency spectrum: >40dB (10-100kHz) and >60dB (100-1000kHz).

High-Current Capacity

Dual 75A circuits support continuous industrial loads with minimal voltage drop (<1%).

Design Advantages

• Single-Phase Optimization: Specialized for 50Hz industrial power networks

• Voltage-Stable Architecture: Maintains consistent 0.4kV output under variable loads

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

• Low-Impedance Path: Minimizes insertion loss while maximizing noise absorption

Industrial Applications

• Single-phase industrial machinery power lines

• HVAC and compressor motor control cabinets

• Furnace and heating element power supplies

• Agricultural irrigation systems

• Single-phase renewable energy inverters

Key Benefits

• Precision Filtering: Effective suppression starting at 10kHz for early-stage noise elimination

• Power Integrity: Input/output voltage symmetry prevents system disruptions

• High Reliability: Industrial-grade components rated for 100,000+ operational hours

• Easy Integration: Pre-configured for sub-stage switchgear cabinet installation

Installation Guidelines

1. Electrical Connections:

• Input/output: 70mm² copper conductors

• Terminal torque: 35Nm

2. Grounding:

• Minimum 16mm² ground wire

• Ground resistance <0.5Ω

3. Testing Protocol:

• Verify insulation resistance >500MΩ at 2.5kV DC

• Confirm attenuation with frequency sweep test (per IEEE 115)

Why Choose This Filter?

• Extended Frequency Range: Effective noise suppression starting at 10kHz (vs. typical 40kHz)

• Symmetric Performance: Identical input/output specs simplify system design

• High Power Handling: 30kVA capacity in compact form factor

• Industrial Durability: Corrosion-resistant enclosure for harsh environments

Compliance & Standards

• IEC 61000-6-2: Industrial immunity standards

• IEC 61000-6-4: Industrial emissions standards

• IEEE 115: Test procedures for single-phase machines

• RoHS 3 (2015/863/EU) compliant