Transformer-Synchronized Noise Filtration

Engineered for demanding industrial environments, the LQLVF-25kVA/2×50A Power Noise Filter delivers robust electromagnetic interference suppression in 0.5kV power systems. With dual 50A circuits and >70 quality factor reactors, this heavy-duty solution provides >60dB attenuation across critical frequency bands while operating continuously in sync with connected transformers.

Technical Specifications

Performance Highlights

High-Efficiency Reactors

Quality factor >70 ensures minimal power loss (≤0.2%) while providing superior broadband noise absorption.

Synchronized Operation

Designed for continuous duty matching transformer operational profiles - no time limitations at 100% load.

Broadband Noise Suppression

Effective EMI attenuation across multiple frequency ranges: >40dB (40-100kHz) and >60dB (100kHz-1MHz).

Robust Industrial Design

• Heavy-Duty Construction: 280kg ruggedized design for vibration-resistant performance

• Thermal Management: Natural convection cooling for continuous operation

• Switchgear Integration: Pre-engineered for direct installation in sub-stage cabinets

• Insulation Integrity: 3kV/1min dielectric withstand voltage (exceeds IEC 60664-1)

Industrial Applications

• Medium-voltage industrial switchgear

• Transformer substations

• Manufacturing plant power distribution

• Heavy machinery control cabinets

• Process industry power quality systems

Key Advantages

• Continuous Duty Rating: Unlimited operation at full 50A×2 load when paired with transformers

• Zero Maintenance: Solid-state design with no moving parts or consumables

• Harmonic Immunity: Stable performance in harmonic-rich environments (THD < 8%)

• Global Compatibility: 50/60Hz dual-frequency operation

Installation Guidelines

1. Structural Support: Verify cabinet floor rating ≥300kg/m²

2. Clearance Requirements: Maintain 75mm side ventilation space

3. Electrical Connections: Use 35mm² copper conductors (torque terminals to 25Nm)

4. Commissioning Test:

• Verify insulation resistance >100MΩ (per IEEE 43)

• Confirm attenuation with spectrum analyzer sweep

Why Choose This Filter?

• Transformer-Grade Reliability: Matches operational lifespan of connected transformers (25+ years)

• Energy Efficient: >99% power transfer efficiency at full load

• Enhanced Safety: Double-barrier insulation system

• Retrofit Ready: Standard switchgear cabinet dimensions

Compliance & Standards

• IEC 61000-6-2: Industrial immunity standards

• IEC 61000-6-4: Industrial emissions standards

• IEEE C57.12.91: Transformer test standards

• RoHS 3 (2015/863/EU) compliant