Ultra-Low Noise Filtration Solution

Designed for critical industrial environments, the LQLVF 750kVA/2x119A power noise filter delivers industry-leading EMI suppression with unprecedented <1pC background partial discharge levels. Featuring ONAN cooling technology and dual-circuit design, this high-capacity solution supports 1875A operations at 0.4kV with >60dB noise attenuation across wide frequency bands.

Technical Specifications

Breakthrough Performance Features

Ultra-Low PD Technology

Industry-leading <1pC background noise for precision-sensitive applications

High-Current Capacity

1875A operational current for heavy industrial loads

Advanced ONAN Cooling

Oil-air thermal management for intensive duty cycles

Robust Insulation

5kV/1min dielectric strength for extreme conditions

Duty Cycle Management

Optimized for intermittent high-load operations:

• 5-minute operational bursts at 100% rated load

• 30-minute cooling periods for thermal recovery

• 20 cycles/day maximum operational profile

• Real-time thermal monitoring via integrated sensors

Thermal Safety: Automatic shutdown at 85°C winding temperature with manual reset.

Critical Applications

• High-Precision Laboratories: EMI-sensitive measurement equipment

• Industrial Automation: Robotic control system power conditioning

• Energy Infrastructure: Substation switchgear noise suppression

• Semiconductor Manufacturing: Clean power for lithography systems

• Research Facilities: Particle accelerator power systems

Installation & Operation

Mounting Requirements:

• Vibration-isolated foundation with ≥600kg load capacity

• 300mm clearance around cooling surfaces

• Ambient temperature: -20°C to +50°C

Operational Protocols:

• Pre-commissioning insulation test at 5kV DC for 1 minute

• Oil temperature monitoring during operation cycles

• Quarterly PD verification per IEC 60270 standards

• Annual oil analysis per ASTM D3612

Compliance: Meets IEC 60076-14 for liquid-immersed transformers and IEC 61000-6-5 for industrial EMC.