Ultra-High Capacity Solution for Critical Power Infrastructure

The LQHVF 600kV/3000pF system sets new standards in high-voltage measurement and energy transfer. Combining coupling capacitor functionality with precision voltage division in a single robust platform, this 3000pF system delivers superior performance for power transmission networks, HVDC converter stations, and high-power testing laboratories.

Key Performance Advantage: 50% higher capacitance than standard dividers enables more accurate measurements in high-interference environments while maintaining <0.25% dielectric loss.

Technical Specifications

Advanced Engineering Features

High-Capacity Design

3000pF capacitance provides enhanced signal stability for measurements in electromagnetically noisy environments.

Aluminum Corona Rings

Lightweight alloy rings eliminate corona discharge up to 660kV while enabling compact transportation.

Removable Stabilizing Pedestal

Engineered base with quick-disconnect mechanism ensures stability during field deployment.

Multi-Configuration Measurement

Special lead-wire system supports:

• Single-stage and two-stage serial voltage measurement

• Direct connection to variable frequency power sources

• Scalable corona-free HV connections

Enhanced ONAN Cooling

Optimized thermal management maintains ≤40°C oil temperature during continuous 600kV operation.

Ultra-Low PD Performance

<5pC partial discharge at full voltage enables precise insulation diagnostics.

Dual-Functional Operation

Coupling Capacitor Mode

High-efficiency energy transfer for power line carrier (PLC) systems with 3000pF coupling capacitance and <0.25% dielectric loss.

Precision Voltage Divider

2000:1 ratio with ≤1% accuracy for critical high-voltage measurements in test applications.

Industry Applications

HVDC Converter Stations                Power Transformer Testing                GIS Partial Discharge Analysis                Cable Resonant Testing                High-Power Labs

Energy Transmission Systems

Line coupling for PLC communication in 500kV+ transmission networks with high interference immunity.

Substation Commissioning

Precision voltage measurement during circuit breaker timing tests and switchgear diagnostics.

Rotating Machine Validation

Stator winding tests at industrial frequencies with enhanced signal-to-noise ratio.

Performance Validation

• Dielectric Strength: Certified 660kV withstand for 1 minute with zero discharge events

• Thermal Stability: ≤12°C oil temperature rise during 60-minute continuous operation

• Ratio Accuracy: Verified with NIST-traceable sources at multiple voltage points

• Partial Discharge: Third-party certified <5pC at 600kV per IEC 60270

Safety & Compliance

Electrical Safety

• Clearance distances: IEEE 1308-2020

• Dielectric testing: IEC 60060-1/-2

• Partial discharge: IEC 60270 Class II

Environmental Protection

• Outdoor operation: IP65 rating

• Transportation: IEC 60068-2-27 (shock)

• Vibration resistance: IEC 60068-2-6

Certifications

• UL 61010-1

• CE Marking

• RoHS Compliance