Setting new industry standards in high-voltage technology, the LQHVF 750kV/2000pF system delivers unprecedented partial discharge performance with laboratory-verified<2pc at="" 750kv.="" this="" dual-function="" solution="" combines="" precision="" measurement="" and="" power="" line="" communication="" capabilities="" in="" a="" single="">

Technical Specifications

Electrical Parameters

• Rated Voltage: 750kV AC

• Capacitance: 2000pF ±3%

• Frequency: 50Hz

• Dividing Ratio: 2000:1 nominal

Performance Metrics

• Accuracy: ≤±1% full scale

• Dielectric Loss: <0.2%

• Partial Discharge: <2pC at 750kV

• Insulation Withstand: 825kV (110%) for 1min

• Cooling System: ONAN (Oil Natural Air Natural)

Revolutionary Partial Discharge Performance

Industry Benchmark

15-20pC at 750kV

LQHVF Performance

<2pC at 750kV

PD measurements certified per IEC 60270 using calibrated ultra-high sensitivity detectors

Advanced Engineering Design

Breakthrough Insulation System

• Multi-layer polypropylene-film dielectric

• N2-inerted oil preservation (O₂ <0.3%)

• Triple-shielded electrode design

Transport-Optimized Components

• Quick-release aluminum corona rings

• Modular HV arm disassembly

• Compact shipping configuration (40% space reduction)

Precision Measurement Capabilities

Configuration Flexibility

• Single-stage operation (0-375kV)

• Two-stage series connection (0-750kV)

• 2000:1 precision ratio

Advanced Connection Technology

• Corona-free HV terminals (RIV <15dB)

• Variable frequency source integration (30-500Hz)

• Low-inductance measuring leads (≤2nH/m)

Safety & Reliability Systems

Structural Integrity

• Removable seismic-rated pedestal (IEC 60068-3)

• Interlocking stability mechanism

• Zero discharge at 825kV withstand test

Monitoring Systems

• Real-time PD monitoring (IEC 60270 compliant)

• Automatic de-energization on anomaly detection

• Oil quality sensors with predictive analytics

Certifications & Industry Applications

International Standards

• IEC 60060-1: High-voltage testing

• IEC 60270: Partial discharge measurement

• IEEE 4: Measurement standards

• IEC 60358: Coupling capacitors

Critical Applications

• Ultra-high-voltage transformer diagnostics

• GIS partial discharge mapping

• HVDC converter station monitoring

• Smart grid sensor calibration

Operational Guidelines

1. Pre-test insulation verification (>15GΩ)

2. Dual-grounding confirmation (IEC 61936)

3. Cooling system activation 30 min pre-operation

4. Continuous PD monitoring during tests

5. Bi-annual dielectric strength validation

Safety Notice: Requires Class E4 PPE per IEC 61482. Minimum clearance: 8 meters for 750kV operations.

Innovation Spotlight: Achieving <2pC PD

Our proprietary dielectric technology enables breakthrough PD performance through:

• Nanocomposite electrode coatings

• Electrostatic field optimization

• Vacuum-impregnated insulation

• Triple-barrier corona suppression