Advanced HV Measurement for Critical Infrastructure

The LQHVF 230kV/3000pF Capacitive Voltage Divider delivers laboratory-grade accuracy in field environments. Designed for high-voltage systems up to 253kV (110% rated voltage), this single-phase solution enables:

• Precision ratio measurements with ≤1% voltage error

• Dielectric loss analysis (

  <0.5% tan="">

• Frequency response testing (20-300Hz range)

• Corona-free operation at maximum voltage

Certified Performance

Exceeds IEC 60060-2 standards with 110% rated voltage withstand for 60 seconds and NAN (Natural Air Natural) cooling for thermal stability during continuous 1-hour operations.

Technical Specifications

Engineering Innovations

Corona-Free HV Interface

Aluminum alloy corona rings prevent partial discharge at 230kV+, with scalable connections for multi-stage configurations.

Modular Transport System

Removable pedestal and compact corona rings enable secure shipping and rapid onsite assembly.

Dual-Measurement Capability

Special lead-wire interface measures both single-stage and serial connection voltages via VF power sources.

Industry Applications

Substation Commissioning

Verifies switchgear insulation at 253kV per IEC 62271-200 with certified 1000:1 ratio.

Transformer Diagnostics

Measures dielectric loss tangent during maintenance with 300Hz frequency resolution.

Cable & GIS Testing

Performs withstand voltage tests on 230kV cables with corona-free connections.

Operational Safety Features

• Stabilized Base: Anti-tip design with removable pedestal

• Dual Grounding: Ensures equipotential bonding during tests

• Visual Corona Indicators: Aluminum rings show discharge inception

• Voltage Scalability: Adapts to single or two-stage configurations

"The 1000:1 ratio with ±1.5% accuracy eliminates calibration uncertainties in critical HV tests - essential for compliance certification."
               - Senior Engineer, Global Power Testing Lab

Operational Protocol

1. Pre-Test: Verify all corona ring connections

2. Connection: Use shielded measuring leads to VF source

3. Duration: Maximum 60 minutes continuous operation

4. Safety: Maintain 5m clearance during 253kV tests

5. Post-Use: Execute 15-minute discharge cycle

Compliance & Standards

Designed to meet global electrical testing standards:

• IEC 60060-1/2: High-voltage test techniques

• IEEE 4: Standard for HV testing

• IEC 60270: Partial discharge measurements

• OSHA 1910.269: Electrical safety requirements