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600kV ~ 800kV Range

LQHVF 800kV/3500pF High-Voltage Divider | Precision Measurement & PD Testing

800kV capacitive voltage divider with 2000:1 ratio, <0.2% dielectric loss, and ≤2pC partial discharge. Features ONAN cooling, 880kV withstand, and modular design.


  • US$ 16,973.00
  • Lead time: 45 days

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Product Details

Product Tags

LQHVF 800kV/3500pF Coupling Capacitor & Capacitive Voltage Divider

Engineered for ultra-high-voltage applications, the LQHVF 800kV capacitive divider delivers laboratory-grade precision in field environments. With dual-unit modular design and industry-leading ≤2pC partial discharge performance, it's ideal for critical infrastructure testing.

Core Technical Specifications

ParameterSpecificationStandard
Rated Voltage800kVIEC 60060-1
Configuration2 units in series-
Total Capacitance3500pFIEC 60358
Single Unit Capacitance7000pF
Dividing Ratio2000:1-
Measurement Accuracy±1%IEC 60060-2
Dielectric Loss< 0.2%IEC 60247
Partial Discharge≤2pC @ 100% voltageIEC 60270
Insulation Withstand880kV (110%) for 1 minuteIEEE 4
Cooling SystemONAN (Oil Natural Air Natural)IEC 60502

Advanced Engineering Features

Modular Series Design

Two 400kV/7000pF units connected in series provide:

  • Transport-friendly configuration (reduced height/weight)

  • Individual unit testing capability

  • Redundancy for critical operations

Corona-Free Operation

  • Aluminum alloy corona rings optimized for 800kV

  • Detachable rings for compact transportation

  • Scalable HV connections for different test configurations

Precision Measurement System

Special lead-wire connects directly to variable frequency power sources for:

  • Single-stage and two-stage serial voltage measurements

  • Harmonic distortion < 0.5%

  • Automatic temperature compensation

Structural Advantages

Optimized Mechanical Design

  • Removable Pedestal: Provides stability while enabling rapid redeployment

  • ONAN Cooling: Natural oil convection maintains <55°C at full load

  • Transport-Optimized: Componentized assembly fits standard HV equipment trailers

Performance Validation Tests

TestConditionResult
Partial Discharge800kV continuous≤2pC sustained
Dielectric Withstand880kV for 60 secondsNo flashover/corona
Thermal StabilityAmbient 40°C at 100% loadOil temp rise <30K
Ratio Accuracy300-800kV range±1% linearity

Industry Applications

Substation Commissioning

800kV GIS testing with 2000:1 ratio for precise RMS measurement

Partial Discharge Mapping

≤2pC sensitivity for transformer/cable defect detection

Renewable Energy Grids

HVDC converter station monitoring with VF power source compatibility

Compliance & Certification

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

  • IEEE 4: Standard for HV testing

  • IEC 60270: Partial discharge measurements

  • IEC 60137: Insulated bushings

All units include NIST-traceable calibration and dielectric loss test certificates.

Field Deployment Tip

For PD measurements above 600kV, maintain relative humidity <70% and use shielded measuring leads to preserve ≤2pC sensitivity.

Ordering Information

Package includes: Two capacitor units, aluminum corona rings, removable pedestal, HV measuring lead-wire kit, and calibration documents. Request factory test reports for 880kV withstand validation.

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