Industry-Leading Precision for Critical HV Applications

The LQHVF 200kV/100pF capacitor sets new standards in high-voltage measurement with its unprecedented <1pC partial discharge performance. Engineered for 50Hz power systems, this oil-immersed solution combines voltage division and coupling functions with laboratory-grade ±1% accuracy—making it ideal for sensitive diagnostic applications where discharge detection is critical.

"The lowest PD capacitor in its class—delivering <1pC partial discharge at 200kV for precision measurement of insulation degradation in critical assets."

Technical Specifications

Optimized Oil-Immersed Structure

[Diagram Placeholder: Dual-diameter oil-immersed structure]

Fig 1: Tapered design with Ø320mm base and Ø650mm corona rings

Structural Components

• Oil-Immersed Core: Mineral oil insulation for maximum discharge suppression

• Removable Components:

1. Ø650mm aluminum corona rings (optimized for PD control)

2. V measurement arm (precision voltage division)

3. HV capacitor arm

4. Detachable stability base (Ø320mm)

• Tapered Design: Ø320mm base to Ø650mm corona ring configuration for optimal field distribution

Performance Advantages

Unmatched PD Sensitivity

<1pC detection threshold—10x more sensitive than standard dividers

Precision Measurement

±1% accuracy at 200kV for reliable diagnostic data

Thermal Stability

ONAN cooling maintains performance during 60-minute full-load tests

Optimized Field Distribution

Tapered design minimizes edge effects that cause measurement errors

Industry-Leading Partial Discharge Comparison

Critical Applications

Transformer Diagnostics

Early detection of winding insulation degradation

HV Cable Testing

Identification of micro-voids and impurities in insulation

Generator Stator Monitoring

Detection of slot discharge in turbine generators

Research & Calibration

Reference standard for PD measurement systems

Aerospace HV Systems

Testing of critical aircraft electrical components

Medical Imaging Equipment

Quality assurance for X-ray generator insulation

Compliance & Standards

Partial Discharge

IEC 60270 • IEEE 4 • CIGRE WG D1.11

Safety & Construction

IEC 60060 • IEC 60358 • EN 62155

Measurement Accuracy

IEC 61869-11 • IEEE C57.13

Quality Assurance

ISO 9001 • ISO/IEC 17025

Operational Benefits

Enables detection of insulation defects 6-12 months earlier than conventional PD measurement systems—preventing catastrophic failures in critical assets.

• Predictive Maintenance: Identify insulation deterioration before visible damage occurs

• Reduced Downtime: Prevent unexpected failures in critical infrastructure

• Extended Asset Life: Early intervention increases equipment lifespan by 20-40%

• Safety Enhancement: Detect potential flashover risks before incidents occur

• Regulatory Compliance: Meet strict PD monitoring requirements for grid assets

Why Choose This Ultra-Low PD Capacitor?

The LQHVF 200kV/100pF represents the pinnacle of partial discharge measurement technology. Its specialized oil-immersed design with oversized corona rings (Ø650mm) creates optimized electric field distribution that suppresses external discharge activity. The tapered profile (Ø320mm base to Ø650mm corona) further enhances measurement integrity by minimizing edge effects. With certified <1pC partial discharge levels, this solution enables predictive maintenance programs capable of identifying insulation weaknesses months before conventional systems detect issues. Whether used in high-voltage laboratories, power generation facilities, or critical infrastructure monitoring, it delivers unparalleled sensitivity for the most demanding diagnostic applications.