Precision High-Voltage Testing Across 50-300Hz Spectrum

The LQHVF 200kV/1000pF capacitor delivers laboratory-grade accuracy across an unprecedented 50-300Hz frequency range. Engineered for resonant test systems, this dual-function solution combines voltage division and resonant capacitance with ≤0.2% dielectric loss and 2500:1 voltage ratio - setting new standards for high-voltage testing flexibility.

"The industry's widest frequency range capacitor divider - maintaining ±1% accuracy from power frequency (50Hz) to medium frequency (300Hz) for comprehensive resonant testing."

Technical Specifications

Advanced Connection System

[Diagram Placeholder: Resonant test circuit configuration]

Fig 1: Connection to variable frequency power source and measurement systems

Connection Features

• Corona-Free HV Connection: Scalable terminals for different voltage levels

• Special Measuring Lead-Wire: Shielded cable for noise-free LV measurement

• Multi-Configuration Support:

• Single-stage voltage measurement

• Two-stage series connection

• Resonant circuit integration

Structural Components

Aluminum Corona Rings

Detachable design for transport and storage efficiency

Removable Base

Stable platform with vibration damping for precise measurements

Oil-Immersed Core

Mineral oil insulation with ONAN cooling for thermal stability

Sealed Enclosure

Hermetic sealing prevents contamination and maintains dielectric properties

Resonant Test Configurations

Series Resonant Testing

• Frequency range: 50-300Hz

• Test voltage: Up to 200kV

• Ideal for: Long cable testing, large transformers

Parallel Resonant Testing

• Frequency range: 45-250Hz

• Test voltage: Up to 180kV

• Ideal for: GIS testing, rotating machines

Performance Comparison

Key Advantages

Extended Frequency Range

50-300Hz operation for comprehensive resonant testing

Ultra-Low Dielectric Loss

≤0.2% ensures minimal energy dissipation in resonant circuits

Enhanced Voltage Ratio

2500:1 provides higher resolution measurements

Transport Optimized

Detachable corona rings and base for efficient shipping

Industry Applications

Cable Resonant Testing

Frequency-tuned testing of long transmission cables

Transformer Testing

Induced voltage tests at variable frequencies

GIS Commissioning

Resonant withstand testing of gas-insulated switchgear

Rotating Machine Testing

Stator winding tests at multiple frequencies

Research & Development

Frequency-dependent dielectric studies

Partial Discharge Analysis

Multi-frequency PD measurement and location

Compliance & Standards

Testing Standards

IEC 60270 • IEC 60060 • IEEE 4

Safety Standards

IEC 61010 • EN 50191

Measurement Accuracy

IEC 61869-11 • IEEE C57.13

Quality Assurance

ISO 9001 • ISO/IEC 17025

Operational Benefits

Reduces resonant test system complexity by 40% - functioning as both measurement device and resonant capacitor with laboratory-grade ±1% accuracy.

• Cost Efficiency: Eliminates need for separate divider and resonant capacitor

• Time Savings: Single setup for multiple test configurations

• Enhanced Accuracy: ≤0.2% dielectric loss minimizes measurement error

• Future-Proof: Compatible with all major resonant test systems

• Safety Margin: 220kV insulation withstand exceeds standard requirements

Why Choose This Resonant Capacitor Divider?

The LQHVF 200kV/1000pF represents the pinnacle of resonant testing technology. Its unique 2500:1 voltage ratio provides enhanced measurement resolution, while the 50-300Hz frequency range covers all standard power frequencies and critical resonant testing bands. The ≤0.2% dielectric loss ensures minimal energy dissipation in resonant circuits, and the ONAN cooling maintains thermal stability during extended 60-minute tests. With its detachable corona rings and removable base, the system ships efficiently and installs quickly. Certified to withstand 220kV for 1 minute without discharge, this solution exceeds industry safety standards while providing unparalleled flexibility for high-voltage testing laboratories, cable manufacturers, and utility commissioning teams.