Single-Stage High Voltage Design

This advanced 750kV voltage divider utilizes a robust single-stage capacitor design, delivering exceptional performance for the most demanding impulse testing applications:

• Unibody HV Capacitor: 750kV/400pF single-stage construction eliminates interstage connections

• Precision Low-Voltage Arm: 0.8μF capacitor bank ensures accurate signal division

• Optimized Voltage Ratio: 2000:1 scaling provides excellent measurement resolution

• Compact Footprint: Single-stage design reduces overall system size versus multistage alternatives

Key Performance Specifications

Engineering Advantages

Ultra-Fast Response

≤100ns partial response time captures complete lightning wave characteristics including:

• Wavefront timing (1.2μS)

• Wavetail duration (50μS)

• Transient oscillations

Measurement Precision

• ≤±1% scale factor uncertainty

• 2000:1 ratio maintains signal integrity

• Low-inductance design minimizes waveform distortion

Reliable Operation

• ≤20% over-impulse tolerance

• GB311 compliant square wave response

• Stable performance across 0-9.9μS range

Standards Compliance

• GB311 Standard: Full compliance for square wave response characteristics (0-9.9μS range)

• IEC 60060-1: High-voltage test techniques

• IEEE Std 4: Standard for high-voltage testing

Typical Applications

• Power Transformer Testing: 750kV class impulse withstand verification

• GIS Commissioning: Gas-insulated switchgear impulse tests

• Research Laboratories: High-voltage dielectric studies

• Lightning Protection: Surge arrester performance validation

• Component Testing: Bushings, insulators, and cable systems

Operational Guidelines

• Clearance Requirements: Maintain minimum 4.5m radius during 750kV tests

• Calibration: Perform biannual capacitance verification

• Connection: Use ≤3m shielded coaxial cables with proper impedance matching

• Environmental: Operate in conditions below 85% relative humidity

• Maintenance: Quarterly visual inspection of HV electrode surfaces