600KV/1000pF SF6 Capacitor Voltage Divider

This ultra-high voltage measurement device sets new standards in partial discharge performance and measurement stability, designed for critical applications in 550KV-class transmission systems and high-voltage laboratories.

Technical Specifications

Breakthrough Design Features

Ultra-Low Partial Discharge

• Special graded-ring electrode design

• Electropolished surfaces (Ra<0.4μm)

• Active SF6 gas monitoring system

• Integrated shielding against external interference

High-Capacity Performance

• 1000pF capacitance provides strong signal output

• Reduced susceptibility to electromagnetic noise

• Compatible with standard measuring instruments

• Optimized for long-distance cable runs

Typical Applications

EHV Transmission

• 550KV line voltage monitoring

• Substation automation systems

High Voltage Labs

• Reference standard for calibrations

• Ultra-low PD testing

GIS Monitoring

• Gas-insulated switchgear diagnostics

• Partial discharge localization

Installation Requirements

1. Controlled environment (max 5°C/hour temperature change)

2. Maintain SF6 pressure at 0.60±0.03MPa (at 20°C)

3. Use double-shielded coaxial cables (min 12mm diameter)

4. Grounding system resistance <1Ω (measured at DC)

5. Minimum clearances:

• 4m to grounded objects

• 7m to other HV equipment

Maintenance Schedule

Compliance Standards

• IEC 60060-1:2010 (High-voltage test techniques)

• IEC 60270:2015 (Partial discharge measurements)

• IEEE Std 4-2013 (Standard for HV testing)

• GB/T 16927.1-2011 (Chinese HV test standards)

Critical Requirement: The 1000pF capacitance requires measuring instruments with input impedance ≥5MΩ to maintain specified accuracy. Never exceed 30 minutes continuous operation at rated voltage.