HGCC 800KV/3300pF SF6 Gas Insulated Coupling Capacitor

Engineered for high-capacity energy measurement in ultra-high-voltage systems, the HGCC 800KV/3300pF gas insulated coupling capacitor combines exceptional capacitance (3300pF) with industry-leading partial discharge performance (<2pC). Its SF6 gas insulation ensures reliable operation in critical power transmission and testing applications.

Technical Specifications

Key Performance Features

1. Extended Operational Capability

• Continuous operation: 180 minutes at 800kV

• Mandatory cooldown: 60 minutes after full-load operation

• Designed for repetitive duty cycles in testing environments

2. Advanced Dielectric Performance

• Ultra-low dielectric loss (<0.5%) ensures measurement accuracy

• Minimal partial discharge (<2pC) prevents measurement interference

• Stable capacitance across 30–300Hz frequency range

3. Robust SF6 Gas Insulation

• Non-flammable insulation eliminates fire risks

• Hermetically sealed construction prevents gas leakage

• Maintenance-free design reduces lifecycle costs

Design Advantages

Precision Engineering

CNC-machined electrodes ensure uniform electric field distribution, critical for maintaining specified capacitance values under high voltage stress.

Thermal Management

Optimized gas flow design prevents hot spots during extended 180-minute operations at full rating.

Typical Applications

• HV Laboratory Testing: Reference capacitor for ratio measurements

• Transformer Manufacturing: Partial discharge test systems

• Grid Monitoring: Capacitive voltage dividers in substations

• Research Facilities: High-energy physics experiments

Compliance & Standards

Meets or exceeds requirements of:

• IEC 61869-1 (Instrument transformers)

• IEEE Std C57.13 (HV measurement accuracy)

• ANSI/NETA MTS-2021 (Maintenance testing)

Why This Capacitor Stands Out

1. Higher Capacitance: 3300pF capacity enables sensitive measurements in large systems

2. Wider Frequency Range: 30–300Hz operation covers power and harmonic frequencies

3. Extended Duty Cycle: 3-hour continuous operation supports prolonged tests