Injection Capacitor
HTH 250kV/100pF Ultra-High Voltage Injection Capacitor
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Voltage | 250kV AC (50/60Hz) |
| Nominal Capacitance | 100pF ±1% |
| Partial Discharge | <1pC at rated voltage |
| Dielectric Loss | <0.5% tanδ |
| Voltage Ratio | 1000:1 (±1% accuracy) |
| Dimensions | Ø350/Ø700 × 2500mm |
| Weight | <170kg |
Advanced Design Features
Dual Corona Ring System: Ø350/Ø700mm optimized profile for maximum corona suppression
Modular Construction: Removable base for easy maintenance and calibration
Cooling System: ONAN (Oil Natural Air Natural) cooling
HV Arm Design: 2500mm insulated column with triple shielding
Performance Characteristics
| Operating Time | 60 minutes continuous at 250kV |
| Frequency Range | 50Hz-60Hz operation |
| Temperature Stability | ±0.15%/K capacitance drift |
Typical Applications
Calibration of 250kV+ voltage measurement systems
Reference standard for ultra-high voltage PD testing
Dielectric loss analysis of EHV transformers
GIS and cable termination testing
Quality Certifications
IEC 60270:2015 (Partial discharge measurements)
IEEE Std 4-2013 (High-voltage testing techniques)
GB/T 16927.1-2011 (High-voltage test techniques)
Engineering Notes
The capacitor achieves <1pC PD level through:
Ultra-clean mineral oil processing
Precision-wound foil electrodes
Triple-shielded HV terminal design
