Block Capacitor
High-Voltage Block Capacitors for Combined Test System Protection
Block capacitors serve as critical protective components in combined high-voltage test systems, preventing damage from voltage overshoots during AC dielectric, DC withstand, and impulse voltage testing.
Key Features
Voltage Range: Up to 3600kV (customizable)
Capacitance Range: Up to 600nF
Configuration Options:
Horizontal type (free-standing)
Vertical type (holder-supported)
Installation: Indoor or outdoor (weatherproof designs)
Design Specifications
| Parameter | Specification |
|---|---|
| Rated Voltage | Customizable up to 3600kV |
| Capacitance | Up to 600nF |
| Insulation Type | Porcelain or composite insulators (outdoor use) |
| Structural Design | Horizontal/Vertical orientation |
Applications in Test Systems
System Protection
AC/DC Combined Test Systems: Blocks DC offset during AC dielectric tests
DC+Impulse Systems: Filters impulse transients during DC withstand tests
Multi-Function Test Bays: Enables safe switching between test modes
Installation Examples
Between AC power source and DC test set
At impulse generator output terminals
Integrated into test transformer secondary circuits
Structural Options
Horizontal Type
Free-standing design for compact installations
Low center of gravity enhances stability
Ideal for indoor test labs with space constraints
Vertical Type
Holder-supported configuration
Reduces footprint for high-voltage applications
Preferred for outdoor installations
Outdoor Design Features
Insulator Options:
Porcelain insulators (traditional)
Composite polymer insulators (lightweight, vandal-resistant)
Weather Protection:
Corrosion-resistant hardware
UV-stable coatings
Sealed bushings
Selection Guidelines
Determine maximum system test voltage
Calculate required capacitance based on test frequency
Choose indoor/outdoor configuration
Select horizontal/vertical orientation based on space
Specify insulator type for outdoor units
Why Our Block Capacitors?
System Protection: Prevents costly damage to test equipment
Flexible Design: Custom voltage/capacitance combinations
Durable Construction: Withstands repeated test cycles
Safety Compliance: Meets international HV standards
Conclusion
Our block capacitors provide essential protection for combined high-voltage test systems, available in configurations up to 3600kV/600nF. Whether for indoor laboratories or outdoor test yards, these components ensure safe operation when switching between AC dielectric, DC withstand, and impulse voltage testing modes.
