<1000kV Range
LQHID 800KV-300pF Weak Damping Capacitor Voltage Divider – Technical Specifications & Features
The LQHID 800KV-300pF Weak Damping Capacitor Voltage Divider is a precision instrument designed for high-voltage impulse testing, ensuring accurate measurements in power transmission, substation testing, and industrial applications. This article details its key features, technical specifications, and compliance with international standards.
Design and Construction
Multi-Stage Capacitor Structure: Composed of series-connected pulse capacitors for high-voltage division.
Distributed Damping Resistors: Minimizes waveform distortion for precise impulse measurements.
Non-Inductive Capacitors: Low-inductance design in both high-voltage and low-voltage arms ensures signal integrity.
Movable Metal Base: High-strength frame with polyurethane wheels for stability and mobility.
Top Electrode Protection: Prevents flashover during switching impulse tests.
Corona Cover: Stainless steel electrode with optimized profile to suppress corona discharge at 800kV.
Technical Specifications
Parameter | Value |
---|---|
High Voltage Rating | 800kV (2 stages × 400kV) |
Capacitance (HV Arm) | 400pF (total), 800pF per stage |
Standard Lightning Wave | +800kV |
Partial Response Time (Ta) | ≤100ns |
Overshoot (B) | ≤20% |
Scale Factor Uncertainty (Kg) | ≤±1% |
Voltage Ratio | 3000:1 |
Compliance Standard | GB311 (Square Wave Response) |
Key Applications
High-Voltage Impulse Testing: Lightning and switching surge tests in power systems.
Transformer & Substation Testing: Ensures insulation integrity under transient conditions.
Research & Development: Used in labs for high-voltage waveform analysis.
Renewable Energy Systems: Validates surge protection in wind/solar farms.
Safety & Transportation
Modular Top Electrode: Field-installed stainless steel design for easy transport.
Sturdy Base: Reinforced frame with locking braces for stability during operation.
Corona Suppression: Optimized geometry to prevent discharge at peak voltages.
Conclusion
The LQHID 800KV-300pF Weak Damping Capacitor Voltage Divider is engineered for precision and reliability in high-voltage testing. With distributed damping, low-inductance capacitors, and GB311 compliance, it is ideal for utilities, manufacturers, and research institutions requiring accurate impulse measurements.