<1000KV Range
LQHCG 750KV-400pF Three-Stage Multiple Chopping Gap System for Lightning Impulse Testing
Product Highlights
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Ultra-High Voltage Capacity
750kV rated voltage with 400pF capacitance for demanding high-energy applications
⏱️
Precision Timing Control
Digital chopping time setting with <0.15μs standard deviation
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Advanced Three-Stage Design
8 pairs of sphere gaps (4 pairs per stage) for superior waveform control
Technical Specifications
Electrical Parameters
Rated Voltage: 750kV DC/Impulse
Rated Capacitance: 400pF
System Stages: 3 independent stages
Mechanical Configuration
Total Sphere Gaps: 8 pairs (24 units total)
Gap Type: 150mm diameter semi-sphere
Electrode Material: High-grade tungsten alloy
Control System
Trigger Method: Three-electrode discharge
Time-Delay Adjustment: Digital control integrated
Pulse Generation: Electric time-delay circuit
Performance Standards
| Parameter | Specification | Test Standard |
|---|---|---|
| Standard Lightning Chopping Wave | Tc = 2μs, 6μs | IEC 60060-1 |
| Time Deviation | σ < 0.15μs | IEEE Std 4 |
| Waveform Simulation | Artificial line time-delay mechanism | IEC 61083-1 |
Advanced System Features
Multi-Stage Architecture
The three-stage design with 8 pairs of sphere gaps provides exceptional voltage distribution and waveform control. Each stage operates independently for precise timing adjustment.
High-Energy Trigger System
The three-electrode discharge trigger ensures reliable initiation even at maximum voltage ratings, with integrated pulse generation for consistent performance.
Digital Timing Network
Precision digital control of chopping time with artificial line time-delay mechanism produces standard lightning waveforms (2μs and 6μs) with σ < 0.15μs deviation.
Robust Electrode System
150mm diameter semi-sphere gaps made from special alloy provide excellent arc resistance and long service life, even under frequent high-energy discharges.
Typical Applications
High-Voltage Component Testing
Transformer impulse withstand tests
Bushing and insulator evaluations
Circuit breaker performance validation
Research & Development
Lightning protection system development
Dielectric material research
Breakdown phenomena studies
Standards Compliance Testing
IEC 60060-1 impulse tests
IEEE Std 4 compliance verification
National high-voltage standards testing
Operation & Maintenance
Safety Protocols
Always discharge all capacitors before servicing
Maintain minimum safe distances per IEC 61936
Use appropriate PPE including face shields and voltage-rated gloves
Verify ground connections before operation
Recommended Maintenance
| Component | Interval | Action |
|---|---|---|
| Electrodes | Every 50 operations | Inspect for erosion |
| Trigger System | Quarterly | Verify alignment |
| Timing Circuit | Biannually | Calibration check |
| Full System | Annually | Complete verification |
Industry-Leading High-Voltage Solution
The LQHCG 750KV-400pF Three-Stage Multiple Chopping Gap System represents the pinnacle of high-voltage impulse testing technology. With its unique combination of 750kV capability, three-stage architecture, and sub-microsecond timing precision, this system delivers unmatched performance for:
High-power laboratories requiring precise waveform generation
Electrical manufacturers testing ultra-high voltage components
Research institutions studying lightning phenomena
Certification bodies verifying compliance with international standards
For technical specifications, system configuration advice, or application support, contact our engineering team for expert consultation on your high-voltage testing requirements.
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