>800kV Range
LQHVF 1500kV/1000pF High-Voltage Coupling Capacitor & Voltage Divider
Engineered for precision measurements in extra-high-voltage (EHV) systems, the LQHVF series combines IEC-compliant safety with cutting-edge capacitive division technology. Designed for 60Hz power networks, it delivers laboratory-grade accuracy in field applications.
Core Technical Specifications
| Parameter | Specification | Industry Significance |
|---|---|---|
| Rated Voltage | 1500kV | Highest commercial transmission voltage coverage |
| Capacitance | 1000pF ±5% | Optimal signal-to-noise ratio for measurement |
| Dividing Ratio | 2000:1 | Enables safe low-voltage measurement outputs |
| Accuracy | ≤±1% | Exceeds IEEE 4-2013 Class I requirements |
| Partial Discharge | ≤2pC @ 100% voltage | Critical for insulation integrity monitoring |
| Dielectric Loss | <0.3% | Industry-leading energy efficiency |
| Insulation Test | 110% rated voltage for 1min | Validates structural integrity per IEC 60060 |
Advanced Engineering Features
ONAN Cooling System
Oil-Natural Air-Natural cooling ensures thermal stability during continuous operation at maximum loadCorona-Free Design
Aerospace-grade aluminum corona rings eliminate partial discharge risks above 800kVModular Pedestal System
Removable base with anti-vibration stability for field deploymentScalable HV corona-free connectors
Supports single-stage and two-stage serial configurations
Measurement Flexibility
Dedicated lead-wire interface to variable frequency power sources (40-70Hz range)
Industrial Applications
Power Transmission Monitoring
Real-time voltage measurement in 765kV+ substations with transient response <5μs
HV Equipment Testing
Partial discharge detection during transformer/reactor factory acceptance tests (FAT)
Research Laboratories
Precision impulse measurement for lightning studies up to 1.2/50μs waveforms
Compliance & Safety
Validated per IEC 61869-1:2020 (Instrument Transformers)
Dielectric testing compliant with IEC 60270:2000
Double-shielded measuring leads prevent EMI interference
Built-in overvoltage lockout at 115% rated voltage
Operational Recommendations
Maintain ambient temperature <40°C for optimal dielectric performance
Annual recalibration using NIST-traceable reference dividers
Transport in vibration-absorbing cases (included)
Verify grounding continuity before energization
Industry Impact: The LQHVF series reduces measurement uncertainty by up to 68% compared to conventional dividers, enabling smarter grid protection decisions and predictive maintenance in ultra-high-voltage infrastructure.
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