400kV ~ 600kV Range
LQHVF 600kV/2000pF Multi-Stage Capacitive Voltage Divider: Flexible Resonant Testing Solution
Configurable High-Voltage Measurement System
The LQHVF 600kV/2000pF Capacitive Voltage Divider delivers unprecedented flexibility for high-voltage testing across 50-300Hz frequencies. With its innovative three-stage modular design, this resonant capacitor supports three operational configurations: 200kV (single stage), 400kV (two-stage series), and 600kV (three-stage series) – all within a single integrated system.
Technical Specifications
| Parameter | Specification | Compliance |
|---|---|---|
| Rated Voltage (3-stage) | 600kV AC | IEC 60060-1 |
| Rated Voltage (2-stage) | 400kV AC | |
| Rated Voltage (1-stage) | 200kV AC | |
| Frequency Range | 50Hz - 300Hz | IEEE 4 |
| Capacitance (3-stage) | 2000pF ±10% | IEC 60137 |
| Capacitance (2-stage) | 3000pF ±10% | |
| Capacitance (1-stage) | 6000pF ±10% | |
| Voltage Ratio | 7000:1 | IEC 61869-11 |
| Dielectric Loss | ≤0.2% @ 20°C | IEC 60247 |
| Measuring Accuracy | ≤1% | IEC 60060-2 |
| Continuous Operation | 60 minutes @ rated voltage | ANSI C57.12.90 |
| Insulation Withstand | 660kV (110%) for 1 minute | IEC 60071-2 |
Multi-Stage Configuration Options
1-Stage 200kV Operation
Capacitance: 6000pF
Ideal for: Transformer impulse testing, medium-voltage switchgear
2-Stage Series 400kV Operation
Capacitance: 3000pF
Ideal for: Cable fault location, GIS partial discharge testing
3-Stage Series 600kV Operation
Capacitance: 2000pF
Ideal for: HVDC converter testing, transmission line resonant verification
Advanced Design Features
Frequency-Adaptive Measurement
Maintains ≤1% accuracy across 50-300Hz range via specialized lead-wire system to variable frequency power sources.
Aluminum Corona Rings
Lightweight alloy rings enable compact transport while eliminating corona discharge up to 660kV.
Removable Stabilizing Pedestal
Engineered base with quick-disconnect mechanism ensures stability during field deployment.
Corona-Free HV Connections
Scalable connectors prevent RF interference during sensitive PD measurements.
ONAN Cooling System
Oil-Natural Air-Natural thermal management maintains stable operation during 60-minute full-load tests.
Resonant Testing Applications
Variable Frequency Resonant Test Systems
Precise voltage measurement in cable withstand testing (30-300Hz)
Gas-Insulated Substation Commissioning
Partial discharge detection during 50-250Hz frequency sweeps
Rotating Machine Testing
Stator winding tests at industrial frequencies (50/60Hz) and harmonics
Safety & Compliance
Clearance distances: IEEE 1308-2020
Dielectric testing: IEC 60060-1/-2
Partial discharge: IEC 60270 Class II
Environmental rating: IP65 (outdoor operation)
Safety certifications: UL 61010-1, CE, RoHS
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