600kV ~ 800kV Range

LQHVF 720kV/500pF Precision HV Divider | Ultra-Low PD & 3000:1 Ratio

Precision LQHVF 720kV/500pF capacitor with 3000:1 ratio, ≤1% accuracy, <0.2% dielectric loss, and industry-leading PD performance (<2pC at 288kV).

US$ 13,104.00
Lead time: 45 days

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Product Details

Product Tags

LQHVF 720kV/500pF Capacitive Voltage Divider & Coupling Capacitor

Engineered for the most demanding high-voltage applications, the LQHVF 720kV/500pF system delivers unprecedented partial discharge performance across voltage ranges. With industry-leading PD levels as low as 2pC at 288kV and a precision 3000:1 ratio, this dual-function solution enables laboratory-grade measurement and communication in substation and testing environments.

Technical Specifications

Electrical Parameters

Rated Voltage: 720kV AC
Capacitance: 500pF ±5%
Frequency: 50Hz
Dividing Ratio: 3000:1 nominal

Performance Metrics

Accuracy: ≤±1% full scale
Dielectric Loss: <0.2% @ 20°C
Insulation Withstand: 792kV (110%) for 1min
Cooling System: ONAN (Oil Natural Air Natural)

Industry-Leading Partial Discharge Performance

Voltage Level	Maximum PD	Industry Standard
288kV (40% Un)	<2pC	5-10pC
360kV (50% Un)	<5pC	10-15pC
576kV (80% Un)	<4pC	8-12pC
720kV (100% Un)	<10pC	15-20pC

Advanced Engineering Design

Transport-Optimized System

Quick-release aluminum corona rings
Modular HV arm disassembly
N2-inerted oil preservation (O₂ <0.5%)
Compact shipping configuration

Precision Measurement System

3000:1 high-sensitivity ratio
Low-noise output (SNR >65dB)
Temperature-compensated electronics

Versatile Connection System

Measurement Configurations

Single-stage operation (0-360kV)
Two-stage series connection (0-720kV)
Corona-free HV terminals (RIV <22dB)

Signal Integration

Variable frequency power source compatibility
Low-inductance measuring leads (≤3nH/m)
Scalable connectors for GIS/bushing interfaces

Safety & Compliance

Structural Integrity

Removable seismic-rated pedestal
Interlocking stability mechanism
Zero discharge at 792kV withstand

International Standards

IEC 60060-1: High-voltage testing
IEC 60270: Partial discharge measurement
IEEE 4: Measurement standards
IEC 60358: Coupling capacitors

Industry Applications

Power Transmission

EHV transformer PD diagnostics
Busbar insulation monitoring
Circuit breaker testing

Grid Communication

Substation PLC systems
HVDC filter monitoring
Smart grid sensor networks

Operational Guidelines

Pre-test insulation verification (>10GΩ)
Dual-grounding confirmation (IEC 61936)
ONAN cooling activation 30 min pre-operation
Continuous PD monitoring during tests
Annual dielectric strength validation

Safety Notice: Requires Class E4 PPE per IEC 61482. Minimum clearance: 7 meters for 720kV operations.