600kV ~ 800kV Range

LQHVF 800kV/3500pF High-Voltage Divider | Precision Measurement & PD Testing

800kV capacitive voltage divider with 2000:1 ratio, <0.2% dielectric loss, and ≤2pC partial discharge. Features ONAN cooling, 880kV withstand, and modular design.

US$ 16,973.00
Lead time: 45 days

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Product Details

Product Tags

LQHVF 800kV/3500pF Coupling Capacitor & Capacitive Voltage Divider

Engineered for ultra-high-voltage applications, the LQHVF 800kV capacitive divider delivers laboratory-grade precision in field environments. With dual-unit modular design and industry-leading ≤2pC partial discharge performance, it's ideal for critical infrastructure testing.

Core Technical Specifications

Parameter	Specification	Standard
Rated Voltage	800kV	IEC 60060-1
Configuration	2 units in series	-
Total Capacitance	3500pF	IEC 60358
Single Unit Capacitance	7000pF	IEC 60358
Dividing Ratio	2000:1	-
Measurement Accuracy	±1%	IEC 60060-2
Dielectric Loss	< 0.2%	IEC 60247
Partial Discharge	≤2pC @ 100% voltage	IEC 60270
Insulation Withstand	880kV (110%) for 1 minute	IEEE 4
Cooling System	ONAN (Oil Natural Air Natural)	IEC 60502

Advanced Engineering Features

Modular Series Design

Two 400kV/7000pF units connected in series provide:

Transport-friendly configuration (reduced height/weight)
Individual unit testing capability
Redundancy for critical operations

Corona-Free Operation

Aluminum alloy corona rings optimized for 800kV
Detachable rings for compact transportation
Scalable HV connections for different test configurations

Precision Measurement System

Special lead-wire connects directly to variable frequency power sources for:

Single-stage and two-stage serial voltage measurements
Harmonic distortion < 0.5%
Automatic temperature compensation

Structural Advantages

Optimized Mechanical Design

Removable Pedestal: Provides stability while enabling rapid redeployment
ONAN Cooling: Natural oil convection maintains <55°C at full load
Transport-Optimized: Componentized assembly fits standard HV equipment trailers

Performance Validation Tests

Test	Condition	Result
Partial Discharge	800kV continuous	≤2pC sustained
Dielectric Withstand	880kV for 60 seconds	No flashover/corona
Thermal Stability	Ambient 40°C at 100% load	Oil temp rise <30K
Ratio Accuracy	300-800kV range	±1% linearity

Industry Applications

Substation Commissioning

800kV GIS testing with 2000:1 ratio for precise RMS measurement

Partial Discharge Mapping

≤2pC sensitivity for transformer/cable defect detection

Renewable Energy Grids

HVDC converter station monitoring with VF power source compatibility

Compliance & Certification

IEC 60060-1/2: High-voltage test techniques
IEEE 4: Standard for HV testing
IEC 60270: Partial discharge measurements
IEC 60137: Insulated bushings

All units include NIST-traceable calibration and dielectric loss test certificates.

Field Deployment Tip

For PD measurements above 600kV, maintain relative humidity <70% and use shielded measuring leads to preserve ≤2pC sensitivity.

Ordering Information

Package includes: Two capacitor units, aluminum corona rings, removable pedestal, HV measuring lead-wire kit, and calibration documents. Request factory test reports for 880kV withstand validation.