600kV ~ 800kV Range

LQHVF 800kV/500pF Dual-Stage Capacitive Divider & Coupling Capacitor | Precision HV Measurement

800kV oil-immersed capacitive divider with 3000:1 ratio, <0.2% dielectric loss, and ≤1% accuracy. Features <5pC PD level, ONAN cooling, and modular design for field deployment.

US$ 13,517.00
Lead time: 45 days

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Product Details

Product Tags

LQHVF 800kV/500pF Dual-Stage Capacitive Divider & Coupling Capacitor

Engineered for critical high-voltage applications, this oil-immersed capacitive divider delivers precision measurement and coupling functions in a compact, field-deployable package. With industry-leading <5pC PD performance and 3000:1 ratio accuracy, it's ideal for substation testing and power system diagnostics.

Core Technical Specifications

Parameter	Per Stage	System (2 Stages)
Rated Voltage	400kV	800kV
Frequency	50Hz
Capacitance	800pF	1000pF
Dividing Ratio	3000:1
Measurement Accuracy	≤±1%
Dielectric Loss	<0.2%
Continuous Operation	60 mins @ 800kV
Cooling System	ONAN (Oil Natural Air Natural)
Dimensions	Ø200mm × 7600mm (Corona ring Ø2500mm)
Weight	600kg

Advanced Partial Discharge Performance

100% Rated Voltage

<5pC PD level

Full system measurement

80% Rated Voltage

<3pC PD level

Ultra-sensitive detection

Innovative Structural Design

Modular Oil-Immersed Construction

Corona Rings: Ø2500mm aluminum alloy
LV Arm: Precision signal output
HV Arm: 800kV rated with corona-free design
Removable Base: Tool-free disassembly

Compact Field Deployment

Space-efficient Ø200mm profile
Vertical design: 7600mm height
Optimized for substation access
60% faster setup than conventional dividers

Dual-Function Operation

Precision Voltage Measurement

3000:1 dividing ratio
≤±1% accuracy
Harmonic immunity up to 2% THD

Coupling Capacitor for PD Testing

<5pC sensitivity at 800kV
IEC 60270 compliant
Whole-system measurement capability

Performance Validation

Test	Standard	Result
Thermal Stability	IEC 60502	ΔT <25K @ 60min/800kV
Partial Discharge	IEC 60270	4.2pC @ 800kV (average)
Dielectric Loss	IEC 60247	0.18% @ 50Hz
Mechanical Stability	IEC 60068-2-6	Zero calibration shift

Industry Applications

GIS Commissioning

800kV switchgear testing with <5pC PD sensitivity

Transformer Diagnostics

Dielectric loss measurement at 50Hz

Cable System Validation

Partial discharge mapping on HVDC cables

Research Laboratories

High-precision HV component testing

Field Deployment Advantages

Optimized for Challenging Sites

Compact Footprint: Ø200mm profile fits confined substations
Removable Design: 30-minute assembly by 2 technicians
All-Weather Operation: -30°C to +50°C range
Transport-Friendly: 600kg total weight

Compliance & Certification

IEC 60060-1/2: High-voltage test techniques
IEC 60270: Partial discharge measurements
IEEE 4: Standard for HV testing
IEC 60137: Insulated bushings
IEC 60502: Power cable accessories

Field Operation Tip

For maximum PD sensitivity, conduct baseline measurements at 80% voltage (640kV) where system achieves <3pC detection capability before proceeding to full 800kV tests.

Ordering Information

Package includes: HV/LV arms, removable base, aluminum corona rings (Ø2500mm), calibration certificate, and operation manual. Optional: PD measurement adapter kit, transport cradle, and field calibration set.