600kV ~ 800kV Range

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

Dual-stage 800kV capacitive divider with 2000:1 ratio, <0.2% dielectric loss, and ±1% accuracy. Features ONAN cooling, 880kV withstand, and modular design for field testing.

US$ 15,518.00
Lead time: 45 days

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Product Details

Product Tags

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

Engineered for precision high-voltage measurement in critical infrastructure, this dual-stage capacitive divider delivers laboratory-grade accuracy in field environments. With configurable 400kV/800kV operation and industry-leading <0.2% dielectric loss, it's ideal for substation testing and power system commissioning.

Core Technical Specifications

Parameter	Full System	Per Stage
Rated Voltage	800kV	400kV
Configuration	2-stage series connection
Total Capacitance	800pF	-
Stage Capacitance	-	1600pF
Dividing Ratio	2000:1
Measurement Accuracy	≤±1%
Dielectric Loss	< 0.2%
Continuous Operation	60 minutes @ 100% voltage
Insulation Withstand	880kV (110%) for 60 seconds
Cooling System	ONAN (Oil Natural Air Natural)

Advanced Dual-Stage Architecture

Single-Stage Mode

400kV operation
1600pF capacitance
Ideal for transformer testing

Dual-Stage Mode

800kV operation
800pF total capacitance
For GIS and transmission lines

Precision Measurement System

Special lead-wire for variable frequency power sources (30-300Hz)
Scalable corona-free HV connections
Automatic temperature compensation
Harmonic distortion immunity

Structural Advantages

Field-Optimized Design

Removable Aluminum Corona Rings: Detachable for compact transport
Stabilized Pedestal: Ensures level operation on uneven terrain
Modular Assembly: Quick stage connection/disconnection
ONAN Cooling: Maintains oil temperature <55°C at 800kV

Performance Validation

Test	Condition	Result
Dielectric Loss	800kV @ 50Hz	<0.18% (average)
Thermal Stability	60 mins @ 800kV	ΔT <30K
Voltage Withstand	880kV for 60s	No flashover/corona
Ratio Linearity	200-800kV range	±0.8% deviation

Industry Applications

Power Substation Commissioning

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

Transformer Validation

Single-stage 400kV operation for factory acceptance tests

Research & Development

Configurable staging for high-voltage component testing

Compliance & Certifications

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

Includes NIST-traceable calibration and 880kV withstand certification.

Field Operation Tip

When operating in single-stage mode, disconnect and ground unused stage to prevent capacitive coupling interference.

Ordering Information

Package includes: Two capacitor stages, aluminum corona rings, removable pedestal, VF-compatible measuring leads, and calibration documents. Request stage-configuration guide for optimal setup.