400kV ~ 600kV Range

LQHVF 400kV/400pF Precision Divider & Coupling Capacitor | ≤3pC Partial Discharge

Compact 400kV dual-function solution with ≤3pC PD, ±1% accuracy & 440kV withstand. ONAN cooling, 1000:1 ratio. Ideal for space-constrained HV applications.

US$ 7,334.00
Lead time: 30 days

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Product Details

Product Tags

LQHVF 400kV/400pF Capacitive Voltage Divider & Coupling Capacitor

Compact dual-function solution combining precision measurement and coupling capabilities with exceptional partial discharge performance in a space-efficient design.

Space-Optimized Design: Most compact 400kV solution with full dual-function capability and removable components

Technical Specifications

Parameter	Specification	Test Standard
Rated Voltage	400kV	IEC 60060-1
Nominal Capacity	400pF	IEEE 4
Operation Frequency	50Hz	IEC 60076
Partial Discharge @ 400kV	≤5pC	IEC 60270
Partial Discharge @ 300kV	≤3pC	IEC 60270
Dielectric Loss	<0.5%	IEC 60422
Measuring Accuracy	≤±1%	IEEE 112
Dividing Ratio	1000:1	N/A
Temperature Coefficient	5 × 10^-5 %/°C	IEC 60068
Continuous Operation	60 minutes @ 100% rating	IEEE C57.91
Insulation Withstand	440kV for 1min	IEC 60071
Cooling System	ONAN (Oil Natural Air Natural)	IEEE C57.12.00

Dual-Function Capabilities

Precision Voltage Divider

1000:1 nominal dividing ratio
≤±1% measurement accuracy
Exceptional temperature stability

Coupling Capacitor

400pF capacity for power line coupling
50Hz optimized performance
Signal injection for PD monitoring

Modular Design Features

Removable Component System

Corona Rings: Aerospace aluminum alloy
LV Arm: Precision measurement interface
HV Arm: Oil-immersed insulation system
Removable Base: Quick-disconnect stability

Oil-Immersed Technology

Enhanced dielectric strength
Superior thermal distribution
Corrosion protection for components

Performance Advantages

Ultra-Low Partial Discharge

≤5pC at 400kV (100% rated voltage)
≤3pC at 300kV (75% rated voltage)
Industry-leading sensitivity

Thermal Stability

5 × 10^-5 %/°C temperature coefficient
ONAN cooling maintains precision
60-minute continuous operation

Compact Footprint

Space-efficient design
40% smaller than conventional 400kV dividers
Modular components for easy transport

Technical Validation

Test Parameter	Result	Benefit
Temperature Stability	5 × 10^-5 %/°C	Consistent accuracy in varying environments
440kV Withstand	No discharge	Reliable overload protection
Continuous Operation	60 minutes @ 400kV	Extended testing capability
Dielectric Loss	<0.5%	Minimal energy dissipation