400kV ~ 600kV Range

LQHVF 520kV/3000pF Dual-Function HV System | 20-300Hz Range & Configurable Stages

Advanced 520kV coupling capacitor & voltage divider with 20-300Hz frequency range, configurable stages (260kV/6000pF or 520kV/3000pF), ≤1% ratio error & 1.5% accuracy.

US$ 12,060.00
Lead time: 30days

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Product Details

Product Tags

LQHVF 520kV/3000pF Dual-Function Coupling Capacitor & Voltage Divider

Advanced configurable solution offering exceptional 20-300Hz frequency range with dual-stage operation for diverse high-voltage testing requirements.

Ultra-Wide Frequency: Broadest 20-300Hz operation at 520kV - ideal for SFRA, resonant testing, and harmonic analysis

Technical Specifications

Parameter	Single Stage	Two-Stage Serial	Test Standard
Rated Voltage	260kV	520kV	IEC 60060-1
Rated Capacity	6000pF	3000pF	IEEE 4
Frequency Range	20Hz - 300Hz		IEC 60076-18
Voltage Ratio Error	≤1% (effective value)		IEC 61869-5
Dielectric Loss	<0.5%		IEC 60422
Measuring Accuracy	≤1.5%		IEEE 112
Dividing Ratio	6000:1		N/A
Continuous Operation	60 minutes @ 100% rating		IEEE C57.91
Insulation Withstand	572kV (110% rated) for 60s		IEC 60071
Cooling System	ONAN (Oil Natural Air Natural)		IEEE C57.12.00

Configurable Operation Modes

Single-Stage Operation

260kV maximum voltage
6000pF capacity
Ideal for medium-voltage equipment testing

Two-Stage Serial Operation

520kV maximum voltage
3000pF capacity
Full 20-300Hz frequency capability

Rapid Reconfiguration

Field-switchable in 15 minutes
Maintains calibration in both modes
No specialized tools required

Advanced Performance Features

Ultra-Wide Frequency Range

20-300Hz operation (15:1 ratio)
Stable performance at low frequencies
Ideal for transformer SFRA testing

Precision Ratio Accuracy

≤1% voltage ratio error
6000:1 nominal dividing ratio
High-resolution measurement

Robust Insulation System

572kV withstand capability
ONAN cooling maintains stability
<0.5% dielectric loss

Dual-Function Capabilities

Coupling Capacitor Function

3000pF capacity (serial configuration)
20-300Hz signal injection capability
Power line carrier communication

Precision Voltage Measurement

6000:1 dividing ratio
Special lead-wire to VF sources
Scalable HV connections

Simultaneous operation supported for integrated monitoring systems

Frequency Performance Validation

Frequency	Voltage Ratio Error	Measuring Accuracy
20Hz	≤0.95%	≤1.45%
50/60Hz	≤0.85%	≤1.25%
150Hz	≤0.92%	≤1.35%
300Hz	≤0.98%	≤1.48%

Tested at 520kV in two-stage configuration per IEEE 4 standards

Transport-Optimized Design

Modular Corona System

Aerospace-grade aluminum corona rings
Quick-disconnect segments
Corona-free HV connections

Removable Stability Pedestal

Engineered for seismic stability
Tool-free assembly/disassembly
Integrated measurement ports

Field-Deployment Ready

Rapid reconfiguration capability
All accessories fit in single transport case
On-site calibration maintenance

Industry Applications

Transformer SFRA Testing

Full 20-300Hz range for sweep frequency response analysis

Variable Frequency Resonant Testing

Precision measurement in resonant circuits

High-Voltage Research

Configurable stages for experimental setups

Field Commissioning

Transportable solution for on-site acceptance testing

Compliance & Certifications

IEC 60060-1: High-voltage test techniques
IEEE 4: Standard for HV testing
IEC 60270: Partial discharge measurements
IEC 61869-11: Coupling capacitors
IEC 60076-18: Frequency response testing
CE, RoHS, and UKCA certified

Safety Compliance: Meets IEEE 516-2022 safety requirements for 520kV installations