Engineered for Extreme Voltage Applications

Designed for critical 50kV systems, the LQHVF combines laboratory-grade precision with field-deployable reliability. The optimized 300pF capacitance enables:

• Ultra-sensitive partial discharge detection (<3pC)

• Accurate voltage measurement with ≤±1% accuracy

• Extended frequency response (DC to 100kHz)

• Minimal circuit loading during measurements

50kV

Technical Specifications

Advanced Modular Design

Corona Rings

Aluminum alloy

Removable design

HV Arm

50kV rated

Quick-disconnect

Ly Arm

Measurement interface

BNC output

Removable Base

Stabilized platform

Leveling feet

Oil-Immersed Construction

High-grade mineral oil with dielectric strength >65kV/mm

Field Benefit: Enhanced arc suppression and thermal stability

Quick-Disconnect System

Tool-free assembly in under 10 minutes

Maintenance Advantage: Component-level servicing

Dual-Function Capabilities

Technical Advantage: 300pF capacitance provides optimal impedance matching for PD detection at 50kV

Voltage Division

Range: 0-50kV

Accuracy: ≤±1% from DC to 50kHz

Phase Error: <0.1° at 50Hz

PD Coupling

Sensitivity: <3pC at 50kV

Bandwidth: 20Hz-100kHz

Signal-to-Noise: 40% better than 1000pF models

Thermal Management System

• ONAN Cooling: Oil Natural Air Natural convection maintains safe operating temperatures

• Thermal Performance: <45°C rise during 60-min full-load operation

• Operating Protocol:

• 60 minutes continuous at 50kV

• Recommended 90-minute cooling period

• Clearance Requirements: Maintain 30cm air space around unit

Compliance & Applications

Standards Compliance: IEC 60270:2000, IEEE 4-2013, EN 60060-1:2010

Critical Applications:

• Testing of 50kV switchgear and GIS

• Partial discharge monitoring in EHV transformers

• High-voltage research laboratories

• Power quality analysis in transmission systems

• Dielectric testing of insulation materials

Operational Protocol

Assembly

1. Secure base to stable surface

2. Connect ly-arm to base

3. Install HV-arm assembly

4. Attach corona rings

Safety Measures

1. Ground base with ≥12mm² cable

2. Maintain 1.5m personnel clearance

3. Verify oil level before energization

Operation

1. Ramp voltage gradually (≤5kV/s)

2. Max 60 minutes at 50kV

3. Monitor temperature rise

Shutdown

1. De-energize system

2. Wait 10 minutes for discharge

3. Disassemble components

Pro Tip: For PD measurements at 50kV, use double-shielded coaxial cables with ferrite cores to minimize RF interference

Why This Instrument?

Extreme Voltage Precision

≤±1% accuracy at 50kV

Unmatched PD Sensitivity

<3pC detection capability

Field Deployable

Modular design for easy transport

Thermal Resilience

ONAN cooling for stable operation