High-Density HV Instrument for Constrained Spaces

Engineered for 50kV systems where space is critical, the LQHVF delivers laboratory-grade performance in a field-deployable cube design. The 1000pF capacitance enables:

• Accurate voltage measurement with ≤±1% accuracy

• Sensitive partial discharge detection (<5pC)

• Harmonic analysis up to 20kHz bandwidth

• Dielectric loss monitoring with <0.5% dissipation

Technical Specifications

L300mm

W300mm

H600mm

Modular Cube Design

Corona Ring

Aluminum alloy

Removable design

Ly Arm

Measurement interface

BNC output

Hy Arm

50kV terminal

Quick-disconnect

Removable Base

Stabilized platform

Leveling feet

Oil-Immersed Construction

Mineral oil dielectric for thermal management

Benefit: 40% better heat dissipation than air-cooled units

Quick-Disconnect System

Tool-free assembly in 8 minutes

Benefit: Rapid deployment in confined spaces

Dual-Function Operation

Voltage Division

Range: 0-50kV

Accuracy: ≤±1% at 50Hz

Output: 50V at 50kV input

PD Coupling

Sensitivity: <5pC at 50kV

Bandwidth: 20Hz-20kHz

Impedance: 80Ω at 2kHz

Space Advantage: The cube design provides 35% better space utilization than cylindrical dividers with equivalent rating, fitting switchgear compartments as small as 350×350×650mm.

Thermal Management

• ONAN Cooling: Oil Natural Air Natural convection

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

• Cooling Requirements: 20cm clearance on all sides

• Operating Cycle: 60 minutes at 50kV followed by 60-minute cooldown

Compliance & Applications

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

Space-Constrained Applications:

• Switchgear compartments in compact substations

• Mobile HV testing laboratories

• Wind turbine nacelle testing

• Underground power distribution systems

• Shipboard electrical systems

Operational Protocol

Assembly

1. Secure base to stable surface

2. Connect Ly-arm to base

3. Install Hy-arm assembly

4. Attach corona ring

Connection

1. Ground base with ≥10mm² cable

2. Connect Ly-arm to voltmeter

3. For PD: Connect Hy-arm to analyzer

Operation

1. Ramp voltage gradually (≤5kV/s)

2. Max 60 minutes at 50kV

3. Ensure 20cm clearance maintained

Shutdown

1. De-energize system

2. Wait 10 minutes for discharge

3. Disassemble components

Pro Tip: In confined spaces, orient the cube with 600mm height vertical to maximize natural convection cooling

Why This Cube Design?

Space Efficiency

Fits compartments as small as 350×350×650mm

Full Capability

50kV performance in compact form

Modular Portability

15kg weight with removable components

Thermal Optimization

ONAN cooling in cube configuration