Precision Measurement for Extreme Voltage Applications

The LQHVF1000kV/500pF sets new standards in high-voltage measurement with industry-leading ≤2pC partial discharge performance and thermal-stable ONAN cooling. Engineered for laboratory and field applications, this dual-function device delivers laboratory-grade accuracy in critical power transmission testing environments.

Technical Specifications

Engineering Innovations

Modular Removable Design

Field-configurable components:

• Detachable aluminum corona rings

• Interchangeable LV/HV arms

• Portable base with stability optimization

Advanced Partial Discharge Control

Ultra-low PD characteristics:

• ≤5pC at 1000kV (full rating)

• ≤2pC at 700kV (70% rating)

• Verified with reference transformers

Thermal Management System

ONAN cooling ensures:

• Temperature coefficient: 5×10^-5 %/°C

• Stable operation at full load for 60 minutes

• Natural convection without auxiliary power

Oil-Immersed Construction

Enhances performance through:

• Superior dielectric strength

• Reduced corona effect

• Environmental protection (IP55 equivalent)

Performance Comparison

Certifications & Compliance

• IEC 61869-11 (Instrument Transformers)

• IEC 60060-1 (High-voltage test techniques)

• IEEE 4-2013 (Standard for HV Testing)

• EN 50191 (Test Facility Safety)

• CE/UKCA Certified

Global Application Scenarios

High-Power Laboratories

Reference standard for calibrating 800kV+ test systems with NIST-traceable accuracy

Transmission Substations

Online voltage monitoring in ultra-high-voltage (UHV) corridors up to 1100kV

Research Facilities

Dielectric response testing of nano-enhanced insulation materials

Manufacturing QA

Type testing of power transformers and GIS components per IEC 62271