Technical Specifications

Engineering Excellence Features

❖ Advanced Corona Control

Precision-engineered aluminum alloy corona rings ensure:

• Partial discharge <5pC at 600kV operation

• Modular design for compact transportation

• Corona-free HV connections

❖ Thermal Management System

ONAN cooling technology delivers:

• Continuous 1-hour operation at 600kV

• Temperature stability within 45°C rise

• IEC 60296 compliant insulating oil

❖ Modular & Scalable Design

• Removable stability pedestal with seismic rating

• Special measuring lead-wire for VF sources (30-300Hz)

• Supports single and two-stage serial configurations

Certifications & Safety Compliance

International Standards

• IEC 60060-1/2: High-voltage test techniques

• IEC 60270: Partial discharge measurements

• IEEE 4: Standard for HV testing

• ANSI C92.2: Capacitive voltage dividers

Safety Systems

• Overvoltage automatic disconnect (660kV threshold)

• Pressure-relief diaphragm for dielectric protection

• Dual-point temperature monitoring

Industrial Applications

Power Transmission Systems

Precision measurement on 500kV+ transmission networks with IEEE C57.12.90 compliance

High-Power Test Labs

Extended test cycles at 600kV for transformer and breaker certification

Partial Discharge Research

Ultra-sensitive detection for GIS and cable systems with <2pC resolution

Technical FAQs

What calibration certificates are provided?

Each unit includes NIST-traceable calibration certificates for:

• Dividing ratio accuracy (±0.5%)

• Partial discharge sensitivity

• Temperature-rise validation

Can this system measure impulse voltages?

Designed for 50Hz AC applications. For impulse testing (1.2/50μs), we recommend our LQHVF-IMP series with 1000kV BIL rating.

What is the recommended maintenance schedule?

Based on IEC 61462:

• Dielectric oil testing: Annually

• Full calibration: Every 2 years

• Corona ring inspection: After transport