Space-Efficient Dual-Function Solution

The LQHVF 270kV/500pF redefines compact high-voltage technology by combining precision voltage measurement and power line coupling in a single oil-immersed unit. With its industry-leading <5pC PD and ≤1% accuracy, this innovative solution delivers:

• Dual functionality in 30% less space than separate units

• Laboratory-grade measurement at 270kV

• Ultra-clean signal coupling for protection systems

• 60-minute continuous operation at full rating

φ600mm × 2100mm

Compact footprint for confined substations

Technical Specifications

Dual-Function Capabilities

As Voltage Divider

• Precision measurement of transmission voltages

• Dielectric withstand testing up to 270kV

• Harmonic analysis at 50Hz fundamental

• Protective relay calibration

As Coupling Capacitor

• Power line carrier (PLC) communication

• Protection signaling for distance relays

• SCADA data transmission

• Transient fault recording

Compact Design Features

Oil-Immersed Construction

High-grade mineral oil insulation provides superior dielectric strength in compact dimensions.

Integrated Corona Rings

Aerospace-grade aluminum alloy rings prevent discharge without increasing footprint.

Modular Arm System

Removable LV/HV arms enable reconfiguration in confined spaces.

Optimized Base

Stabilized removable pedestal with 600mm diameter footprint.

Space-Saving Applications

Compact GIS Substations

Ideal for gas-insulated switchgear installations where space is premium.

Urban Transmission Stations

Enables EHV measurement and communication in dense urban infrastructure.

Operational Advantages

• Space Efficiency: 30% smaller than conventional solutions

• Lightweight: <120kg for easier installation

• Ultra-Low PD: <5pC ensures signal integrity

• Thermal Stability: ONAN cooling maintains accuracy

"The compact design allowed installation in our city-center substation where conventional units wouldn't fit - saving $250,000 in structural modifications."
               - Substation Engineer, Urban Utility

Installation Protocol

1. Site Preparation: Minimum 1.5m diameter space

2. Assembly: Secure LV/HV arms to base unit

3. Grounding: Connect 25mm² cables to station grid

4. Connection:

• Measurement: Connect to test set

• Coupling: Terminate to PLC transmitter

5. Safety: Maintain 4m clearance during operation

6. Operation: Max 60 minutes continuous at 270kV

Compliance & Standards

Certified to international standards:

• IEC 60358-1: Coupling capacitors & capacitor dividers

• IEEE C57.13: Instrument transformer requirements

• IEC 60270: Partial discharge measurements

• IEC 62271-203: Gas-insulated switchgear

Third-party verified for compact space applications.