Dual-Stage High Voltage Design

Engineered for 700kV impulse testing, this voltage divider utilizes two series-connected 350kV/800pF capacitor stages with advanced weak damping technology:

• Series-Connected Stages: 2×350kV/800pF units for 700kV operation

• Multistage Damping: Precisely distributed resistors for clean waveform capture

• Non-Inductive Architecture: Parallel low-voltage arm capacitors eliminate measurement distortion

• Optimized Capacitance: 400pF total HV arm rating balances sensitivity and load

Mobile Test Platform

Heavy-Duty Construction

The reinforced metal base with polyurethane wheels provides both mobility and stability:

• Industrial-Grade Frame: Supports 700kV mechanical stresses

• Polyurethane Wheel System: 4-wheel design with fixed brace for test stability

• Field-Assembled Electrode: Stainless steel top section for transport safety

Corona Control System

• Optimized Corona Covers: Specially profiled for 0.7MV impulse waves

• Stainless Steel Construction: Durable discharge protection

• Modular Design: Top electrode installs on-site for transportation

Technical Specifications

Performance Features

1. High-Speed Measurement: ≤150ns response captures full lightning wave characteristics

2. Precision Scaling: 1000:1 ratio with ≤±1% uncertainty

3. Transport Optimized: 700kV capability in field-deployable package

4. Superior Corona Control: Specialized covers prevent 0.7MV flashovers

Standards Compliance

• GB311: High-voltage test equipment requirements

• IEC 60060-1: High-voltage test techniques

• Full square wave response compliance

Typical Applications

Power Transmission

• 700kV transformer impulse tests

• GIS system commissioning

Research & Development

• High-voltage component validation

• Dielectric material studies

Field Testing

• Substation equipment verification

• Lightning protection system tests

Operation & Maintenance

• Assembly: Install top electrode per field manual before testing

• Clearance: Maintain 4m minimum radius during 700kV tests

• Inspection: Monthly check of polyurethane wheels and braces

• Calibration: Quarterly verification of capacitance values

• Storage: Keep corona covers in protective cases when disassembled