Electrical Specifications

• Rated Voltage: 700kV RMS

• Partial Discharge Level: <2pC at Un

• Impulse Voltage Rating: 1650kV (Negative polarity)

• Power Supply: 220V/20A, 50/60Hz

• Max. Cable Dimension: 160mm (including insulation)

• Min. HV Insulation Distance: 3300mm

Cooling System Specifications

Environmental Specifications

• Ambient Temperature Range: 3°C to 35°C

• Max. Cooling Water Temperature: 20°C

Physical Dimensions & Configuration

• Main Unit Dimensions: 1200×1400×1700mm (L×W×H)

• Base Dimensions: 5800×1400mm (L×W)

• Terminal Weight: 650kg (for two sets)

• System Weight: 272kg (without water)

• Terminal Tilt Angle: 45°

• Cable Mounting Height: 1600mm

• Terminal Mounting Height: 5500mm

Advanced Testing Capabilities

• Ultra-High Voltage Testing: Continuous 700kV operation

• Lightning Impulse Testing: 1650kV negative polarity

• Precision PD Measurement: <2pC sensitivity at 700kV

• Thermal Stress Testing: 60°C temperature validation

• Pressure Testing: Up to 4 atm pressure conditions

• Large Cable Testing: Accommodates cables up to 160mm diameter

• Extended Duration Testing: Sustained operation capability

Industrial Applications

• Ultra-high voltage cable manufacturing QA

• National grid transmission system testing

• HVDC project validation and commissioning

• Offshore wind farm export cable certification

• Submarine power link qualification

• Power infrastructure reliability testing

• Research institutions high-voltage labs

• Nuclear power plant cable system validation

Safety & Control Systems

• Extended Clearance Design: 3300mm minimum insulation distance

• Intelligent Cooling Control: Adaptive temperature management

• Water Quality Monitoring: Continuous conductivity measurement

• Pressure Safety System: Dual-stage venting at 4.1 atm and 4.2 atm

• Thermal Protection: Quad-redundant shutdown at 62°C

• Remote Operation: Fiber-optic control interface with safety interlocks

• Ground Potential Monitoring: Continuous earth resistance verification

• Atmospheric Monitoring: Humidity and contamination sensors

Installation Requirements

Maintenance Protocol

1. Pre-Test Checks:

• Verify water conductivity (0.1-2 μS/cm)

• Confirm cooling flow rate ≥45 l/min

• Inspect HV terminals for contamination

• Check atmospheric conditions

2. Weekly Maintenance:

• Test all safety interlocks

• Verify pressure relief valve operation

• Check terminal contact resistance

• Calibrate environmental sensors

3. Monthly Maintenance:

• Calibrate PD measurement system to IEC 60270

• Perform dielectric fluid analysis

• Thermal imaging of HV connections

• HV bushing partial discharge scan

4. Annual Certification:

• Full HV calibration to IEC 60060 standards

• Pressure vessel recertification

• Cooling system performance validation

• Insulation resistance testing at 2000VDC

5. Biennial Comprehensive Overhaul:

• Complete disassembly and inspection

• Replacement of all sealing components

• Dielectric fluid replacement and filtration

• Terminal contact refurbishment

Compliance & Standards

• IEC 60270: High-voltage test techniques - Partial discharge measurements

• IEC 60885-3: Electrical test methods for electric cables

• IEEE 400.3: Guide for Partial Discharge Testing of Shielded Power Cable Systems

• IEC 62067: Power cables with extruded insulation for rated voltages above 150 kV up to 500 kV

• IEC 60060-1: High-voltage test techniques - General definitions and test requirements

• IEC 60060-2: High-voltage test techniques - Measuring systems

• IEC 60060-3: Guidelines for high-voltage testing

• ISO/IEC 17025: Testing and calibration laboratories

• CIGRE TB 496: Recommendations for Testing DC Extruded Cable Systems

• CIGRE TB 722: Testing of HV and EHV AC Extruded Cable Systems

• CIGRE TB 783: Recommendations for Testing Long Length HV and EHV AC Cables

Certified for ultra-high voltage cable testing in accordance with international standards for transmission-class applications up to 700kV.