Electrical Specifications

• Rated Voltage: 400kV RMS

• Partial Discharge Level: <2pC at Un

• Impulse Voltage Rating: 1200kV (Negative polarity)

• Power Supply: 220V/20A, 50/60Hz

• Max. Cable Dimension: 133mm (including insulation)

• Min. HV Insulation Distance: 1900mm

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: 3600×1200mm (L×W)

• Terminal Weight: 400kg (for two sets)

• System Weight: 272kg (without water)

• Terminal Tilt Angle: 35°

• Cable Mounting Height: 1400mm

• Terminal Mounting Height: 3700mm

Advanced Testing Capabilities

• Extra-High Voltage Testing: Continuous 400kV operation

• Lightning Impulse Testing: 1200kV negative polarity

• Precision PD Measurement: <2pC sensitivity at 400kV

• Thermal Stress Testing: 60°C temperature validation

• Pressure Testing: Up to 4 atm pressure conditions

• Large Cable Testing: Accommodates cables up to 133mm diameter

Industrial Applications

• Extra-high voltage cable manufacturing QA

• Transmission system operator cable commissioning

• HVDC interconnection project validation

• Offshore wind farm export cable testing

• Submarine cable system certification

• Power grid infrastructure reliability testing

Safety & Control Systems

• Enhanced Clearance Design: 1900mm minimum insulation distance

• Intelligent Cooling Control: Dual-stage temperature management

• Water Quality Monitoring: Continuous conductivity measurement

• Pressure Safety System: Automatic venting at 4.2 atm

• Thermal Protection: Triple-redundant shutdown at 65°C

• Remote Operation: Isolated control interface with safety interlocks

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 bushings and terminals

2. Weekly Maintenance:

• Test safety interlocks and pressure relief

• Check terminal contact surfaces

3. Monthly Maintenance:

• Calibrate PD measurement system to IEC 60270

• Perform dielectric fluid analysis

• 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 500VDC

5. 5-Year Overhaul:

• Complete disassembly and inspection

• Replacement of all sealing components

• Dielectric fluid replacement

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 in a Field Environment

• 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

• ISO/IEC 17025: Testing and calibration laboratories

Certified for extra-high voltage cable testing in accordance with international electrical standards for transmission-class applications.