Key Electrical Specifications

• Rated Voltage: 300kV RMS

• Partial Discharge Level: <1pC at Un

• Impulse Voltage Rating: 900kV (Negative polarity)

• Power Supply: 220V/20A, 50/60Hz

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

• Min. HV Insulation Distance: 1600mm

Enhanced 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: 3000×1200mm (L×W)

• Terminal Weight: 350kg (for two sets)

• System Weight: 272kg (without water)

• Terminal Tilt Angle: 35°

• Cable Mounting Height: 1000mm

• Terminal Mounting Height: 2800mm

Advanced Testing Capabilities

• Ultra-High Voltage PD Testing: <1pC sensitivity at 300kV

• Lightning Impulse Testing: Up to 900kV negative polarity

• Extended HV Withstand Testing: Continuous 300kV operation

• Thermal Stress Testing: 60°C temperature validation

• Pressure Testing: Up to 4 atm pressure conditions

• Cable Integrity Testing: For cables up to 133mm diameter

Industrial Applications

• EHV cable manufacturing quality assurance

• Utility transmission cable commissioning

• Offshore wind farm interconnection testing

• HVDC cable system validation

• Submarine cable certification

• Power grid infrastructure testing

Operation & Safety Systems

• Dual-Stage Cooling Control: Precision temperature management

• Water Quality Monitoring: Real-time conductivity measurement

• Pressure Safety System: Automatic venting at 4.2 atm

• Thermal Protection: Dual-sensor shutdown at 65°C

• Insulation Monitoring: Ensures minimum 1600mm clearance

• Remote Operation: Control via isolated interface

Installation Requirements

Maintenance Protocol

1. Pre-Test Checks:

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

• Confirm cooling flow rate ≥45 l/min

• Inspect termination interfaces

2. Weekly Maintenance:

• Check safety interlocks

• Test pressure relief valves

3. Monthly Maintenance:

• Calibrate PD measurement system

• Perform dielectric fluid analysis

• HV bushing inspection

4. Annual Certification:

• Full HV calibration to IEC 60270

Pressure vessel recertification

• Cooling system performance validation

• Insulation resistance testing

Compliance & Standards

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

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

• IEEE 400.2: Guide for field testing of shielded power cable systems using very low frequency

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

• IEC 60060: High-voltage test techniques

• ISO/IEC 17025: Testing and calibration laboratories

Certified for ultra-high voltage cable testing in accordance with international electrical standards.