Cable Damped Oscillation Wave Condition Monitoring System

The Cable Partial Discharge Shock Wave Testing System is a high-precision device specifically designed to assess the insulation condition of cable main insulation, joints, and terminations. Utilizing DAC (Damped Alternating Current) oscillation technology at a frequency close to power frequency, the system can rapidly locate partial discharge (PD) defects in cables, thereby effectively preventing power outages caused by insulation aging. This system serves as a core tool for cable maintenance and fault diagnosis in power systems.

The Cable Oscillation Wave Partial Discharge Testing System is an integrated partial discharge location system primarily used for the diagnosis of partial discharges in medium-voltage cables. The system tests damped alternating current (DAC) voltages ranging from 20 Hz to several hundred hertz, primarily targeting 10 kV and 35 kV cable systems. It enables precise localization of partial discharge locations. While performing partial discharge detection, the system can also measure the dissipation factor to assess the aging condition of the cable insulation. This allows users to conduct a comprehensive diagnosis of the cable's health status in the shortest possible time.

Power Supply 220 VAC ±10%, 50 Hz

Maximum Oscillation Output Voltage 30 kV

Oscillation Frequency Range 20 Hz to 300 Hz

Test Cable Length Range 200 m to 20 km

High-Voltage Charging Current 5 mA

High-Voltage Switch Triggering Method: Laser-triggered high-voltage switch

High-Voltage Switch Control Turn-on Time: 1 µs

Switch On-Resistance: Less than 1Ω

Fiber Optic Communication

Partial Discharge Measurement Range 1 pC to 100 nC

Partial Discharge Threshold Detection and Bandwidth Compliant with IEC 60270 Standard

Partial Discharge Location Bandwidth 150 kHz to 45 MHz (Automatically Adjusted)

Partial Discharge Location Measurement Accuracy 1% of total cable length (Minimum resolution: 2 m)

Dielectric loss measurement range: 0.1%–10%

Partial discharge real-time sampling rate: 100 MHz

Partial discharge sampling memory depth: 32 MB (capable of recording 300 ms of data)

Control method: Wireless control

Partial discharge calibration mode: Automatic/Manual

Time-domain pulse reflection joint location function in calibration mode: Automatic joint position locking.

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