Cable Oscillating Wave Partial Discharge Tester

Product Overview

The Oscillating Wave Test System (also known as Damped Alternating Current, abbreviated as OWTS or DAC) is a specialized device designed for diagnosing the insulation condition of medium and high voltage power cables. By generating high-frequency damped oscillating waves, the system stimulates partial discharge (PD) at cable defect locations, enabling PD measurement and defect localization.

The DAC system supports both AC withstand testing and diagnostic measurements (including partial discharge and dielectric loss factor), providing reliable detection for common cable issues such as:

1. Poor installation practices.
2. Defects caused by improper cable laying.
3. Defects within cable joints and terminations.
4. Insulation aging and degradation of the cable body.

Features

Non-Destructive Testing

• Traditional withstand voltage tests apply multiple times the operating voltage, which can damage the cable insulation. The oscillating wave test applies a controlled voltage peak (≤30 kV) with a short application duration (≤100 ms), minimizing the risk of secondary insulation damage.
• Capable of measuring Partial Discharge Inception Voltage (PDIV) and Partial Discharge Extinction Voltage (PDEV) to assess defect activation thresholds.

Multi-Function Integration

• Partial Discharge Detection: Range from 5 pC to 100 nC, compliant with IEC 60270 standards.
• Dielectric Loss Measurement: From 0.1% to 10%, indicating insulation aging.
• Capacitance Measurement: Range 0.025–4 μF, assisting in cable condition assessment.

Anti-Interference & Intelligent Analysis

1. Auto bandwidth adjustment to filter environmental noise.
2. Supports expert database for intelligent defect analysis, identifying types such as poor installation, joint defects, and insulation aging.

Technical Parameters