High-Voltage Cable Fault Diagnosis

Product Introduction

EDDQ-15Digital High-Voltage Bridge Cable Fault TesterBased onMURRAYBased on the principle of the bridge circuit, it employs a switch-mode power supply to constitute a high-voltage constant current source, with no-load voltage.15000VShort-circuit Current5mAUsed for locating the breakdown points and non-breakdown defects of various wires and cables after laying.

EDDQ-15Digital High-Voltage Bridge Cable Fault TesterThe company has adopted full automation for testing and can automatically calculate and display the fault distance after the user inputs the full length of the cable. Utilizing a color touch LCD screen as both the display and control device, the one-touch operation completely replaces the traditional high-voltage bridge measurement method, offering ease of use, a user-friendly interface, and a combination of text and graphics, ensuring safety and reliability.

The digital bridge and digital megohmmeter have been merged into one, offering enhanced functionality. It can automatically calculate the system's absorption ratio and polarization index, allows for manual setting of test time, and features memory capability to record insulation conditions at different points.

Compared to the B-Reflection Time-Domain Method,EDDQ-15Digital High-Voltage Bridge Cable Fault TesterEspecially suitable for:

1After laying, the cables exhibit high breakdown points, particularly the challenging to achieve low-resistance linear high breakdown points, such as the linear high breakdown at the cable intermediate joints (mainly due to inadequate manufacturing processes of cable joints. Under high voltage application, only leakage through creeping arcs occurs without breakdown discharges).

2The high-voltage bridge balancing method has no test blind spot and is used to determine the breakdown points of short cables and those near the cable ends.

3High-voltage bridge method only requires the uniformity of the resistance of the cable phase conductors for measurement. However, cables with poor traveling wave transmission characteristics, such as those with significant dielectric losses,PVCLow-voltage cables

Product Features

1Operations Made Even Simpler

One-touch operation: automatic zeroing, automatic distance measurement, and one-touch test results. Fewer buttons, easy to operate, and overcomes human error.

Automated Testing: High intelligence level, automatically completes location, and automatically calculates the fault distance based on the test ratio.

Wide insulation range test: Not affected by small current, test insulation resistance can reach150MΩ。

2Advanced technology

Powerful Functionality: Integrates digital bridge and digital megohmmeter functions, automatically calculating absorption ratio and polarization index.

Wireless Isolation Technology: Secure and Reliable Communication Operations

Digital Positioning Technology: Software full control, automatic positioning completed, LCD intuitive display.

Test Emergency Stop Technology: Press the emergency stop button directly during an emergency, and the instrument will immediately reduce the voltage automatically, ensuring safety.

Automatic Pressure Regulation Technology: One-touch operation for automatic pressure regulation and zeroing, intelligent testing.

3High anti-interference performance:

This innovation can prevent test cables from being affected by interference signals from other operating cables, ensuring uninterrupted testing.

4Advanced operational display unit

Color Touch LCD Display: With the adoption of a color touch LCD screen, it offers a more intuitive and user-friendly experience.

Touchscreen Keypad Operation: The touch keypad completely replaces buttons, offering a more advanced and convenient experience.