Portable Multi-pulse Cable Fault Pre-locator Precise Time Domain Reflectometer

Product Specification

Introduction

XHGG502 ARC Cable Fault Pre Locator is a special instrument for measuring and analyzing power cable status and fault distance. It combines modern electronic technology and computer technology to realize signal filtering, acquisition, data processing, graphic display and graphic analysis to complete cable speed measurement, cable Length test, cable fault distance test.

This cable fault locator adopts 12.1-inch industrial-grade computer control, windows operating system, touch operation mode, ultra-high brightness, large LCD screen display interface for user-friendly use, automatic continuous sampling, and real-time accurate waveform acquisition.

The XHGG502 ARC cable fault pre locator adopts the latest technology of embedded industrial computer and the most advanced "eight pulse method" (multiple pulse method) testing technology, so that any high-resistance fault presents the simplest short-circuit fault waveform similar to low-voltage pulse Features are easy to read. It also has the operation modes of shock high voltage flashover method and low voltage pulse method, which is convenient to detect various cable faults. The success rate of fault detection, test accuracy and test convenience are better than any domestic testing equipment.

Main features

• The reflected signal sent by the pulse coupler is automatically displayed, and the full-length waveform of the cable open circuit is displayed at the same time.

• Automatic calculation and display of fault distance;

• It has the function of storing massive test waveforms: the waveforms obtained from the field test can be conveniently stored in the instrument according to the specified order, and can be recalled and observed at any time;

• With standard printer USB interface;

• Simple operation and high reliability. Has a very high cost performance;

• Built-in polymer lithium battery power supply, which can test cable open circuit and low resistance short circuit fault in no power supply environment.

The test working modes of XHGG502 ARC cable fault pre locator include low voltage pulse method, high voltage flashover method, and multiple pulse method. Here focus on the multiple pulse method that is different from other devices.

The purpose of using the multiple pulse method to test the cable fault is to make the sent low-voltage test pulse effectively avoid the cosine large oscillation interference that occurs at the moment of the high-voltage impact of the faulty cable, and obtain a standard and clear similar short-circuit during the relatively stable short-circuit arc at the fault point. The echo of the fault, and there is a large choice of ideal test waveforms.

Different impulse high voltages, different cable lengths, different cable fault distances, and the period and duration of large cosine oscillations are very different. The waveform collected by the simple secondary pulse method is often disturbed by the large cosine oscillation due to insufficient transmission delay time, and the waveform is chaotic and difficult to analyze. It can only be ensured by adjusting the delayed launch time of the test pulse or using a medium-voltage arc-extending device, which increases the difficulty of operation and the weight and cost of the equipment. The multiple pulse method just overcomes these difficulties and greatly simplifies the testing procedures. Eight sets of test waveforms are obtained from the high-voltage flashover process of one impact, and there are always several sets of waveforms that are convenient for fault distance interpretation. This is also the advantage of the multiple pulse method compared with the second pulse method.

Operation system show

High voltage flash-over method waveform analysis

   Mulit pulse method(ARC)waveform analysis

Technical Data

On site pictures:

Packing list