ZS-A20 Intelligent Cable Fault Tester

 

Overview

ZS-A20 cable fault tester uses industrial embedded computer platform system and network services and USB communication technology, which eliminated the limitations of original cable fault tester and significantly improved the function and value of the instrument. It also provides a unique data manage software for the growing number of buried cables. The entire system meets the general technical requirement of electrical test equipments in PRC power industry standard "DL/T849.1 ~ DL/T849.3-2004". It consists of three parts of mainframe, fault locater and cable line tester. This testing system is used in all kinds of cable fault test, cable line and buried depth measurement and cable test records management, as well as accurate test of cable open circuit and short circuit of coaxial communication cables and local telephone cables.

 

Main properties

First application of industrial embedded computer platform system; combined the fault test and path finding test into one, which is convenient to use. Lithium-powered, light weight, easy to carry. First usage of 12.1-inch touch screen in China, XP computer operating platform and integrated software, and fitted with cable fault testing software and cable data management software.
Using the latest USB communication interface; signal collecting is stable; the host can automatically selects the sampling frequency, up to five frequency in choose with minimum of 6.25MHz and maximum of 100MHz, both help improve the precision of test and to meet the test requirements of different lengths of cable.

Software fault auto search, distance display automatically, double cursor can be accurate to 0.15 meters, which improved the test accuracy.

Powerful waveform handling function and network services function. Testing waveforms can be arbitrarily compressed, expanded, and the screen randomly displays two waveforms close to the standard for you to compare and analysis, thus reduce errors.

Equipped with a wireless network card, it enables wireless internet technology function at any time and any place. Provide accurate, timely waveform analysis and professional guidance to users.

40G memory; various types of on-site waveform and on-site wiring diagrams; cable data management software can do perfect file management, and provide help for cable maintenance and accurate location.

The key part of the instrument, the locator, imitates the Germany technology that can directly display the distance between the point of failure and tester, is a strong guarantee for quickly and accurately locating of cable fault and reducing power loss.

The newly developed intelligent modular sampler, replacing the cumbersome field wiring, features intuitive waveform, easy analyzing, complete isolation with high voltage and absolute security for the host and the operator.

 

Instrumental Specification

Test Specifications:

Test for various cable failures in different voltage levels, different sections, different media and materials, including open circuit, short circuit, low and high resistance leakage, high resistance flashover and so on.

Measure the speed of radio wave propagation in any cables with length known.

Test the cable trend and its laying depth.

Test distance: no less than 40km

Shortest test distance (blind area): 5-10 meters

Precise locate error: ± 0.2m

Test error: The system error is less than ± 1%

Resolution: V/50m; V is the wave velocity m/μs; software cursor is 0.15 m.

Instrument sampling frequency: 6.25MHz, 12.5MHz, 25MHz, 50MHz, 100MHz, (adaptive pulse width)
Power supply and Power Waste: AC 220V ± 10% less than 10W   

DC 12V (7AH) less than 20W

Management: Distribution map of the cable laying path. Detailed file information of all cables in managing area: including cable distribution, number, start position, laying depth and time, cable media, joint position, maintenance records, failure causes, test report, cable test records and other information.
Signal frequency: 15kHz sine wave    

Output power: Pomax ≥ 100W

Output impedance: Zo = Zc (cable properties of resistivity)     

Oscillation mode: intermittent

Environmental Temperature: -10 ℃ ~ +40 ℃

Dimensions: 180mm × 300mm × 400mm         

Relative humidity: RH ≤ 85% (25 ℃)