cable fault location Archive - WGM

Cable location | vLoc3 | Cable measurement

vLoc3 line locator series consists of 7 different features and functions: vLoc3-Pro, vLoc3-5000, vLoc3-Cam, vLoc3-9800, vLoc3-ML, vLoc3-RTX-Pro and vLoc3-DM. The vLoc3 series line locator receivers are, in short, the perfect measurement devices for locating underground networks.

vLoc3-Pro is a locating system for locating underground lines and cables. It enables 3-dimensional line location. And is mainly used in the field of cable measurement technology. It also provides all the necessary information for accurate cable testing and cable fault location. Two sets of 3D antennas detect interference fields. The degree of interference is shown on the display in three different colors. In addition to the familiar classic locating mode, the cable fault locator also has other innovative features. Thanks to the vector screen, the user no longer even has to walk over the cable to check it. This leads to more safety, for example in road traffic.

Moreover, the device contains eight passive locating modes and a sheath fault location function. As well as an SD mode and a frequency range of 98Hz – 200KHz. If the receiver swings too fast, the device alerts the user. Thereby it avoids mislocations. The measuring device also indicates cables laid too flat, field disturbances or interference fields caused by above-ground routes.

vLoc3-5000: The vLoc3-5000 receiver combines Signal Select™ (SiS), Signal Direction (SD), Bluetooth, real-time colour coding and an internal precision GPS module.
vLoc3-Cam: The vLoc3-Cam is the easiest tool when it comes to finding probes (pig transmitters) and camera heads.
vLoc3-9800: The vLoc3-9800 locator is a simple tool for locating underground utilities to prevent damage while gathering information for analysis.
vLoc3-ML is the advanced version of the vLoc3-Pro cable locator. It is the 2-in-1 device for marker and line location and enables precise location of disc and ball markers.

We are happy to advise you on the topics: Cable location | Cable measurement technology | Cable fault location.

Time Domain Reflectometer | TDR2000-3 | TDR Meter

Time Domain Reflectometer: The TDR2000 series has a large, high-resolution, color WVGA display with easily adjustable performance features. Directional control keys along with soft keys make operation intuitive and easy for the user.An AUTO selection option ensures that the most effective parameters are selected based on the required range, supporting rapid diagnosis of TDR tracking. The ability to manually override the Auto function allows fine-tuning and detection of hard-to-detect errors.

The dual tracking and dual cursor capability allows complete flexibility; the operator has complete control and instant distance indication between the two points. The tracking comparison feature also allows for in-depth inspection between tracking conditions. Extra high resolution along with daylight backlighting and user-determinable color schemes give the graphical display a dynamic quality that helps the operator identify key tracking events.

Trace storage: 100 internal trace memories are available for storing and recalling test results. The tracings can be recalled and displayed for analysis or can be compared to an active display to aid in fault location.Alternatively, the stored results can be downloaded to a computer via a USB interface using TracXpert software and the supplied USB cable. Step TDR function:The dead zone effect of a standard pulse TDR can mask defects near the end, making them undetectable. The addition of a step function on the TDR2050 fixes this problem. Step TDR technology means that the signal is impressed at full strength and remains there until a fault is detected. This makes the step TDR technology perfect for detecting faults near the end that are missed by standard pulse TDR.

We will be happy to advise you on the subject of: Time Domain Reflectometer | Fault Detection | Function TDR.

VLF Meter M-VLF28 | Cable Test

VLF Meter M-VLF28 is suitable for cable testing and cable diagnosis. If a fault in the cable networks of the medium and low voltage range causes a malfunction, quick localization is important. Eliminating the supply interruptions is immensely important. Because it saves time, money and trouble. Besides that, the advantages of VLF testing have been confirmed by scientific studies and practical field tests. Also, the VLF test is recommended by the DIN VDE standards and the standardization of the IEEE 400.

Testing medium voltage cables or rotating machines and transformers has never been easier. If a fault occurs, high-tech equipment should be available to perform the necessary measurements. In fact, prerequisite for this is state-of-the-art technical measuring equipment. The VLF measuring device M-VLF28 has manual and automatic test settings. Additionally, the diagnostic sequences offer different operating modes: such as the VLF cable test with symmetric AC voltage. But this is load independent over the whole range. Furthermore, a second option is the test with DC with positive and negative polarity or burning in case of high-impedance faults. Overall, cable sheath test as well as the sheath fault location are possible.

On top, for the discharge of test specimens, a discharge device is available. This device enables both electronic and mechanical discharge of the test specimen. Moreover, the VLF test device can be extended with an internal Tangens Delta diagnostic unit at any time. With a weight of only 14kg the high voltage generator is the smallest device on the market and is perfectly suited for mobile use. At that, a waterproof, shockproof and dustproof IP67 housing protects the M-VLF28. All in all, these features make the VLF Meter M-VLF28 an outstanding cable testing and cable diagnostic device.

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VLF Measuring Instruments | Cable Diagnosis | VLF Diagnosis.

Cable fault location | Cable fault locator M-SWG

Whether cable fault location or cable fault finding, the M-SWG is a mobile cable fault location system for complex applications. In the simplest way possible, a faulty point in high, medium and low voltage cables can be located quickly and reliably. The system contains a powerful high voltage unit with a burning function. The built-in surge generator and the TDR reflectometer find the cable fault easily. As an operator you navigate through the menu quickly and safely. The system is self-training and performs all operating steps fully automatically.

All operating steps for the test can be carried out in the simplest possible way via a control knob / rotary control. The system offers the function of cable fault diagnosis- location and cable fault handling. Together with the MP-901 it has an additional highly sensitive cable fault fine tuning. Fault handling; targeted localization using acoustic methods. Under a single compact system SWG embodies all the main components of a fully-featured cable test van: a digital pulse reflectometer, a high-voltage step-up test transformer, a powerful surge wave generator and a burn unit.

Rich functionality along with small dimensions and durable design allows using M-SWG for most cable fault tasks where a cable test van would traditionally have been utilised. In addition, the system can be used for withstand testing solid insulation with DC voltage up to 32 kV (depending on systems). M-SWG-series systems can therefore be considered as an uncompromising solution for high-quality cable maintenance – these compact and mobile units provide the full range of functionality and feature safety functions commonly available only on fully-featured van-mounted cable test and fault location systems.

TDR Reflectometer | TDR1000-3 | Time Domain Reflectometer

TDR Reflectometer: Megger offers you the greatest experience in time domain reflectometry. The method is also known to many of you as Time Domain Reflectometry, or TDR for short. It involves the determination and analysis of travel lengths and reflection characteristics of electromagnetic signals and waves in electrical conductors. Some people know this technology also under the name “cable radar”, because the principle is indeed similar to a conventional radar. The length measurement of cables in the electrical industry was one of the first important applications.

This involves measuring the time it takes for an electrical impulse to return to its origin. If one now knows the speed of propagation in the cable, which also depends on the dielectric, one can directly deduce the length of the cable from the time. On its way one recognizes also many other “events” like, connection, branches or – errors in the isolation or in the conductor caused by break, corrosion and much more besides.

With a pulse width of only 2 ns at a resolution of 0.1 m, the new type TDR 1000-3 time domain reflectometer for cable fault location from Megger features the new “Ultra Fast Pulse” technology. This improves fault location, especially in the near vicinity of metallic data and telecommunication cables. The new auto-setup function immediately recognizes the cable under test and sets all parameters appropriately in a fraction of a second; this saves time and ensures correct measurement results every time. The Trace Hold function allows clear comparison between two routes. The TDR 1000/3 has a large, high-resolution LCD display with white backlighting and various gray scales. This supports the graphical display in identifying the most important events on the track.

We will be happy to advise you on the subject of: TDR reflectometer | cable diagnosis | cable fault locator.