The rising demand for electrical energy increases the importance and priorities of uninterrupted service to the customer. Thus, faults in power distribution networks have to be quickly detected, located and repaired. As market and innovation leaders we are the only producer of a series of cable test van systems for testing and fault location of power networks, satisfying all customer wishes. We are the utility location specialists.
Testing
Insulation damage or faulty cable joints are recognised by DC cable testing or, in the case of PE and XLPE cables, through VLF 0.1 Hz Cosine-Square-Voltage.
Pre-location
Low resistance faults, interruptions and short circuits can be located with reflectometers (TDRs). All HV pre-location methods use the TDR for the evaluation and visualisation.
Line location
To determine the cable path and cable depth.
Pin-pointing
To locate the precise postition of the cable fault.
HV – fault location methods
ARM Plus
ARM Plus is a further advancement of the patented and state-of-the-art cable fault location method ARM (Arc Reflection Method).
With ARM Plus a stable arc with sufficient burning duration is ignited at the location of the fault with a double surge method. The fault location pulse is created by the discharge of a pulse capacitor and has a voltage of up to 1000 V. This very energetic pulse enables an improved fault location, especially in a long-distance-range.
The ARM Plus method shows, simultaneously, the low-voltage trace as well as the fault trace in an automatic testing sequence on the monitor. The location of the fault is determined by the seperating point of both traces, already known from the ARM method.
Decay Plus
Decay Plus is a further development of the cable fault pre-location method ARM Plus.
Decay Plus enables the fault location on cables with extremely high ignition voltages
(up to 80 kV) with excellent locating precision and clarity of the TDR traces.
The Decay Plus methodcombines the advantages of the clear and precise ARM Plus method with the availability of the highest ignition voltage provided by the systems test set, similar to the Decay method.
Active ARM
An optimized series impedance in the output circuit of the surge generator provides the full voltage of the surge generator at the fault location, to ignite the arc.
This concept uses two active sources for a controlled arc stabilisation with an extra 640 J source.
Safety
The safety of the user of electric systems is of utmost priority. The design of the test van systems and instruments take especially the safety issues very seriously. |
Current exibitions
