ESG NT2 and Fault Sniffer 2
Cable fault location in the LV network without supply interruption
Fault location in low voltage networks could previously only be carried out when households were disconnected from the mains. With the help of the new 50/60 Hz voltage gradient method from Megger, it is now possible to detect cable faults with the ESG NT2 while the power is still on and households are still connected.
It is no longer necessary to waste time securing customers or waste money on expensive excavations to disconnect households. In the event of a fault, a network operator can now be more cost-saving, secure and rapid in their response.
How it works
1. A fault occurs in the low voltage grid
2. Network operator replaces the fuse
3. Fuse works temporarily
Locate the fault with ESG NT2
4. Fuse does not hold
Locate the fault with Fault Sniffer 2
ESG NT2 - digital earth fault locator
Pinpointing means precisely locating faults in the cable. In the event of a cable fault, the 50/60 Hz fault current flows to earth. It forms a voltage funnel at the exit point, which is measured with earth spikes and an earth fault locator. The 50/60 Hz voltage gradient method is used to locate a cable fault: As the fault location is approached, the voltage gradient rises and falls again after the fault has been located. The fault can be pinpointed and clearly identified.
Fault Sniffer 2 - Gas detector
Most cable faults cause the release of combustion gases which are captured and detected by the vacuum technology of the Fault Sniffer 2. The data is analysed in real time and provides you with a graphical representation of the combustion gas concentration. The cable fault is located at the point of the highest measured gas concentration. The intelligent two-sensor technology also detects natural gas and greatly increases safety. Find cable faults quickly and safely without the need for a service provider or cable test van which results in significant cost cuttings.
