Device pinpoints underground cable faults with unprecedented accuracyJanuary 16, 2015 REDWIRE is news you can use from leading suppliers. Powered by FRASERS.
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For more than 100 years, Megger has provided electric test equipment and measuring instruments for electrical power applications. Its products provide testing solutions in the most critical maintenance areas, including cable fault locating.
The Digiphone plus is one such solution — a portable and versatile surge wave receiver that precisely pinpoints flashover faults in buried cables and sets a new standard by applying innovative audio concepts. This combination, the company says, results in a pinpointing device for high-resistive faults that is unsurpassed in sensitivity.
Digiphone plus works off the “thunder and lightning principle” of fault location. In the same way you can measure how far away a storm is by counting the distance between a faster lightning flash and its slower thunder, this pinpointer works by measuring the energy around an underground fault. If you think of the flashover at a fault as the lightning, the Digiphone measures distance by figuring timing between that electromagnetic “flash” and the seismic (or acoustic) jolt also created at the moment of flashover.
Digiphone plus combines a number of must-have features in a single device, including a trend indicator; line tracking using the left/right indicator on the display; outstanding acoustic qualities for locating faults quickly and reliably; a high level of accuracy due to selective recording of magnetic fields; a very stable sensor; trigger thresholds for acoustic and magnetic channels set fully automatic; Intelligent Background Noise Reduction (BNR); Automatic Proximity Mute (APM); a volume limiter, which can be switched on and off; and a height-adjustable telescopic handle for the sensor.
Digiphone plus, as well as all other Megger products — spanning 30 distinct product groups with more than 1,000 specific products — meet the highest standards for quality, reliability and safety. The company’s facilities are certified to full operational requirements of the ISO 9001 quality standard.
Contact Megger for more information on this or any of its electric test equipment and measuring instruments.