Megger finds cable faults fast
February 2013
Electrical Power & Protection
The new PFL22M1500 cable fault location system from Megger provides all of the facilities needed for fast, accurate and safe location of faults on underground cables. An essential resource for utilities and others concerned with maintaining continuity of supply, this new test set incorporates a high-voltage generator with surge generation capabilities and a high performance time domain reflectometer, enabling a wide range of fault pre-location and location techniques to be deployed without the need for additional equipment.
Designed for reliability and ease of use, the high-voltage generator provides user-selectable surge output ranges of 0 to 8 kV and 0 to 16 kV, with constant surge energy of 1500 Joules. It also offers a steady DC output of 0 to 10 kV at up to 115 mA, and 0 to 20 kV at 55 mA.
These facilities, in conjunction with the integrated time domain reflectometer support the use of the arc reflection, arc reflection plus, differential arc reflection and current impulse techniques for fault pre-location.
The high voltage generator also allows users to perform conditioning to stabilise faults and to carry out high-voltage insulation tests. In addition, the surge generator function is an ideal complement for the Megger MPP2000 acoustic and electromagnetic pinpopinter for the accurate final determination of fault locations.
The time domain reflectometer has a large 260 mm XGA colour display and offers intuitive and convenient single jog-dial operation. It covers distances from 100 m to 55 km in 10 ranges, and offers pulse widths from 50 nS to 10 μS. When used with the arc reflection plus fault pre-location technique, it can capture up to 1024 traces during the period of the arc, and subsequently analyse these to provide the best possible fault location information in even the most difficult of cases.
As standard, the PFL22M1500 cable fault location system operates from nominal 110 or 220 V single-phase supplies. An inverter module is available to allow power to be derived from a battery source to facilitate use in locations where no convenient mains supply is available.
For more information contact Stuart Ashton, Surgetek, +27 (0)11 792 1303, [email protected], www.surgetek.co.za
Further reading:
Unpacking the technoeconomic case for cleaner power in wastewater plants
Schneider Electric South Africa
Electrical Power & Protection
Behind every reliable wastewater plant is an electrical system exposed to the effects of harmonics, voltage distortion and overloaded networks caused by fleets of variable speed drives on pumps and aerators.Together, they steadily drive up maintenance demands and elevate the risk of failure.
Read more...
Energy strategy as a competitive advantage for African businesses
Electrical Power & Protection
Energy is no longer simply something that businesses consume. When managed effectively, it becomes a controllable asset that supports resilience and efficiency and sets the foundation for long-term competitiveness.
Read more...
World’s fastest 14 bit arbitrary waveform generator
Vepac Electronics
Electrical Power & Protection
The ARB Rider AWG-700 from Vepac is the world’s fastest 14 bit arbitrary waveform generator, with a 20 GS/s real-time update rate and 14 bit vertical resolution.
Read more...
Transformers for mining house in Botswana
ACTOM Electrical Machines
Electrical Power & Protection
LH Marthinusen is completing the manufacture of two 30 MVA transformers for a mining house in Botswana.
Read more...
DIN-rail power supplies for reliable and efficient AC/DC conversion
Conical Technologies
Electrical Power & Protection
The Claf Power AD75-2BxxS series DIN-rail power supplies are designed for industrial automation, control systems and process environments.
Read more...
Rethinking power for Africa’s data centres
Schneider Electric South Africa
Electrical Power & Protection
Africa’s digital economy is scaling faster than its power systems. If it wants resilient, competitive and sustainable data centres, the starting point must be a grid-to-chip architecture rather than a genset-first mentality.
Read more...
The growing decentralisation of power grids
Electrical Power & Protection
The decentralisation of power generation is changing how national grids function. For electrical engineers, several new challenges and opportunities are on the horizon.
Read more...
Custom mini substations for Zambian copper mine
Electrical Power & Protection
Recent orders to supply seventeen specially engineered mini substations for an underground copper mine in Zambia reinforces Trafo Power Solution’s track record in delivering customised electrical solutons for challenging environments.
Read more...
Unifying building information into a sea of insight
Schneider Electric South Africa
Electrical Power & Protection
Facility managers realise that in order to gain the most from building automation, they can longer deploy and operate technologies in isolation. Modern, integrated building management solutions address this challenge by bringing data from multiple sources and dispersed locations like HVAC, lighting, access control, lifts, generators, field devices, energy and
Read more...
Smart power solutions for a low-carbon future
ABB South Africa
Electrical Power & Protection
As the world marked Earth Day 2026, ABB is highlighting the role of low-voltage smart power solutions in improving energy efficiency, reducing emissions and enabling more sustainable infrastructure.
Read more...
printer friendly version