Portable earth tester
May 2014
Electrical Power & Protection
Megger’s DET4TC2 is a portable, lightweight device used for easy measurement of earthing. It is capable of performing 2, 3 and 4 point testing with variable frequency, attached rod technique, stakeless testing, leakage current and ground noise voltage measurements.
The DET4TC2 is simple to use, with an interface that is easy to understand. To switch between tests, the user simply turns the rotary dial to choose the required test type. The frequency of the test can then be chosen to switch between 94, 105, 111 and 128 Hz modes and can then change the overall voltage of the test procedure between 25/50 V. A button for activating a backlight on the LCD screen allows measurements to be seen in poor lighting conditions.
By use of ICLAMP, a Megger accessory which is sold separately, the Megger DET4TC2 is able to use ART, which allows electrode testing without connection and leakage current measurements. The VCLAMP accessory performs true stakeless measurements, ideal for areas where it is impossible to use driving stakes.
The overall resistance range of this device is between 0,01 Ω and 200 kΩ, the ground noise voltage range is between 1 and 100 V and ground current measurements are between 1 and 20 A. To maintain the accuracy of test results, the DET4TC2 also includes noise evaluation and rejection, and the device will automatically reject noise voltages of 40 V peak to peak to minimise the overall effect electrical noise can have on test results. This device is rated to 100 V CAT IV and is in compliance with IEC 61557-5.
For more information contact Stuart Ashton, Surgetek, +27 (0)11 792 1303, [email protected], www.surgetek.co.za
Further reading:
Africa’s net-zero ambition must become operational
Schneider Electric South Africa
Electrical Power & Protection
Schneider Electric’s Rohit Chashta argues that the biggest gap in Africa’s green transition is not ambition but execution, and outlines how advisory services, bankable project roadmaps, digital visibility and SF6-free switchgear can turn sustainability commitments into measurable progress.
Read more...
High-efficiency half-brick DC-DC converters
Vepac Electronics
Electrical Power & Protection
The Supreme series half-brick DC-DC converters from Vepac Electronics use synchronous rectification for high conversion efficiency, in a six-sided metal case built to withstand harsh industrial and transportation environments.
Read more...
Zinc-based batteries power a more sustainable energy future
Electrical Power & Protection
Zinc-based batteries are gaining ground as a safe, recyclable and cost-effective energy storage option, from consumer electronics to grid-scale systems. The International Zinc Association’s Simon Norton explains why zinc is well placed to support the clean energy transition.
Read more...
Energas introduces lower-cost German gas genset for South African market
Electrical Power & Protection
Energas Technologies will supply R Schmitt Enertec’s new Energy Line genset to the South African market, offering German-engineered gas-to-power generation of 400 to 500 kW at a lower entry cost through focused standardisation and a simpler standalone architecture.
Read more...
ACTOM plays key role in large transmission substation project in Swellendam
ACTOM Electrical Machines
Electrical Power & Protection
ACTOM has been appointed to engineer, procure, construct and commission the 1000 MVA main transmission substation for the Overberg Wind Farm in Swellendam, one of the largest substations of its kind in South Africa.
Read more...
Reliable power conversion from high-voltage DC buses
Conical Technologies
Electrical Power & Protection
The MEAN WELL DDRH-240 from Conical Technologies is a high-reliability DIN-rail DC-DC converter with a wide 250 to 1500 V DC input range, deriving stable low-voltage power directly from high-voltage DC buses in renewable energy, storage, charging, railway and industrial installations.
Read more...
AES maintains a strong value and safety stance on boiler retrofits
Electrical Power & Protection
AES Commercial Director Dennis Williams explains when a boiler retrofit makes more sense than replacement, outlines the range of efficiency and emissions upgrades available, and draws the line at safety: a boiler not legally signed off is shut down, no exceptions.
Read more...
The grid needs to become more intelligent
Schneider Electric South Africa
Electrical Power & Protection
South Africa’s power grid is becoming bidirectional and far more dynamic as distributed energy resources proliferate. Schneider Electric’s Nishandra Bajinath explains why digitalisation, DERMS and aggregation are essential to keep this increasingly complex grid stable and efficient.
Read more...
ACTOM’s integrated electrical solutions reduce project risk and accelerate delivery
Electrical Power & Protection
ACTOM has secured multiple orders across four divisions for the Naos-1 hybrid solar and battery project in the Free State, demonstrating its integrated model for supplying the full electrical chain from high-voltage equipment to distribution transformers.
Read more...
Smarter energy management starts with intelligent electrification
ABB South Africa ABB Electrification Products
Electrical Power & Protection
ABB Electrification specialists Adeline Maleka and Nokulunga Dube explain how the convergence of electrification, digitalisation and automation is helping South African industries gain real-time visibility, reduce energy waste and build operational resilience.
Read more...
printer friendly version