The prevailing conditions in South Africa make it imperative that operating processes be protected from over-voltage, which is often the cause of systems failures. This can be due either to lightning strikes, prevalent in the summer months, or to voltage spikes in the supply circuit.
Vega supplies a range of suppressors which can be installed to protect measuring instruments in all situations. These include arresters for Profibus PA systems, supply and signal cables and for Ex systems.
Two-wire protection is offered for field devices and control interface units with a suppressor that uses the derivative of the higher current to ground and limit the voltage during the high level pulse.
Also available is a surge protection device that is specially designed to protect process transmitters and devices on Fieldbus systems. The TP32 provides an added level of surge protection for fieldbus transmitters.
The all important earth connection is made via the casing of the transmitter, negating the need for a separate earth connection at the transmitter. In operation, the TP32 ensures that the transmitter electronics are never exposed to damaging transients between the lines and earth. The protection network is a hybrid design consisting of high-power, solid-state electronics and a gas discharge tube, which are capable of diverting surges up to 10 kA.
Installation is simple and the units can be retrofitted at existing installations. The TP32 is screwed into any unused conduit entry on the transmitter case, allowing flying leads to connect the device to the terminal block and the internal earth stud within the transmitter housing. By connecting in parallel to the transmitter circuit, the TP32 does not interfere with the normal operation of the bus. It passes AC or DC signals without adding increased voltage drops across the segment, while consistently diverting surge currents safely to earth and clamping output voltages to safe levels.
Wireless test tools Comtest
Electrical Power & Protection
Fluke has on offer the Fluke 376 FC True-RMS Clamp Meter with iFlex, the most advanced troubleshooting tool for industrial and commercial electricians
Read more...Energy measurement module for BL20 I/O System Turck Banner Southern Africa
Electrical Power & Protection
Turck’s BL20 energy measurement module enables precise monitoring of the energy consumption of single- or three-phase systems.
Read more...Digital energy – getting the foundation right Schneider Electric South Africa
Electrical Power & Protection
Digital energy holds immense promise, particularly in Africa where the both the provision and use of energy must be managed to the finest of degrees to meet the demands of its growing, urban population and resultant industries.
Read more...Powering sub-Saharan Africa’s energy future VEGA Controls SA
Level Measurement & Control
Crude oil storage plays an important role in the energy infrastructure of sub-Saharan Africa. The management of crude oil storage in comes with numerous challenges, including safety concerns, environmental conditions and infrastructural limitations.
Read more...Empowering Africa’s renewable energy future
Electrical Power & Protection
As a global leader in renewable energy technology, SUNGROW has pioneered sustainable power solutions for over 28 years. At the recent Africa Energy Indaba 2025, SUNGROW showcased its advanced energy solutions designed to meet the diverse needs of the African continent.
Read more...The role of electromechanical solutions in supporting Africa’s industrial growth
Electrical Power & Protection
Africa’s industries are transforming rapidly. Fuelled by a huge demand for energy connectivity, better infrastructure, increased manufacturing and responsible resource management, electromechanical solutions are key to shaping this growth, allowing industries to scale up their operations efficiently and sustainably.
Read more...Empowering South Africa’s IPPs for a renewable future
Electrical Power & Protection
Many crucial parts of the economy of the future will be hugely energy intensive, foremost amongst which will be electrified transport and the large data processing required by automation and AI. Successful economies will be those that can ensure businesses and investors have access to a stable supply of low-cost renewable energy. South Africa has the opportunity to become a global leader in this regard.
Read more...Sustainable mining operations escalate as demand for critical materials to double
Electrical Power & Protection
The mining sector is at the forefront of the energy transition due to its role in extracting essential materials and minerals necessary for green technologies. As demand for renewable energy, electric vehicles and other sustainable technologies increases exponentially, so will the demand for these necessary materials.
Read more...Monitoring partial discharge on medium voltage switchgear Schneider Electric South Africa
Electrical Power & Protection
Schneider Electric South Africa has launched its EcoStruxure Service Plan (ESP) in the Anglophone African region for medium voltage (MV) switchgear
printer friendly version