The smart solution for protective relay testing
August 2014
Electrical Power & Protection
Megger’s SMRT36 is a small, light protective relay test set and has more output power than any other comparable three-phase instrument available anywhere. The SMRT36 has a unique constant power output, produces a compliance voltage of 50 V at up to 4 A (200 VA rms), and maintains 200 VA output power up to 30 A, making it ideally suited for testing in today’s installations and legacy plants.
The SMRT36 is Megger’s fourth generation of automated relay test sets. This test set takes full advantage of Megger’s patented developments from previous models to produce an instrument that offers greater precision than its predecessors, with reduced size and a reduced weight of only 12 kg. The SMRT Power Box is specifically designed to test protective relays that are used in conjunction with CTs having 1 A and 5 A secondaries. It combines the capacity to simulate high current faults with the amplifier precision needed to satisfy even the most demanding requirements. The instrument has three current output channels, plus three convertible channels that can be configured as either voltage or current outputs. This makes it possible, for example, to test numerical current differential relays that require six currents.
Its patented design allows the SMRT36 to deliver high power in both the voltage and current channels, as needed in high-burden applications such as testing electromechanical relays. The unique constant power output of the current amplifiers produces a compliance voltage of 50 V at up to 4 A (200 VA rms), and maintains 200 VA output power up to 30 A. Two current outputs can be series connected to double the compliance voltage to 100 V and provide a constant 400 VA output power at 4 A and up.
To facilitate panel testing and the testing of high-burden electromechanical distance protection relays, the high constant power output is also available from the PowerV voltage amplifiers. From 30 V to 150 V, these deliver a constant 150 VA, providing high current output at difficult low test voltages.
Of equal benefit is the high current output capability. The SMRT current amplifiers can deliver 30 A per phase continuous and up to 60 A per phase for short durations. For instantaneous overcurrent test applications, the SMRT36 can provide up to 180 A at high power.
Megger’s SMRT36 protective relay test set can be controlled manually with the optional Smart Touch View InterfaceTM (STVI), which provides a simple way of testing even the most complex relays. The STVI, with its large full colour high-resolution touchscreen, allows users to perform manual, steady-state and dynamic tests quickly and easily, and has built-in preset test routines for most popular relays. For fully automated testing, the SMRT is supplied standard with AVTS, Megger’s advanced visual test software package.
For more information contact Esias Labuschagne, Surgetek, +27 (0)11 792 1303, [email protected], www.surgetek.co.za
Further reading:
Localised inverter-integrated transformer
Electrical Power & Protection
ACTOM, South Africa’s largest manufacturer, repairer and distributor of electromechanical equipment, is launching a breakthrough in renewable energy integration with its localised inverter-integrated transform
Read more...
Steinmüller Africa integrates advanced technologies at Mondi’s boiler project
Electrical Power & Protection
Steinmüller Africa is leading a boiler project at Mondi’s Richards Bay mill. The 18-month undertaking showcases the company’s blend of engineering excellence and cutting-edge technology.
Read more...
ABB innovation for energy efficiency and sustainability
Electrical Power & Protection
The application of sensor technology to reduce the operational and standby power losses of traditional current and voltage transformers can lead to energy savings of 181 MWh over a 30-year period, the lifetime of a typical switchboard in the African environment.
Read more...
UPS systems are key to keeping SA’s automotive industry up and running
Schneider Electric South Africa
Electrical Power & Protection
During loadshedding, PLCs and OT systems often fail, not because they are directly tied to the factory’s core manufacturing process, but because they are now an integral part of IT infrastructure. When an IT system shuts down, the impact is far more complex than simply restarting machinery.
Read more...
ACTOM advances energy infrastructure
Electrical Power & Protection
At this critical juncture where South Africa is poised to modernise its power infrastructure, ACTOM’s Engineering Projects and Contracts (EPC) Division showcased its capabilities for the first time at Enlit Africa 2025.
Read more...
Advanced contactor solution to revolutionise motor management
Schneider Electric South Africa
Electrical Power & Protection
Schneider Electric South Africa has launched the TeSys Deca Advanced, an advanced contactor solution designed to revolutionise motor management with unparalleled efficiency, reliability, simplicity and sustainability.
Read more...
Steaming ahead with boiler skills development
Electrical Power & Protection
As an expert in steam and boiler operations and maintenance, AES is very focused on safety, quality, technology advancement and the development of human capital. The company invests heavily in training and the promotion of talented people on an equal opportunity basis into the industrial operations environment.
Read more...
High-performance oscilloscopes
Electrical Power & Protection
RIGOL Technologies, a global leader in electronic measurement instruments, has launched two powerful additions to its oscilloscope portfolio.
Read more...
Revolutionising solar farm management with remote monitoring solutions
Electrical Power & Protection
As South Africa continues its transition to renewable energy, the efficient management of solar farms has become more critical than ever. Iritron, a leader in industrial automation and control systems, is at the forefront of this revolution, offering advanced remote monitoring solutions tailored to the unique challenges of solar farm operations.
Read more...
SKF announces wave energy technology partnership
SKF South Africa
Electrical Power & Protection
SKF and Carnegie are collaborating on the design and delivery of a power take-off system driven by the motion of a buoy that sits a few metres below the surface of the ocean and moves with the ocean’s waves.
Read more...