Megger's portable relay tester
June 2010
Electrical Power & Protection
Megger’s SVERKER 760 and SVERKER 780 protection relay test sets can now optionally be ordered with a rugged protective case that makes them even easier and more convenient to store, transport and use. The case, which is constructed entirely from non-conductive materials, incorporates a robust hinged carrying handle, and is also fitted with a second extendable handle and wheels, allowing it to be moved around easily and with a minimum of effort.
To allow unimpeded access to the instrument, the lid of the case can be removed completely and, as a further aid to convenience, provision is made within the case for the storage of test leads. When closed, the case has an IP67 ingress protection rating to safeguard the instrument against damage by water, dust or other contaminants while it is being stored or transported.
The single-phase protective relay test sets are designed to maximise testing efficiency while minimising complexity. Both models feature logical front panel layouts that make setting up straightforward, and they have easy to read displays that can be used to show Z, R, X, S, P, Q, phase angle, as well as time, voltage and current.
As a further aid to testing efficiency, the voltmeter function of the instruments can be configured as a second ammeter, which is particularly useful when testing differential relays, and the display incorporates a freeze function for capturing short duration voltage and current transients.
As well as all of these facilities, the SVERKER 780 also incorporates a wide-range variable voltage source that can be adjusted in frequency from 15 to 500 Hz, and that has a continuously variable phase-shift facility. This makes the SVERKER 780 particularly useful for testing directional protective equipment, protection schemes that involve phase shifting and special relays that operate at non-standard supply frequencies. The unit also incorporates a USB port, making it easy to link to a PC running Megger’s powerful SVERKER Win protective relay testing software package.
For more information contact Stuart Ashton, Surgetek, +27 (0)11 792 1303, [email protected], www.surgetek.co.za
Further reading:
Grid to backup power in zero seconds
Electrical Power & Protection
South Ocean Electric Wire has completed a solar installation that marks a global first: a seamless switch from grid to backup power in zero seconds.
Read more...
Three decarbonisation myths and how organisations can debunk them
Schneider Electric South Africa
Electrical Power & Protection
A UN Climate Change Report revealed that the world is on track to miss its 2050 net zero targets, with temperatures expected to increase by over 2,4°C by 2100. To help shift positive intent to concrete action, Schneider Electric outlined three of the most common myths surrounding decarbonisation and how organisations can get started on their decarbonisation journey.
Read more...
Tackling the barriers of renewables and empowering the manufacturing sector
Electrical Power & Protection
Solar energy is surging in South Africa, but the energy is primarily self-consumed, meaning many manufacturing sites draw power directly and don’t gain more energy independence through comprehensive energy storage or hybrid energy solutions.
Read more...
Three-phase filters for electromagnetic interference
Vepac Electronics
Electrical Power & Protection
Vepac Electronics has available three-phase filters that provide a solution to electromagnetic interference generated by equipment or from an AC source.
Read more...
The age of grid defection is upon us
Electrical Power & Protection
Solar and battery systems have got so cheap that many private individuals, farmers and companies are waking up to the fact that in many locations in South Africa it is now less expensive to be off the electrical grid than to be on it.
Read more...
Measure the electrical performance of your machinery
Vepac Electronics
Electrical Power & Protection
The TELE eCap from Vepac Electronics allows you to use energy wisely and reduce operational expenses.
Read more...
Connectors for quick, easy and tool-free in-field termination
Electrical Power & Protection
KYOCERA AVX has released the new 9288-000 Series hermaphroditic wire-to-wire and wire-to-board connectors for lighting and industrial applications. These unique two-piece connectors facilitate WTW termination with two identical mating halves, which simplifies BOMs.
Read more...
Biomass is building up steam
Electrical Power & Protection
Pressure is mounting for local manufacturers to swap fossil fuels for biomass to reduce their carbon footprints and mitigate carbon taxes. Experienced steam and boiler operations and maintenance service provider, Associated Energy Services has spent the past 14 years reviewing solutions.
Read more...
Würth Elektronik expands its power module series
Electrical Power & Protection
Würth Elektronik has expanded its successful MagI³C-VDLM power module series with two new models that further enhance the performance of the existing portfolio of compact DC/DC power supply modules.
Read more...
The journey towards renewable energy in the Seychelles
Electrical Power & Protection
The Seychelles is committed to its ambitious goal of achieving net-zero carbon emissions by 2050. Recent technological advancements and strategic planning are steadily paving the way for a more sustainable future.
Read more...
printer friendly version