The device offers standalone functionality and is capable of performing both secondary and primary testing, including 3-phase testing for substations.
The SVERKER range of relay test sets has been expanded with the introduction of the latest addition, the Megger SVERKER 900. This new product offers advanced testing capabilities, including three-phase testing, for use in a variety of applications such as electrical distribution substations, renewable power generation stations (e.g., PV and wind turbines), and other industrial settings.
In addition to its secondary relay testing capabilities, the Megger SVERKER 900 can also perform primary tests by connecting current and voltage sources in series and/or parallel, enabling outputs of up to 105A AC or 900V AC. Each of the three current and four voltage sources can be adjusted for amplitude, phase angle, and frequency, while the fourth voltage source can be used to test numerical relays that require a reference voltage, simulating a busbar.
Overall, the Megger SVERKER 900 is a versatile tool suitable for a wide range of general test applications.
Tasks related to commissioning and maintenance of protection relays include plotting CT excitation curves, conducting current and voltage transformer turn ratio tests, measuring burden for CT circuits, performing polarity tests, measuring impedance, carrying out single and three-phase primary injection tests, monitoring SCADA annunciation and measurement values, and checking wiring.
Relays which the SVERKER 750 can test: |
Underimpedance relays, Ansi Number 21 |
Thermal relays, Ansi Number 49 |
Inverse time overcurrent relays, Ansi Number 51 |
Overcurrent relays, Ansi Number 50 |
Automatic reclosing devices, Ansi Number 79 |
Undervoltage relays, Ansi Number 27 |
Ground fault relays, Ansi Number 50N, 51N |
Negative sequence overcurrent relays, Ansi Number 46 |
Voltage regulating relays |
Directional ground fault relays, Ansi Number 67N |
Distance protection equipment (phase by phase), Ansi Number 21 |
Tripping relays, Ansi Number 94 |
Directional overcurrent relays, Ansi Number 67 |
Power factor relays, Ansi Number 55 |
Overvoltage relays, Ansi Number 59 |
Motor overload protection, Ansi Number 51/66 |
Time-delay relays |
Differential protection (differential circuits), Ansi Number 87 |
Directional power relays, Ansi Number 32 |
Undercurrent relays, Ansi Number 37 |
Please note that the Megger (Programma) SVERKER 780 is also available which offers additional functionality in order to test frequency relays, Ansi number 81. |
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