The innovative Megger Sverker 900 test set, has been conceived as an engineer’s “multi-function testbox” for protection testing. It features an 
intuitive user interface so that a PC is not required to operate the instrument.
It centres around a touchscreen that provides access to a wide range of pre-configured virtual test instruments, allowing the required test function to be selected quickly and easily. Full manual control and configuration are also supported and, in addition to the touchscreen, the instrument is provided with a large rotary knob that can be configured as required to control the current and voltage generators.
To make the Sverker 900 into a truly versatile “testbox”, additional tools are provided. These include an analogue ammeter and an analogue voltmeter, together with facilities for measuring a wide range of parameters such as phase angle; active, reactive and apparent power; power factor; resistance; reactance and frequency.
Other virtual instruments include a prefault-fault instrument, a ramping instrument and a sequence instrument. An impedance instrument is also provided, which allows relays to be tested directly from the impedance plane with conversion from impedance to voltages and currents carried out automatically by the test set. There is also a CT magnetisation instrument available. Test configurations and test results are stored in internal non-volatile memory and can be readily transferred to and from a PC via the instrument’s USB port.
The Sverker 900 uses rigid links to make the necessary connections and the sockets for the links are positioned in such a way that it is physically impossible to make the wrong connections. These simple yet novel ideas allow 
convenience to be combined with safety and speed.
BUILT-IN FUNCTIONS
SVERKER 900 contains a range of test instrument to be used depending of what kind of test to perform. Using the different test instruments you can set the output for the voltage and current generators, but also control them with the main knob.
Main instrument:
Timing test.
Manual determine the pick-up and drop-out of relay.
contact.
General: set - inject - measure.
CT Magnetisation instrument:
Test to determine the knee point voltage of the current transformer.
Prefault – Fault instrument:
Timing test - to be used mainly to test relay which require a simulation of a prefault state before the fault simulation.
Ramping instrument:
Automatic determine the pickup threshold.
Time testing, e.g. when testing df/dt relays.
Sequence instrument
Simulation of sequences e.g. auto recloser, motor starts, re-striking earth fault.
Impedance instrument:
The impedance screen allows to test relays directly from the so called impedance plane, where the conversion from the impedance into voltages and currents is automatically done by SVERKER 900.
Prefault and fault test.
Impedance ramping.
SVERKER900 TYPICAL APPLICATIONS:
Commissioning and maintenance of distribution substations and generator installations.
Testing of electromechanical, static and numerical protection relays.
Plotting current transformer excitation curves.
Burden measurement for CTs.
Polarity/direction measurement.
Impedance measurement.
Single and three-phase injection testing in switchgear.
Checking SCADA annunciation and measurement values.
Performing network measurements.
Click to view the Sverker 900 Datasheet
Go the the Sverker 900 Standard on our website.