SVERKER900 relay and substation test system
Three current and four voltage generators
All sources can be used - separate, in parallel, or in series - for fast switching between single- and three-phase testing
Test self-powered relays with ease
The powerful current generators perform accurate tests with balanced and linear loads
Generate 900 V and 105 A in single-phase mode
Easily handle instantaneous-trip testing of overcurrent relay protection (including 5 A secondary input) without compromise
Standalone functionality in the field
With its built-in LCD touch screen and USB drive, the SVERKER900 eliminates the need for a PC
About the product
The SVERKER900 relay and substation test system is the engineer’s ultimate toolbox, addressing the increasing need for three-phase testing in electrical distribution substations, renewable power generation stations, and industrial applications. It has a powerful combination of current and voltage sources and a range of measurement possibilities.
The SVERKER900 is specifically designed for basic, manual three-phase secondary testing of protection devices. In addition, you can perform various primary tests as the current and voltage sources can be connected in series and/or parallel to give you up to 105 A AC or 900 V AC output.
The instrument’s three current sources and four voltage sources can be individually adjusted with respect to amplitude, phase angle, and frequency. The fourth voltage source allows for testing of numerical relays that need a reference voltage simulating the busbar. Operating the relay tester is also incredibly easy thanks to its intuitive user interface presented on an LCD touch screen.
- Current channels
- 3 AC and DC
- Number of binary inputs
- Output frequency range
- DC, 10 - 600 Hz
- Voltage channels
- 4 AC and DC
Product documentsAdditional documentation can be found on the support tab
FAQ / Frequently Asked Questions
400 Hz power systems are sometimes encountered in marine applications and, far more frequently, in the aeronautical industry. These high-frequency systems are favoured because transformers and other components operating at this frequency are smaller and lighter than their 50/60 Hz counterparts. The SVERKER900 range can produce voltages and currents from DC to 600 Hz.
There are two parts to the fee structure – one is the software on the SVERKER screen that is categorised into three types: Basic (consists of Main and Prefault-Fault), Advanced (consists of Basic, CT Magnetization, Ramping, and Sequencer), and Expert (consists of Advanced and Impedance). The second is the reporting software, which is an additional cost but is optional. The SVERKER Viewer is a PC-based software that can create graphical test reports in PDF format. The PDF test report is created by opening a saved test file (on a USB drive) from the SVERKER900.
It is possible to test recloser relays using the different tools available in the SVERKER software. In particular, the sequencer tool simplifies the job of testing recloser relays and recloser controls.If the recloser relay is inside a recloser control or in the field, you may use a tool called the Megger Electronic Recloser Test Simulator (ERTS) to interface with the recloser control. The ERTS allows testing of the recloser relay directly in the controller without disconnecting the relay analogue inputs or binary inputs or outputs.
The SVERKER software does not offer any test plans for relays. This software is supposed to be used for manual and semi-automated testing.
Further reading and webinars
SMRT46 and 46D multi-phase relay testers
You may not be getting output for two reasons. First, the channel is disabled; therefore, activate the channel. Second, the thermal cut-out could have tripped due to an overload; in this case, wait until the unit has cooled.
The miniature circuit breaker F1 may have tripped; please check the miniature circuit breaker.
The U4/DC amplitude field may be disabled because the voltage generators are set in parallel or serial mode (U1-U4). Set the generators to work separately.
The binary inputs won’t operate for two reasons. First, you have the wrong setting in the BI menu; therefore, check the BI menu, voltage/contact sense open or closing. Secondly, the debounce filter time is inappropriate; please change it to an appropriate time. The default is 5 ms.
The SVERKER is in the wrong mode; go to the system configuration menu and ensure the “Advanced mode” is on.
A malfunctioning ammeter indicates that Fuse F2 is faulty. Please replace the F2 fuse.
The ammeter or voltmeter will display incorrect values if your settings are wrong. Check settings for AC/DC and ranges.
Interpreting test results
Relay testing can range from basic tests, like verifying that the relay detects the right overcurrent conditions, to highly complicated ones that test many operating conditions or even the synchronisation between different relays. With that in mind, the text below presents frequently asked questions about results interpretation and verification that the results measured are viable.
There is no visual indication of pass or fail after performing tests with the SVERKER unit. You must assess your result based on the type of test being performed and the relay protection/setting being tested.
You should evaluate your results using criteria specific to the test. It is up to you to obtain the tolerance for a particular test to assess your results. The exact values for the tolerances typically can be found in the relay’s manual or selected from local test procedures.
The overcurrent curves are built around a pickup value, a time dial, and a curve type. They are sometimes affected by the election of an electromechanical reset. Those are the first things to check if the times are not correct.
If the curve followed by the results is like the target relay curve, but the times are lower than those of the target curve, then perhaps the issue is that we have selected a higher time dial than that of the relay. Another reason for lower times could be the choice of pickup value. If, for the test, we choose a pickup value higher than that of the relay, then the times will also be lower.
If the form of the results curve is different, then the type of the curve could be the reason. If there is an electromechanical reset or if we are testing an electromechanical relay, we must provide enough time between consecutive test points. This extra time will allow the relay to fully reset or return to the zero position before injecting current again.
Sometimes an instantaneous element is also inadvertently tripping on the same contact. This situation should be easy enough to verify since the trip times will be very low. In this case, testing for multiples below the pickup of the instantaneous will fix the issue.
User guides and documents
Software and firmware updates
FAQ / Frequently Asked Questions
Yes. Perform the test using the multiple timing function in the “prefault->fault instrument” selected from the “Home” menu. Then create the report in the SVERKER Viewer.
As with most controls on the SVERKER, it is possible to modify the configuration directly on the control by simply clicking on it. To change the configuration of a binary input, click on the BI option on the home screen. There, the user can change the type of binary from wet or voltage-activated to dry, and change the type of action from normally open to normally closed contact.
Yes, there's a library of videos available on YouTube that cover most of the aspects of using the software.