Megger CR-19000 SVERKER 900 Basic

The Megger SVERKER 900 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 versatility of measurement possibilities.

The SVERKER 900 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.

All three current and four voltage sources can be individually adjusted concerning amplitude, phase angle, and frequency. The fourth voltage source allows for the testing of numerical relays that need a reference voltage simulating the busbar. Operating the relay tester is also effortless thanks to its intuitive user interface presented on an LCD touch screen.

SVERKER 900 Map

Power Plus Versatility

Well capable of generating up to 900 V, SVERKER 900 simplifies performing magnetization curves for current transformers. In keeping with tradition, its four voltage generators each offer a generous 125 VA power output. All are galvanically separated for maximum flexibility. With 300 V per channel, it's a natural choice in industrial plants dependent on motor and generator protection testing, as well as relay protection in MV substations.

The three current generators each deliver up to 35 A and their combined effect can be fully deployed in a single phase to reach 105 A in total. At last, you have a modern relay tester that easily handles instantaneous- trip testing of over-current relay protection (including 5 A secondary input) without compromise. And without a mass of confusing cables.

Self-Powered Relays

Self-powered relays which proliferate with the increase of distributed generation, are a challenge to modern test equipment due to the unbalanced and non-linear load. The powerful current generators of SVERKER 900 perform accurate tests without a problem.

What's more, a transformer differential relay poses no problems either. Simply add the desired level of harmonics to test the correct operation of the harmonics restraint function.

Time Measurement Made Easy

SVERKER 900 has a total of five timer or binary inputs. Four start internally while the fifth acts completely independent of generator activation. This allows it to function as an independent timer for a variety of tasks

The four internal inputs can be used singly or conditioned to work together. Just switch on or off inputs as needed. A few taps on the touch-screen buttons are all that's needed. And it's just as easy to set an individual function for each input. Experienced SVERKER users will feel right at home when setting timer conditions, which promotes quick, smooth, and confident working.

Test File Manager Saves and Reuses Tests

A special SVERKER 900 Test File Manager application accelerates and simplifies relay testing in the field. Test File Manager both saves performed test results and allows them to be reused as 'test plans' when repeating the test or as a template for similar tests.

Test files are transferred via USB to a PC, where they through the SVERKER Viewer software can be analyzed further, saved as a PDF file, and printed as a report. Test File Manager speeds testing in the field and greatly simplifies the further handling and processing of results. A familiar, easy-to-follow touch panel makes setting timer conditions quick and confident.

Testing Distributed Generation Plants

In the strive to become climate-neutral, electricity and renewable energy sources, such as wind and solar, play a key role. The significant increase in distributed power generation puts new demands on grid safety and regulation. With this in mind, IEC 2019 released a new standard, IEC 60255-181:2019, specifying relay performances and test methodologies of frequency relays including ROCOF protection.

ROCOF's role is to detect power supply failures and isolate the generator in the event of loss of supply. If the power flow from the utility supply before an islanding generator is not zero, the frequency changes to the islanded system's natural resonance frequency. Islanding can be dangerous to utility workers, who may not realize that a circuit is still powered, and it may prevent the automatic re-connection of devices.

It is therefore essential that distributed generators both detect islanding and immediately stop producing power. The ramp instrument is compliant with the IEC 60255-181:2019 standard and SVERKER 900 offers quick, safe, and convenient testing of the vital ROCOF function.

Motor Protection Testing

Motor protection is a very common feature in most industrial facilities, including power generation. It also requires a great deal of power; extended loading time at high power is needed for the actual relay testing, for example. Furthermore, the set-up curve is quite complex.

It's a big advantage for users if they can test this protection to the full without worrying about test equipment capacity. A simple and intuitive user interface for setting up the test sequence demanded by the relay also makes their work much easier. SVERKER 900 delivers on both counts.

CT-testing

All decision-making depends on accurate information and managing a power grid protection system is no different. That both current and voltage transformers are properly connected to their protection and give correct values is fundamental to this task. Since the very beginning, the SVERKER family of relay and substation testing equipment has always helped simplify CT testing and verification. SVERKER 900 is no exception. This new full three-phase testing model has now been developed to encompass:

• Excitation curves
• Polarity
• Ratio
• Burden

Key Features

• The test box for substation three-phase testing
• 3 currents and 4 voltages
• Standalone functionality
• Rugged and reliable for field use
• Generation of 900 V and 105 A in single-phase mode
• Secondary and primary testing

What's Included?

• Standard Test cable set
• Earth (ground) cable
• Cable set, to be used up to 900 V
• Flight case with wheels
• Inside the lid are ten jumpers “parked” in holders, a touch screen, a pen, and the quick guide