SMRT410 and SMRT410D multi-phase relay test system
High current, high power multi-phase relay test systems
High current, high power multi-phase relay test systems
Key Benefits
- Time efficient testing
- No PC required
- Powerful generators
- IEC 61850 testing capability
Description
The SMRT410 and 410D Megger relay test system is a multipurpose, lightweight, field portable test set capable of testing a wide variety of electromechanical, solid state, and microprocessor-based protective relays, motor overload relays, and similar protective devices. With up to 4 voltage channels and 6 high current channels, the SMRT410 meets your every testing need, providing you with a complete multi-phase test system for commissioning protection systems.
The SMRT410 VIGEN modules also provide high power in both the voltage and current channels to test virtually all types of protective relays. The SMRT410 test system can convert the voltage channels into current channels so 10 current channels are available. All SMRT test sets can be daisy-chained where all channels are time synchronised and controlled as one system to cope with extreme test applications, ie large busbar protection systems or simultaneous injection in several Merging Units.
The SMRT410 test system can be manually controlled with Megger’s Smart Touch View Interface (STVI) or with the Onboard display of the SMRT410D. The STVI-10 is Megger’s second generation of automatic/semi-automatic and manual user interface used with the SMRT family of products. With its large, full colour, high resolution, TFT LCD touch screen, it allows you to perform manual, steady-state, and dynamic testing quickly and easily using the manual test screen, as well as using built-in preset test routines for most popular relays. The STVI displays metered values such as AC and DC Amperes, AC and DC Volts, and time in both seconds and cycles. Depending on the type of test selected, other values may be displayed, such as phase angle, frequency, ohms, watts, VA, or power factor/dissipation factor. Menu screens and touch screen function buttons are provided to quickly and easily select the desired test function. Tests results can be saved to the STVI for download to a USB drive to transfer or print test reports.
For full automatic testing, the SMRT410 can also be placed under full computer control via the Relay Test Management Software (RTMS) running on a PC. RTMS is a Microsoft Windows XP/Vista/7/8/10 compatible software program designed to manage all aspects of protective relay testing using the Megger SMRT410.
Frequently Asked Questions
Can the SMRT products work with many different types of mains supplies? Can they be powered from the local supply whatever its voltage and frequency?
Instruments in the SMRT series will operate without limitations from supplies anywhere between 100 and 240 V, with frequencies of 50 or 60 Hz. This caters to just about any public supply you’re likely to find in the world!
Choosing the best relay test set to buy is a challenging task! Why are there so many different options on offer?
The real answer is that you can buy a test set that’s a good match for your requirements and budget. Relay test sets represent a substantial investment, so there’s little point in spending more than you need on buying one with many facilities you’ll never use. On the other hand, buying a test set that seems inexpensive but can’t readily meet all of your requirements is a false economy. You’ll either end up replacing it or having to use time-consuming and uncertain workarounds to carry out your tests. That’s why Megger offers such a wide range of options. Consider three-phase testing, for example. Most applications require three voltages and three currents, which is enough to simulate most three-phase systems. But sometimes, a fourth voltage is needed to test, for example, the synchro-check function in complex relays. And for testing transformer differential protection, six currents are needed! Megger offers test sets to cover all these applications, including the SMRT410, which you can configure to supply four voltages and three currents or, alternatively, six currents.
Are there test plans for my relays in the SMRT software?
RTMS includes a library of test plans called templates, which is available free of charge. The library can be downloaded and managed using a component of RTMS called “RTMS template manager.” Connect your PC to the internet, open “RTMS template manager”, and all the templates available in the cloud are shown. RTMS template manager will indicate which templates are already available on your PC. You can then download the ones that are not on your PC or update existing ones for which a newer version is available. The RTMS template manager will also indicate whether the templates are compatible with your software version. An upgrade of your local software version may be required to get some newer templates to work for you.
Can the SMRT read relay settings?
Relay settings can be read using RTMS from a variety of settings file formats or directly from relays. It is possible to read settings directly from SEL relays using the relay’s serial interface and a serial cable. It is also possible to read CSV files from Multilin relays and XRIO files from other manufacturers, like Schneider Electric.
Can I create my own test plans in the RTMS software?
Yes, you can create your own test plans using RTMS. The test plans are created as the tests are performed and added to the test report. The test report is, therefore, an active document that can be used to retest the same relay or other relays of the same kind. You can add tests to the test plan very easily. Additionally, you can create test plans in simulation mode in the software, making it extremely convenient since you don’t need to be connected to the unit or perform the actual tests to add them to the test plan.
Are licences of the software complimentary?
All the most important test functions are included with the free version of the software. This version includes tools such as ramping, advanced ramping, overcurrent, distance, sequencer, and differential. This complimentary version also allows you to create your own test plans. There’s a cost for other specialised features like COMTRADE playback, Power Swing, or Synchronizer.
Do I need to licence every PC?
RTMS software can be installed on as many PCs as you want without any additional licence. The use of the specialised features included in the Enhanced RTMS is enabled on the SMRT unit itself and can be run by any computer with the RTMS software installed.
Testing very high set values of overcurrent protection can be challenging. How can I do this safely, without risk of damage to the relay?
It’s true that performing a measurement of the pickup value by continuously injecting a high-test current could thermally overload the relay, as most overcurrent relays must not have currents greater than ten times their nominal rating applied for longer than one second. With test sets in our SMRT family, however, you can overcome this test time limitation by using the pulse ramp feature. This produces a test current in the form of successive short pulses that increase in amplitude with each pulse, thereby keeping the relay within acceptable thermal duty cycle limits.
Does Megger have products and tools for IEC 61850 applications?
Yes! Megger is very active in this field. The company released its first products for IEC 61850 applications as early as 2009 and has been active in the development of the IEC 61850 standard since the mid-2000s. Today, Megger offers the FREJA and SMRT relay test sets, the hardware required to access the IEC 61850 network. Furthermore, the software Megger GOOSE Configurator (MGC) and Sampled Values Analyser (SVA) complete the IEC 61850 test system. With the MGC and SVA embedded in the SMRT and FREJA display models, the need to connect a computer to the IEC 61850 network is eliminated, enhancing cyber security.
If my unit has a built-in display, can I still control it with my computer?
Yes, you can control all SMRT models with and without display via your PC or laptop.
