Protection Relay Testing Equipment

The real goal is to ensure you can buy a relay 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 a unit with features 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 need to replace your relay test kit or rely on time-consuming, uncertain workarounds to perform your protective relay and secondary injection testing, leading to dubious results. That’s why Megger offers such a wide range of relay test unit 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 SMRT46, which you can configure to supply four voltages and three currents or, alternatively, six currents.

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.

Yes! Megger has taken a major stake in the company IPS Energy which has many different software solutions for asset management and asset performance management including secondary injection tests for protection relay.

The EPIS and RELEX software modules are dedicated to management of relay protection assets. Check it out on their website www.ips-energy.com or contact us for further information.

Yes! There is no limitation in the onboard software so everything that can be done on the PC can be done without a PC. 

That includes anything from simple manual tests to fully automated tests through test templates. By using the onboard screen potential PC related issues such as connection or firewall problems, are avoided.

The right protection relay tester depends on what you're testing and how. Key things to consider include:

• Single-phase vs multi-phase Many protection applications need three voltages and three currents, while transformer differential and synchro-check testing may call for additional channels.
• Portable vs bench use Field commissioning favours a portable protection relay test set, while lab or workshop testing may suit a bench-based system.
• IEC 61850 support If you're testing on digital substations, you'll need a tester with GOOSE and Sampled Values capability.
• Automation and software Automated test templates and relay test management software can significantly speed up routine maintenance testing.
• Commissioning vs maintenance Complex commissioning work often needs more channels and configuration flexibility than routine maintenance checks.

For routine maintenance, our single-phase and compact multi-phase testers are usually sufficient. For commissioning complex protection schemes or IEC 61850 digital substations, our SMRT and FREJA ranges offer the additional channels and software support you'll need.

Our protection relay testers support industrial relay testing as well as utility and substation work. This includes generator protection, motor feeder protection, renewable energy sites such as wind farms, and plant distribution systems, alongside traditional substation and grid protection testing.