Megger Smrt1 Single Phase Relay Test System

As a stand-alone unit the MEGGER SMRT1 SINGLE PHASE RELAY TEST SYSTEM has the “smart” combination of high compliance voltage and high current to test electromechanical, solid-state and microprocessor-based overcurrent relays, including voltage controlled.

SKU: 5148

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Megger Smrt1 Relay Test System

The Megger SMRT1 is a versatile relay test set used for testing single-phase protection relays and schemes. This portable device is designed to provide high power, performance, and advanced testing capabilities while being lightweight and user-friendly. It can be used for various applications including testing overcurrent relays, undercurrent relays, directional relays, distance relays, and more.

As a stand-alone unit the SMRT1 has the “smart” combination of high compliance voltage and high current to test electromechanical, solid-state and microprocessor-based overcurrent relays, including voltage controlled, voltage restraint and directional overcurrent; test under/over voltage, single-phase impedance, single-phase power, directional, synchronizing, auto-synchronizing, negative sequence under/over voltage, current balance, frequency, volts/hertz, reclosing, thermal, and various other relays, see the Applications Guide for more.

Key Features

  1. Versatility: Designed to test a wide range of protective relays, including overcurrent, undercurrent, directional, distance, and differential relays. Its adaptability makes it suitable for multiple applications in power systems testing.
  2. High Power Output: Despite its compact size, the SMRT1 offers a robust output capable of delivering significant current and voltage needed for comprehensive testing.
  3. Intuitive User Interface: Features an easy-to-use interface that simplifies complex testing procedures. This allows for efficient setup and operation, reducing the time needed for testing and training.
  4. Advanced Testing Capabilities: Supports both manual and automated testing sequences. The automation capability is particularly useful for complex testing scenarios and repetitive tests, ensuring consistency and saving time.
  5. Lightweight and Portable: Its design focuses on portability and ease of transport, making it ideal for field testing in various locations.
  6. Software Integration: Works seamlessly with Megger’s software solutions, enhancing its functionality with detailed test management and comprehensive reporting tools, which are essential for in-depth analysis and documentation.
  7. Precision Testing: Provides accurate and reliable test results, critical for ensuring the proper functioning of protective relays and schemes in the power distribution network.
  8. Durability: Built to withstand the rigors of field use with a robust construction that ensures long-term reliability and performance in various environmental conditions.

Smrt1 Megger Specifications:

  • Input Power:100 to 240 Volts (± 10%) AC, 1Ø, 50/60 Hz, 700 VA
  • Outputs:All outputs are independent from sudden changes in line voltage and frequency. This provides stable outputs not affected by sudden changes in the mains source. All outputs are regulated so changes in load impedance do not affect the output.
  • Output Current:Output power ratings are specified in AC rms values and peak power ratings
  • Current Amplifier – Extended Power Range:The SMRT current amplifier provides a unique flat power curve from 4 to 32 Amperes to permit testing of electromechanical high impedance relays, and other high burden applications, with an extended operating range up to 60 Amperes at 300 VA rms.
  • AC Voltage Output:Outputs are rated with the following Rang
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Megger since 1889 is a leading global premium manufacturer of measurement and testing technology. Megger top priority has always been to make your everyday work easier and safer. As such, insulation testers, micro-ohmmeters, and multimeters are among the long line of Megger inventions, making this brand one of the pioneers in the electrical industry. Megger products combine many years of experience and the valued feedback from our global users with the inventiveness and conscientiousness of our product developers. In Germany, we manufacture at three sites, Aachen, and Baunach near Bamberg and Radeburg near Dresden. Other manufacturing locations are based in Sweden, England, and America.



Data Sheet


Category Specification Details
Power Supply Input Power 100 to 240 V (± 10 %) AC, 1 Ø, 50/60 Hz, 700 VA
Outputs All outputs are independent of sudden changes in line voltage and frequency. Regulated to prevent effects of load impedance changes.
Output Current Specifications Various ranges and settings for AC RMS and peak power, details on current and voltage outputs across different settings.
Output Current Ranges 50 mA – 2 V 5 VA, 10.0 V RMS
1 A – 15 VA 15.0 V RMS
4 A – 200 VA (282 peak) 50.0 V RMS
AC/DC Outputs High Current Output Relays 1-4: AC up to 400 V, 8 amps; DC up to 300 V, 8 amps. Response Time: <10ms
High Speed Output Relays 5 and 6: 400 V peak, 1 amp. Response Time: <1ms typical
Environmental Temperature and Humidity Operating temperature: 0 to 50°C, Storage: -40 to +70°C, Humidity: 5-95% RH non-condensing
Compliance LVD Low Voltage Directive 2006/95/EC
EMC EMC Directive 2004/108/EC
Additional Capabilities Phase Angle, Frequency, Total Harmonic Distortion Phase Angle: 0.00 to 359.99 degrees, Frequency: 0.001 to 1000.000 Hz, THD: Less than 0.1% typical
Protection and Safety Output Protection Voltage outputs protected from shorts, thermally protected. Current outputs protected against open circuits.
Conformance Standards EN 61010-1, Shock: EN/IEC 60068-2-27, Vibration: EN/IEC 60068-2-6
Communication Interfaces Ethernet, Bluetooth (optional)
Measurement and Monitoring Metering with large, color TFT LCD touch screen. Measures AC/DC Amperes and Volts.