Megger SMRT46R Multi-Phase Relay Tester
The Megger SMRT46R is a portable relay test system for commissioning, maintenance and troubleshooting. It tests electromechanical, solid-state and microprocessor-based protective relays, as well as motor overload relays and similar protective devices.
With three VIGEN voltage/current modules, the SMRT46R provides four voltage channels and three current channels. Converting three voltage channels into additional current outputs provides one voltage and six current channels for applications such as three-phase transformer differential protection testing.
The SMRT46R is available with an integrated 25.7 cm colour touchscreen for manual, steady-state and dynamic testing without a separate computer. A version without a display is also available for users who prefer PC control. Megger’s Relay Test Management Software (RTMS) supports test setup, execution and reporting.
- Powerful current outputs: each main current channel delivers up to 32 A at 200 VA continuously, or 60 A at 319 VA for 1.5 seconds
- Flexible output configuration: supports three-phase relay testing and six-current differential testing, with different ratings for the main and converted current outputs
- Automatic range changing: changes output ranges under load, reducing interruptions during testing
- PowerV voltage amplifiers: provide a flat power curve from 30 to 150 V for demanding applications such as relay panel testing and older electromechanical distance relays
- Programmable binary inputs and outputs: support timing measurements, logic testing and circuit-breaker simulation
- Test result storage: display-equipped units can save results internally for later transfer to a USB drive
- RTMS Standard software included: supports manual and automatic testing from a PC and can be installed on multiple customer-owned computers
- Portable construction: a rugged metal enclosure supports transport between testing locations
Key specifications for the three-module configuration:
| Feature | Specification |
| Main AC current output, per channel | 32 A at 200 VA continuously; 60 A at 319 VA for 1.5 seconds |
| Voltage channel converted to AC current, per channel | 5 A at 150 VA continuously; 15 A at 120 VA for 1.5 seconds |
| Main voltage outputs | Three channels, each providing 0–300 V AC/DC |
| Auxiliary voltage channel | AC reference, synchronising or polarising output, or a DC battery simulator |
| DC battery simulator | Adjustable from 5–250 V DC, up to 100 W |
| Mains supply | 90–264 V AC, 50/60 Hz |
| Weight | 13.65 kg |
| Enclosure protection | IP30 |
Configure the SMRT46R for your testing requirements.
Optional hardware licences enable IEC 61850 GOOSE and IEC 61850 9-2 LE Sampled Values testing. RTMS Enhanced provides additional specialist functions, including COMTRADE playback. Synchronised end-to-end testing is supported with suitable external GPS or IRIG-B timing equipment.
Specify display option, test lead package, mains plug type and required software and hardware options when ordering. Transit cases are available separately.