Megger SMRT1 and SMRT1D| SINGLE-PHASE RELAY TEST SYSTEM
- Small, rugged, lightweight, and powerful
- Operate with or without a computer
- Intuitive manual operation with Smart Touch View Interface (STVI)
- Built-in display (SMRT1D)
- High current, high power (75 Amps/400 VARMS)
- Network interface provides IEC 61850 test capabilities
- Fully automated testing using RTMS software
The SMRT1 single-phase relay test system and SMRT1D are standalone units that combines high compliance voltage with high current to test electromechanical, solid-state and microprocessor-based overcurrent relays, including voltage controlled, voltage restraint, and directional overcurrent. It can also test under/overvoltage, negative sequence under/overvoltage, single-phase impedance, single-phase power, directional, synchronising, auto-synchronising, current balance, frequency, volts/hertz, reclosing, thermal, and various other relays (see the Applications sections for more).
The SMRT1 can be manually controlled with Megger's new Smart Touch View Interface (STVI). The STVI is Megger's second generation of automatic/semi-automatic manual user interface software. 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. The SMRT1D has the STVI built into the unit.
For full automatic testing, the SMRT1 (or SMRT1D) 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.
For full automatic testing, the SMRT1 (or SMRT1D) 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.
The current channel is rated for 32 A at 200 VA continuous and up to60 A at 300 VA for short durations. It has a unique flat power curvefrom 4 to 32 A that always ensure maximum compliance voltage to theload. With a high compliance voltage of 50 V, the SMRT1/1D has thecapability to test high impedance overcurrent relays.
The voltage channel can provide a variable output of 0 - 30/150/300 Vat 150 VA of output power and has a unique flat power curve from 30to 150 V, always ensuring maximum output power to the load. Withthe voltage channel converted to current, it can perform minimumoperating point, slope, and timing on current differential relays,including harmonic restraint transformer differential relays (which canbe tested one phase at a time).
It is also designed to operate in conjunction with other SMRT familyunits. Using the Ethernet ports, SMRT1/1D is literally a "plug-and-play"unit, where voltage and current outputs can be seamlessly synchronizedwith other SMRT unit's voltage and current outputs for testing morecomplex relays such as three-phase directional power, distance, and lossof excitation, with up to 30 phase currents for testing bus differentialschemes.
