SMRT36 is a new range of protective relay test sets in a compact and lightweight design delivering more output power than any other comparable three-phase relay test equipment.
Megger's fourth generation of automated relay test sets, the SMRT36 offers a unique constant power output, producing a compliance voltage of 50 V at up to 4 A (200 VA RMS), and maintains 200 VA output power up to 30 A.
Suitable for testing in modern installations as well as legacy plants, SMRT36 protective relay test sets incorporate patented developments from Megger’s previous models to produce an instrument that offers even greater precision, with reduced size and a weight of only 12kg.
The SMRT Power Box is specifically designed to test protective relays that are used in conjunction with CTs having 1 A and 5 A secondaries. It combines the capacity to simulate high current faults with the amplifier precision needed to satisfy some of the most demanding requirements.
Megger SMRT36 protective relay test sets come with three current output channels, plus three convertible channels that can be configured as either voltage or current outputs. This makes it possible, for example, to test numerical current differential relays that require six currents. The patented design allows it to deliver high power in both the voltage and current channels as needed in high-burden applications such as testing electromechanical relays.
Two current outputs in the relay test equipment can be series connected to double the compliance voltage to 100 V and provide a constant 400 VA output power at 4 A and up.
High constant power output is also available from the new PowerV voltage amplifiers to facilitate panel testing as well as the testing of high-burden electromechanical distance protection relays. From 30 V to 150 V, these deliver a constant 150 VA, providing high current output at ‘difficult’ low test voltages.
The new SMRT current amplifiers can deliver 30 A per phase continuous and up to 60 A per phase for short durations. For instantaneous over-current test applications, the SMRT36 can also provide up to 180 A at high power.
Megger’s SMRT36 protective relay test sets can be controlled manually with the optional Smart Touch View Interface (STVI) or via a laptop.