Three-phase relay test system TRES

portablecompactautomatic

The TRES is a comprehensive, portable three-phase test system capable of testing all types of electromechanical and digital protective relays. Description With high power outputs packaged in an extremely compact and rugged system, the TRES has a tremendous power-to-weight ratio. The design incorporates the latest in modern digital microprocessor technology to achieve unbeatable output characteristics in terms of power, accuracy, low distortion, and dynamic capability. This hi-tech solution enables the testing of many different functions required in relay testing without the need of additional accessories. The system comprises 2 independent units, each with three independent output channels. Each output channel is reversible from Voltage to Current (in the Voltage unit) or from Current to Voltage (in the Current unit). Each output is controlled for Amplitude and Phase Angle and can be ‘linked’ into a Master-Slave coordinated sequence, with simulated ramp and dynamic changes. All output signals are digitally generated, amplified, and internally controlled by the IGM’s (Intelligent Generator Modules) which interpret the commands received from the front panel to produce a highly accurate and stable output with low distortion that is independent of the voltage supply.