Introduction To Relay Protection Tester

The relay protection tester adopts a high-speed high-performance digital signal processor with fast calculation speed and wide transmission frequency range. It can generate a high-density fitting sine wave with 360 points per cycle for the fundamental wave. This is the highest level among similar output methods. The waveform has high fidelity and little distortion, especially when outputting harmonics, even for the 6th harmonic, 300Hz can achieve a high density of 60 points of D/A per cycle.
It is a new type of intelligent testing instrument. The previous tools were mainly composed of voltage regulators and phase shifters. The volume is bulky and the accuracy is not high. It can no longer meet the calibration work of modern microcomputer relay protection. With the continuous development of science and technology, it has been widely used in various fields such as line protection, main transformer differential protection, excitation control, etc. The comprehensive automation of substations has become the mainstream.