1 Main Technical Features
Microcomputer relay protection test set Its main features are as follows:
l Classic Windows XP operating interface, user-friendly, simple and fast operation. To facilitate user use, a large number of keyboard shortcuts are defined, making operation "one-key to the point";
l High-performance embedded industrial control computer and 8.4-inch large-screen high-resolution color TFT LCD display provide rich and intuitive information, including the current working status of the device, next-step operation prompts, and various help information;
l Equipped with an ultra-thin industrial keyboard and optical mouse, all operations can be completed via keyboard or mouse just like operating a regular PC;
l Equipped with an external USB interface for convenient data storage and software maintenance;
l All test items can be completed without external devices, with automatic display and recording of test data, and drawing of vector diagrams and characteristic curves;
l High-performance D/A converter is adopted, producing waveforms with high precision, good linearity, and excellent transient response and amplitude-frequency characteristics. Waveform accuracy and other specifications are guaranteed throughout the entire measurement range;
l Unique algorithm is used to generate precise waveforms, completely different from curve-fitting waveform generation methods, ensuring pure sine wave signals;
l Can directly output AC voltage, AC current, DC voltage, DC current, with variable amplitude, phase, frequency, and 2 to 40 harmonics;
l The power amplifier section adopts a new type of high-power, high-fidelity linear power amplifier circuit, with large output power and low ripple interference. Each phase voltage can output 120V, and current can output 40A. When the output current reaches 40A, the output power can exceed 450VA per phase, and the waveform remains undistorted and unclipped;
l In addition to traditional Ua, Ub, Uc, Ia, Ib, Ic, a fourth voltage Ux output is provided. Ux can be used for multiple functions, such as outputting various 3Uo, or outputting the synchronization voltage of the line during line protection tests;
l It has 8 binary input interfaces and 4 pairs of dry contact output interfaces. The binary input interfaces can automatically adapt to passive (dry contact) and active inputs, and can automatically adapt to the polarity of active inputs, working normally within the input voltage range of ±250V;
l Provides various automatic test software modules and GPS synchronous trigger test (optional);
l GPS synchronous trigger error is less than 50μS;
l Can complete various complex calibration tasks, conveniently test and scan various protection settings, and perform fault replay. It can store test data in real time, display vector diagrams, print reports, etc.;
l Carefully designed chassis structure, small size, good heat dissipation, light weight, easy to carry, convenient for mobile testing;
l The instrument has self-protection functions, adopts a reasonably designed heat dissipation structure, and has reliable and complete multiple protection measures, power soft start, and certain fault self-diagnosis and blocking functions.
