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The ramp test can test the operating value, return value, sensitive angle, operating time of various AC relays such as voltage, current, and power direction, as well as the memory time of impedance relays. It can test the operating value and return value of various DC relays such as DC voltage relays, DC current relays, and intermediate relays. Test the operating time of DC voltage relays, DC current relays, intermediate relays, and time relays and other DC relays. Test the operating value, return value, and operating time of a single conventional relay.

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The main features of the multifunctional microcomputer-based relay protection tester are as follows:

Classic Windows XP operating interface, friendly human-machine interface, simple and fast operation. To facilitate user use, a large number of keyboard shortcuts are defined, making operation "one-key到位"; high-performance embedded industrial control computer and 8.4-inch large-screen high-resolution color TFT LCD display can provide rich and intuitive information, including the current working status of the device, next-step work prompts, and various help information; equipped with an ultra-thin industrial keyboard and optical mouse, you can complete various operations through the keyboard or mouse just like operating a normal PC; equipped with an external USB interface for convenient data storage and software maintenance; without external devices, it can complete all project tests, automatically display and record test data, and complete vector diagrams and characteristic curve drawing; using a high-performance D/A converter, the generated waveform has high precision, good linearity, and good transient response and amplitude-frequency characteristics. Waveform accuracy and other indicators can be guaranteed throughout the entire measurement range; using a unique algorithm, the generated waveform is precise, completely different from the curve-fitting waveform generation method, ensuring the signal is a pure sine wave; can directly output AC voltage, AC current, DC voltage, DC current, with variable amplitude, phase, frequency, and 2 to 20 harmonics; the power amplification part 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 30A. When the output current reaches 30A, the waveform can still be guaranteed without distortion or peak clipping; it has 16 open-input inputs and 8 pairs of dry contact output interfaces. The open-input interface 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; provides various automatic test software modules and GPS synchronous trigger test (optional), etc.; GPS synchronous trigger error is less than 50μS; 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.; using a carefully designed chassis structure, small size, good heat dissipation, light weight, easy to carry, convenient for mobile testing; the instrument has self-protection function, adopts a reasonably designed heat dissipation structure, and has reliable and complete multiple protection measures and power soft start, as well as certain fault self-diagnosis and blocking functions.