Microcomputer-based relay protection tester is a new type of compact microcomputer relay protection tester fully utilizing modern microelectronic technology and devices. It can operate independently as a standalone unit or be connected to a laptop for operation. The main unit adopts a DSP+FPGA structure, with true 16-bit DAC output, built-in new modular high-fidelity linear high-power amplifier, and comes with an 8.4-inch TFT true-color display with a resolution of 800×600, as well as an industrial keyboard and mouse. Running on the Windows XP operating system, it is powerful, compact, and highly accurate. It combines the superior performance of large testers with the compact size, flexibility, ease of operation, and high reliability of small testers, offering excellent value for money. It is an indispensable tool for relay protection professionals.

Product Features

1. Meets all on-site testing requirements. This instrument features standard four-phase voltage and three-phase current output, with voltage at 125V per phase and current at 40A per phase. Three-phase parallel connection can achieve up to 120A. It can test both traditional relays and protection devices, as well as modern microcomputer-based protection systems, especially providing convenience for testing transformer differential protection and automatic transfer schemes.
2. All technical specifications fully comply with the standards of DL/T624-1997 "Technical Conditions for Microcomputer-Based Relay Protection Test Devices" issued by the Ministry of Electric Power.
3. Classic Windows XP operating interface with a user-friendly and intuitive human-machine interface, ensuring simple and fast operation. The high-performance embedded industrial control computer and 8.4-inch TFT true-color display with a resolution of 800×600 provide rich and intuitive information, including the current working status of the device and various help messages.
4. The built-in Windows XP system features a recovery function to prevent system crashes caused by shutdown or misoperation.

5. Equipped with an ultra-thin industrial keyboard and optical mouse, allowing operations to be performed just like on a regular PC via keyboard or mouse.
6. The main control board adopts a DSP+FPGA structure with 16-bit DAC output, generating a high-density sine wave of 2000 points per cycle for the fundamental wave, significantly improving waveform quality and enhancing the tester's accuracy.
7. The power amplifier uses a high-fidelity linear amplifier, ensuring both the accuracy of small currents and the stability of large currents.
8. USB interface for direct communication with a PC, eliminating the need for any adapters and ensuring ease of use.
9. Can be connected to a laptop (optional) for operation. The laptop uses the same software as the industrial computer, eliminating the need to relearn operating methods.
10. Includes an independent DC auxiliary voltage source output, providing voltages of 110V (1A) and 220V (0.6A), suitable for relays or protection devices requiring DC working power.
11. Features software self-calibration, avoiding the need to open the chassis and adjust potentiometers for calibration, thereby greatly enhancing accuracy stability.