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 computer 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 and 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 small size, flexibility, ease of operation, and high reliability of compact 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 of 125V per phase and current of 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 user-friendly human-machine interface, making operation simple and fast; 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 information.

4. The built-in Windows XP system has a recovery function to avoid system crashes caused by shutdown or misoperation.
5. Equipped with an ultra-thin industrial keyboard and optical mouse, allowing various operations to be performed via keyboard or mouse just like on a regular PC.
6. The main control board uses a DSP+FPGA structure with 16-bit DAC output, generating a high-density sine wave of 2000 points per cycle for the fundamental wave, greatly improving waveform quality and the accuracy of the tester.
7. The power amplifier uses a high-fidelity linear amplifier, ensuring both the accuracy of small currents and the stability of large currents.

8. Uses a USB interface for direct communication with a PC, without the need for any adapter cables, making it convenient to use.
9. Can be connected to a laptop computer (optional) for operation. The laptop uses the same software as the industrial computer, eliminating the need to relearn operating methods.
10. Equipped with an independent DC auxiliary voltage source output, providing voltages of 110V (1A) and 220V (0.6A), for use with relays or protection devices that require DC working power.
11. Features software self-calibration function, avoiding the need to open the chassis and adjust potentiometers for calibration, thereby greatly improving the stability of accuracy.