The working principle of the relay protection tester is mainly based on microelectronics technology and modern advanced digital signal processing technology, utilizing a built-in high-speed digital signal processor microcomputer, DAC module, and high-fidelity power amplifier to test microcomputer relay protection equipment. 12

Basic Composition and Operating Method of Relay Protection Test Instruments

Hardware Composition: Relay protection testers typically include a high-speed digital signal processor microcomputer, a true 16-bit DAC module, a new modular high-fidelity high-power amplifier, as well as a large-screen LCD display and a rotary mouse controller.

‌Operating Modes: The tester can operate independently on a standalone basis or connected to a laptop, offering a variety of testing functions such as voltage, current, frequency, power, impedance, harmonics, differential, and synchronous relay testing.

Relay Protection Tester - Test Objects and Application Fields

‌Test Object: Relay Protection Test Instruments, primarily used for testing microcomputer relay protection equipment, including but not limited to line protection, main transformer differential protection, excitation control, etc.

‌Application Areas: Widely used in electrical manufacturing and power operation departments, ensuring the safe and reliable operation of the power system.

Technical Trends in Relay Protection Testers

‌Technological Development: With the rapid advancement of computer technology, microelectronics, and power electronics, new high-performance microcomputer relay protection testing devices are continuously introduced. Utilizing digital power amplification, these devices are characterized by their small size, light weight, and high efficiency, representing the development trend for relay protection testers.

‌Feature Highlights: The new relay protection tester features automatic scanning of microcomputers and digital transformers, differential protection ratio brake curves for generators and transformers, and advanced functions such as GPS triggering.

In summary, the relay protection tester, through its advanced hardware configuration and software functions, achieves testing of microcomputer relay protection equipment, ensuring the safe and stable operation of the power system, and continues to optimize and develop with technological advancements.