The microcomputer relay protection tester, often referred to as a "relay protection instrument" or "relay protection calibration instrument," is the "general practitioner" in the power system. It is mainly used for debugging, calibrating, and fault analysis of various relay protection devices in substations and power plants, ensuring that these "grid guardians" can act accurately and swiftly when faults occur.



As the core equipment for power maintenance and scientific research, it has replaced the early bulky and low-precision combinations of voltage regulators and phase shifters.

⚙️ Core Function: Why Use It?

Relay protection devices are the "first line of defense" of the power grid, and their reliability is crucial. The function of the microcomputer relay protection tester is to simulate various normal and fault conditions that may occur in the power grid (such as short circuits, overloads, frequency fluctuations, etc.) to verify whether the action logic, setting accuracy, and response time of the protection devices are correct.

Pre-commissioning debugging: Newly installed protection devices must undergo comprehensive testing before being put into operation.

Periodic inspection: Periodically calibrate the devices in operation according to regulations to ensure their performance is stable.

Fault analysis: When a protection device malfunctions or fails to operate, the tester can be used to reproduce the fault and find the cause.