The lightning counter calibration device directly acts on the discharge counter of the arrester



The lightning counter calibration device (also known as the arrester discharge counter tester) is a portable device specially used for on-site testing in power systems. Its core function is to verify whether the "lightning counter" on the arrester can operate normally by simulating real lightning current, thereby ensuring that the arrester can accurately record the number of strikes after being hit by lightning, providing reliable evidence for the maintenance and condition assessment of power equipment.

The following is a detailed introduction to the core principles, functions, and technical features of this type of instrument:

⚡ Core Working Principle

The core principle of the lightning counter calibration device is to simulate lightning strikes. It generates a standard impulse current pulse (usually with an 8/20μs waveform and a peak current greater than 100A) through its internal circuit, which directly acts on the discharge counter of the arrester. If the counter can accurately count once after being subjected to this simulated current impulse, it indicates that its mechanical and electrical performance is intact; otherwise, it indicates that the counter may have failed due to moisture, corrosion, or component aging, and needs to be repaired or replaced.