Procurement personnel often encounter a specific problem during actual acceptance or preventive testing: for the same zinc oxide arrester, the resistive current measured by different instruments differs significantly, sometimes by more than 10%, leading to disagreements in judging equipment status. The problem often lies in the uncontrollable voltage rise rate—when the voltage is raised too quickly, the arrester valve discs have not yet reached thermal stability, and the total current and resistive current readings will be too high, resulting in poor repeatability.
The KDX-9800 zinc oxide arrester tester sets the voltage rise rate as an adjustable parameter. Users can set the voltage rise speed according to the test object capacity and on-site conditions, making the test process stable and the readings steady. The instrument can measure the total current, resistive current, harmonic current, capacitive current, and active power of zinc oxide arresters, basically covering the common items in zinc oxide arrester characteristic testing.
The test accuracy meets the requirements of on-site preventive testing, and the operation interface is arranged according to the test process to reduce parameter setting errors. The grounding resistance measurement function is set independently, making it convenient to quickly complete the grounding loop check. When selecting for procurement, attention can be paid to whether the voltage rise rate adjustment range, current measurement range, and resolution cover the arrester models under management, and whether on-site printing or data export is supported.
Suitable for routine testing and handover acceptance of zinc oxide arresters in substations, power plants, and industrial power distribution systems, and also suitable for testing parameters related to varistors. The instrument's size and power supply method are suitable for on-site mobile operation, providing procurement personnel with a repeatable and traceable testing method.
