In on-site preventive testing, zinc oxide arrester testing is often inefficient due to cumbersome reference voltage sampling. Traditional methods require wiring from the PT secondary side, with long cable runs susceptible to interference, leading to repeated testing.
Arrester testing requires synchronized acquisition of a voltage reference. Conventional methods require running test leads from the PT secondary side to the arrester location, resulting in long wiring distances, easy introduction of interference, and frequent connection/disconnection increasing the risk of misoperation. Procurement personnel should pay attention to whether the equipment supports a convenient method of obtaining the voltage reference.
The YHX-9900 Zinc Oxide Arrester Tester adopts induction plate synchronization technology, requiring no wiring; it obtains the voltage reference by sensing the B-phase electric field, simplifying the operation process. The test leads use a shielded coaxial structure. During on-site wiring, only the reference voltage clamp needs to be connected to the PT secondary side, and the current terminal connected in series with the arrester grounding circuit, reducing wiring complexity.
The equipment's test accuracy meets the requirements of on-site preventive testing. The operation interface is arranged according to the test process, reducing parameter setting errors. Daily maintenance requires keeping the induction plate clean and avoiding obstruction of the electric field; the shielding layer of the test leads should be checked regularly to ensure reliable grounding. Avoid humid environments during storage, and power on periodically for inspection during long-term disuse.
