Development and Application of Live-Working Low-Voltage AC Surge Arresters
Low-voltage zinc oxide surge arresters installed in distribution transformer protection switch boxes and distribution cabinets are difficult to diagnose or replace after breakdown or damage,as the fault points are hard to detect and live-working replacement is not possible.To address this,a new type of live-working low-voltage AC surge arrester has been designed.This design incorporates a modular design approach,a live-working replace-ment plan,and an automatic fault isolation indicator to localize the fault.The solution enables modular replace-ment of faulty arresters,live-working operations that avoid power outages in the distribution area,and isolation of faulty phases to eliminate safety hazards.The product has successfully passed type testing and has been in opera-tion for over five years,delivering significant benefits and results.
low-voltage AC surge arresterlive-working operationfault isolationfault indication
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