New distribution class arrester ground lead disconnector design enhances detonation reliability and improves arrester performance

This paper examines performance characteristics of existing distribution class arrester ground lead disconnecting devices. The paper also introduces a new distribution class ground lead disconnector design that not only extends the claimable detonation range well below the 20 amps specified in industry standards, but is very durable when exposed to severe arrester durability tests. Finally, this paper shows how this next generation disconnector interacts with the connected arrester to improve the overvoltage withstand capability of the arrester assembly.