Type IVS Autovalve Lightning Arrester Unit 12KV Westinghouse
This Type IVS 12KV lightning arrester is style no. 632A161AO1. This unit was salvaged from a commercial building in Duluth Minnesota, I am assumming this unit is still operable and could be put back into service if desired or add it to your collection for the ultimate insulator. This unit has minor scratches and blemishes, a mounting bolt hole on the base has a slot intentionally cut into it, (this doesn't appear to be any real issue), but overall it is in good condition. This Giant insulator is heavy and stands 24.5" tall with a 7.5" in diameter on the ceramic portion.
The following information was obtained from a Westinghouse Corporation PDF brochure found online. I am not an electrician and cannot answer any technical questions regarding this item.
Type IVS Autovalve Lightning Arresters are intermediate arrestors for the economical protection of power apparatus in small and medium size substations. This arrestor affords low discharge characteristics as well as low and consistent impulse sparkover to provide, maximum protection to electrical apparatus. The Type IVS meets all AIEE, ASA, and NEMA Standards for intermediate type arrestors; and offers other improvements such as low and high current pressure relief for both indoor or outdoor service.
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Building/Construction.
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