Glass power network isolator “Niemen”

The power isolator is an object used in power engineering for supporting and insulating electrical conductors, in this case power transmission lines. Traditionally, products of this kind are made of glass or electrical engineering porcelain, but now silicone rubber isolators are used more and more frequently as they are about 20% cheaper than their classic counterparts, weigh less, and are more resistant to mechanical damage. The item presented here was produced by the most famous Polish utility and decorative glass factory in the inter-war period – Huty Szklane Juliusza Stolle Niemen SA. The glassworks were established by Wilhelm Krajewski and Juliusz Stolle in 1891, near Novogrudok. The isolator presented here is a model produced until the 1930s, with a very characteristic shape with a slanted top part. The isolators were produced in three sizes. Manufacturer: J. Stolle „Niemen” glassworks, 1930 Inv. No.: MIM1384/IV-56 Model prepared on the basis of photogrammetric measurements. Licence: CC BY-NC-SA