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In 1919, Hi-Voltage
Equipment Company was founded in Cleveland, Ohio. The
company was formed to manufacture products, primarily isolating switches,
for the electric utility market. During the 1950's, the Hi-Voltage
Equipment Company was acquired by Joslyn Corporation and became the
Joslyn Hi-Voltage Equipment Division. During this period, Joslyn
Hi-Voltage established a leading position in the industry, with research,
development and commercialization of vacuum interrupter technology.
The commercial introduction of vacuum technology provided a cost effective
alternative to circuit breakers in applications with frequent switching
duty. During this period, Joslyn Hi-Voltage products were used primarily
in substation applications.
In the 1970's, Joslyn
Hi-Voltage expanded its product offering dramatically, introducing advanced
control technology that was used in conjunction with the highly reliable,
low maintenance switch designs, to improve distribution system reliability.
These advanced controls enabled remote operation in conjunction with
distribution automation (DA) and SCADA systems. Joslyn
Hi-Voltage was the first company to fully integrate a distribution automation
control package, including the switch control, RTU, and radio in one
cabinet with one power supply. Also introduced were controls
with local intelligence for isolating faulted feeder sections quickly,
restoring power to unfaulted sections.
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