Surge protection element for telephone lines, or data transmissi

Details Surge protection element for telephone lines, or data transmissi Surge protection element for telephone lines, or data transmissi

1987-06-12

1988-03-01

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361120, H02H 900

Patent

active

047290552

ABSTRACT:
The surge protection element comprises an inert gas-filled protective device with electrodes inserted between two line input terminals, these terminals being connected respectively to branch terminals of an installation to be protected. The surge protection element also comprises initial protection apparatus, intended to be inserted between the terminals of the installation to be protected, and having a response time and a voltage threshold below that of said protective device, and also decoupling apparatus connected in series between the terminals of the protective device and those of the initial protection apparatus. The decoupling apparatus are capable of causing the voltage to rise at the terminals of the protective device when the current strength passing through the initial protection means increases, whereby the protective device can be tripped and can take over from the initial protection apparatus.

REFERENCES:
patent: 4262317 (1981-04-01), Baumbach
patent: 4314304 (1982-02-01), Baumbach
patent: 4424546 (1984-01-01), Smith
J.T.R. Japan Telecommunications Review, vol. 27, No. 1, Jan. 1985, pp. 30-33, Shunzo Morishita.

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