Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1997-03-20
1998-09-15
Leja, Ronald W.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
361120, H02H 100
Patent
active
058088490
ABSTRACT:
A method for the protection of in particular telecommunication installations against overvoltage and overcurrent by overvoltage arresters, PTC resistors and voltage-limiting components and to a protection circuit for carrying-out the method. The object of the invention, namely to develop a method and a circuit in particular for the protection of telecommunication installations against overvoltage and overcurrent that secures a surge-current resistant and reversible line protection, is achieved by the response voltage of the overvoltage arrester being higher than the peak value of a powersupply voltage, and that the response voltage of the thyristor diodes selected being slightly above the maximum operating voltage values of the line to be protected. The PTC resistors are used as a decoupling member to block the maximum amplitudes of the power supply voltage.
REFERENCES:
patent: 4586104 (1986-04-01), Standler
patent: 4758920 (1988-07-01), McCartney
patent: 4907120 (1990-03-01), Maczmarek et al.
patent: 4964160 (1990-10-01), Traube et al.
patent: 5677820 (1997-10-01), Pelegris
Krone Aktiengesellschaft
Leja Ronald W.
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