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US 6,188,557 B1Granted
Surge suppressor
AssigneeTII Industries, Inc.
InventorNisar A. Chaudhry
Life of this patent
Estimating the term…
Abstract
Surge suppressor apparatus comprising AC power line overvoltage protection, telephone voice line overvoltage and overcurrent protection, high speed data line overvoltage and overcurrent protection and coaxial transmission line overvoltage protection, all tied to a common ground.
Claims14
AC overvoltage protection apparatus adapted to be connected to an AC power line, an AC neutral and a ground for protecting against overvoltage conditions appearing on the AC power line without the use of a trigger device, the apparatus comprising:
- (a) at least one MOV directly connected between the AC power line and the AC neutral, the MOV being normally non-conducting but becoming conducting when the voltage across the MOV exceeds a predetermined level;
- and
- (b) at least one gas discharge tube connected between the AC neutral and the ground, the gas discharge tube being normally non-conducting but becoming conducting when the voltage across the gas discharge tube exceeds a predetermined level, the gas discharge tube substantially eliminating leakage current through the MOV.
Dependencies are inferred from the claim text.