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US 6,646,839 B2Granted
Surge suppressor
AssigneeTII Industries, Inc.
InventorsNisar A. Chaudhry, Alfred J. Roach
Life of this patent
Estimating the term…
Abstract
An improved surge suppressor which combines a ground fault circuit interrupter with overvoltage protection for AC power lines. The surge suppressor includes a switchable device for disconnecting power from the ground fault circuit interrupter in the event the AC neutral is lost.
Claims12
Combination ground fault circuit interrupter/surge suppressor apparatus adapted to be connected to AC line, AC neutral and ground comprising:
- (a) an AC overvoltage protection circuit connected between the AC line and the AC neutral;
- (b) a switchable device having an input and an output, the input being connected to the AC line and the AC neutral, the device allowing power to pass from the input to the output when the AC neutral is present but preventing power from passing from the input to the output when the AC neutral is absent;
- and
- (c) a ground fault circuit interrupter connected to the output of the switchable device and to ground.
1 more element
Combination ground fault circuit interrupter/surge suppressor apparatus adapted to be connected to AC line, AC neutral and ground comprising:
- (a) a first AC overvoltage protection circuit connected between the AC line and the AC neutral;
- (b) a second AC overvoltage protection circuit connected between the AC line and ground;
- (c) a third AC overvoltage protection circuit connected between the AC neutral and ground;
- (d) a switchable device having an input and an output, the input being connected to the AC line and the AC neutral, the device allowing power to pass from the input to the output when the AC neutral is present but preventing power from passing from the input to the output when the AC neutral is absent;
- and
- (e) a ground fault circuit interrupter connected to the output of the switchable device and to ground.
3 more elements
Dependencies are inferred from the claim text.