Surge protector
OwnerJack R. Harfordinventor
Life of this patent
Estimating the term…
Abstract
A surge protector for alternating current service includes at least an incoming hot line and a neutral line, but usually includes an incoming hot line, an incoming neutral line and a safety ground line. The surge protector has a series connected transformer with input connection to the incoming hot line, and connected in series to a non-linear surge suppression circuit, and therefore has a gross output connection to the non-linear surge suppression circuit, and a low impedance input to the secondary winding of the series connected transformer from the non-linear surge suppression circuit, and has a surge cancelled hot line output connection. The surge protector is for single or three phase service.
Claims20
A surge protector for an alternating current service, said service including at least an incoming hot line and an incoming neutral line, which comprises:
- (a.) a series connected transformer with input connection means for connection to said incoming hot line, and connected in series to a non-linear surge suppression circuit, and therefore having a gross output connection to said non linear surge suppression circuit, and further having a low impedance signal input to the secondary of the series connected transformer from said non-linear surge suppression circuit, and having a surge cancelled hot line output connection means;
- and,
- (b.) said non-linear surge suppression circuit having an input connection means from said neutral line, and being connected with said gross output connection means of said transformer, and having means for returning a suppressed surge signal to said transformer secondary, or tap and having a neutral line output connection means;
- wherein the non-linear surge suppression circuit limits the surge voltage at a voltage above the peak of the power wave voltage, and the series connected transformer senses the surge current and the transformer secondary supplies a signal of opposite phase to the incoming surge at the output after the clamping circuit, which effectively cancels the residual surge voltage, rendering the residual surge benign at the output.
A surge protector for an alternating current service, said service including at least an incoming hot line and an incoming neutral line and an incoming safety ground line, which comprises:
- (a.) a series connected transformer with input connection means for connection to said incoming hot line, and connected in series to a non-linear surge suppression circuit, and therefore having a gross output connection to said non linear surge suppression circuit, and further having a low impedance signal input to the secondary of the series connected transformer from said non-linear surge suppression circuit, and having a surge cancelled hot line output connection means;
- and,
- (b.) said non-linear surge suppression circuit having an input connection means from said incoming safety ground line, and being connected with said gross output connection means of said transformer, and having means for returning a suppressed surge signal to said transformer secondary, or tap and having an incoming safety ground line output connection means;
- wherein the non-linear surge suppression circuit limits the surge voltage at a voltage above the peak of the power wave voltage, and the series connected transformer senses the surge current and the transformer secondary supplies a signal of opposite phase to the incoming surge at the output after the clamping circuit, which effectively cancels the residual surge voltage, rendering the residual surge benign at the output.
Dependencies are inferred from the claim text.