Surge protective device with abnormal overvoltage protection
AssigneeHubbell Incorporated
InventorsMichael Bandel, Donald Huvaere
Life of this patent
Estimating the term…
Abstract
Surge protective devices having surge protective and overvoltage protection capability are provided. In one example embodiment, the surge protective device can include a surge protection circuit. The surge protection device can include an overvoltage protection circuit coupled in series with the surge protection circuit. The overvoltage protection circuit can include a voltage sensing circuit associated with a voltage threshold, one or more switching elements, and/or a gating circuit coupled to the voltage sensing circuit. The gating circuit can be configured to control the one or more switching elements to be in a non-conducting state when the voltage sensing circuit detects a voltage that exceeds the voltage threshold.
Claims18
A surge protection device, comprising:
- a surge protection circuit configured to receive power from a power source;
- and
- an overvoltage protection circuit configured to receive the power via the surge protection circuit, the overvoltage protection circuit comprising:
- a relay configured to selectively couple a load to the power source;
- and
- a first circuit section configured to control operation of the relay based on an overvoltage detection signal;
- and
- a second circuit section configured to provide the overvoltage detection signal,
- wherein when the first circuit section receives the overvoltage detection signal, the first circuit section is configured to control the relay to be in an open state such that the load is decoupled from the power source, and
- wherein when the first circuit section is not receiving the overvoltage detection signal, the relay is in a closed state such that the load is coupled to the power source via the relay.
A surge protection device for a lighting system, the surge protection device comprising:
- a surge protection circuit configured to receive power from a power source;
- and
- an overvoltage protection circuit configured to receive the power via the surge protection circuit, the overvoltage protection circuit comprising:
- a relay configured to selectively couple the lighting system to the power source;
- and
- a first circuit section configured to control operation of the relay based on an overvoltage detection signal;
- and
- a second circuit section configured to provide the overvoltage detection signal,
- wherein when the first circuit section receives the overvoltage detection signal, the first circuit section is configured to control the relay to be in an open state such that the lighting system is decoupled from the power source, and
- wherein when the first circuit section is not receiving the overvoltage detection signal, the relay is in a closed state such that the lighting system is coupled to the power source via the relay.
Dependencies are inferred from the claim text.