A method of measuring a fuse resistance includes steps as follows. A predetermined voltage value of a force voltage on a common ground (CGND) bus electrically connected to at least one fuse element, a first current value of a measured current through the CGND bus in a first condition, and a second current value of another measured current through the CGND bus in a second condition are preloaded. The second current value is subtracted from the first current value, so as to get a subtracted current value, thereby removing a value of a leakage current through the CGND bus. The predetermined voltage value is divided by the subtracted current value to equal the fuse resistance of the at least one fuse element.

A method of measuring a fuse resistance includes steps as follows. A predetermined voltage value of a force voltage on a common ground (CGND) bus electrically connected to at least one fuse element, a first current value of a measured current through the CGND bus in a first condition, and a second current value of another measured current through the CGND bus in a second condition are preloaded. The second current value is subtracted from the first current value, so as to get a subtracted current value, thereby removing a value of a leakage current through the CGND bus. The predetermined voltage value is divided by the subtracted current value to equal the fuse resistance of the at least one fuse element.

Communication enabled circuit breakers and circuit breaker panels are described. Methods associated with such communication enabled circuit breakers and circuit breaker panels are also described. A circuit breaker panel may include a circuit breaker controller and one or more communication enabled circuit breakers. Two-way wireless communication is possible between the circuit breaker controller and the one or more communication enabled circuit breakers.

Communication enabled circuit breakers and circuit breaker panels are described. Methods associated with such communication enabled circuit breakers and circuit breaker panels are also described. A circuit breaker panel may include a circuit breaker controller and one or more communication enabled circuit breakers. Two-way wireless communication is possible between the circuit breaker controller and the one or more communication enabled circuit breakers.

A plurality of fuses (F1, F2, . . . , and Fn) are respectively disposed on current paths for a plurality of currents branched from one end of a DC power source (10). In a blown fuse detection apparatus (11), ends on one side of a plurality of capacitors (C1, C2, . . . , Cn) are respectively connected to the ends on the downstream side of the plurality of fuses (F1, F2, . . . , and Fn). A plurality of currents that have flowed through the capacitors (C1, C2, . . . , Cn) are input to a circuit switch (30) and a circuit resistor (31). A microcomputer (37) instructs that the circuit switch (30) be switched on, obtains a detected value of a resistance voltage, and detects, based on the obtained detected value, whether or not there is a blown fuse among the fuses (F1, F2, . . . , and Fn).

A plurality of fuses (F1, F2, . . . , and Fn) are respectively disposed on current paths for a plurality of currents branched from one end of a DC power source (10). In a blown fuse detection apparatus (11), ends on one side of a plurality of capacitors (C1, C2, . . . , Cn) are respectively connected to the ends on the downstream side of the plurality of fuses (F1, F2, . . . , and Fn). A plurality of currents that have flowed through the capacitors (C1, C2, . . . , Cn) are input to a circuit switch (30) and a circuit resistor (31). A microcomputer (37) instructs that the circuit switch (30) be switched on, obtains a detected value of a resistance voltage, and detects, based on the obtained detected value, whether or not there is a blown fuse among the fuses (F1, F2, . . . , and Fn).

A semiconductor circuit and a semiconductor device for determining a status of a fuse element are provided. The semiconductor circuit includes a configurable reference resistor unit with a first terminal receiving a first power signal and a second terminal electrically coupled to the fuse element. The semiconductor circuit also includes a first switching circuit electrically connecting the configurable reference resistor unit and the fuse element and a latch circuit for reading an evaluation signal of a first node between the configurable reference resistor unit and the fuse element.

A semiconductor circuit and a semiconductor device for determining a status of a fuse element are provided. The semiconductor circuit includes a configurable reference resistor unit with a first terminal receiving a first power signal and a second terminal electrically coupled to the fuse element. The semiconductor circuit also includes a first switching circuit electrically connecting the configurable reference resistor unit and the fuse element and a latch circuit for reading an evaluation signal of a first node between the configurable reference resistor unit and the fuse element.

An electrical fuse maintenance system includes sensor adapted to measure the current flowing through a fuse element, the voltage on the fuse element, the temperature of the fuse element, and/or the temperature of an environment surrounding the fuse element, a controller configured to monitor the current, the voltage, the temperatures over a period of time while the fuse element is connected to an energized electrical power unit. Based on the monitored current, voltage and temperatures, the controller is adapted to estimate a service life remaining of the fuse element.

An electrical fuse maintenance system includes sensor adapted to measure the current flowing through a fuse element, the voltage on the fuse element, the temperature of the fuse element, and/or the temperature of an environment surrounding the fuse element, a controller configured to monitor the current, the voltage, the temperatures over a period of time while the fuse element is connected to an energized electrical power unit. Based on the monitored current, voltage and temperatures, the controller is adapted to estimate a service life remaining of the fuse element.