A damper inspection system for a heating, ventilating, and air conditioning (HVAC) system includes a fuse link sensor configured to couple to a damper. The fuse link sensor includes a first contact and a second contact. The fuse link sensor is configured to transition between an engaged configuration in which the first contact is electrically coupled to the second contact and a disengaged configuration in which the first contact is electrically decoupled from the second contact. The damper inspection system includes a remote controller that includes control circuitry configured to electrically couple to the first contact and the second contact and to determine an operational status of a fuse link of the damper based on an electrical continuity between the first contact and the second contact.

A damper inspection system for a heating, ventilating, and air conditioning (HVAC) system includes a fuse link sensor configured to couple to a damper. The fuse link sensor includes a first contact and a second contact. The fuse link sensor is configured to transition between an engaged configuration in which the first contact is electrically coupled to the second contact and a disengaged configuration in which the first contact is electrically decoupled from the second contact. The damper inspection system includes a remote controller that includes control circuitry configured to electrically couple to the first contact and the second contact and to determine an operational status of a fuse link of the damper based on an electrical continuity between the first contact and the second contact.

A back end of the line (BEOL) fuse structure having a stack of vias. The stacking of vias leads to high aspect ratios making liner and seed coverage inside the vias poorer. The weakness of the liner and seed layers leads to a higher probability of electromigration (EM) failure. The fuse structure addresses failures due to poor liner and seed coverage. Design features permit determining where failures occur, determining the extent of the damaged region after fuse programming and preventing further propagation of the damaged dielectric region.

System and methods for estimating a state if a fuse are presented. In some embodiments, the disclosed systems and methods may be utilized in connection with estimating a state of a fuse associated with a manual service disconnect associated with an energy storage system included in a vehicle. Consistent with embodiments disclosed herein, a current event counting-based method utilizing one or more weighted time data buckets associated with various current levels may be used in connection with estimating MSD fuse life. In some embodiments, a MSD fuse end-of-service life signal may be triggered when a total time associated in the weighted time data buckets exceed a threshold value.

A method is for protecting an electrical architecture including a protective device provided with a protective fuse capable of melting in a deteriorated mode of operation during which a breaking current having an amperage greater than a threshold is flowing through the architecture. The method includes, in a nominal mode of operation, periodically estimating a temperature of the fuse and controlling an amperage of a useful current flowing through the fuse such that the estimated temperature remains below a melting temperature of the fuse.

Electrical current sensing and monitoring methods include connecting sensing a voltage across a conductor having a non-linear resistance such as a fuse element. The current flowing in the conductor is calculated based on at least a first detected state of the sensed voltage and a thermal equilibrium characterization of the conductor.

In management device (10) for managing power storage device (20) in which a plurality of power storage blocks (B1 to B3) in which a plurality of series circuits of fuses and power storage cells is connected in parallel is connected in series, equalization controller 15 performs, when a voltage difference among the power storage blocks exceeds a set voltage difference, a control for equalizing power storage blocks (B1 to B3). Fuse blowout determination unit 18 determines, based on a frequency of equalization performed by equalization controller 15, whether one of the fuses is blown.

Systems and methods for detecting thermal-mechanical strain fatigue in an electrical fuse include a controller configured to monitor at least one fuse fatigue parameter over a period of time while the fuse is connected to an energized electrical power system, and based on the monitored at least one fuse fatigue parameter, the controller is further configured to determine at least one of a consumed service life of the fuse element or a service life remaining of the fuse element.

A combination test device including detection circuitry, outlet tester circuitry, and a single housing. The detection circuitry is configured to wirelessly detect a voltage. The outlet tester circuitry electrically is configured to perform a plurality of electrical outlet testing functions. The single housing has a first end, a second end opposite the first end, and an enclosure between the first end and the second end. The enclosure encloses the detection circuitry positioned at the first end and encloses the outlet tester circuitry positioned at the second end.