A surge protective device (SPD) assembly includes a base and an SPD module configured to be mounted on the base. The SPD module includes an SPD module PCB, an SPD module circuit, and a thermal disconnector mechanism. The SPD module circuit is at least partly embodied in the SPD module PCB and includes an overvoltage protection component mounted on the SPD module PCB. The thermal disconnector mechanism is mounted on the SPD module PCB in a ready configuration. The thermal disconnector mechanism is operative to transition from the ready configuration to an actuated configuration responsive to sufficient overheating of the overvoltage protection component. When the thermal disconnector mechanism is positioned in the ready configuration, the SPD circuit forms a first current path through the overvoltage protection component. When the thermal disconnector mechanism is positioned in the actuated configuration, the thermal disconnector mechanism forms an alternate second current path that bypasses the overvoltage protection component.
H02H 5/04 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
A surge protective device (SPD) module includes first, second and third terminals, a node connected to the third terminal, a varistor stack, a first branch, and a second branch. The varistor stack assembly includes a first varistor, a second varistor, and a node electrode interposed between the first and second varistors. The node electrode is electrically connected to the first and second varistors and includes the node. The first branch includes the first varistor connected between the first terminal and the node, and a first thermal disconnector mechanism configured to disconnect the first varistor from the first terminal or the node. The second branch includes the second varistor connected between the second terminal and the node, and a second thermal disconnector mechanism configured to disconnect the second varistor from the second terminal or the node.
H02H 9/04 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
3.
SURGE PROTECTION DEVICE INCLUDING MULTIPLE VARISTOR WAFERS WITH COORDINATED ELECTRICAL CHARACTERISTICS TO REDUCE CURRENT IMBALANCE DURING RESPONSE TO OVERVOLTAGE EVENTS
A surge protection device (SPD) module includes: a housing; a plurality of metal oxide varistor (MOV) wafers, respective ones of the plurality of MOV wafers having electrical characteristics that reduce an imbalance in current between the respective ones of the plurality of MOV wafers in response to an overvoltage event; and one or more electrodes, the plurality of MOV wafers and the one or more electrodes being alternately arranged in the housing.
A surge protective device (SPD) module includes first, second and third terminals, a node connected to the third terminal, a varistor stack, a first branch, and a second branch. The varistor stack assembly includes a first varistor, a second varistor, and a node electrode interposed between the first and second varistors. The node electrode is electrically connected to the first and second varistors and includes the node. The first branch includes the first varistor connected between the first terminal and the node, and a first thermal disconnector mechanism configured to disconnect the first varistor from the first terminal or the node. The second branch includes the second varistor connected between the second terminal and the node, and a second thermal disconnector mechanism configured to disconnect the second varistor from the second terminal or the node.
A surge protective electrical installation includes an enclosure, a set of elongate busbars, and a surge protective device (SPD) assembly. The enclosure includes a front cover. The front cover includes an access opening defined therein. The set of elongate busbars is disposed in the enclosure behind the front cover and has a busbar longitudinal axis. The SPD assembly includes a base module and an SPDS module. The base module is mounted on the busbars to mechanically and electrically connects the base module to the busbars. The base module includes a first lateral section and a second lateral section. The SPD module is removably mounted on the second lateral section of the base module. The SPD module includes an overvoltage clamping element. The front cover is selectively positionable in each of an open position and a closed position. When the front cover is in the closed position, the first lateral section of the base module is covered by the front cover, and the SPD module is not covered by the front cover so that the SPD module is exposed through or projects through the access opening. When the front cover is in the open position, the first lateral section of the base module is not covered by the front cover.
A surge protective device (SPD) assembly includes a base and an SPD module configured to be mounted on the base. The SPD module includes an SPD module PCB, an SPD module circuit, and a thermal disconnector mechanism. The SPD module circuit is at least partly embodied in the SPD module PCB and includes an overvoltage protection component mounted on the SPD module PCB. The thermal disconnector mechanism is mounted on the SPD module PCB in a ready configuration. The thermal disconnector mechanism is operative to transition from the ready configuration to an actuated configuration responsive to sufficient overheating of the overvoltage protection component. When the thermal disconnector mechanism is positioned in the ready configuration, the SPD circuit forms a first current path through the overvoltage protection component. When the thermal disconnector mechanism is positioned in the actuated configuration, the thermal disconnector mechanism forms an alternate second current path that bypasses the overvoltage protection component.
H02H 5/04 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
A surge protective device includes an overvoltage protection circuit and a control module coupled to the overvoltage protection circuit that is configured to monitor at least one performance characteristic of the overvoltage protection circuit and is further configured to communicate the at least one performance characteristic to a destination external to the surge protective device.
H02H 9/04 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
H02H 1/00 - Details of emergency protective circuit arrangements
H02H 9/06 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
8.
PCB-mountable surge protective device modules and SPD circuit systems and methods including same
A surge protective device (SPD) circuit system for providing overvoltage protection to an electrical power circuit includes a PCB assembly, an SPD module, and an SPD monitoring system. The PCB assembly selectively mountable on the PCB includes a PCB and a remote signal (RS) PCB contact on the PCB. The SPD module includes an overvoltage clamping element and an RS spring contact including an RS contact portion. When the SPD module is mounted on the PCB and the electrical power circuit is connected to the PCB: the PCB electrically connects the SPD module to the circuit and the overvoltage clamping element provides overvoltage protection to the circuit; the RS contact portion engages the RS PCB contact; the RS spring contact is elastically deflected and persistently loads the RS contact portion against the RS PCB contact; and the RS spring contact is electrically connected to the SPD monitoring system via the RS PCB contact.
A wireless communication equipment installation for wireless communication equipment includes a 5G New Radio (NR) antenna and a shroud member. The 5G NR antenna includes a radiating element configured to transmit radio signals at frequencies greater than 24 GHz. The shroud member comprises a polyvinyl chloride (PVC) substrate. The radiating element is configured to emit and receive radio signals through the shroud member.
A wireless communication equipment installation for wireless communication equipment includes a 5G New Radio (NR) antenna and a shroud member. The 5G NR antenna includes a radiating element configured to transmit radio signals at frequencies greater than 24 GHz. The shroud member comprises a polyvinyl chloride (PVC) substrate. The radiating element is configured to emit and receive radio signals through the shroud member.
A surge protective device (SPD) module includes a module housing, first and second module electrical terminals mounted on the module housing, an overvoltage clamping element electrically connected between the first and second module electrical terminals, and a thermal disconnector mechanism. The thermal disconnector mechanism is positioned in a ready configuration, wherein the overvoltage clamping element is electrically connected with the second module electrical terminal. The thermal disconnector mechanism is repositionable to electrically disconnect the overvoltage clamping element from the second module electrical terminal. The thermal disconnector mechanism includes: an electrode electrically connected to the overvoltage clamping element; a disconnect spring elastically deflected and electrically connected to the electrode in the ready configuration; a solder securing the disconnect spring in electrical connection with the electrode in the ready configuration; and a heat sink member thermally interposed between the electrode and the solder, the heat sink member having a thermal capacity. The solder is meltable in response to overheating of the overvoltage clamping element. The disconnect spring is configured to electrically disconnect the overvoltage clamping element from the second module electrical terminal when the solder is melted. The thermal capacity of the heat sink member buffers and dissipates heat from the overvoltage clamping element to prevent the solder from melting in response to at least some surge currents through the SPD module.
H01H 85/02 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive Details
H01H 37/76 - Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
H01H 85/04 - Fuses, i.e. expendable parts of the protective device, e.g. cartridges
H01H 85/20 - Bases for supporting the fuseSeparate parts thereof
A surge protective device (SPD) module includes a varistor and an electrical conductor. The varistor includes a hole defined therein and extending through the varistor. The electrical conductor extends through the hole in the varistor.
H01C 7/102 - Varistor boundary, e.g. surface layers
H01H 37/76 - Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
H01T 1/14 - Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure
H01H 83/10 - Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess voltage, e.g. for lightning protection
H01F 27/30 - Fastening or clamping coils, windings, or parts thereof togetherFastening or mounting coils or windings on core, casing, or other support
H01F 27/32 - Insulating of coils, windings, or parts thereof
H02H 7/00 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
H02J 3/12 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
15.
Surge protective device modules including integral thermal disconnect mechanisms and methods including same
A surge protective device (SPD) module includes a module housing, first and second module electrical terminals mounted on the module housing, an overvoltage clamping element electrically connected between the first and second module electrical terminals, and a thermal disconnector mechanism. The thermal disconnector mechanism is positioned in a ready configuration, wherein the overvoltage clamping element is electrically connected with the second module electrical terminal. The thermal disconnector mechanism is repositionable to electrically disconnect the overvoltage clamping element from the second module electrical terminal. The thermal disconnector mechanism includes: an electrode electrically connected to the overvoltage clamping element; a disconnect spring elastically deflected and electrically connected to the electrode in the ready configuration; a solder securing the disconnect spring in electrical connection with the electrode in the ready configuration; and a heat sink member thermally interposed between the electrode and the solder, the heat sink member having a thermal capacity. The solder is meltable in response to overheating of the overvoltage clamping element. The disconnect spring is configured to electrically disconnect the overvoltage clamping element from the second module electrical terminal when the solder is melted. The thermal capacity of the heat sink member buffers and dissipates heat from the overvoltage clamping element to prevent the solder from melting in response to at least some surge currents through the SPD module.
H01H 37/76 - Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
H01H 85/02 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive Details
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