摘要:
A circuit-interrupting system for interrupting an electrical current to a device is provided including a relay assembly configured to be operable in a closed state when a sensed temperature is below a predetermined threshold, thereby maintaining electrical current to the device, and an open state when the sensed temperature is above the predetermined threshold, thereby interrupting the electrical current to the device. A heater element is provided proximal to said relay assembly and configured to activate at least the open state of the relay assembly. At least one sensor in electrical communication with the heater element is provided disposed remote from the relay assembly and being configured for sensing temperatures, wherein when the sensed temperature at said at least one sensor is above the predetermined threshold, the at least one sensor is configured to cause the heater element to activate the open state of the relay assembly.
摘要:
Die Erfindung betrifft eine Vorrichtung (1), zum Schutz eines Verbrauchers (2), wobei die Vorrichtung (1) eine erste Strombahn (100), welche eine erste und eine zweite Leitung (101, 102) umfasst, und eine Überwachungseinrichtung, zur Ermittlung einer anstehenden Überlast des elektrischen Verbrauchers (2), umfasst. Um eine thermisch und elektrisch optimierte, verbesserte und kostengünstige Vorrichtung (1) bereitzustellen, mit welcher eine Ermittlung einer anstehenden Überlast eines Verbrauchers erfolgen kann, wird vorgeschlagen, dass die Überwachungseinrichtung eine erste Temperaturmesseinheit (18), einen Träger (15), eine Auswerteeinheit (4) und einen ersten Messwandler (10), welcher eine elektrisch leitende Verbindung zwischen der ersten und zweiten Leitung (101,102) der ersten Strombahn (100) herstellt, umfasst, wobei die erste Temperaturmesseinheit (18) von dem ersten Messwandler (10) galvanisch getrennt ist und einen ersten Temperaturfühler (11) umfasst, wobei auf einer ersten Seitenfläche (151) des Trägers (15) ein zusätzliches elektrisch isolierendes Material (14) zwischen dem ersten Messwandler (10) und dem Träger (15) angeordnet ist und der erste Temperaturfühler (11) auf dem Träger (15) derart angeordnet ist, dass er eine Temperatur des ersten Messwandlers (10) erfassen kann, wobei die Auswerteeinheit (4) eine anstehende Überlast am Verbraucher (2) mittels erfassten Temperaturen des ersten Temperaturfühlers (11) ermitteln kann.
摘要:
A circuit-interrupting system for interrupting an electrical current to a device is provided including a relay assembly configured to be operable in a closed state when a sensed temperature is below a predetermined threshold, thereby maintaining electrical current to the device, and an open state when the sensed temperature is above the predetermined threshold, thereby interrupting the electrical current to the device. A heater element is provided proximal to said relay assembly and configured to activate at least the open state of the relay assembly. At least one sensor in electrical communication with the heater element is provided disposed remote from the relay assembly and being configured for sensing temperatures, wherein when the sensed temperature at said at least one sensor is above the predetermined threshold, the at least one sensor is configured to cause the heater element to activate the open state of the relay assembly.
摘要:
An electrical device including a heat sensing circuit interrupter to enable a load to be selectively coupled to or disconnected from a power source in accordance with a level of a sensed temperature includes a relay assembly operable between a closed state when the sensed temperature is below a predetermined limit temperature, thereby enabling the coupling of the load to the power source, and an open state when the sensed temperature is above the predetermined limit temperature, thereby electrically disconnecting the load from the power source. The device further includes a sensor assembly including a light source operatively associated with a light sensor. The light sensor is configured to be sensitive to specific levels of the sensed temperature and the light source is configured to emit light along a plurality of optical paths at any one of a plurality of wavelengths sensitive to temperature. The light sensor is further configured to sense temperature at any one of a plurality of operating points on the electrical device and trigger the relay assembly between the closed state and the open state.
摘要:
An electrical device including a heat sensing circuit interrupter to enable a load to be selectively coupled to or disconnected from a power source in accordance with a level of a sensed temperature includes a relay assembly operable between a closed state when the sensed temperature is below a predetermined limit temperature, thereby enabling the coupling of the load to the power source, and an open state when the sensed temperature is above the predetermined limit temperature, thereby electrically disconnecting the load from the power source. The device further includes a sensor assembly including a light source operatively associated with a light sensor. The light sensor is configured to be sensitive to specific levels of the sensed temperature and the light source is configured to emit light along a plurality of optical paths at any one of a plurality of wavelengths sensitive to temperature. The light sensor is further configured to sense temperature at any one of a plurality of operating points on the electrical device and trigger the relay assembly between the closed state and the open state.
摘要:
Electrical apparatuses with connector overheating protection and methods for protecting electrical apparatuses from connector overheating during current sinking and current sourcing operations are presented. The electrical apparatus includes an electrical connector and a temperature sensor, which is in direct contact with a physical part of the electrical connector. The temperature sensor monitors a temperature of the electrical connector during current sinking and current sourcing operations. During current sinking, if the temperature sensor senses a predetermined level of overheating of the electrical connector, then the sourcing of current to the electrical apparatus is switched off. During current sourcing, if the temperature sensor senses a predetermined level of overheating of the electrical connector, then the sourcing of current to the sinking device is switched off. Switching off the source of current prevents overheating of the electrical connector and protects the electrical apparatus during current sinking and current sourcing operations.
摘要:
An apparatus for supervising objects, such as hot plates and electrical stoves, with regard to overheating comprises at least one detector (9) for detecting conditions of overheating and a device (11) controlled by the detector for delivering for instance alarm. The detector is a detector for infrared radiation arranged at a distance from the object to detect heat radiation emitted therefrom.