Abrégé

A power supply control device comprises a controller and power connection circuitry. The power connection circuitry comprises a switchable power connection path between a source side and a load side. The power connection path is switchable to operate in a first operation state or an on-state in which state impedance between the source side and the load side is very low to permit flow of operation current through the power connection path, or a second operation state or an off-state in which state impedance between the source side and the load side is very high to impede flow of operation current through the power connection path. The controller is to operate to transmit at least one type of enquiry signals to the load side and to determine with reference to at least one type of received responsive signals whether a load on the load side is eligible for power supply connection. The controller is to switch the power connection path to the on-state or to maintain the power connection path to the on-state if the responsive signals indicate eligibility for power supply connection.

Classes IPC  ?

• H02H 5/12 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions non électriques normales de travail avec ou sans reconnexion sensibles à une présence ou un contact indésirable sur les parties en charge par des êtres vivants
• G05B 9/02 - Dispositions de sécurité électriques
• H02J 3/14 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par interruption, ou mise en circuit, des charges du réseau, p. ex. charge équilibrée progressivement
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries

Abrégé

A power safety device (100) comprises a control device (140), a load monitor (120) and a switching circuitry, wherein the switching circuitry is optionally operable in a first operation state in which a power supply side (S) and a load side (L) are connected by a low impedance power conduction path or a second operation state in which the impedance of the power conduction path between the load side and the power supply side is high so that hazardous operation current is prevented from flowing from the power source side, through the switching circuitry, and to the load side. The load monitor comprises circuit arrangements to determine and/or monitor load condition within the first operation state upon detection of a non-hazard load condition or a predetermined safe load condition on the load side.

Classes IPC  ?

• H02H 5/12 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions non électriques normales de travail avec ou sans reconnexion sensibles à une présence ou un contact indésirable sur les parties en charge par des êtres vivants

Abrégé

A power supply control device comprises a controller and power connection circuitry. The power connection circuitry comprises a switchable power connection path between a source side and a load side. The power connection path is switchable to operate in a first operation state or an on-state in which state impedance between the source side and the load side is very low to permit flow of operation current through the power connection path, or a second operation state or an off-state in which state impedance between the source side and the load side is very high to impede flow of operation current through the power connection path. The controller is to operate to transmit at least one type of enquiry signals to the load side and to determine with reference to at least one type of received responsive signals whether a load on the load side is eligible for power supply connection. The controller is to switch the power connection path to the on-state or to maintain the power connection path to the on-state if the responsive signals indicate eligibility for power supply connection.

Classes IPC  ?

• H02J 4/00 - Circuits pour réseaux principaux ou de distribution, la nature alternative ou continue du courant n'étant pas précisée
• H02H 3/00 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion
• H02H 5/12 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions non électriques normales de travail avec ou sans reconnexion sensibles à une présence ou un contact indésirable sur les parties en charge par des êtres vivants