Abrégé

An apparatus for power monitoring and voltage suppression comprising a reference node, a first transformer, a second transformer, a third transformer, a resistive element, a ground fault indicator, a current detector, a power quality meter, and a meter power supply is provided. The transformers have first sides and secondary sides, with the secondary sides connected in series. The resistive element and the ground fault indicator are connected in parallel to the secondary sides of the transformers. The circuit connecting the secondary sides, the resistive element, and the ground fault indicator is not electrically connected to ground.

Classes IPC  ?

• H02M 1/42 - Circuits ou dispositions pour corriger ou ajuster le facteur de puissance dans les convertisseurs ou les onduleurs
• G01R 31/50 - Test d’appareils, de lignes, de câbles ou de composants électriques pour y déceler la présence de courts-circuits, de continuité, de fuites de courant ou de connexions incorrectes de lignes
• H01F 27/42 - Circuits spécialement adaptés à la modification ou la compensation des caractéristiques électriques des transformateurs, réactances ou bobines d'arrêt

Abrégé

An apparatus for power monitoring and voltage suppression comprising a reference node, a first transformer, a second transformer, a third transformer, a resistive element, a ground fault indicator, a current detector, a power quality meter, and a meter power supply is provided. The transformers have first sides and secondary sides, with the secondary sides connected in series. The resistive element and the ground fault indicator are connected in parallel to the secondary sides of the transformers. The circuit connecting the secondary sides, the resistive element, and the ground fault indicator is not electrically connected to ground.

Classes IPC  ?

• G01R 19/165 - Indication de ce qu'un courant ou une tension est, soit supérieur ou inférieur à une valeur prédéterminée, soit à l'intérieur ou à l'extérieur d'une plage de valeurs prédéterminée
• G08B 21/18 - Alarmes de situation
• G08B 25/00 - Systèmes d'alarme dans lesquels l'emplacement du lieu où existe la condition déclenchant l'alarme est signalé à une station centrale, p. ex. systèmes télégraphiques d'incendie ou de police
• H02B 1/56 - RefroidissementVentilation
• H02B 15/00 - Pupitres ou panneaux de surveillance pour commandes ou vues d'ensemble centralisées

Abrégé

Phaseback DC choke includes a common core, a first coil formed about the common core, and a second coil formed about the common core in parallel opposing configuration relative the first coil. A DC circuit including a Phaseback DC choke is also provided.

Classes IPC  ?

• H02M 1/12 - Dispositions de réduction des harmoniques d'une entrée ou d'une sortie en courant alternatif
• H01F 27/28 - BobinesEnroulementsConnexions conductrices
• H01F 17/04 - Inductances fixes du type pour signaux avec noyau magnétique
• H01F 17/00 - Inductances fixes du type pour signaux

Abrégé

Three single-phase transformers having primary sides connected in a delta connection and the secondary sides connected in a series-delta connection. Each power line is connected through a fused disconnect to two primary terminals, each primary terminal on a different transformer. A second terminal on the secondary side of the first phase transformer is connected to a first terminal on the secondary side of the third transformer through a non-inductive grid resistor. The second terminal on the secondary side of the third transformer is connected to the first terminal on the secondary side of a second transformer. The second terminal on the secondary side of the second transformer is connected to the first terminal on the secondary side of the first transformer. In this fashion, the secondary sides of each of the single-phase transformers are connected in series through a non-inductive grid resistor.

Classes IPC  ?

• H02J 1/02 - Dispositions pour réduire les harmoniques ou les ondulations

Abrégé

In accordance with the disclosed subject matter herein, an apparatus for suppressing in a split-phase power system, effects of line-to-ground transient voltage spikes, balancing phase voltage with respect to ground, filtering phase voltage harmonics, cleaning up electrical noise in a split-phase power system, redirecting energy and absorbing electrical noise, protecting or replacing typical TVSS (transient voltage surge suppressor) units. The apparatus of the present invention can not be damaged by electrical noise. It uses virtually no energy in monitor mode and cannot draw over 3 amps. The apparatus of the present invention can be applied to single-phase lines from center tapped delta power transformers. In some embodiments of the disclosed subject matter, an apparatus for use with a power supply bus having at least a first power line and a second power line. An exemplary apparatus includes an interface having an input side and an output side, the input side capable of being coupled to at least the first power line, the second power line and ground node, and the output side of the interface having at least first and second output nodes.

Classes IPC  ?

• H02H 3/22 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un excès de tension de courte durée, p. ex. foudre