Patent application number | Description | Published |
20080198637 | Multilevel AC/DC converter for traction applications - The present disclosure is concerned with a power supply system for railway traction applications including a multilevel AC/DC converter. The converter comprises a plurality of series-connected single-stage cycloconverters or direct AC frequency converters connected between an AC supply line and a traction transformer. The transformer is operable at a transformer nominal frequency below 3 kHz and above the AC line frequency. On the secondary side of the transformer, more than one parallel-connected secondary converter are provided and connected to a DC link. In case of failure of one of the secondary converters, the multilevel AC/DC converter may continue to operate with reduced power delivered by the remaining operating levels. | 08-21-2008 |
20110253676 | SWITCH UNIT AND CIRCUIT BREAKER FOR A MEDIUM VOLTAGE CIRCUIT - A switch unit | 10-20-2011 |
20110290761 | ARC CHUTE, CIRCUIT BREAKER FOR A MEDIUM VOLTAGE CIRCUIT, AND USE OF A POLYMER PLATE - The disclosure relates to an arc chute for a medium voltage circuit breaker having a housing, at least one stack of a plurality of substantially parallel metal plates arranged in the housing, the at least one stack defining a first axis in parallel to a stacking direction; an arc space arranged in the housing, wherein the arc space is adapted to allow an arc to expand therein; and at least one arc quenching plate disposed in the housing, wherein the arc guiding plate has at least one surface which has a surface plane extending in parallel to the first axis. Further, the present disclosure relates to a circuit breaker having a switching unit with a first switch contact and a second switch contact, movable between a first position, wherein the first switch contact contacts the second switch contact, and a second position, wherein the first switch contact is separated from the second switch contact, and an arc chute. Additionally, the disclosure relates to a polymer plate selected of a group containing a flame retardant polymer, a flame retardant polymer having a flame retardant filler, and a polymer having a flame retardant filler as an arc quenching plate. | 12-01-2011 |
20130037520 | SWITCH UNIT, METHOD FOR ASSEMBLING A SWITCH UNIT, AND CIRCUIT BREAKER FOR A MEDIUM VOLTAGE CIRCUIT - A switch unit for a DC circuit is disclosed, which includes a first switch contact, and a second switch contact, which is movable between a first position, wherein the first switch contact contacts the second switch contact, and a second position, wherein the second switch contact is separated from the first switch contact. A positioning element to position an arc chute on the switch unit, the arc chute comprises a plurality of substantially parallel metal plates, the positioning element arranged to guide an arc, which is created between the first switch contact and the second switch contact, into the arc chute in an arc displacement direction in order to be extinguished. At least one gas emitting element, wherein at an interruption operation of the circuit breaker at its nominal current, the arc between the first switch contact and the second switch contact vaporizes a portion of the gas emitting layer. | 02-14-2013 |
20130037521 | ARC CHUTE FOR A CIRCUIT BREAKER, CIRCUIT BREAKER AND METHOD FOR ASSEMBLING AN ARC CHUTE - An arc chute for a DC circuit breaker is disclosed which includes at least one stack of a plurality of substantially parallel metal plates, the at least one stack defining a first axis A in parallel to a stacking direction; an arc space adapted to allow an arc to extend along the first axis, wherein a second axis traversing in parallel to the metal plates the at least one stack and the arc space substantially orthogonal to the first axis. Further, an arc-chute housing having at least one side wall, the at least one side wall being substantially parallel to the second axis, wherein the distance between the at least one sidewall and the metal plates is, for example, less than 5 mm, such as less than 2 mm. | 02-14-2013 |
Patent application number | Description | Published |
20090041034 | Method and System for Characterizing Heterogeneous Communication Nodes - A method of sending data between heterogeneous nodes. The method includes a step of inserting a type indicator into a message (RE( | 02-12-2009 |
20090187664 | Method for addressing call transmission and service elements between heterogenous nodes - A SIP server addressing method for the inter-operation of SIP nodes (A, B) of a determined IP type in which each SIP server (P, R) is attributed (A) an auxiliary address (R | 07-23-2009 |
20100034079 | SERVICE MANAGEMENT IN A NETWORK - In a network ( | 02-11-2010 |
20100074249 | SERVICE CONTINUITY MANAGEMENT IN A NETWORK - A service is provided to a user of a terminal in a network, comprising a service platform and network equipment including session border controllers. Each of the controllers is capable of communicating with the service platform. At least one given session border controller is capable of routing messages received from the terminal, intended for the service platform. This controller decides that the service platform is not accessible on the basis of an accessibility check ( | 03-25-2010 |
20150092013 | METHOD AND A DEVICE FOR TRANSMITTING AT LEAST A PORTION OF A SIGNAL DURING A VIDEO CONFERENCE SESSION - A method and a device for transmitting at least a portion of a signal during a video conference session is disclosed. In one aspect, a method of transmitting at least a portion of a signal acquired by a first terminal to one second terminal during a video conference session, the signal comprising an audio stream and a video stream conveying images acquired with the help of one video image sensor is disclosed. The method comprises obtaining a parameter representative of a quality of the acquisition performed by the sensor of the video images conveyed by the video stream of the signal, and a process of notifying the first terminal of information representative of the acquisition quality. If this parameter is representative of an acquisition quality that is higher than a predetermined level, both the audio stream and the video stream of the signal are transmitted to the second terminal. Otherwise, the audio stream is transmitted to the second terminal and the video stream is blocked so that it is not transmitted to the second terminal. | 04-02-2015 |