Title:
DEVICE AND METHOD FOR SUPPLYING POWER TO FIELD DEVICES
Document Type and Number:
WIPO Patent Application WO2004084393
Kind Code:
A8
Abstract:
The invention relates to a device (20) for supplying power to at least one field device (10) comprising a measuring module (12), a control, data capture and processing module (14) and a communications unit (15), located in a technical installation, said device (20) supplying the voltage required to operate the field device. The installation is equipped with at least one electric cable (1), which is connected to an installation voltage that forms part of one of the conventional component voltage systems in technical installations. The device (20) comprises a current transformer with at least one terminal (21) on the input side and one terminal (38) on the output side and with an appropriate transformer region for adapting the respective component voltage system to the voltage of the devices, in addition to a connecting cable (4) and a connecting element (3) for attaching to the electric cable(s) (1). The current transformer comprises (20a) a network of sub-area current transformers (26, 28, 30, 32, 26', 28', 30', 32') in the network nodes and at least one switching element (27, 29, 31, 33, 27', 29', 31', 33') in at least one meshed network. The current transformer also comprises a control unit (22) for controlling the switching elements (27, 29, 31, 33, 27', 29', 31', M), enabling the current path between the input and output interfaces (21, 38) to be composed by activating a corresponding number of suitable sub-area current transformers (26, 28, 30, 32, 26', 28', 30', 32') in series, thus creating the appropriate transformer region for adapting the respective component voltage system to the voltage of the devices.
Inventors:
SCHEIBLE GUNTRAM (DE)
MAST JOCHEN (DE)
KEUL THOMAS (DE)
OVERHOFF DIETMAR (DE)
DECKMANN HEINRICH (DE)
HUCK RALF (DE)
MAST JOCHEN (DE)
KEUL THOMAS (DE)
OVERHOFF DIETMAR (DE)
DECKMANN HEINRICH (DE)
HUCK RALF (DE)
Application Number:
PCT/EP2003/004014
Publication Date:
August 18, 2005
Filing Date:
April 17, 2003
Export Citation:
Assignee:
ABB RESEARCH LTD (CH)
SCHEIBLE GUNTRAM (DE)
MAST JOCHEN (DE)
KEUL THOMAS (DE)
OVERHOFF DIETMAR (DE)
DECKMANN HEINRICH (DE)
HUCK RALF (DE)
SCHEIBLE GUNTRAM (DE)
MAST JOCHEN (DE)
KEUL THOMAS (DE)
OVERHOFF DIETMAR (DE)
DECKMANN HEINRICH (DE)
HUCK RALF (DE)
International Classes:
H02M1/10; (IPC1-7): H02M1/10
Download PDF: