WO2001069271A2 - Messwandler - Google Patents
Messwandler Download PDFInfo
- Publication number
- WO2001069271A2 WO2001069271A2 PCT/EP2001/003041 EP0103041W WO0169271A2 WO 2001069271 A2 WO2001069271 A2 WO 2001069271A2 EP 0103041 W EP0103041 W EP 0103041W WO 0169271 A2 WO0169271 A2 WO 0169271A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- transducer according
- windings
- primary winding
- fixing
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
- G01R15/183—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using transformers with a magnetic core
Definitions
- the invention relates to a transducer with a primary winding, a secondary winding and a housing for receiving the secondary winding, the primary winding being wound on the outside of the housing.
- Transducers are transformers to which measuring devices are connected. Voltage meters or voltage paths of measuring devices are connected to voltage transformers, current meters or current paths to current transformers.
- Voltage converters are mostly used in high-voltage systems to keep the high voltage away from the measuring station.
- Voltage transformers are connected like a transformer.
- Current transformers are used in low-voltage systems in order to be able to use measuring instruments with a small measuring range. In high-voltage systems, current transformers are used even at low currents to keep the high voltage away from the measuring station.
- the input or primary winding is connected in series with the consumer. The entire load or mains current then flows through the primary winding. The mains current and the current in the output or secondary winding, which is almost short-circuited by the ammeter, behave in the opposite way to the heating numbers.
- the magnetic flux density in the iron core is very low because both floods cause opposite fields of the same strength.
- Current transformers are used, for example, for current measurement in electronic tripping devices, by means of which an interrupter contact, for example of a protective circuit, is controlled.
- the lateral fixation with respect to the housing can preferably be achieved by fixing grooves which are arranged on the outside of the housing, the windings of the primary winding being at least partially guided in the fixing grooves. Lateral displacement and thus damage to the windings is avoided by the fixing grooves.
- the fixing grooves can, for example, have a clamping function for clamping the windings, so that an additional fixing in the vertical direction is ensured. This can simplify assembly, for example.
- Three groups of fixing grooves can be arranged at different locations on the outside of the housing, so that the windings of different groups guided in the fixing groove groups have a predetermined angle to one another. This spacing of the primary windings on the housing enables an improved distribution of the forces acting on the transducer to be achieved.
- the primary winding can be formed from several windings connected in parallel. This leads to a small overall diameter of the primary winding and sufficient flexibility of the primary winding leader. Furthermore, this configuration ensures that the primary windings have a sufficiently small diameter to be able to be passed through the central opening of the torus in a toroidal housing. For example, three windings can be connected in parallel, these being guided on the housing at different angles.
- the windings connected in parallel can be electrically connected to a connection terminal, which is used, for example, to supply the primary current.
- the connection terminal can have fixing notches for receiving the ends of the windings. Furthermore, holes can be formed in the connection terminal through which the ends of the windings are guided. The passage of the cable ends through the holes and the subsequent bending of the ends in the fixing notches enables the winding ends to be soldered on easily, the stresses acting on the solder connections being reduced.
- the housing can be formed, for example, by a two-part plastic housing, the two halves of which are pluggably connected. In this way, a simple introduction of the secondary winding is possible.
- the housing has a toroidal shape, the windings of the primary winding can be led to the annular bead of the toroidal shape and be fixed by means of axial guide grooves on the outer periphery of the annular combustion bead.
- the guide grooves can be arranged in groups on the housing. For example, three groups of the guide grooves can be arranged at a predetermined angular distance on the toroidal housing. This spaced arrangement of the guide groove groups enables the forces occurring at high limit currents to be compensated for, so that damage to the entire transducer arrangement is avoided.
- a guide pin for guiding the windings can be arranged in the central opening of the toroidal housing.
- This guide pin preferably has axial guide grooves for receiving individual windings. This ensures additional fixation of the windings in the central opening of the toroidal housing. May direct the white ⁇ the Fuhrungsw on at least one Stirnendflache have an orientation contour which at a connection terminal for connecting the transducer to a engages the alignment hole introduced to measure the rotational position of the guide pin with respect to the connection terminal. This ensures a functional assembly.
- the windings of the primary winding are also preferably attached directly to the connection terminal (for example, soldered).
- the housing halves of the toroidal housing can preferably be designed in such a way that they engage in one another, so that rotation of the housing halves is prevented.
- This can be achieved in that an outlet opening for the passage of the secondary winding conductors is constructed in two parts, one part being arranged on one of the housing halves and the other part on the other housing half, and the two parts intermeshing, so that the housing halves are twisted is prevented.
- a predetermined positional relationship between the exit opening of the secondary winding conductors and the connection terminals can thereby be ensured.
- 1 is a partially exploded view of a current transformer according to a first preferred exemplary embodiment
- 2 shows an oblique front and rear view of the current transformer according to the first preferred exemplary embodiment without connecting terminals on the primary side
- FIG 3 is an oblique view of a guide pin used in the current transformer according to the first preferred exemplary embodiment
- FIG. 4 shows a partially exploded view of a current transformer according to a second preferred exemplary embodiment
- FIG. 5 shows an oblique front and rear view of the current transformer according to the second preferred exemplary embodiment without primary-side connection terminals
- FIG. 6 shows an interconnection of three current transformers according to the first exemplary embodiment as a three-pole current transformer arrangement.
- FIGS. 1 to 3 A first preferred exemplary embodiment of a measuring transformer used as a current transformer is explained below with reference to FIGS. 1 to 3.
- Such a current transformer is provided, for example, for a nominal current of 25 A and comprises a shell-shaped housing 1, in which the secondary winding wound, for example, on an N-shaped core material is accommodated.
- the winding conductors 14 of the secondary winding are led to the outside through an outlet opening arranged on the housing 1.
- several primary windings 10 are required, which are wound in groups on the housing 1 at a certain angular distance.
- the windings 10 of the primary winding are laterally fixed in position with respect to the housing 1 by guide or fixing grooves 2.
- the fixing grooves 2 are arranged on the surface of the housing, for example by appropriate design of the mold of the plastic housing, by appropriate processing of the housing surface, or by fixing (for example gluing) corresponding structures on the housing surface.
- the primary windings 10 consist of three individual winding conductors and thus each have three ends which are fastened to a respective connection terminal 3 or 4 for connecting the current path to be measured. Fastening takes place in that the three individual conductors are passed through corresponding through openings in the connecting terminals 3 and 4 and are then bent into corresponding fixing notches 6 and 7, respectively. This measure simplifies soldering, the soldering points being subjected to low voltages. To achieve the required current carrying capacity, a certain cross section of the primary winding line is required. Such a cross section, however, leads to difficult handling due to the reduced flexibility of the conductor, and it is not possible to accommodate three primary windings in the central opening of the toroidal housing shown in FIG. 1.
- the three single winding conductors with a correspondingly reduced cross-section are used and electrically connected at terminals 3 and 4 as a parallel connection. This enables greater flexibility lit the winding conductor with reduced space requirement in the middle opening of the toroidal housing.
- a guide pin 5 m is arranged in the central opening of the toroidal housing 1, through which the windings are also guided or fixed on the side of the toroidal housing 1 opposite the fixing grooves. This can be achieved, for example, by guide grooves of the guide pin 5 which will be explained later.
- the housing 1 has a holding base 8 which is inserted into a holding recess 9 made in a holding plate during assembly.
- FIG. 2 shows an oblique front and rear view of the current transformer according to the first preferred exemplary embodiment without the connecting terminals 3 and 4.
- an alignment contour 11 arranged on the two end faces of the guide pin 5 can be seen.
- the alignment contour can be produced by appropriately designing a casting mold or by machining the surface of the guide pin 5.
- the two alignment contours 11 are designed to fit precisely with the alignment openings 16 arranged in the connecting terminals 3 and 4.
- the alignment contour 11 can also be provided only on one end face.
- the outlet opening for the secondary conductors 14 is designed in two parts, a channel-shaped part 12 being arranged on one half of the housing and a part 13 engaging in the channel-shaped part 12 being designed as a channel closure with two outlet openings for the two ends of the secondary conductors 14 ,
- the two housing halves can be pushed or inserted into one another, the closing part 13 of the outlet opening engaging in the channel-shaped part 12, so that twisting of the two housing halves pushed into one another is prevented. This also results in strain relief.
- the fixing grooves 2 arranged in groups that have a predetermined angular distance.
- the groups can for example be arranged at equal angular intervals of 120 ° on the surface of the toroidal housing 1.
- an uneven angular distribution is provided.
- the optimal angular arrangement of the fixing groove groups for the best possible compensation of the displacement forces can be determined by measurement.
- Fig. 3 shows a separate representation of the guide pin 5, which is arranged in the central opening of the toroidal housing 1.
- the guide pin 5 has guide grooves 15 in which the windings on the primary side are guided.
- the windings can thus also be guided or fixed on the inside of the annular bulge of the toroidal housing 1.
- the alignment contours 11 can be seen on the two ends of the guide pin 5 shown in FIG. 3.
- a second preferred exemplary embodiment for a lower primary-side nominal current of 7 A is described below with reference to FIGS. 4 and 5.
- the current transformer according to the second preferred exemplary embodiment has essentially the same structure as that of the first preferred exemplary embodiment. In contrast to the first preferred exemplary embodiment, however, in the current transformer according to the second preferred exemplary embodiment, only one primary winding conductor is required due to the lower nominal current, but four windings 10 are provided at predetermined angular intervals. In the present case, two of the windings 10 are combined to form a group and the other two are arranged at predetermined angular distances from the group.
- the individual primary marwicklungsleiter is guided through one of the terminals in the terminal ⁇ 3 and 4 arranged openings and turned into one of the Fixierkerbache 7 and angelotet.
- the current transformer housing 1 can thus be used in connection with the guide pin 5 for various exemplary embodiments, as a result of which flexible use is possible at reduced costs.
- FIG. 6 shows an arrangement of three current transformers according to the first exemplary embodiment as a three-pole current transformer in an interruption switching device, which is housed in a cast housing.
- the cast housing has openings through which the exit openings on the secondary side with the secondary conductors 14 and the connection terminals 4 on the primary side are led out.
- the other primary-side connection terminals 3 of the current transformers are electrically connected to one another, so that, for example, a star configuration results for a three-phase application.
- the fixing grooves 2 can have a clamping function, the primary windings being clamped into the fixing grooves 2, so that simple installation and additional fixing in the radial direction can be achieved.
- the present invention is not restricted to the specific configurations of the two preferred exemplary embodiments.
- the essential idea of the invention lies in the lateral fixing of the windings on the primary side with respect to the housing surface. This can also be done by other suitable measures, such as, for example, gluing, guide holes or guide boxes, or changes in the housing surface, which lead to a lateral fixation of the primary windings in their position with respect to the housing 1.
- the shape of the housing 1 is also not restricted to a toroidal shape, but other housing shapes are also conceivable in which the secondary winding is accommodated and on which the primary winding is wound.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transformers For Measuring Instruments (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Materials For Medical Uses (AREA)
- Cookers (AREA)
- Table Equipment (AREA)
- Photoreceptors In Electrophotography (AREA)
- Coils Or Transformers For Communication (AREA)
- Regulation Of General Use Transformers (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL364497A PL202628B1 (pl) | 2000-03-17 | 2001-03-16 | Przetwornik wielkości mierzonej |
DK01915365T DK1266231T3 (da) | 2001-03-16 | 2001-03-16 | Måletransformer |
AT01915365T ATE279732T1 (de) | 2000-03-17 | 2001-03-16 | Messwandler |
DE2001504108 DE50104108D1 (de) | 2000-03-17 | 2001-03-16 | Messwandler |
EP01915365A EP1266231B1 (de) | 2000-03-17 | 2001-03-16 | Messwandler |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10013143A DE10013143C2 (de) | 2000-03-17 | 2000-03-17 | Messwandler |
DE10013143.3 | 2000-03-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001069271A2 true WO2001069271A2 (de) | 2001-09-20 |
WO2001069271A3 WO2001069271A3 (de) | 2001-12-20 |
Family
ID=7635188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/003041 WO2001069271A2 (de) | 2000-03-17 | 2001-03-16 | Messwandler |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1266231B1 (de) |
CN (1) | CN1276261C (de) |
AT (1) | ATE279732T1 (de) |
DE (2) | DE10013143C2 (de) |
ES (1) | ES2248297T3 (de) |
PL (1) | PL202628B1 (de) |
PT (1) | PT1266231E (de) |
WO (1) | WO2001069271A2 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10223995C1 (de) | 2002-05-29 | 2003-11-27 | Epcos Ag | Spulenkörper und Kerndrossel mit dem Spulenkörper |
DE102004021835B4 (de) * | 2004-05-04 | 2006-05-11 | Tyco Electronics Amp Gmbh | Geräteklemme |
DE102005047894B4 (de) * | 2005-10-06 | 2010-05-12 | Abb Ag | Verfahren zur Prüfung der Betriebsfähigkeit von Messumformern |
IT1395697B1 (it) * | 2009-05-28 | 2012-10-19 | Abb Spa | Trasformatore di corrente, dispositivo di protezione comprendente tale trasformatore, e relativo interruttore |
DE102013206453B4 (de) | 2013-04-11 | 2015-02-12 | SUMIDA Components & Modules GmbH | Gehäuse mit verlängerten Kriech- und Luftstrecken und elektrisches Bauelement mit derartigem Gehäuse |
DE102013213404A1 (de) * | 2013-07-09 | 2015-01-15 | Vacuumschmelze Gmbh & Co. Kg | Induktives Bauelement |
US9939465B2 (en) * | 2015-04-24 | 2018-04-10 | Sumida Corporation | Electric current detector |
DE102015216861A1 (de) * | 2015-09-03 | 2017-03-09 | Siemens Aktiengesellschaft | Aktivteileinheit eines Messwandlers und Messwandler |
CN108878118B (zh) | 2017-05-08 | 2021-06-11 | 台达电子工业股份有限公司 | 变压器 |
CN108878105B (zh) | 2017-05-08 | 2021-07-30 | 台达电子工业股份有限公司 | 变压器 |
EP3474024A1 (de) * | 2017-10-19 | 2019-04-24 | RITZ Instrument Transformers GmbH | Stromwandler mit fluid- oder ölpapierisolierung für hochspannung |
WO2024126903A1 (fr) * | 2022-12-13 | 2024-06-20 | Hager-Electro Sas | Tore de mesure differentielle pour un appareil electrique de protection differentielle et appareil electrique de protection differentielle associe |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0118269A1 (de) * | 1983-02-28 | 1984-09-12 | CODMAN & SHURTLEFF INC. | Elektrischer Transformator |
EP0456583A1 (de) * | 1990-05-10 | 1991-11-13 | Merlin Gerin | Homopolarer Transformator für Differential- oder Schutzschalter und Montageverfahren |
EP0650172A1 (de) * | 1993-10-25 | 1995-04-26 | Legrand | Gehäuse für Ringkern und gewickelter Ringkern mit diesem Gehäuse |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7728177U1 (de) * | 1977-09-12 | 1979-01-04 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Wandler, insbesondere summenstromwandler |
DE4216248C2 (de) * | 1992-05-16 | 2000-05-18 | Abb Patent Gmbh | Aufnahmebehälter für einen Wandler für einen Fehlerstromschutzschalter und Wandler |
-
2000
- 2000-03-17 DE DE10013143A patent/DE10013143C2/de not_active Expired - Lifetime
-
2001
- 2001-03-16 EP EP01915365A patent/EP1266231B1/de not_active Expired - Lifetime
- 2001-03-16 PT PT01915365T patent/PT1266231E/pt unknown
- 2001-03-16 CN CNB018066283A patent/CN1276261C/zh not_active Expired - Fee Related
- 2001-03-16 PL PL364497A patent/PL202628B1/pl unknown
- 2001-03-16 ES ES01915365T patent/ES2248297T3/es not_active Expired - Lifetime
- 2001-03-16 DE DE2001504108 patent/DE50104108D1/de not_active Expired - Lifetime
- 2001-03-16 AT AT01915365T patent/ATE279732T1/de active
- 2001-03-16 WO PCT/EP2001/003041 patent/WO2001069271A2/de active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0118269A1 (de) * | 1983-02-28 | 1984-09-12 | CODMAN & SHURTLEFF INC. | Elektrischer Transformator |
EP0456583A1 (de) * | 1990-05-10 | 1991-11-13 | Merlin Gerin | Homopolarer Transformator für Differential- oder Schutzschalter und Montageverfahren |
EP0650172A1 (de) * | 1993-10-25 | 1995-04-26 | Legrand | Gehäuse für Ringkern und gewickelter Ringkern mit diesem Gehäuse |
Also Published As
Publication number | Publication date |
---|---|
PT1266231E (pt) | 2004-12-31 |
EP1266231B1 (de) | 2004-10-13 |
EP1266231A2 (de) | 2002-12-18 |
WO2001069271A3 (de) | 2001-12-20 |
DE50104108D1 (de) | 2004-11-18 |
PL202628B1 (pl) | 2009-07-31 |
CN1276261C (zh) | 2006-09-20 |
ATE279732T1 (de) | 2004-10-15 |
DE10013143A1 (de) | 2001-10-04 |
PL364497A1 (en) | 2004-12-13 |
ES2248297T3 (es) | 2006-03-16 |
DE10013143C2 (de) | 2002-06-27 |
CN1418313A (zh) | 2003-05-14 |
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