EP2037477A1 - Elektrogerät mit Differentialschutz - Google Patents

Elektrogerät mit Differentialschutz Download PDF

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Publication number
EP2037477A1
EP2037477A1 EP08354048A EP08354048A EP2037477A1 EP 2037477 A1 EP2037477 A1 EP 2037477A1 EP 08354048 A EP08354048 A EP 08354048A EP 08354048 A EP08354048 A EP 08354048A EP 2037477 A1 EP2037477 A1 EP 2037477A1
Authority
EP
European Patent Office
Prior art keywords
differential protection
circuit
circuit breaker
compartment
partition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08354048A
Other languages
English (en)
French (fr)
Other versions
EP2037477B1 (de
Inventor
Bernard Lebeau
Nicolas Bernard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP2037477A1 publication Critical patent/EP2037477A1/de
Application granted granted Critical
Publication of EP2037477B1 publication Critical patent/EP2037477B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with differential transformer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/025—Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts

Definitions

  • the invention relates to the field of electrical devices with differential protection such as differential circuit breakers, or differential switches, or other combination of protective devices or control such as contactors.
  • the French patent application FR2715767 describes an electrical device with differential protection comprising, in an insulating housing, a circuit breaker part and a differential protection part, arranged on either side of an insulating partition.
  • the partition is equipped with bushings through which pass phase and neutral circuit connection conductors.
  • the circuit breaker portion has switches interposed on each of the phase and neutral circuits with fixed contacts and movable contacts controlled by a circuit breaker mechanism.
  • the differential protection portion comprises, in turn, a differential transformer having two primary windings formed by the phase and neutral circuits.
  • the electrical device described in the aforementioned patent application further comprises input and output terminals of the phase and neutral circuits disposed on two lateral faces of the housing.
  • such an electrical device with differential protection comprises a phase circuit 11 and a neutral circuit 12 in a housing 13.
  • the housing comprises two main faces 14, a first lateral face 15 and a second lateral face 16.
  • the phase circuit extends between an input terminal 17 and an output terminal 18.
  • the neutral circuit extends, meanwhile, between an input terminal 19 and an output terminal 20.
  • the input terminals 17, 19 are arranged on the second side face 16.
  • the output terminals 18, 20 are, for their part, arranged on the first lateral face 15.
  • the device comprises a circuit-breaker part 21 and a differential-protection part 22.
  • the differential-protection part is separated from the circuit-breaker part by a partition 23 substantially parallel to the main faces 14 of the case 13.
  • a differential transformer 31 makes it possible to measure the differential current.
  • This transformer is equipped with two primary windings 32, 33 respectively corresponding to the phase circuit and to the neutral circuit, as well as a secondary winding, not shown, which is connected to an electromagnetic trip relay, the latter being in mechanical connection with a mechanism circuit breaker circuit breaker.
  • the circuit breaker portion 21 comprises a thermal tripping mechanism 42 and an electromagnetic tripping mechanism 41 arranged on the phase circuit.
  • the circuit breaker portion further includes a switch 43 interposed on the phase circuit, and a switch 44 interposed on the neutral circuit.
  • the circuit breaker part comprises also a compartment 45 containing at least the switch and an interrupting chamber not shown.
  • the compartment is formed by a main face of the housing 3, a portion of the side faces 15, 16 of said housing 3 and the partition 23.
  • the compartment 45 has a wall, in this case the partition 23 separating the differential protection portion of the circuit breaker part, provided with first bushings 51, 52, 53, 54.
  • the device comprises connecting conductors 55, 56, 57, 58 passing from the compartment of the circuit breaker part to the differential protection part, through these first bushings.
  • the connecting conductors 55, 56 make it possible to connect the primary winding 32 to the phase circuit 11.
  • the connecting conductors 57, 58 make it possible, in turn, to connect the primary winding 33 to the neutral circuit 11.
  • the differential protection part 22 has recesses 59 on the side faces in the differential protection part. In this way, the input and output terminals can be electrically connected through connection combs not shown, without the positioning of the comb teeth vis-a-vis with the side faces in the protection part. differential is hindered.
  • FIG. 2 Another example of a differential protection device according to the prior art is represented on the figures 2 and 3 .
  • a view of the circuit breaker portion behind the main face of the insulating housing 60 makes it possible to visualize the breaking means.
  • FIG 3 a view of the partition on the side of the differential protection part can illustrate the connection between the circuit breaker part and said differential protection part.
  • the circuit breaker part comprises a neutral circuit 61 extending between a first input terminal, whose range 62 is represented on the figure 2 , and a first output terminal, whose range 63 is represented on the figure 2 .
  • the first input terminal is connected to a movable contact 64 of a switch of the neutral circuit, via a braid not shown. This movable contact is actuated by an opening mechanism 65 through a not shown handle or by triggering means.
  • the switch of the neutral circuit comprises a fixed contact 67. The neutral circuit extends between this fixed contact 67 and the first output terminal 63, in passing through a primary winding of the transformer of the differential protection part.
  • the passage in the differential part is through the connecting conductors 68, 69 through the partition separating the circuit breaker portion of the differential protection portion through first bushings 71, 72.
  • the circuit breaker portion further comprises a partially visible phase circuit 73 and extending between a second non-visible input terminal on the figure 2 and a second output terminal 74.
  • the switch of the phase circuit not visible on the figure 2 is actuated by the same opening mechanism 65 through the handle or by triggering means such as the electromagnetic tripping means 75.
  • the arc formed between the contacts of the switch of the phase circuit is dissipated to With the aid of an arc chamber 76.
  • the neutral circuit the phase circuit passes through a primary winding of the transformer of the differential protection part, via the connecting conductors passing through the partition separating the circuit breaker part of the differential protection part.
  • the partition 81 separating the circuit breaker part of the differential part comprises bushings allowing the passage of connecting conductors between the two parts.
  • the connecting conductors referenced 68, 69 of the neutral circuit through the first bushings 71, 72.
  • the partition further comprises bushings 82, 83 to allow the passage of connecting conductors 84, 85 of the phase circuit .
  • the connecting conductors open into a compartment of the circuit breaker part containing the breaking means, in particular the breaking chamber 76 and the switches 43, 44.
  • the connecting conductors and currents in said conductors may have a negative impact with respect to an initial design of the breaking means as such.
  • such a device comprises a circuit breaker block 91 equipped with a phase circuit 92 extending between an input terminal 93 and an output terminal 94 and a neutral circuit 95 extending between an input terminal 96 and an output terminal 97.
  • the output terminals 94, 97 are arranged on a first side face 98.
  • the input terminals 93, 96 are, for their part, disposed on a second side face 99.
  • the circuit breaker block comprises a mechanism thermal trip 102, an electromagnetic trip mechanism 101, and switches 103, 104 interposed on each circuit.
  • the device represented in figure 4 also comprises a differential protection block 105 comprising a differential transformer and two primary windings 106, 107 respectively corresponding to the phase circuit and the neutral circuit.
  • the connection of the phase and neutral circuits with the primary windings of the differential protection block is carried out via connecting conductors 106, 107 between the output terminals 94, 97 of the circuit breaker block and the inputs of the differential protection block. .
  • the output terminals of the differential protection device resulting from the combination of the two blocks are transferred to two output terminals 108, 109 of the differential protection block.
  • a disadvantage of such a device is that the output terminals are not arranged in a manner allowing an electrical connection through connecting combs, unless the teeth of the combs face with the output terminals of the circuit breaker part.
  • the implementation of a differential protection device comprising two separate blocks requires an additional operation for the user, and does not allow a comb feed from below.
  • the wall of the compartment provided with the at least one first crossing is substantially parallel to the side faces of the housing, and the connecting conductors also pass through at least a second crossing disposed on the partition separating the portion to differential protection of the circuit breaker part.
  • the partition comprises a first portion separating the differential protection part from the compartment of the circuit breaker part and a second part separating the differential protection part from a connection zone, the at least one second crossing being arranged on the second part. of said partition.
  • the compartment of the circuit breaker part comprises a withdrawal of the wall provided with the at least a first crossing relative to the first lateral face of the housing, so as to allow the teeth of the connecting comb to be housed opposite each other. with said first side face for connection.
  • the withdrawal is partitioned.
  • the output terminals are arranged on the first side face.
  • the output terminals are arranged on the first side face of the differential protection part.
  • a first output terminal of the circuit breaker is disposed on the first side face in the circuit breaker portion and a second output terminal is disposed on the first side face in the differential protection portion.
  • each output terminal comprises a fixed contact piece against which, during connection, an electrical conductor or a comb tooth is clamped via a movable contact piece controlled by the rotation of a clamping screw.
  • a portion of the connecting conductors is housed in the differential protection portion in a space defined by the partition, the clamping screw and the movable contact piece of the output terminal closest to the partition.
  • a portion of the connecting conductors is housed in a connection zone disposed in the withdrawal of the compartment of the circuit breaker part.
  • connection between the connecting conductors is made by electric welding.
  • a connection between the connecting conductors can also be made by elastic electrical contact.
  • the figure 1 schematically represents an electrical device with differential protection according to the prior art comprising, in an insulating housing, a circuit breaker part and a differential protection part.
  • the figure 2 is a view of the circuit breaker portion of a differential protection electrical device according to the prior art having, in an insulating housing, a circuit breaker portion and a differential protection portion.
  • the figure 3 represents a view of the partition separating the differential part of the circuit-breaker part, on the side of the differential part, of the device represented in FIG. figure 2 .
  • the figure 4 schematically represents an electrical device with differential protection according to the prior art consisting of the combination of a differential protection block and a circuit breaker block, the two blocks being separable.
  • the figure 5 schematically represents an electrical device with differential protection according to the invention.
  • the figure 6 schematically represents an electrical device with differential protection according to a variant of the invention.
  • the figure 7 represents a three-dimensional view of an example of an electrical device with differential protection according to the invention.
  • the figure 8 represents a view from above of the electrical device with differential protection of the figure 7 .
  • the figure 9 represents a side view of the first side face of the housing of the differential protection electrical device of the figure 7 .
  • an example of a device with differential protection comprises a phase circuit 201 and a neutral circuit 202 in a housing 203.
  • the housing comprises two main faces 204, a first lateral face 205 and a second lateral face 206.
  • Each circuits extends between an input terminal 207, 208 and an output terminal 209, 210.
  • the input terminals 207, 208 are arranged on the second side face 206.
  • the output terminals 209, 210 are, as to them, arranged on the first side face 205.
  • the device comprises a circuit breaker portion 211 and a differential protection portion 212.
  • the differential protection portion is separated from the circuit breaker portion by a partition 213 substantially parallel to the main faces 204, and extending over the entire length of the housing 203.
  • a differential transformer 221 is equipped with two primary windings 222, 223 respectively corresponding to the phase circuit and to the neutral circuit, as well as a secondary winding, not shown, which is connected to an electromagnetic trip relay. , the latter being in mechanical connection with a circuit breaker mechanism of the circuit breaker part.
  • the circuit breaker portion 211 includes at least one trigger mechanism, in this case a thermal trip mechanism 232 and an electromagnetic trip mechanism 231 disposed on the phase circuit.
  • the circuit breaker portion further includes switches 233, 234 interposed on the phase and neutral circuits.
  • the circuit breaker part also comprises a compartment 235 containing at least the switch and a breaking chamber not shown.
  • the compartment 235 is formed by a main face 204 of the housing 203, a portion of the second side face 206 of said housing and a first portion 214 of the partition 213.
  • the first portion 214 of the partition 213 separates the protected portion differential 212 compartment of the circuit breaker portion 211 and thus forms one of the walls of said compartment.
  • the partition further comprises a second portion 215 separating the differential portion 212 from a connecting zone 216.
  • the compartment 235 has a wall 241 provided with first bushings 242, 243. These first bushings allow the passage of the connecting conductors 244, 245 passing from the compartment 235 of the circuit breaker part 211 to the differential protection part 212, via the connection zone. 216.
  • Each connecting conductor 244, 245 is connected to one end of one of the primary windings 222, 223 of the phase circuit 201 and the neutral circuit 202.
  • the other ends of each of the primary windings 222, 223 are, for their part, they, connected to the output terminals 209, 210.
  • the output terminals of the differential protection device are transferred to the differential part 212.
  • the wall 241 of the compartment provided with the first bushings 242, 243 is substantially parallel to the lateral faces 205, 206 of the housing 203.
  • the connecting conductors 244, 245 and their corresponding bushings 242, 243 are located in an area of the circuit breaker part close to the connection terminals or, in other words, a remote zone separated from the breaking means.
  • the connecting conductors also pass through at least a second bushing 251 disposed on the partition 213 separating the differential protection portion 211 from the circuit breaker portion 212.
  • the second bushing 251 is disposed on the second part 215 defined above said partition 213.
  • the connecting conductors do not hinder the positioning of a connecting comb, and more particularly the housing of the teeth of such a comb-vis-à-vis -vis with the first side face in the circuit breaker part.
  • the circuit breaker portion 211 and the differential protection portion 212 further include recesses 261, 262 on the lateral faces which do not have any teeth. terminals.
  • the input and output terminals disposed on the side faces, as well as the recesses 261, 262 of each part of the device are, on each side face, spaced apart by the same distance.
  • the terminals can thus be connected electrically via a connection comb.
  • the teeth of the comb which are not electrically connected can nevertheless be accommodated in the recesses of these lateral faces.
  • the device represented on the figure 6 is another embodiment comprising most of the elements represented on the figure 5 except that the output terminal 210 is disposed on the first side face of the circuit breaker portion 211 and the other output terminal 209 is disposed on the first side face of the differential protection portion 212.
  • the terminals of the first lateral face of each part of the device are spaced apart by a wider distance than in the case shown in figure 5 .
  • these output terminals can be electrically connected through a connecting comb having a greater gap between each of the teeth of the comb.
  • the differential protection device 301 shown on the figures 7 , 8 and 9 comprises two main faces 302, a first lateral face 303, a second lateral face 304 and a front face 305.
  • a handle 306 makes it possible to actuate the moving contacts.
  • the first side face comprises, on the differential protection part, two output terminals 311, 312.
  • Each output terminal 311, 312 comprises a fixed contact piece 313, 314 against which, during connection, an electrical conductor or a tooth connecting comb is clamped through a movable contact piece, in this case a terminal cage 313, 314, controlled by the rotation of a clamping screw 317, 318.
  • the breaking means of the circuit breaker part are housed in a compartment having a wall 331 provided with first bushings 332, 333. These first bushings allow the passage of the connecting conductors passing from the compartment of the circuit breaker part to the differential protection part.
  • Each connecting conductor comprises a portion of rectangular section 335, 336 passing through the wall 331 through the first bushings 332, 333.
  • Each connecting conductor further comprises a circular section portion 337, 338 connected to each of the sectional portions. rectangular by welding or any other means of connection.
  • the connecting conductors 335, 336, 337, 338 make it possible to connect the phase and neutral circuits of the circuit breaker portion to one end of one of the primary windings of each of said circuits. The other ends of each of the primary windings are connected to the output terminals 311, 312.
  • the wall 331 of the compartment of the circuit breaker portion provided with first bushings 332, 333 is substantially parallel to the side faces 303, 304 of the housing.
  • the connecting conductors 335, 336, 337, 338 and their corresponding bushings 332, 333 are located in a zone of the remote circuit breaker part and separated from the breaking means.
  • the circular section portions 337, 338 of the connecting conductors also pass through at least one second non-visible bushing disposed on the partition 351 separating the differential protection portion of the circuit breaker portion.
  • the second bushing is disposed on a portion of said partition 351 separating the differential portion of a connection zone 352.
  • the compartment of the circuit breaker part comprises a withdrawal of the wall 331 provided with first bushings 332, 333 relative to the first side face 303 of the housing.
  • the connecting conductors 335, 336, 337, 338 are therefore housed in this connection zone 352 disposed in the withdrawal of the compartment of the circuit breaker part.
  • This removal allows the housing of the teeth of a connecting comb vis-à-vis with the side face of the circuit breaker part without electrical connection.
  • the removal may optionally be partitioned to increase the electrical isolation between the comb teeth.
  • the connecting conductors 335, 336, 337, 338 do not hinder the positioning of a connecting comb, and more particularly the housing of the teeth of such a comb.
  • the input and output terminals allow electrical connection via connection combs.
  • the differential protection device can be electrically connected by any other means known to those skilled in the art such as, for example, wire conductors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Emergency Protection Circuit Devices (AREA)
EP08354048A 2007-09-11 2008-07-01 Elektrogerät mit Differentialschutz Active EP2037477B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0706344A FR2920911B1 (fr) 2007-09-11 2007-09-11 Dispositif electrique a protection differentielle

Publications (2)

Publication Number Publication Date
EP2037477A1 true EP2037477A1 (de) 2009-03-18
EP2037477B1 EP2037477B1 (de) 2012-12-12

Family

ID=39148416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08354048A Active EP2037477B1 (de) 2007-09-11 2008-07-01 Elektrogerät mit Differentialschutz

Country Status (7)

Country Link
EP (1) EP2037477B1 (de)
CN (1) CN101388309B (de)
BR (1) BRPI0804085B1 (de)
EG (1) EG24765A (de)
ES (1) ES2398991T3 (de)
FR (1) FR2920911B1 (de)
UA (1) UA97636C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2559048A1 (de) * 2010-04-14 2013-02-20 ABB S.p.A. Fehlerstromschutzvorrichtung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBG20100062A1 (it) * 2010-11-17 2012-05-18 Abb Spa Dispositivo di commutazione elettrica.
FR2969369A1 (fr) * 2010-12-20 2012-06-22 Schneider Electric Ind Sas Appareil de protection electrique comportant la fonction de protection differentielle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512582A1 (fr) 1981-09-10 1983-03-11 Merlin Gerin Dispositif d'inviolabilite d'un disjoncteur differentiel
EP0231732A2 (de) * 1985-12-02 1987-08-12 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Fehlerstrom- und Leitungsschutzschalter
FR2715767A1 (fr) 1994-02-02 1995-08-04 Legrand Sa Disjoncteur différentiel unipolaire et neutre.
GB2295275A (en) * 1994-11-15 1996-05-22 Matsushita Electric Works Ltd Circuit breaker

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2725071B1 (fr) * 1994-09-28 1996-12-13 Schneider Electric Sa Interrupteur differentiel associe a un ou plusieurs elements de protection de circuits tels des coupe-circuits a fusibles ou disjoncteurs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512582A1 (fr) 1981-09-10 1983-03-11 Merlin Gerin Dispositif d'inviolabilite d'un disjoncteur differentiel
EP0231732A2 (de) * 1985-12-02 1987-08-12 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Fehlerstrom- und Leitungsschutzschalter
FR2715767A1 (fr) 1994-02-02 1995-08-04 Legrand Sa Disjoncteur différentiel unipolaire et neutre.
GB2295275A (en) * 1994-11-15 1996-05-22 Matsushita Electric Works Ltd Circuit breaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2559048A1 (de) * 2010-04-14 2013-02-20 ABB S.p.A. Fehlerstromschutzvorrichtung
EP2559048A4 (de) * 2010-04-14 2013-09-25 Abb Spa Fehlerstromschutzvorrichtung

Also Published As

Publication number Publication date
EP2037477B1 (de) 2012-12-12
EG24765A (en) 2010-08-03
CN101388309A (zh) 2009-03-18
BRPI0804085B1 (pt) 2020-09-29
FR2920911B1 (fr) 2010-02-19
UA97636C2 (ru) 2012-03-12
FR2920911A1 (fr) 2009-03-13
BRPI0804085A2 (pt) 2009-05-05
CN101388309B (zh) 2013-01-16
ES2398991T3 (es) 2013-03-25

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