EP0818798B1 - Appareil électrique à protection différentielle - Google Patents

Appareil électrique à protection différentielle Download PDF

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Publication number
EP0818798B1
EP0818798B1 EP97401624A EP97401624A EP0818798B1 EP 0818798 B1 EP0818798 B1 EP 0818798B1 EP 97401624 A EP97401624 A EP 97401624A EP 97401624 A EP97401624 A EP 97401624A EP 0818798 B1 EP0818798 B1 EP 0818798B1
Authority
EP
European Patent Office
Prior art keywords
phase
neutral
insulating
circuit
electrical apparatus
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.)
Expired - Lifetime
Application number
EP97401624A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0818798A1 (fr
Inventor
Patrick Lenco
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.)
Legrand SA
Legrand SNC
Original Assignee
Legrand SA
Legrand SNC
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 Legrand SA, Legrand SNC filed Critical Legrand SA
Publication of EP0818798A1 publication Critical patent/EP0818798A1/fr
Application granted granted Critical
Publication of EP0818798B1 publication Critical patent/EP0818798B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H71/08—Terminals; Connections
    • 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
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5855—Electric connections to or between contacts; Terminals characterised by the use of a wire clamping screw or nut
    • H01H2001/5861—Box connector with a collar or lug for clamping internal rail and external conductor together by a tightening screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H2089/005—Multi-purpose combinations, e.g. LS/DI, LS/FI, of normal protective circuit breakers with known other forms of protection, e.g. earthfaults, differential, unbalance
    • 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
    • H01H71/08—Terminals; Connections
    • H01H71/082—Connections between juxtaposed circuit breakers

Definitions

  • the present invention relates generally to devices differential protection electrics of the kind comprising, in an insulating housing, a phase circuit and a neutral circuit which each extend between two terminals, one inlet, the other outlet, with, each arranged respectively on the side and on the other side of an insulating partition through which the phase and neutral each pass through a crossing, on the one hand, a breaking part, in which, on each of the phase and neutral circuits, is interposed a switch comprising at least one movable contact, and which, for controlling this movable contact, includes a circuit breaker mechanism, and, on the other hand, a differential protection part in which a transformer intervenes differential comprising a torus over which at least two windings have passed primary and a secondary winding, said primary windings being one formed by the phase circuit, the other by the neutral circuit, and said differential transformer driving, by its secondary winding, a mechanism trigger mechanically coupled with the circuit breaker mechanism the breaking part, the insulating housing comprising two parallel main faces to each other, and, perpen
  • the electrical appliance differential protection in question is more specifically a differential circuit breaker, its breaking part comprising, in association with the phase circuit, two triggers, namely a thermal, bimetal type trigger and a electromagnetic type trigger, with excitation coil, which both control the circuit breaker mechanism.
  • the input terminals and of the phase and neutral circuits extend on two opposite faces of the insulating housing, being in practice all arranged on the side of the part of cut.
  • a modular electrical device i.e. a device electric whose insulating housing is in a form general parallelepiped, with two main faces parallel, and, on the edge, a rear face, two faces side, and a front face, the input terminals intervene on one of the side faces of this insulating housing and the output terminals on the other of these.
  • the present invention generally has for object a provision which, while allowing, the benefit some standardization, and therefore a reduction in costs, to keep the general organization of the device differential protection electric described in the request French Patent No. 94,01134 mentioned above, allows also that the output terminals of the phase and neutral are on the same side of the insulating box and conduit in addition to other advantages.
  • the output terminals of the phase and neutral circuits intervene in the part of differential protection, on the other side of the toroid of the differential transformer with respect to the crossings by which these phase and neutral circuits pass through through the insulating wall, and open on the outside on the same side face of the case insulating as their input terminals.
  • the toroid of the differential transformer extends between these crossings and the output terminals.
  • the cutting part comprises, between the input terminals of the phase and neutral circuits and the remaining crossings, enough space for there to be installed, if desired, in association with the phase, at least one electromagnetic type trigger.
  • the electrical device according to the invention is then a Differential Switch.
  • the space in the cut-off part is also sufficient for it to be implanted there, if desired, a another trigger, thermal type.
  • the electrical device according to the invention is then a differential circuit breaker.
  • the arrangement according to the invention allows advantageously to carry out, with the choice, with the same basic organization, and therefore with common constituents, either a differential switch or a circuit breaker differential.
  • this differential switch can also very simply result from a residual current device whose trip device thermal type has been eliminated or deactivated, deactivation which can for example result from a simple cutting of the active end of its bimetallic strip.
  • this cover can advantageously present each time the same dimensions, only being placed accordingly the holes giving access to the cable entries of the input and output terminals of the phase and neutral circuits and those giving access to the head of their clamping screws.
  • these input and output terminals acting on the same side face of the insulating housing, it is planned, in the vicinity of the holes giving access to the head of their tightening screws, a mark to distinguish those of these terminals which are the input terminals and those which are the output terminals.
  • the torus of the differential transformer belongs to a subset to which also belong, on the one hand, the windings of the phase and neutral circuits passed on this torus, and, on the other hand, a terminal block comprising, in a body insulation which is flush with the corresponding side face of the insulating box, the output terminals of the phase circuits and neutral, already connected, each respectively, to primary windings of these.
  • This electrical appliance 10 comprises, overall, in an insulating housing 11, a phase circuit 12P and a circuit of neutral 12N which each extend between two terminals, one input 13P, 13N, the other output 14P, 14N, with, arranged each on each side of a partition insulator 15 through which the 12P phase circuits and neutral 12N each pass through a crossing 16P, 16N, a breaking part 18 and a protection part differential 19, which will be detailed later.
  • the electrical apparatus 10 falling, in practice, from modular electrical appliances, its insulating housing 11 has a general parallelepiped shape, with two main faces 20 parallel to each other, and, perpendicular to these main faces 20, on the edge of the assembly, one face rear 21, two lateral faces 22 parallel to each other, and a front face 23 which, in its median zone, forms a front extension 24, with, on either side thereof, two shoulders 25 parallel to the rear face 21.
  • the insulating housing 11 includes a base 26, which forms one of its main faces 20, and a cover 27, which forms the other of its main faces 20 and the face before 23.
  • the rear face 21 has a notch 28, through which the electrical appliance 10 is suitable to be engaged on any support rail, not represented, and in which means intervene attachment, also not shown, specific to its securing to this support rail.
  • the partition insulator 15 extends parallel to the main faces 20, to each other of the side faces 22, but on a fraction only from the height of these from the face rear 21.
  • the insulating partition 15 extends to the shoulders 25 of the front 23.
  • the crossings 16P, 16N which pass through the partition insulating 15 are for example constituted by parts metal bends at right angles, these metal parts each having a leg 30, through which they pass the insulating partition 15 substantially perpendicular to this, and a wing 31, which extends parallel to this insulating partition 15 in the differential protection part 19.
  • the input terminals 13P, 13N of the phase circuits 12P and neutral 12N intervene in the cut-off part 18, by opening to the outside on one of the side faces 22 of the insulating housing 11.
  • the housing insulator 11 comprises, on the one hand, on its lateral face 22 concerned, two holes 32P, 32N, which each give respectively access to the cable entries of the input terminals 13P, 13N, and, on the other hand, on the corresponding shoulder 25 of the front face 23, two holes 33P, 33N, which, in turn, give each respectively access to the head of the tightening screw 34P, 34N of these input terminals 13P, 13N.
  • phase circuits 12P and neutral 12N consist of conductive elements, which generally extend from input terminals 13P, 13N to crossings 16P, 16N, and which, of conventional construction, do not will not be detailed here.
  • a 35P, 35N switch comprising at least one movable contact 36P, 36N, and, for controlling this mobile contact 36P, 36N, the cutting part 18 comprises, as shown diagrammatically in lines interrupted by its outline in Figure 2, a mechanism circuit breaker 38.
  • this circuit breaker mechanism 38 is under control, in particular, of an interlock lever and trigger 39, which, projecting from the extension front 24 of the front face 23 of the insulating housing 11, is at available to the user.
  • a differential transformer 40 comprising a torus 41 over which, on the one hand, two primary windings 42P, 42N, one formed by the phase circuit 12P, the other by the neutral circuit 12N, and, on the other hand, as partially visible in Figure 1 and as shown in dashed lines in Figure 2, a secondary winding 43.
  • the transformer differential 40 drives a trigger mechanism 44, which is mechanically coupled to the circuit breaker mechanism 38 of the cutting part 18, through the insulating partition 15, and which, like this one, was only schematized in lines interrupted by its outline in Figure 2.
  • the output terminals 14P, 14N of the 12P phase and 12N neutral circuits are involved in the differential protection part 19, on the other side of the toroid 41 of the differential transformer 40 with respect to the bushings 16P, 16N by which these 12P phase and neutral circuits 12N pass through the insulating partition 15.
  • the torus 41 of differential transformer 40 extends between bushings 16P, 16N and the output terminals 14P, 14N.
  • the output terminals 14P, 14N of 12P phase and 12N neutral circuits can advantageously lead to the same lateral face 22 of the insulating housing 11 as their input terminals 13P, 13N.
  • the insulating housing 11 therefore comprises, as previously, but on the protective part side differential 19, on the one hand, on its lateral face 22 concerned, two holes 45P, 45N, which each give respectively access to the cable entries of the output terminals 14P, 14N, and, on the other hand, on the corresponding shoulder 25 from the front face 23, two holes 46P, 46N which, in turn, give access to the head of the clamping screw 47P, 47N from these terminals exit 14P, 14N.
  • the holes 32P, 45P extend on the same level, and, similarly, the holes 32N, 45N, which are offset from the previous ones by direction of the rear face 21, also extend to the same level.
  • the insulating housing 11 includes marks 48E, 48S for distinguishing the input terminals 13P, 13N of the output terminals 14P, 14N.
  • these marks 48E, 48S are constituted by arrows, which are carried by the shoulder 25 of the front face 23 on which open holes 33P, 33N and 46P, 46N.
  • the insulating housing 11 present, externally, projecting on its side face 22 concerned, between the input terminals 13P, 13N and the output terminals 14P, 14N, and, therefore, between the holes 32P, 32N and 45P, 45N corresponding, a partition wall 49.
  • this wall of partition 49 is in one piece with the insulating partition 15.
  • the wall of separation 49 only extends over a fraction of the height of this lateral face 22, limited to the portion thereof with holes 32P, 32N and 45P, 45N.
  • the toroid 41 of the transformer differential 40 belongs to a subset 50 to which also belong, on the one hand, to the windings primary 42P, 42N of 12P phase and 12N neutral circuits passed on this toroid 41, and, on the other hand, a terminal block 51 comprising, in an insulating body 52 which is flush with the face side 22 concerned of the insulating housing 11, the terminals of 14P, 14N output of these 12P phase and 12N neutral circuits, already connected each respectively to these windings primary 42P, 42N.
  • the secondary winding 43 of the differential transformer 40 can also be part of this subset 50.
  • the insulating body 52 of the terminal block 51 is sandwiched between, on the one hand, the insulating partition 15, and, on the other hand, the cover 27 of the insulating housing 11, and it therefore has two main faces 53, which, generally parallel one to the other, are parallel to the main faces 20 of the housing insulator 11.
  • the exit 14P, 14N are of classical constitution, and they do not will therefore not be described in detail here.
  • the fixed contact piece 55P forms, at its internal end, i.e. on the side of the torus 41 of the differential transformer 40, a range 57P, 57N per which it is clamped on the corresponding end, suitably stripped, from primary winding 42P, 42N concerned of this differential transformer 40.
  • the primary windings 42P, 42N are simply welded on bushings 16P, 16N.
  • the cutting part 18 comprises, between the input terminal 13P of the phase circuit 12P and the crossing 16P by which this phase circuit 12P passes through through the insulating partition 15, a space 58 sufficient for that it can be installed there, if desired, in association with the phase circuit 12P, and as shown in lines continuous in FIG. 2, at least one trigger 59, of the type electromagnetic, which, as shown in lines interrupted in Figure 2, is able to intervene on the circuit breaker mechanism 38, for control thereof leading to the opening of switches 35P, 35N.
  • the electrical device 10 according to the invention When the electrical device 10 according to the invention is thus equipped with a trip device 59 of the electromagnetic type, even when it is not, it constitutes a simple Differential Switch.
  • the space 58 in the part of break 18 of the electrical device 10 according to the invention is sufficient so that between the input terminal 13P of the phase 12P and the corresponding crossing 16P thereof, can also be installed, if desired, in association with this phase circuit 12P, another trip device 60, of the type thermal, which, in parallel to the trigger 59 of the type electromagnetic, also controls the circuit breaker mechanism 38 for a command thereof leading to the opening of switches 35P, 35N.
  • This thermal type trigger 60 is also well known by itself, it will therefore not be described here.
  • the electrical device 10 according to the invention When the electrical device 10 according to the invention is thus fitted with an electromagnetic release 59 and a thermal type trigger 60, it constitutes a differential circuit breaker.
  • this differential switch can result from a differential circuit breaker whose trip unit 60 thermal type has been removed or disabled.
  • the insulating housing 11 of the electrical device 10 according to the invention can advantageously be devoid, on its opposite side face 22 to that on which the terminals open out input 13P, 13N and output 14P, 14N of the phase circuits 12P and neutral 12N, and at least to the right of the part of cut 18, of any hole likely to provide any access to any terminal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Control Of Electric Motors In General (AREA)
  • Protection Of Transformers (AREA)
  • Insulators (AREA)
  • Cable Accessories (AREA)
EP97401624A 1996-07-11 1997-07-08 Appareil électrique à protection différentielle Expired - Lifetime EP0818798B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9608680 1996-07-11
FR9608680A FR2751125B1 (fr) 1996-07-11 1996-07-11 Appareil electrique a protection differentielle

Publications (2)

Publication Number Publication Date
EP0818798A1 EP0818798A1 (fr) 1998-01-14
EP0818798B1 true EP0818798B1 (fr) 2002-03-27

Family

ID=9493948

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97401624A Expired - Lifetime EP0818798B1 (fr) 1996-07-11 1997-07-08 Appareil électrique à protection différentielle

Country Status (6)

Country Link
EP (1) EP0818798B1 (pl)
CN (1) CN1097277C (pl)
AT (1) ATE215262T1 (pl)
ES (1) ES2170926T3 (pl)
FR (1) FR2751125B1 (pl)
PL (1) PL184297B1 (pl)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HK1052830A2 (en) * 2003-02-26 2003-09-05 Intexact Technologies Ltd An integrated programmable system for controlling the operation of electrical and/or electronic appliances of a premises
DE102005050318B3 (de) * 2005-10-20 2007-03-15 Siemens Ag Wandlereinheit und Vorrichtung zur allstromsensitiven Erfassung eines elektrischen Differenzstromes
FR2930838B1 (fr) * 2008-05-05 2010-04-16 Schneider Electric Ind Sas Dispositif electrique modulaire
DE102010034102B4 (de) * 2010-08-12 2017-04-13 Siemens Aktiengesellschaft Elektroinstallationsgerät mit Summenstromwandler
FR3072179B1 (fr) * 2017-10-11 2020-10-09 Schneider Electric Ind Sas Module de detection d'un defaut electrique pour un ensemble de protection electrique et ensemble de protection electrique comprenant un tel module de detection

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7614248A (nl) * 1976-12-22 1978-06-26 Nl Weber Mij Stelsel voor beveiliging van een elektrische installatie in een gebouw.
DE7811589U1 (de) * 1978-04-18 1979-10-11 Schiele Kg, 7746 Hornberg Schutzschalter
FR2588998B1 (fr) * 1985-10-18 1987-12-11 Merlin Gerin Cache-vis d'un appareil electrique modulaire a boitier moule
ES2064837T3 (es) * 1991-09-02 1995-02-01 Siemens Ag Interruptor de proteccion de corriente de defecto.
FR2715767B1 (fr) * 1994-02-02 1996-04-26 Legrand Sa Disjoncteur différentiel unipolaire et neutre.
US5446431A (en) * 1994-04-28 1995-08-29 Square D Company Ground fault module conductors and base therefor
DE4417897A1 (de) * 1994-05-21 1995-11-23 Condor Werke Gebr Frede Gmbh & Verfahren zur Baugruppenmontage eines Summenstromwandlers

Also Published As

Publication number Publication date
EP0818798A1 (fr) 1998-01-14
FR2751125A1 (fr) 1998-01-16
CN1175073A (zh) 1998-03-04
FR2751125B1 (fr) 1998-10-23
PL320782A1 (en) 1998-01-19
CN1097277C (zh) 2002-12-25
PL184297B1 (pl) 2002-09-30
ATE215262T1 (de) 2002-04-15
ES2170926T3 (es) 2002-08-16

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