EP0275750B1 - Interrupteur différentiel bipolaire à indicateur de défaut - Google Patents

Interrupteur différentiel bipolaire à indicateur de défaut Download PDF

Info

Publication number
EP0275750B1
EP0275750B1 EP87402848A EP87402848A EP0275750B1 EP 0275750 B1 EP0275750 B1 EP 0275750B1 EP 87402848 A EP87402848 A EP 87402848A EP 87402848 A EP87402848 A EP 87402848A EP 0275750 B1 EP0275750 B1 EP 0275750B1
Authority
EP
European Patent Office
Prior art keywords
differential
lever
relay
indicator
trip
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
EP87402848A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0275750A1 (fr
Inventor
Jacques Servant
Didier Dumont
Jacques Vallot
Michel Bonniau
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 Merlin Gerin SA filed Critical Merlin Gerin SA
Priority to AT87402848T priority Critical patent/ATE102389T1/de
Publication of EP0275750A1 publication Critical patent/EP0275750A1/fr
Application granted granted Critical
Publication of EP0275750B1 publication Critical patent/EP0275750B1/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
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • 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
    • H01H71/04—Means for indicating condition of the switching device
    • 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
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • H01H2083/045—Auxiliary switch opening testing circuit in synchronism with the main circuit
    • 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Definitions

  • a known device of the kind mentioned is described in documents FR-A-2,530,073 and EP-A-99,786 of the applicant. It is a differential trip switch integrated in the same housing.
  • Such an apparatus consists in interrupting an electrical circuit, either manually by the two-position joystick, or automatically in the event of an insulation fault greater than a predetermined threshold.
  • the opening of the switch poles is indicated by the position of the pivoting lever visible from the front panel, or by a mechanical indicator fixed to the contacts. This type of signaling is unable to distinguish between manual opening or opening on fault of the switch.
  • Document FR-A-2.437.692 of the applicant relates to a modular differential circuit breaker formed by the side-by-side assembly of a circuit breaker block and a differential trip block, the latter being equipped with a differential trip indicator light .
  • a sliding drawer of the trip unit is controlled by the differential relay and simultaneously actuates the trip bar of the circuit breaker mechanism by a first mechanical connection and the indicator lever lock.
  • the relay is reset automatically during the opening of the contacts by a second mechanical reset link formed by the coupling of the circuit breaker handle to a cam of the trip unit.
  • the presence of this second mechanical link lengthens the kinematic chain between the relay and the mechanism of the circuit breaker block, and imposes a certain delay for the transmission of the reset force of the relay and movement of the differential indicator to the active position.
  • Document DE-A-1.538.334 relates to a one-piece differential switch having a manual reset button for the control mechanism.
  • the object according to the invention consists in making a bipolar differential switch with reduced overall dimensions enabling unequivocal signaling of the differential trip.
  • the switch according to the invention is characterized in that the switch further comprises a differential trip indicator lever forming part of a differential fault indicator device, said indicator lever cooperating with hooking with a signaling latch controlled by the relay, said indicator lever being capable of occupying either a stable active position for signaling the fault after disengaging the signaling lock by the relay, or a stable inactive position after reclosing the signaling lock operated by manual movement of the lever towards the closed position that the relay cooperates during tripping with the main latch of the mechanism, and with the signaling latch of the indicator lever via a common trigger bar that the relay is placed side by side with the control mechanism in the housing, and that after resetting of the relay a projection of the driving member of the movable contacts engages during the closing stroke of the lever, with the resetting lever to move it against the restoring force of a resetting spring towards a neutralization position, authorizing another triggering by the differential trigger.
  • the side by side arrangement of the tripping relay of the differential tripping indicator and the control mechanism makes it possible to use a common tripping bar, the opposite ends of which cooperate with a main latch of the mechanism, and a latch for signaling the indicator.
  • the automatic reset action of the relay is automatically controlled upon opening by the return spring of the reset lever, while the neutralization of the latter after reset of the relay occurs in the actual position of closing of the movable contacts.
  • the movable phase and neutral contacts are carried by two insulating support arms secured to a pivoting plate constituting the drive member.
  • the protrusion of the plate causes the indicator lever to move from the active position to the inactive position during closing.
  • the differential switch is advantageously equipped with an abrupt engagement device.
  • the bipolar differential switch 10 is housed in a parallelepipedal housing 12, made of molded insulating material, formed by the assembly of a base 16 and a cover 14 fixed one to the other. 'other by two fixing screws 18, 20.
  • the differential switch can be connected in a single-phase alternating network with neutral by means of two pairs of terminals 22, 24; 26, 28 for connection, inserted into cells 30 arranged at the four opposite angles of the base 16.
  • the input 24 and output 22 terminals are part of a phase circuit (36) in connection with the phase conductor L , while the input 28 and output 26 terminals belong to a neutral circuit 38 in connection with the neutral conductor N.
  • the two input terminals 24 and 28 are arranged side by side along the narrow face 34 connection, and the two output terminals (22, 26) juxtaposed extend along the opposite narrow face 32 of connection.
  • the bottom 39 of the base 16 can be snapped onto a symmetrical DIN rail by means of a fixing member 40.
  • the front face of the cover 14 is provided with a passage opening for a pivoting control lever 42, and a housing opening a test button 44 to verify the proper functioning of the differential release 46.
  • the phase circuit 36 includes a fixed contact 48 fixed on an extension of the conductive pad in U passing through the cage of the input terminal 24, and a movable contact 50 of phase carried by an insulating support arm 52 mounted on an axis 54 articulation secured to a pivoting plate 56.
  • the movable contact 50 of phase is connected by a braid 58 to one of the ends of a primary winding 60 comprising one or more turns wound on the O-ring of a differential transformer or totalizer 62.
  • the output terminal 22 is connected at the opposite end of the primary winding 60.
  • the neutral circuit 38 has a similar structure comprising the input terminal 28 serving to support a fixed contact 64 capable of cooperating with a movable neutral contact 66 carried by an insulating support arm 68, mounted with the support arm 52 adjacent to the common axis 54.
  • the movable neutral contact 66 is connected by a conductive braid 70 to the second primary winding 72 of the differential transformer 62, and to the output terminal 26.
  • the differential transformer 62 and the two circuits 36, 38, phase and neutral are housed individually in independent compartments 74, 76, 78, respectively subdivided inside the base 16 by insulating walls 80, 82, 84 of seperation.
  • the two longitudinal internal walls 80, 82 extend in a direction parallel to the large lateral faces 86, 88, opposite the housing to confine in the width direction in addition to the two compartments 74, 76, for housing the circuits 36, 38, phase and neutral, an additional compartment 90 for the installation of the test resistor 92 of the test circuit 94 associated with the differential trip device 46.
  • the compartment 76 of the neutral circuit 38 is interposed between the two compartments 74, 90 of phase circuit 36 and of resistor 92.
  • the two walls 80, 82 are arranged over a fraction of the length of the base 16 up to the zone of contact with the third transverse intermediate wall 84 extending perpendicularly at the bottom 39 to the separation plane of the base 16 with the cover 14.
  • the orifice of the toroid of the differential transformer 62 extends in the longitudinal direction of the poles.
  • the inside of the cover 14 contains the control mechanism 96, a relay 98 for triggering the differential trip device 46, and a device 100 for indicating a differential fault.
  • the control mechanism 96 ( Figures 1 and 3) is located between two plates 102, 104, above compartment 74 of the phase circuit 36 and compartment 78 of the differential transformer 62, and is common to the two movable contacts 50, 66 phase and neutral.
  • the axis 54 of articulation of the support arms 52, 68, of the movable contacts 50, 66, is carried by the plate 56 pivotally mounted on a fixed axis 106 secured to one or two plates 102, 104.
  • a spring 110 for opening the control mechanism 96 is formed by a compression spring inserted between a fixed stop and the plate 56, the latter being biased in rotation on the axis 106 in the opening direction of the contacts. movable, in the direction of rotation of the needles of a watch in FIG. 1.
  • the plate 56 is equipped with a retaining lug 112 intended to cooperate with the ends of the arms supports 52, 68, so as to form a mechanical connection with the movable contacts 50, 66.
  • the plate 56 cooperates with a drive and locking device comprising an axis 114 of transmission capable of struggling in a light 116 formed in the plate 56.
  • the axis 114 is formed by the curved end of a link 118 whose opposite end is articulated to the pivoting lever 42 for manual control, so as to constitute a toggle.
  • a locking hook 120 is mounted for rotation on a fixed axis 122, and on the one hand has a stop surface 124 limiting the movement of the axis 114 in the slot 116 in the locking position shown in FIG.
  • a hooking spout 126 cooperating with a latch 128 pivotally mounted on a fixed axis 130.
  • a return spring 132 of the spiral type surrounds the axis 122 and biases the lock 128 and the hooking spout 126 in the locked position.
  • the handle 42 mounted with limited pivoting on an axis 134, is biased in the open position (FIG. 1) by a spring 136.
  • the lock 128 can be moved against the return force of the spring 132 towards a position release release of the hooking spout 126, during the intervention of the relay 98 of the differential release 46.
  • the hook 120 then pivots clockwise in FIG.
  • the relay 98 of the differential release 46 and the fault indicating device 100 differential are arranged on the same side of the plate 104 opposite the control mechanism 96.
  • the relay 98 is of the polarized permanent magnet type, comprising an excitation coil in electrical connection with the secondary winding 140 of the differential transformer 62.
  • the movable pallet of the relay 98 can cooperate (see arrow F 1) with a trip bar 142 capable of actuating the lock 128 towards the triggered position, upon the appearance of a differential fault.
  • An auxiliary lever 144 for resetting the relay 98 is pivotally mounted on an axis 146, and is biased counterclockwise (see arrow F 2) by a resetting spring 148 of the torsion type.
  • the pivoting plate 56 of the control mechanism 96 is equipped with a neutralization projection 150 (see FIG. 1), intended to cooperate with the reset lever 144 during the closing operation by the handle 42, so as to spread the lever 144 of the pallet after resetting of relay 98.
  • an indicator lever 152 On the same axis 146 of the reset lever 144 is mounted an indicator lever 152 having one end arranged by seeing 154 fault signaling mechanical, and an opposite end carrying a hooking spout 156 cooperating with a signaling latch 158, mounted at limited rotation on an axis 160.
  • a return spring 162 is threaded on the axis 160 and biases the signaling lock 158 in an anticlockwise direction.
  • the classic electrical circuit diagram of the test circuit 94 (see FIG. 5) comprises in series, the resistor 92 for simulating the differential fault, a test switch 166 actuated by the test button 44, and a protection switch 168 automatically opening the test circuit 94 when opening the movable contacts 50, 66, of the switch 10.
  • the connection test circuit 94 is made at a first connection point 170, located between the movable neutral contact 66 and the toroid, and at a second connection point 172 formed between the toroid and the output terminal 22 of the phase circuit 36.
  • the embodiment of the test circuit 94 illustrated in FIGS. 3 and 4 shows the housing of the test push button 44 in a cavity 174 of the insulating cover 14.
  • a compression return spring 176 is inserted between the test button 44 and the bottom of the cavity 174.
  • the test button 44 carries a pair of contact blades 178, 180, of different lengths, the longest 178 cooperating with a ramp 182 of the movable contact 66 of neutral, and the shortest 180 with a conductor 184 for connection of the resistor 92. It is noted that the blade 178 and the ramp 182 constitute the protective switch 168, and that the blade 180 and the conductor 184 form the test switch 166.
  • the depressing of the push button 44 causes the simultaneous closing of the two switches 166, 168, causing the circulation of an artificial fault current detected by the differential transformer 62.
  • the interruption of the current in the test circuit 94 takes place when the movable neutral contact 66 is opened by spreading the ramp 182 with the blade 178, even if the test button 44 remains in the depressed position.
  • the appearance on the network of a real or artificial insulation fault by the test circuit 94 is detected by the differential transformer which sends a trip order to relay 98 of the differential trip device 46.
  • the movement of the pallet causes the trip bar 142 to translate to the left (arrow F1 in FIG. 4), causing a combined unlocking movement of the main lock 128 and the signaling lock 158.
  • the manual movement of the lever 42 from the open position to the closed position ensures the closing of the contacts 48, 50; 64, 66, moves the reset lever 144 of the relay 98 to a neutralization position, and returns the indicator lever 152 to the inactive position.
  • This control of the levers 144, 152 intervenes by the direct action of the projection 150 of the plate 56, the position of which corresponds to the actual position of the movable contacts 50, 66.
  • the bipolar differential switch 10 can be used in a single-phase network with neutral, or on two phases of a multipolar network.
  • the range covers the ranges from 25 A to 63 A, and the sensitivities of the differential release 46 can range between 10 mA and 500 mA in classes AC and A.
  • the bipolar differential switch is equipped with an abrupt engagement device 200 comprising a latching lever 202 mounted with limited pivoting on a fixed axis 204 of the plates 102, 104.
  • the lever latching 202 retains the end of the support arm 52 during a first part of the closing stroke of the lever 42.
  • the pivoting plate 56 acts on a ramp 206 for unlocking the latching lever 202 so as to lift it and free the support arm 52 to ensure the abrupt closure of the movable contact 50 phase.
  • a return spring biases the latching lever 202 towards the holding position of the support arm 52.

Landscapes

  • Breakers (AREA)
  • Amplifiers (AREA)
  • Analogue/Digital Conversion (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Electronic Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Projection Apparatus (AREA)
EP87402848A 1986-12-29 1987-12-14 Interrupteur différentiel bipolaire à indicateur de défaut Expired - Lifetime EP0275750B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87402848T ATE102389T1 (de) 1986-12-29 1987-12-14 Zweipoliger differentialunterbrecher mit fehleranzeige.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8618401A FR2609209B1 (fr) 1986-12-29 1986-12-29 Interrupteur differentiel bipolaire a indicateur de defaut
FR8618401 1986-12-29

Publications (2)

Publication Number Publication Date
EP0275750A1 EP0275750A1 (fr) 1988-07-27
EP0275750B1 true EP0275750B1 (fr) 1994-03-02

Family

ID=9342467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87402848A Expired - Lifetime EP0275750B1 (fr) 1986-12-29 1987-12-14 Interrupteur différentiel bipolaire à indicateur de défaut

Country Status (9)

Country Link
EP (1) EP0275750B1 (pt)
AT (1) ATE102389T1 (pt)
DE (1) DE3789222T2 (pt)
ES (1) ES2051763T3 (pt)
FR (1) FR2609209B1 (pt)
IN (1) IN170533B (pt)
PT (1) PT86430B (pt)
TN (1) TNSN87145A1 (pt)
YU (1) YU47277B (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2640423B1 (fr) * 1988-12-14 1991-10-04 Merlin Gerin Mecanisme de commande d'un interrupteur differentiel multipolaire a barreau rotatif de commutation
KR900015203A (ko) * 1989-03-10 1990-10-26 시끼 모리야 누전경보기능부 회로차단기
DE4211915C2 (de) * 1992-04-09 1995-03-16 Abb Patent Gmbh Prüftastenanordnung für einen Fehlerstrom- oder Differenzstromschutzschalter
FR2767602B1 (fr) * 1997-08-25 2002-12-06 Schneider Electric Sa Dispositif de signalisation d'un defaut electrique dans un dispositif de coupure tel un interrupteur differentiel
ES2157161B1 (es) * 1999-07-15 2002-02-16 Power Controls Iberica Sl Mecanismo de disparo para interruptores automaticos.
US20180027597A1 (en) * 2015-01-22 2018-01-25 Lg Electronics Inc. Method and apparatus for uplink transmission in an unlicensed band
CN107359086B (zh) * 2016-05-10 2019-11-29 上海诺雅克电气有限公司 断路器的故障指示辅助触头
FR3121271B1 (fr) * 2021-03-26 2023-03-31 Schneider Electric Ind Sas Dispositif de protection électrique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437692A1 (fr) * 1978-09-28 1980-04-25 Merlin Gerin Dispositif de protection differentielle a bloc differentiel accouple au bloc disjoncteur
FR2530073A1 (fr) * 1982-07-12 1984-01-13 Merlin Gerin Interrupteur differentiel bipolaire

Also Published As

Publication number Publication date
IN170533B (pt) 1992-04-11
FR2609209A1 (fr) 1988-07-01
YU238987A (en) 1990-06-30
YU47277B (sh) 1995-01-31
PT86430B (pt) 1994-03-31
DE3789222D1 (de) 1994-04-07
ES2051763T3 (es) 1994-07-01
DE3789222T2 (de) 1994-08-04
FR2609209B1 (fr) 1994-05-20
ATE102389T1 (de) 1994-03-15
PT86430A (pt) 1989-01-17
EP0275750A1 (fr) 1988-07-27
TNSN87145A1 (fr) 1990-01-01

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