EP0362085A1 - Schaltgerät mit Fernsteuerung - Google Patents

Schaltgerät mit Fernsteuerung Download PDF

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Publication number
EP0362085A1
EP0362085A1 EP89420351A EP89420351A EP0362085A1 EP 0362085 A1 EP0362085 A1 EP 0362085A1 EP 89420351 A EP89420351 A EP 89420351A EP 89420351 A EP89420351 A EP 89420351A EP 0362085 A1 EP0362085 A1 EP 0362085A1
Authority
EP
European Patent Office
Prior art keywords
signal
remote control
input
signals
clock
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
EP89420351A
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English (en)
French (fr)
Other versions
EP0362085B1 (de
Inventor
Jean-Luc Mertz
Hubert Guerin
Antoine Stentz
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
Publication of EP0362085A1 publication Critical patent/EP0362085A1/de
Application granted granted Critical
Publication of EP0362085B1 publication Critical patent/EP0362085B1/de
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
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • 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
    • H01H71/66—Power reset mechanisms
    • H01H2071/665—Power reset mechanisms the reset mechanism operating directly on the normal manual operator, e.g. electromagnet pushes manual release lever back into "ON" position
    • 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
    • H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
    • H01H89/08—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device with both devices using the same contact pair

Definitions

  • the invention relates to a remote control low voltage power cut device, comprising at least one movable contact movable between open and closed positions, a remote control member comprising an electromagnetic actuator with electromagnet associated with a displacement mechanism. of the movable contact, the electromagnet comprising a coil connected to a power source by means of a static switch comprising a control electrode, the remote control member comprising an electronic control circuit comprising at least one input on which remote control signals are applied and an output connected to said electrode on which it applies a first pulse in response to a remote control signal involving a change in position of the mobile contact, means for detecting the position of the mobile contact providing the electronic circuit of remote control signal represented feeling of said position.
  • Remote control devices of this type are known, for example switches or circuit breakers, operating either in remote control mode, the remote control signal then being constituted by pulses, or in contactor mode.
  • French Patent No. 2579821 describes in more detail a remote-controlled circuit breaker comprising two separate remote control inputs accessible simultaneously and one of which is assigned to a command by pulses, that is to say corresponds to an operation in remote control mode, while the The other is used for a mixed control which can correspond either to operation in contactor mode, or to operation in pilot switch mode.
  • the object of the present invention is to improve the operating reliability of the remote-controlled devices, whether they are of the remote control type and / or of the contactor type.
  • the electronic control circuit of the device comprises means making it possible to determine whether there has been a change in position of the movable contact for a predetermined period after application of the first pulse to said electrode, and means for producing a second pulse in the case where the position of the mobile contact did not change during the said period.
  • the pulses are synchronized on a clock signal, itself synchronized on the sector, the latter also supplying the coil of the electromagnet, and the time separating a first pulse from a second possible pulse is constant, of the order of a few clock periods at most.
  • the electronic control circuit comprises first means to which the remote control signals and the clock signal are applied and producing a first output signal of logic value 1 up to the first falling edge of the signal clock following a rising edge of the remote control signal, then taking the logic value 0 for a first predetermined duration, preferably during the following period of the clock signal, and again the logic value 1 for a second predetermined duration, preferably for the next period of the clock signal.
  • the electronic control circuit comprises second means to which the remote control signals, the clock signals and the signals representative of the position of the contacts are applied, and producing a signal taking the logic value 1 during a rising edge of the remote control signal, and passing to logic value 0 only after a modification of the position of the contacts, and a first AND gate to which the remote control and clock signals are applied, the signal of the first means and, on a 4th input, the output of the second means, the output of the first AND gate being formed by said first and second pulses.
  • said first means produce a second output signal of logic value 1 until the first falling edge of the clock signal following a falling edge of the control signal, taking the logic value 0 during said first predetermined duration and again the logic value 1 during said second predetermined duration
  • the electronic control circuit comprising a second AND gate to which the remote control and clock signals are applied, the first output signal of said first means and, on a 4th input, a signal complementary to the signal representative of the position of the contacts, and a third AND gate to which the clock signals are applied, a signal complementary to the remote control signal, the second output signal of said first means, and, on a 4th input, the signal representative of the position of the contacts, the output signals of the second and third th AND gate being applied to the inputs of an OR gate whose output signal is formed by said first and second pulses.
  • a selector providing said second means with a signal of value 1 for operation in contactor and a signal of value 0 for operation in remote control
  • the signals of output of said second means applied to the 4th input of the second AND gate are, in contactor function, derived from the signal complementary to the signal representative of the position of the contacts and said second means apply to the 4th input of the third AND gate, a signal of value 0 according to the remote control function and derived from the signal representative of the position of the contacts in contactor function.
  • a remote-controlled power cut device represented by the general reference 10 comprises two unipolar cut-off blocks 12, 14 or poles, attached to a remote control block 16 to constitute a modular bipolar remote control system.
  • Each pole 12,14 is housed in an individual casing made of molded insulating material and contains a cut-off mechanism of the type described in detail in French Patent No. 2,535,520.
  • the two poles 12,14 constitute the power circuit and are provided with two incoming terminals 18,20 connected to the low-voltage distribution network by two supply lines 22,24, and two starting terminals 26,28 connected to a load (not shown) by two connecting conductors 30.32.
  • the poles 12, 14 can of course be brought together in a single bipolar box. Three or four identical poles can also be juxtaposed to form a three-pole or four-pole breaking device.
  • Each pole 12,14 has a movable main contact 33 bistable actuated between the two closed and open positions of the device.
  • the remote control unit 16 is equipped with a remote control mechanism 34 (FIG. 2) intended to ensure the tilting of the movable contacts 33 from the closed position to the open position and vice versa, following a remote control command. applied to an electromagnetic actuator with electromagnet 36.
  • a magneto-thermal trip device associated with an automatic trip mechanism 38 cooperating with the movable contact 33 to move it towards the position of opening in the event of overload and / or fault, and maintain it in this position regardless of the position of the remote control mechanism 16 as long as the trigger mechanism 38 is in the triggered position.
  • a return to service requires actuation of a manual reset lever 40 of the trigger mechanism 38 to authorize in the armed position of the latter a remote-controlled closure of the device by the remote control unit 16.
  • the electromagnet 36 of the remote control unit 16 is provided with a plunger core 42 acting on a pivoting lever 44 articulated at its opposite end on a fixed point 46 of the insulating housing 48.
  • the lever 44 carries a pusher 50 cooperating mechanically with a rocker 52 mounted with limited rotation on a fixed axis 54, and with a return spring 56 in the form of a blade.
  • the rocker 52 is coupled by a connecting rod 58 to a pivoting lever 60 constituting an emergency control member intended to manually open or close the device 10.
  • the lever 60 for manual control is also connected to an arm 62 which can 'straddle in a balance (not shown) acting on the movable contacts 33 of the poles 12,14, so as to mechanically secure the balance and the rocker 52.
  • the opening and closing of the pole contacts 12, 14 can either be controlled manually by the backup handle 60, or remote-controlled by energizing the electromagnet 36 of the remote control unit. 16.
  • the electromagnet 36 At each command applied to the electromagnet 36 there is a change of state of the flip-flop 52, and the trigger mechanism 38 remains inactive during these remote-controlled maneuvers.
  • the triggering mechanism 38 causes the opening of the pole contacts 12, 14, and the displacement of the reset lever 40 towards the triggered position.
  • the movable contacts 33 are maintained in the open position independently of any remote control command. It is noted that this triggered position of the lever 40 constitutes a reliable indication of the opening of the contacts. Putting the device 10 back into service requires manual intervention to reset the lever 40 in the armed position, the device then being ready for new maneuvers controlled by the remote control mechanism 34.
  • the remote control unit 16 comprises four connection terminals CT, TL, P and N in internal connection with an electronic circuit 39 for controlling the electromagnet 36.
  • the two terminals P and N are supply terminals connected by conductors 68.70 external to an AC or DC voltage source 72, for example 220 Volts.
  • the TL input terminal is assigned to a first impulse command of the remote control type, the impulse signal being generated by the actuation of a first monostable switch or contact, in particular a push button 74, interconnected between the TL terminal and the conductor 68.
  • the CT input terminal is used for a second mixed control, which depends on the position of a selector S.
  • a second control contact 76 or switch is electrically connected between the CT terminal and conductor 68.
  • the two input terminals CT and TL are connected by their respective contacts 76, 74 to the same potential, which is that of the supply terminal P, or according to a variant, that of the other supply terminal N
  • the conductors 68.70 could be connected directly to the supply lines 22.24 of the poles 12.14, authorizing the removal of the voltage source 72.
  • the coil 36 of the electromagnet is connected to the power source (P, N) by means of a static switch 37.
  • the voltage power supply is an AC voltage, preferably a thyristor as shown in the figure.
  • any other type of static switch for example a power field effect transistor of the MOSFET type, the supply voltage which is applied thereto then being rectified if necessary.
  • the electronic control circuit 39 is intended to apply to the control electrode of the static switch 37 the appropriate signals as a function of the position of the movable contacts and of the remote control signals which are applied to it on the TL and CT inputs. It is also supplied by terminals P and N, an appropriate power supply unit (not shown) incorporated in circuit 39 providing it with the necessary DC voltages.
  • the operation of the remote control unit 16 is carried out as follows:
  • each remote control command issued by the electronic control circuit 39 to the static switch 37 causes the electromagnet 36 to be excited and a change in state of the movable main contacts 33 poles 12.14.
  • This remote control command can come either from the first command by implusions associated with the input terminal TL (closing of the push button 74), or from the second assignable command according to the state of the selector S, and associated with the terminal d 'CT input (contact 76 closed).
  • the first command corresponds to an operation of the apparatus 10 in remote control mode, each pulse applied to the input terminal TL (FIG. 4a) causing a change of state of the main contacts 33 (FIGS. 4c and 4d).
  • the contact 76 can be actuated by a clock , timer or automaton (not shown), so as to apply control slots to the CT input terminal, each slot having a width generally greater than that of the pulses of the first control (see FIG. 4).
  • the control order at the output of the electronic control circuit 39 depends on the state of the contact 76 generating the slot at the input terminal CT, and on the state of a detector 41 representing the position movable main contacts 33.
  • Such a detector can, in known manner, be formed by a relay REED, the control contact of which is actuated by a permanent magnet secured to a member for transmitting the movement of the movable main contacts, this detector being placed inside the remote control unit 16 (FIG. 3).
  • the electronic control circuit provides an order to change the position of the contacts at the static switch 37 only if the main contacts 33 are open when the control contact 76 is closed, or if the contacts 33 are closed during the opening of the contact 76.
  • the closing of the contact 76 generates a rising edge of the niche which causes the closing of the main contacts 33.
  • the opening of the contact 76 generates a falling edge of the niche which controls the opening of the main contacts 33.
  • the closing of the contact 76 in the closed position of the main contacts 33, and the opening of the contact 76 in the open position of the main contacts 33 does not cause any change in the state of the device 10 (FIGS. 4b , 4c, 4d).
  • the second input terminal (76) corresponds to an impulse input decoupled from the first command, so as to authorize a command of the pilot switch type.
  • the electronic control circuit 39 therefore applies a control signal to the control electrode of the static switch 37 when it receives a remote control signal as input implying a change in position of the movable contact, that is to say without taking account of the actual position of the contact in operation as a remote control switch and taking account of this position in operation as a contactor.
  • the electronic control circuit 39 monitors the position of the movable contact for a predetermined time after application of the position change control signal, in the form of a first pulse, to the control electrode and applies a second impulse on this electrode if the desired change of position of the movable contact has not taken place.
  • FIG. 5 corresponds to the part associated with the remote control path of an electronic control circuit 39 of an apparatus according to FIGS. 1 to 3, implementing the invention.
  • the channel shown in Figure 5 has three inputs.
  • the remote control signals A ( Figure 6c) of the remote control type (TL) are applied to the first input.
  • the second input receives a clock signal H (FIG. 6a), at the sector frequency, produced by a clock circuit (not shown) of the conventional type forming part of the electronic control circuit 39 and synchronized with the sector.
  • H clock signal
  • the third input receives the signal B representative of the position of the mobile contacts, produced by the position detector 41 associated with the mobile contacts.
  • Signal B takes the value 1 when the contacts are in the closed position and the value 0 when they are in the open position.
  • the remote control signal A is applied to the input D1 of a first flip-flop 78, of type D, the clock input of which receives the signal H (figure 6b) complementary to the clock signal H.
  • the signal Q1 (figure 6d) of output of the first flip-flop is applied to the input D2 of a second flip-flop 80, of the same type, also receiving the signal H on its clock input.
  • the output signal Q2 (FIG. 6e) of the second flip-flop is itself applied to the input D3 of a third flip-flop 82, of the same type, receiving the signal H on its clock input.
  • the output signals Q2 and Q3 ( Figures 6g and 6h) of the 2nd and 3rd flip-flops are applied to the two inputs of an EXCLUSIVE OR circuit 84, which outputs a signal C ( Figure 6i).
  • This signal C the duration of which is constant and equal, in the preferred embodiment shown, to a period of the clock signal, takes the value 1 after each rising or falling edge of the remote control signal A.
  • the duration (t1 -t3; t2-t4) separating the edge of signal A from the transition to 1 of signal C is between one and two clock periods.
  • This signal C and the signal Q1 output of the 1st flip-flop are applied to the two inputs of an OR circuit 86, the output signal D of which is represented in FIG. 6k.
  • the signal B (figure 61), output from the detector 41 (figure 3), representative of the position of the movable contacts is applied to the input D4 of a 4th flip-flop 38, of type D, receiving on its clock the signal H .
  • the output signal Q4 of the 4th flip-flop is applied to the D5 input of a 5th flip-flop 90, of type D, on the clock input of which the remote control signal A is applied.
  • the signals Q4 and Q5 ( Figures 6m and 6n) output from the 4th and 5th flip-flops are applied to the two inputs of an EXCLUSIVE OR circuit 92, the output signal E of which is shown in Figure 6o.
  • the signal E takes the value 1 at each rising edge (times t1 and t2) of the remote control signal A, whatever the position of the contacts at this instant, that is to say independently of the value of signal B. Then it returns to O at the first rising edge of the signal H following the change of position of the contacts, the output signals Q4 and Q4 of flip-flop 88 then changing value.
  • the change to 0 of the signal E after a rising edge of the remote control signal A is representative of a change in position of the movable contacts along a rising edge of the remote control signal A.
  • An AND gate 94 receiving on its inputs the signals D, A, H and E then outputs a signal F (FIG. 6p), comprising a first pulse after a rising edge of signal A.
  • the signals B are shown, Q4 , Q5 , E and F obtained on the one hand (left part, between t1 and t2) when a first pulse F1 causes a change in position of the movable contact before the 1st rising edge of signal C (t3) along the corresponding rising edge (t1 ) of the remote control signal A, and on the other hand (right part) when the change of position of the movable contact does not take place before the rising edge of the signal C (t4) following the corresponding rising edge (t2) of the signal A .
  • the signal F is, after possible calibration, applied to the control electrode of the static switch, if necessary via an adaptation circuit (not shown).
  • the second pulses may be supplied on a separate output, so as to allow different processing of the first and second pulses, in particular from the calibration point of view.
  • This can be done simply, as shown in FIG. 5, by means of an AND circuit 96 receiving the signals C and F at the input and producing at the output a signal G (FIG. 6q) comprising only the second pulses. After parallel processing of signals G and F, these are applied again to the inputs of an OR circuit (not shown), the output of which is then applied to the control electrode of the static switch.
  • FIG. 7 corresponds to the part associated with the contactor channel of an electronic circuit for controlling an apparatus according to FIGS. 1 and 2, implementing the invention. Elements and signals identical to those of the circuit according to FIG. 5 have the same references. Thus, the signals C, D and Q4 ( Figures 8c, 8d and 8h).
  • the diagram is completed by an EXCLUSIVE OR 98 whose inputs receive the signals Q2 and Q3 and providing an output signal I, which is in practice identical to the signal C. It may nevertheless be preferable to use two circuits in parallel as shown in Figure 7 to limit the number of logic circuits connected to the same output.
  • An OR circuit 100 receiving the signals I and Q1 as input provides a signal J of a shape comparable to the signal D but taking into account the pulses C formed after a falling edge of the remote control signal A and not after a rising edge of the said signal.
  • a first pulse (M1, M2) is obtained at output M after each rising edge (t5, t7) of the remote control signal A when the movable contacts are not in the position (B, FIG. 8f) corresponding to the remote control order .
  • a second pulse (M′2) is produced if the first pulse has not led to a change of position of the contacts after a predetermined time (1.5 clock periods in the shown).
  • the H signals, AT , J and Q are applied to the inputs of an AND circuit 110 whose output signal U is represented in FIG. 8j.
  • a first pulse (U1, U2) is obtained at output U after each falling edge (t6, t8) of the remote control signal A when the movable contacts are not in the requested position.
  • U′2 After production of a first pulse (U2) in U, there is as before, production of a second pulse (U′2) if the first has not led to a change of position of the contacts after a predetermined time.
  • the signals M and U are applied to the inputs of an OR circuit 112, at the output of which there are the signals V (FIG. 8k) intended for control of the static switch.
  • the second pulses can be isolated using an OR circuit 114 receiving the signals C and V at its inputs and the output of which is represented at W in FIG. 81.
  • the signal K in FIG. 7 is then identical to Q5 and the signal L becomes identical to the signal E of figure 5, while the signal Q of figure 7 is null and forces to zero the signal U of output of the circuit ET 110.
  • the output V corresponding 3 to the output F is then treated as a signal of the remote control type and the operation is identical to that of the channel shown in FIGS. 5 and 6.
  • CT input A
  • S remote control switch
  • the contactor channel can be simplified, the input S being deleted as well as the flip-flops 88.90 and the microcircuits 102.104, and 108.
  • the signal B is then applied directly, instead of the signal Q, to the 4th input of the AND circuit 110, and by means of an inverter, instead of the signal L to the 4th input of the AND circuit 106.
  • the AND gate 106 will receive the signals H, A, D and B , while the AND gate 110 will receive the signals H, AT , J and B. It is easy to verify that the output M and U signals of the ET circuits 106 and 110 are identical to those shown in Figure 8.
  • the invention is not limited to the particular embodiments shown in the figure, but it encompasses any remote-controlled device operating as a remote control switch and / or as a contactor and whose electronic control circuit makes it possible to obtain a second pulse when the first pulse did not cause a change in position of the contacts after a predetermined time.

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EP19890420351 1988-09-30 1989-09-18 Schaltgerät mit Fernsteuerung Expired - Lifetime EP0362085B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8812941 1988-09-30
FR8812941A FR2637414B1 (fr) 1988-09-30 1988-09-30 Appareil de coupure de courant a telecommande

Publications (2)

Publication Number Publication Date
EP0362085A1 true EP0362085A1 (de) 1990-04-04
EP0362085B1 EP0362085B1 (de) 1993-12-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890420351 Expired - Lifetime EP0362085B1 (de) 1988-09-30 1989-09-18 Schaltgerät mit Fernsteuerung

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EP (1) EP0362085B1 (de)
DE (1) DE68911820T2 (de)
FR (1) FR2637414B1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118091A (en) * 1959-12-10 1964-01-14 Honeywell Regulator Co Control apparatus
EP0050301A1 (de) * 1980-10-13 1982-04-28 EURO-Matsushita Electric Works Aktiengesellschaft Treiberschaltung für ein bistabiles Relais
GB2103042A (en) * 1981-07-31 1983-02-09 Diehl Gmbh & Co Electronic control circuit for a bistable relay
EP0108678A1 (de) * 1982-11-03 1984-05-16 Merlin Gerin Ferngesteuertes Stromschaltgerät
EP0199612A1 (de) * 1985-03-26 1986-10-29 Merlin Gerin Mehrpoliges Schaltgerät mit Fernsteuerung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118091A (en) * 1959-12-10 1964-01-14 Honeywell Regulator Co Control apparatus
EP0050301A1 (de) * 1980-10-13 1982-04-28 EURO-Matsushita Electric Works Aktiengesellschaft Treiberschaltung für ein bistabiles Relais
GB2103042A (en) * 1981-07-31 1983-02-09 Diehl Gmbh & Co Electronic control circuit for a bistable relay
EP0108678A1 (de) * 1982-11-03 1984-05-16 Merlin Gerin Ferngesteuertes Stromschaltgerät
EP0199612A1 (de) * 1985-03-26 1986-10-29 Merlin Gerin Mehrpoliges Schaltgerät mit Fernsteuerung

Also Published As

Publication number Publication date
EP0362085B1 (de) 1993-12-29
DE68911820T2 (de) 1994-06-16
FR2637414A1 (fr) 1990-04-06
DE68911820D1 (de) 1994-02-10
FR2637414B1 (fr) 1996-04-05

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