EP3555901A1 - Ensemble d'un interrupteur et d'une unite auxiliaire - Google Patents
Ensemble d'un interrupteur et d'une unite auxiliaireInfo
- Publication number
- EP3555901A1 EP3555901A1 EP17825905.7A EP17825905A EP3555901A1 EP 3555901 A1 EP3555901 A1 EP 3555901A1 EP 17825905 A EP17825905 A EP 17825905A EP 3555901 A1 EP3555901 A1 EP 3555901A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- state
- control circuit
- receiver
- auxiliary unit
- 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
Links
- 230000004913 activation Effects 0.000 claims abstract description 20
- 230000007257 malfunction Effects 0.000 claims abstract description 13
- 230000005855 radiation Effects 0.000 claims abstract description 5
- 230000005284 excitation Effects 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 3
- 230000005670 electromagnetic radiation Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
- H01H71/125—Automatic release mechanisms with or without manual release using a solid-state trip unit characterised by sensing elements, e.g. current transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
-
- 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
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
- H01H71/0228—Mounting or assembling the different parts of the circuit breaker having provisions for interchangeable or replaceable parts
Definitions
- the present invention relates to an assembly of a switch and an auxiliary unit juxtaposed to one another, which switch is arranged to be connected between a first state where an electric current on a line of electrical current on which the switch would be placed can cross the switch and a second state where said electric current is interrupted by the switch, which switch is also arranged to connect to the second state in case of finding a malfunction on this line of conduct of electric current, which auxiliary unit comprises an actuator arranged to actuate the switch.
- the switch and its auxiliary unit are generally mounted in an electrical distribution cabinet of a building.
- the switch is essentially used to cut the flow of current on the line in case of malfunction or where an interruption of the electric current is desired, for example to perform work.
- the auxiliary unit can be coupled to the switch in order to provide the assembly with an additional function, such as for example an auxiliary contact which makes it possible to recover the information of the connection state of the switch, or as a additional protection that allows the auxiliary unit to control the tripping of the switch in the event of a malfunction on the line, or as a resetting device capable of resetting the switch after it has been connected to the second state.
- the auxiliary unit must have an actuator and a mechanical connection piece that makes it possible to trigger the assembly.
- a problem of this solution is that it requires that the switch has enough strength to be able to ensure its trigger. Especially when the switch is already old, mechanical wear can weaken this force. Moreover dust, which would be introduced by the mechanical connection between the switch and the auxiliary unit, will cause a mechanical resistance that will oppose the passage of the switch from one state to another. The force thus required to change the state of the switch and overcome the mechanical resistance caused by the presence of dust may be of the order of three to four Newton, and may be greater than the force stored in the spring switch, especially if the spring has already been worn.
- the invention aims to provide a set of a switch and an auxiliary unit where the force to ensure the triggering of the switch remains, even after the switch is already a few years in use, such as the force stored in the spring of the switch can always trigger the switch.
- an assembly according to the invention is characterized in that the actuator comprises a transmitter-generator arranged to produce an activation signal and transmit it by radiation to the switch, which switch comprises a receiver arranged to receive the signal. activation and convert it into a state change of the switch from the state where it is to its other state.
- the receiver is arranged to receive the activation signal and convert it into a change of state of the switch from the first state to the second state.
- the receiver is arranged to receive the activation signal and convert it into a change of state of the switch of the second state to the first state.
- the activation signal is transmitted by radiation to the switch and that the latter comprises a receiver arranged to receive the activation signal, has the consequence that a mechanical connection is no longer necessary between the switch and the auxiliary unit.
- the dust has virtually no access to the trigger mechanism of the switch and can therefore almost no longer form a mechanical resistance that will oppose the triggering force.
- the switch is arranged to convert the received activation signal into a change from the state where it is to its other state, the switch will be able to change state without there being a mechanical connection between the switch and the auxiliary unit.
- the generator-transmitter of the actuator of the auxiliary unit acts remotely on the receiver of the switch.
- a first preferred embodiment of an assembly according to the invention is characterized in that the switch comprises a current measurement toroid, which generator-transmitter comprises a first electromagnet arranged to produce the activation signal in form. a magnetic field to induce in the measuring torus.
- the switches such as for example differential circuit breakers, which already have a measurement toroid
- the use of a first electromagnet will make it possible to produce the activation signal in the form of a magnetic field which will be induced in the measuring torus.
- the measurement torus will feel this magnetic field that will produce a current in the torus, which current exceeds a threshold value to trigger the switch.
- the torus will then react in the same way as if it had noticed a malfunction. This therefore allows a reliable and inexpensive realization of the generator-transmitter.
- a second preferred embodiment of an assembly according to the invention is characterized in that the generator-transmitter comprises an excitation coil connected to a first control circuit arranged to provide the coil with an electrical power supply during a period predetermined time and thereby produce an excitation field, which receiver comprises an auxiliary switch connected to an input of a second control circuit, which auxiliary switch is arranged to release, after receiving the excitation field, a control signal and supply it to the second control circuit, which receiver also comprises a trigger member connected to an output of the second control circuit, which second circuit of control is arranged to activate trigger member after receiving the control signal, which trigger member is arranged to trigger the switch.
- a third preferred embodiment of an assembly according to the invention is characterized in that the switch comprises a closing and opening mechanism, said receiver being placed on the closing and opening mechanism.
- the receiver can be directly controlled.
- a fourth preferred embodiment of an assembly according to the invention is characterized in that the receiver is formed by a steel piece and the generator-transmitter by a magnet or an electromagnet arranged to produce the activation signal under shape of a magnetic field to induce in the steel piece, which magnet or electromagnet is mounted on a guide aligned with a path followed by the closing mechanism and opening when closing and opening the 'light switch. It is thus possible to control the closing and opening mechanism from the auxiliary unit without mechanical connection.
- the generator-transmitter comprises a light source connected to a third control circuit arranged to supply the light source with an electrical power supply during a period of time.
- receiver comprises an opto-coupler connected to a control input of a fourth control circuit, which opto-coupler is arranged to release after reception of the light beam another control signal and supplying it to said input of the fourth control circuit, which receiver also comprises a triggering member connected to an output of the fourth control circuit, which fourth control circuit is arranged to activate the triggering member after receiving the other control signal, which triggering member is arranged to r trigger the switch. This allows optical communication between the switch and the auxiliary unit.
- Figure 1 illustrates an assembly of a switch and an auxiliary unit
- Figure 2 shows a graph showing the force required to trigger the switch
- FIG. 3 illustrates a first embodiment of an assembly according to the invention
- FIG. 4 illustrates a second embodiment of an assembly according to the invention.
- FIGS. 5 and 6 illustrate a third embodiment of an assembly according to the invention.
- the same reference has been assigned to the same element or a similar element.
- Figure 1 illustrates an assembly 1 of a switch 2 and an auxiliary unit 3 placed on a line 8 of current line.
- the switch 2 is arranged to switch between a first state, where an electric current on the line 8 of electrical current conduit on which the switch 2 is placed, can pass through the switch 2, and a second state, where said current electrical switch can not cross the switch 2.
- the switch 2 is arranged to connect to its second state in case of finding a malfunction on this line 8 of electrical current conduit.
- the switch 2 comprises a lock (not shown in FIG. 1) housed inside a casing 19 which forms the shell of the switch 2. This lock makes it possible to lock and unlock a contact bench which is crossed by the line 8 of current line.
- the switch 2 can operate as a security in an electrical installation and cut off the power supply, for example in the event of an overvoltage or a short circuit.
- auxiliary unit 3 is understood to mean an element distinct from the switch 2, as can be seen in particular from FIG.
- the switch 2 and the auxiliary unit 3 are juxtaposed to one another.
- the switch 2 has a joystick 4 for manually controlling the lock.
- the auxiliary unit 3 comprises an actuator arranged to actuate the switch 2 to which this auxiliary unit 3 is associated.
- the term "actuator" in this invention is understood to mean an element of the auxiliary unit 3 capable of controlling the tripping of the switch 2 from the first state to the second state and optionally capable of rearming the switch 2 from the second state to the second state. first state.
- the actuator of the auxiliary unit 3 has the particularity of acting remotely on the switch 2, that is to say without mechanical contact with the switch 2.
- This auxiliary unit 3 is provided with another handle 5, which allows to manually control the actuator to arm or disarm the auxiliary unit 3. Since the switch 2 and the auxiliary unit 3 cooperate together, a movement of the handle 5 of the unit auxiliary 3 will cause a movement of the handle 4 and a change of state of the switch 1.
- FIG. 2 shows a graph showing the force F required to trigger a switch according to the state of the art and which has a mechanical connection with the auxiliary unit.
- This mechanical connection requires an opening of the housing in which the mechanism of the switch is housed. The presence of this opening will inevitably result in dust accumulating over time in the switch housing.
- the force F is resumed on the abscissa and the ordinate represents the unlocking stroke of the lock of the switch.
- the curves a, b and c each illustrate the force required to unlock the lock and thus move the switch between the first state and the second state.
- Curve a illustrates the force for a new switch
- curve b illustrates the force for a ground switch
- curve c illustrates the force for a switch that is already a few years old and in which dust has collected.
- the graph therefore shows that the dust, which has accumulated over time inside the switch, has formed a mechanical resistance for the switch. This mechanical resistance will oppose the movement of the switch from one state to another and will cause the switch to exert a force much higher than that exerted when the switch was ground. If the force to be exerted by the switch is higher than that which can produce the switch, for example that produced by a spring under tension, the switch will no longer be able to operate the lock properly, which can be dangerous, especially when the switch is used to secure an electrical network.
- the assembly 1 according to the invention has no mechanical connection between the switch 2 and the auxiliary unit 3.
- a generator-transmitter of the actuator of the auxiliary unit 3 acts remotely on a receiver of the switch 2.
- the term "generator-transmitter” means a source of magnetic field or electromagnetic radiation.
- the term "receptor” is intended to mean an element that is capable of detecting this magnetic field or electromagnetic radiation and of transforming this magnetic field or electromagnetic radiation into electrical and / or mechanical signals to trigger the switch 2.
- FIG. 3 illustrates a first way of producing an assembly 1 according to the invention.
- the switch 2 comprises a current measurement toroid 6 arranged to measure a differential current which following a malfunction could be present on the current line. This is for example the case when the switch is formed by a differential circuit breaker.
- the differential current measurement carried out by the torus 6 then makes it possible to check whether this measured current exceeds a predetermined threshold in order to trigger the switch 2, for example due to a malfunction, and, if this is the case, to trigger the switch 2 to bring it into its second state and thus cause a cut in the current flowing on the current line.
- the actuator which is part of the auxiliary unit 3, comprises a generator-transmitter 7, which in this embodiment is formed a first electromagnet 7.
- the generator-transmitter is arranged to produce an activation signal, which in the illustrated embodiment is formed by a magnetic field produced by the first electromagnet 7.
- This magnetic field is produced by injecting into the first electromagnet 7 an electric current, which can be taken from the line of conduct or a capacitor provided in the auxiliary unit 3.
- the production of the magnetic field can be carried out at the request of a user or in case of malfunction.
- the electromagnet 7 will be housed next to the torus 6 so as to transmit by radiation the magnetic field produced by the first electron.
- Toroid 6 thus functions as a receiver which receives the activation signal formed by the magnetic field produced by the first electromagnet.
- the power of the electric current injected into the first electromagnet 7 will be such that the intensity of the magnetic field thus produced and induced in the core 6 will be considered by the core 6 as a malfunction.
- the torus 6 will thus interpret the magnetic field and the current thus induced as a differential current similar to that of a malfunction, which will cause a trip, and therefore a change in the state of the switch 2.
- FIG. 4 illustrates a second embodiment of an assembly 1 according to the invention.
- the generator-transmitter of the auxiliary unit 3 comprises an excitation coil 1 1 connected to a first control circuit 10.
- This first control circuit 10 is for example formed by a relay, a thyristor or a processor and may include a capacitor for storing an electric charge.
- the first control circuit 1 0 is arranged to provide the coil 1 1 a power supply for a predetermined period of time. This period of time is for example determined by connecting the capacitor of the first control circuit in a circuit with an electrical resistance to form an RC circuit which determines this period.
- the supply of electrical energy to the coil 1 1 makes it possible to produce an excitation field.
- the first control circuit 10 can be activated at the request of a user or in case of malfunction.
- the receiver which is housed in the switch 2, which itself is juxtaposed with the auxiliary unit 3, comprises an auxiliary switch 13 connected to an input 16 of a second control circuit 12, which is also part of the switch 2.
- the coil 1 1 and the auxiliary switch 13 are mounted so as to be juxtaposed to one another.
- the auxiliary switch 13 connects an output 17 of the second control circuit 12 to its input 16.
- the excitation field produced by the coil 1 1 will be such that it will be able to actuate the auxiliary switch 13.
- the reception of the excitation field produced by the coil 1 1, will cause the closing of the auxiliary switch 13. This closure will in turn cause the output 17 of the second control circuit 12 is connected to its input 16 which will release a control signal from the second control circuit 12.
- the receiver also comprises a tripping member 14 connected to another output 18 of the second control circuit 12.
- the switch 2 comprises of course a branch member 15 to allow the passage between the first and the second state.
- the tripping member is preferably formed by a second electromagnet 14 arranged to activate, after receiving the control signal, the branching member 15.
- the magnetic field created by the second electromagnet after receiving the control signal goes cause a switch 2 to switch to the other state that it is.
- FIG. 5 and 6 illustrate a third embodiment of the assembly 1 according to the invention.
- the switch 2 and the auxiliary unit 3 each comprise a closing and opening mechanism for each to switch from one state to another.
- FIG. 5 illustrates the mechanism mounted in the switch 2
- FIG. 6 illustrates the mechanism mounted in the auxiliary unit 3.
- the closing and opening mechanism mounted in the switch comprises a trigger 20 and a first contact carrier 21.
- Figure 5 illustrates the switch 2 in its first state.
- the trigger 20 comprises a guide member 22 in which an arm 23 of the first contact carrier 21 comes to grip.
- the first contact carrier 21 also has a cavity 24 in which a rod 25 forming part of the lever 4 takes hold.
- the switch 2 passes from the first to the second state, that is to say during a trip, the trigger 20 will impose a pivoting of the first contact carrier 21 in a direction opposite to that of the needle 'a watch.
- the cavity 24 will follow this pivoting and release the link 25.
- the closing and opening mechanism mounted in the switch 2 also comprises a receiver 26, which in the illustrated example is formed by a steel piece placed on the first contact carrier 21.
- the closure and opening mechanism mounted in the auxiliary unit 3 ( Figure 6) comprises a second contact carrier 30 having a cavity 31 in which is housed a head 32 of a rod 33.
- the latter is stuck between the second contact carrier 26 and a trigger 34.
- the second contact carrier 26 and the trigger 34 are mounted on the same pivot 35 and thus rotate at the same time when the auxiliary unit 3 passes from one state to another.
- the connecting rod 33 undergoes a translation movement which makes it possible to guide the movement of the second contact carrier 30 and the trigger between its first and second state and to maintain them, thanks to its head which will be housed in the cavity 31 when the auxiliary unit 3 is connected to one of these states.
- the receiver 26 is placed on the closing and opening mechanism of the switch 2.
- the generator-transmitter 36 is formed by a magnet placed on the trigger 34 of the auxiliary unit 3. This magnet is arranged to produce the activation signal in the form of a magnetic field to be induced in the steel part 26.
- the magnet As the magnet is mounted on the trigger whose movement is guided by the connecting rod 33, its trajectory will be aligned with that followed by the closure and opening mechanism when closing and opening the switch 2. Thus the magnet will pass in front of the steel piece 26.
- the magnetic field will be felt by the steel piece 26 and this The last will be driven by the movement of the auxiliary unit 3.
- the steel piece 26 will impose a pivot in the opposite direction to that of the needles of the watch and trigger the switch 2.
- a fourth way of producing the transmitter-generator comprises a light source connected to a third control circuit arranged to supply the light source with a power supply. in electrical energy for a predetermined period of time and thereby produce a light beam.
- the receiver has an optocoupler connected to a control input of a fourth control circuit.
- the opto-coupler is arranged to release, after reception of the light beam, another control signal and to supply it to the input of the fourth control circuit.
- the receiver also comprises a tripping member connected to an output of the fourth control circuit, which fourth control is arranged to activate the triggering member after receiving the other control signal, which triggering member is arranged to trigger the switch.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Keying Circuit Devices (AREA)
- Selective Calling Equipment (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1662684A FR3060836B1 (fr) | 2016-12-16 | 2016-12-16 | Ensemble d'un interrupteur et d'une unite auxiliaire |
PCT/FR2017/053598 WO2018109414A1 (fr) | 2016-12-16 | 2017-12-15 | Ensemble d'un interrupteur et d'une unite auxiliaire |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3555901A1 true EP3555901A1 (fr) | 2019-10-23 |
EP3555901B1 EP3555901B1 (fr) | 2021-03-17 |
Family
ID=58401751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17825905.7A Active EP3555901B1 (fr) | 2016-12-16 | 2017-12-15 | Ensemble d'un interrupteur et d'une unite auxiliaire |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3555901B1 (fr) |
FR (1) | FR3060836B1 (fr) |
WO (1) | WO2018109414A1 (fr) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2756095B1 (fr) * | 1996-11-15 | 1998-12-24 | Schneider Electric Sa | Disjoncteur avec un bloc disjoncteur et des modules de traitement, de calibrage et de communication |
IT1304062B1 (it) * | 1998-12-29 | 2001-03-07 | Abb Ricerca Spa | Dispositivo accessorio di comando per interruttori di bassa tensione |
JP2002324477A (ja) * | 2001-04-27 | 2002-11-08 | Fuji Electric Co Ltd | 回路しゃ断器用の早入り補助スイッチ付き不足電圧引外し装置 |
US9658264B2 (en) * | 2014-12-30 | 2017-05-23 | Energybox Ltd. | Energy metering system with self-powered sensors |
-
2016
- 2016-12-16 FR FR1662684A patent/FR3060836B1/fr active Active
-
2017
- 2017-12-15 WO PCT/FR2017/053598 patent/WO2018109414A1/fr unknown
- 2017-12-15 EP EP17825905.7A patent/EP3555901B1/fr active Active
Also Published As
Publication number | Publication date |
---|---|
FR3060836A1 (fr) | 2018-06-22 |
FR3060836B1 (fr) | 2019-05-24 |
WO2018109414A1 (fr) | 2018-06-21 |
EP3555901B1 (fr) | 2021-03-17 |
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