WO2019077038A1 - Appareil de protection contre les surtensions - Google Patents

Appareil de protection contre les surtensions Download PDF

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Publication number
WO2019077038A1
WO2019077038A1 PCT/EP2018/078540 EP2018078540W WO2019077038A1 WO 2019077038 A1 WO2019077038 A1 WO 2019077038A1 EP 2018078540 W EP2018078540 W EP 2018078540W WO 2019077038 A1 WO2019077038 A1 WO 2019077038A1
Authority
WO
WIPO (PCT)
Prior art keywords
separating
connecting element
switch
overvoltage protection
protection device
Prior art date
Application number
PCT/EP2018/078540
Other languages
German (de)
English (en)
Inventor
Maik Dittert
Jan Hegerfeld
Christian RAMSEL
Original Assignee
Phoenix Contact Gmbh & Co. Kg
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 Phoenix Contact Gmbh & Co. Kg filed Critical Phoenix Contact Gmbh & Co. Kg
Priority to CN201890001307.5U priority Critical patent/CN212647980U/zh
Publication of WO2019077038A1 publication Critical patent/WO2019077038A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H01H2037/762—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit using a spring for opening the circuit when the fusible element melts
    • 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
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/167—Circuits for remote indication

Definitions

  • the invention relates to an overvoltage protection device having a housing, with at least two overvoltage limiting components, with at least two disconnecting devices, and with a switch as a remote signaling contact for the remote indication of the state of the overvoltage protection device.
  • the separation devices are arranged movably in the housing, wherein a separation device is assigned to a surge-limiting component and when the associated surge-limiting construction element is overloaded it electrically separates it by moving the separation device from a first position to a second position.
  • Overvoltage protection devices are widely used in various design variants for the protection of electrical circuits, systems, machines and devices. Depending on the application and protection level, the overvoltage protection devices have different overvoltage limiting components and different types. In particular, spark gaps, gas-filled surge arresters and varistors as well as combinations of these components are used as overvoltage limiting components. Due to aging and temporary overvoltages (TOV) in the range of seconds, there is an undesirable increase in the leakage current of the varistor at operating voltage, in particular in surge protective devices with a varistor as Abieiter. Overvoltage protection devices with a varistor as Abieiter therefore generally have a thermal separation device through which a no longer functioning varistor is separated from the current path to be monitored.
  • TOV temporary overvoltages
  • the monitoring of the state of the varistor is carried out according to the principle of a temperature switch, with overheating of the varistor - for example, due to leakage currents - a between the varistor and a conductive connection element provided solder joint is separated, resulting in electrical separation of the varistor leads.
  • DE 695 03 743 T discloses such an overvoltage protection device with two varistors connected in parallel, each individually at the end of their life can be separated.
  • two conductive connecting elements designed as resilient separating tongues are provided, the first end of which is fastened in the normal state of the varistor in each case via a soldering point to a connection tongue of the varistor, while the second end of each is fixedly connected to a connection contact. If there is an inadmissible heating of a varistor, this leads to a melting of the solder joint.
  • An overvoltage protection device with a thermal cut-off device is also known from DE 20 2004 006 227 U1, wherein a varistor is also used as a drain according to an exemplary embodiment (FIG. 5).
  • the overvoltage protection element known from DE 20 2004 006 227 U1 has, in addition to a conductive connecting element and a thermally disconnecting connection, an insulating separating element which is arranged displaceably in the housing and can be moved from a first position to a second position by the force of a spring element ,
  • the first connection contact is permanently electrically connected to the first terminal of the varistor.
  • the second connection contact is conductively connected to the first end of the conductive connection element.
  • the second end of the conductive connecting element is connected via the thermally disconnecting connection to the second terminal of the varistor.
  • the insulating separating element is held in its first position against the spring force of the spring element by the soldering connection realized between the second end of the conductive connecting element and the second terminal of the varistor.
  • the surge arrester has heated up so much due to a permanent overloading of the varistor that a predetermined limit temperature is exceeded, then the solder joint breaks down.
  • the insulating separating element is moved by the force of the spring element into its second position, in which a portion of the separating element between the second end of the conductive connecting element and the second is arranged conclusion of the varistor, so that the varistor is electrically separated. Due to the movement of the separating element into its second position, an arc which possibly arises when the separating point is opened is also extinguished by the insulating separating element entering the separating point.
  • the well-known surge protection device consists of a device provided with terminals bottom part and designed as a "plug part" over-voltage protection element that can be easily attached to the bottom of the device.
  • the connection contacts are designed as plug pins or plug-in blades, to which corresponding plug sockets are arranged in the device lower part, which are connected to terminals for electrical connection of the overvoltage protection device.
  • the known overvoltage protection device has a visual status indication and a changeover contact as a signal transmitter for remote signaling of the state of the overvoltage protection element, wherein both the changeover contact in the lower part of the device and the optical status indicator on the connector part via a common mechanical actuation system can be actuated.
  • DE 10 2009 036 125 A also discloses an overvoltage protection element with a varistor which is disconnected in the event of impermissible heating by a thermally disconnecting connection.
  • the conductive connecting element is connected to an insulating separating element in such a way that when the thermal connection is interrupted, the insulating separating element is moved between a terminal of the varistor and the associated connecting contact.
  • the connecting element is preferably formed as a metal piece and arranged in the separator formed by a rigid insulating plate.
  • a spring-loaded release carriage is arranged within the housing, through which the insulating separating element is moved to the second position when the thermal connection is interrupted.
  • a bore is also formed, in which a trigger pin for actuating a telecommunications contact is arranged.
  • the lower end of the release pin protrudes in the normal state of the overvoltage protection element from a arranged in the bottom of the housing opening tion out, so that by the release pin arranged in the bottom of the device switch a telecommunications contact can be operated.
  • the known overvoltage protection devices enable safe separation of a damaged overvoltage limiting component, in particular a varistor.
  • the overvoltage protection elements partially have a visual indication of the state and additionally also enable a remote indication of the state of the overvoltage protection device.
  • the disadvantage here that the surge protective devices to relatively many components require, whereby the assembly is complex and therefore expensive. This applies in particular when the overvoltage protection device has not just one overvoltage limiting component, but at least two overvoltage limiting components which are to be monitored independently of one another and disconnected in the event of damage. In order to keep the wiring effort of the user as low as possible, surge protective devices with two or more overvoltage limiting components only have a remote indication.
  • the switches associated with the individual components are connected in series, so that an error message about the remote message is output when at least one overvoltage-limiting component has been switched off.
  • the number of components increases further.
  • the present invention is based on the object to provide an overvoltage protection device described above with at least two arranged in the housing overvoltage limiting components available, which is as simple as possible and thus can be produced inexpensively.
  • remote signaling of the state of the overvoltage protection device should be simple and reliable, even if the overvoltage protection device has more than one overvoltage limiting component.
  • a connecting element is movably arranged in the housing, via which the switch of the telecommunication contact with the at least two separating devices is operatively connected such that the switch has a first switching position when the at least two separating devices are each in their first position, while the switch has a different switching position when at least one separating device is in its second position. If the at least two separating devices are each in their first position, this means that the overvoltage limiting components are not overloaded and therefore not electrically disconnected, so that a corresponding signal can then be output via the switch in the first switching position that the overvoltage protection device is functional.
  • the overvoltage protection device has at least two overvoltage limiting components and at least two disconnection devices. Even if it is fundamentally possible for the overvoltage protection device to have more than two overvoltage-limiting components, for example three or four overvoltage-limiting components, it is subsequently always assumed that the overvoltage protection device has two overvoltage-limiting components and two disconnection devices, one disconnecting device each being assigned to an overvoltage-limiting component is. However, it is also conceivable that the overvoltage protection device, with more than two overvoltage-limiting components, also has more than two disconnection devices. has, which then stand on the connecting element in operative connection with the switch of the telecommunications contact.
  • both separating devices are each in their first position, so that the switch assumes its first switching position via the connecting element.
  • the second possible state one of the two separating devices is in its first position, while the other separating device is in its second position.
  • the connecting element and this state is transmitted to the switch, so that the switch can take a different, second switching position.
  • both separating devices are in their second position, wherein this state is also transmitted via the connecting element to the switch, so that the latter can assume a third switching position deviating from the first switching position.
  • the switch has two or three switching positions.
  • the second switching position and the third switching position are identical, so that the switch can only distinguish between the first switching position and another, second switching position.
  • the second switching position and the third switching position are different, so that a distinction between the second and the third state is possible via the switch, so a distinction as to whether only one separating device or both separating devices are in their second position. Both possibilities can be realized in the overvoltage protection device according to the invention.
  • the connecting element acts as a kind of rocker, wherein it is arranged with its center on the switch, while the two separating devices are in their first position in each case with one of the two ends of the connecting element in contact.
  • the switch is held against a spring force by the connecting element in its first switching position. If at least one of the two separating devices is in its second position, then the switch can be moved by the spring force from the first position into another, second position.
  • both separation devices are in their first position, is also the connecting element and thus also its center in its first position, in which the switch is held against a spring force in its first switching position. If at least one separating device moves from its first position to its second position, this leads to the fact that the connecting element functioning as a kind of rocker is no longer fixed in its first position but can change its position. In this case, the center of the connecting element can then be moved by the spring force from its first position to a second position, so that the switch can also assume its second switching position.
  • the connecting element is connected at both ends to a disconnecting device.
  • the center of the connecting element contacts the switch, so that the switch is held counter to a spring force in its first switching position when the two separating devices are in their first position.
  • the contact of the switch through the center of the connecting element can be done directly or via an additional actuator, i. the center of the connector need not be in direct contact with the switch when the two separators are in their first position. All that is decisive is that the switch is held in its first switching position via the connecting element and possibly an actuating element arranged therebetween when the two separating devices are in their first position. If, on the other hand, at least one of the two separating devices is in its second position, then the switch is no longer held in its first switching position, so that it can be brought into a second switching position by a spring force.
  • the separating devices each have a conductive connecting element and an insulating separating element.
  • a connection of the overvoltage limiting component is electrically conductively connected via a thermally disconnecting connection to a first end of the associated conductive connecting element, wherein the associated insulating separating element is then held by the conductive connecting element against a force acting on it in a first position is.
  • the thermal connection is severed, so that the separating element is moved by the force acting on it into a second position, in which a separating section of the separating element between the first terminal of the overvoltage limiting component and the first End of the conductive connecting element is arranged, whereby the overvoltage limiting component is electrically separated.
  • the disconnecting device is thus a thermal separation device known from its basic structure and its mode of operation, in which the connection of the overvoltage limiting component normally takes place via the electrically conductive connecting element, while this connection is prevented by excessive heating of the overvoltage limiting component Separator is interrupted by the insulating separator moves between the corresponding terminal of the surge limiting component and the end of the conductive connecting element.
  • the switch is preferably in operative connection with the two separating elements of the two disconnecting devices via the connecting element, ie the two separating elements are connected to the connecting element.
  • the two separating elements thus not only ensure a safe separation of a damaged overvoltage limiting component by being spent in disconnected thermal connection between each of the associated overvoltage limiting component and the corresponding connecting element, but the connecting elements also provide for an active change in the position of the connecting element when at least one connecting element changes its position.
  • connection between the two separating elements and the connecting element is preferably realized in that in each of the two Trennelemen- an opening is formed, in each of which one end of the connecting element is arranged.
  • the connecting element thus extends with its two ends through the two openings in the two separating elements, so that one end of the connecting element is moved during a movement of a separating element from its first position to its second position.
  • the connecting element is integrally connected to the two separating elements, wherein the connecting element is at least partially flexible or flexibly connected to the two separating elements.
  • This variant of the invention also causes the connecting element to be moved during a movement of a separating element from its first position into its second position. Due to the flexible configuration or the flexible connection of the connecting element to the two separating elements, it is still possible that the two insulating separating elements can change their position independently of one another. As a result, the separation function of the two separating elements is not influenced, so that both overvoltage-limiting components can be separated independently of one another.
  • the connecting element can be designed to be flexible overall, or the connecting element can also have only flexible sections with which it is connected, for example, to the insulating separating elements.
  • the flexible sections may in particular be designed as film hinges, via which one or more rigid sections of the connecting element are connected to one another.
  • gas-filled surge arresters may be used as overvoltage-limiting components which are electrically cut off in the event of inadmissible heating by a thermally disconnecting connection.
  • the overvoltage protection device according to the invention has two varistors as overvoltage limiting components, so that subsequently mostly varistors are mentioned without the invention should be limited thereto.
  • the thermally disconnecting connections between the first end of a conductive connection element and the one connection of the associated varistor are preferably each designed as a solder connection, so that via a corresponding selection of the solder, the limit temperature can be set, from which the thermal connection separates.
  • the separating elements are each rotatably arranged in the housing, so that the separating elements are moved from their first position to their second position by a pivoting movement.
  • the axis of rotation of the separating elements is preferably formed by formed in the housing pivot, to which corresponding openings are formed in the separating elements.
  • corresponding pivot pins can be formed on the separating elements, which engage in corresponding openings in the housing.
  • the separating elements can also be arranged linearly displaceable in the housing, wherein the displacement direction can extend both parallel to the longitudinal axis and perpendicular to the longitudinal axis of the overvoltage protection device.
  • a force acts on the separating elements in each case.
  • this force is applied by at least one spring element which is arranged in the housing.
  • the spring elements is attached with its one end to a pin in the housing and with its other end to a corresponding pin as a point of attack on the separator.
  • the connecting elements are preferably each of a resilient design and are deflected out of their rest position in their first position.
  • the connecting elements When disconnected thermal connection, the connecting elements then spring due to their spring force from its first position to its second position. This movement is additionally assisted by the retraction of the separating section of a separating element into the separation point between the connection of the varistor and the first end of the connecting element.
  • the overvoltage protection device not only has a switch for remote indication of the state of the overvoltage protection device, but also an optical status indication.
  • the separating elements each have a marking section, so that the visual status indication is formed directly by the separating elements.
  • the viewing window formed in the housing is dimensioned such that, depending on the position of the separating elements, the marking section of a separating element is visible from the outside through the viewing window or not.
  • the optical indication of the state of the varistor is preferably carried out by a corresponding color display, to which the marking section or the entire separating element has a corresponding color, for example, a red color.
  • the marking sections are preferably offset from one another so that one marking section covers the other marking section when both separating elements are in their second position.
  • the dimensions of the marking sections could also be chosen such that both marking sections are arranged side by side both in the first position and in the second position of the separating elements. In this case it can even be visually distinguished whether only one varistor or both varistors have been cut off.
  • the overvoltage protection device advantageously consists of a plug part and a device lower part, wherein in the plug part the overvoltage limiting components and the separating device and in the lower part of the device switches and terminals are arranged.
  • an opening is formed in the device lower part facing the underside of the plug housing, through which the switch or an end of the actuating element protrudes into the plug housing, when the plug part is attached to the lower device part.
  • the connecting element which is preferably connected with its two ends, each with a separating element.
  • the arranged below the opening in the device base switch of the telecommunications contact can be kept so directly through the center of the connecting element or by the actuating element in its first switching position, when the two separating elements are both in their first position. Is at least one Separating element in its second position, this leads to a change in the position of the center of the connecting element, so that the switch changes its switching position due to a spring force, namely assumes its second switching position.
  • the switch in the lower part of the device also when a plug part is not attached to the lower part of the device. Also in this, the switch is not held or pressed by the connecting element in its first switching position, so that the switch assumes its second switching position and a corresponding error message is output.
  • FIG. 1 is a simplified representation of a preferred embodiment of an overvoltage protection device according to the invention, in the normal state and with electrically separated varistor,
  • FIG. 2 is a schematic diagram of a first variant of the actuating mechanism of the switch, in three different states,
  • FIG. 3 is a schematic diagram of a second variant of the actuating mechanism of the switch, in two different states
  • FIG. 4 is a schematic diagram of another variant of the actuating mechanism of the switch, in two different states
  • FIG. 5 is a schematic diagram of another variant of the actuating mechanism of the switch, in two different states
  • FIG. 6 is a simplified representation of another embodiment of a surge protective device in the normal state and with electrically separated varistor
  • 7 is a simplified representation of a variant of the embodiment of an overvoltage protection device according to FIG. 6, in the normal state and with an electrically separated varistor
  • FIG. 6 is a simplified representation of another embodiment of a surge protective device in the normal state and with electrically separated varistor
  • Fig. 8 is a simplified representation of a variant of the embodiment of the overvoltage protection device according to FIG. 1, in the normal state and with electrically separated varistor, and
  • FIG. 9 is an enlarged view of the plug part of the overvoltage protection device shown in FIG. 8, with two electrically separated varistors.
  • the overvoltage protection device 1 may be formed in two parts, namely consist of a plug part 2 and a lower device part 3, as shown in Fig. 1.
  • the plug part 2 can then be simply plugged onto the U-shaped device lower part 3 and, for example, for the replacement of a defective plug part 2 also be easily deducted from the lower device part 3, without the need to be solved on the device lower part 3 lines.
  • the plug part 2 has a plug housing 4 and the lower device part 3 a base housing 5, so that in the overvoltage protection device 1, the housing consists of the plug housing 4 and the base housing 5, which preferably lock together when the plug part 2 is attached to the lower device part 3.
  • the overvoltage protection device 1 in particular has two varistors 6a, 6b as overvoltage limiting components, which are arranged together in the plug housing 4 in the illustrated embodiment.
  • the overvoltage protection device 1 has two disconnecting devices and a switch 7 arranged in the base housing 5 as a telecommunications contact for remote signaling of the state of the overvoltage protection device 1.
  • the two separating devices each consist of a conductive connecting element 8 and an insulating separating element 9a, 9b, which are arranged in the plug part 2.
  • the overvoltage protection device 1 is shown in each case from one side, with both the plug housing 4 and the sunk ckelgephaseuse 5 are shown only very schematically and in particular the components arranged in the interior of the housing are shown visibly, even if they are hidden in a real overvoltage protection device 1 of respective side walls of the housing.
  • only one varistor 6a and, correspondingly, only one conductive connecting element 8 and an insulating separating element 9a are shown in these figures, even if two varistors 6a, 6b and, correspondingly, also two conductive connecting elements 8 and two insulating separating elements 9a, 9b are arranged.
  • the second varistor 6b and the second connecting element as well as the second separating element 9b are arranged in the drawing planes behind the first varistor 6a or the first connecting element 8 and the first separating element 9a in FIGS. 1 and 6 to 8 and are thereby concealed by them.
  • the following description therefore primarily relates to the one, first varistor 6a, but applies correspondingly also to the second varistor 6b.
  • the first terminal 10 of the varistor 6a is electrically conductively connected to the first end of the first conductive connecting element 8 via a solder connection as a thermally disconnecting connection.
  • a solder connection as a thermally disconnecting connection.
  • an opening 11 is formed in the first separating element 9a, through which the first end of the first conductive connecting element 8 is connected via the solder connection to the first terminal 10 of the varistor 6a.
  • the first partition member 9a is held in its first position by the solder connection between the first varistor 6a and the first connection member 8. This also applies correspondingly to the connection of the second varistor 6b to the second connecting element and the arrangement of the second separating element 9b.
  • the thermal connection ie a melting of the solder connection
  • the resilient connecting element 8 springs back from its deflected, first position into its relaxed, second position.
  • the partition member 9a is placed in its second position, in which a separation portion of the partition member 9a is disposed between the first terminal 10 of the varistor 6a and the first end of the connection member 8.
  • the opening 11 in the separating element 9a is no longer located above the first connection 10 of the varistor 6a. This state is shown in Fig. Lb.
  • the second connecting element and the second separating element behave quite correspondingly when the temperature of the second varistor 6b exceeds the limit temperature, so that the solder connection formed between the first terminal of the second varistor 6b and the first end of the second connecting element melts.
  • the second separating element 9b then pivots with its separating section between the first terminal of the second varistor 6b and the first end of the second conductive connecting element.
  • a connecting element 12 is provided, via which the switch 7 arranged in the base housing 5 is in operative connection with the two separating elements 9a, 9b.
  • the switch 7 has a first switching position (FIG. 1a) when the two separating elements 9a, 9b are each in their first position, while the switch 7 has a second switching position (FIG. 1b), if at least one separating element 9a 9b is in its second position.
  • the connecting element 12 Due to the arrangement of the connecting element 12 and its operative connection with the two separating elements 9a, 9b, the position of the two separating elements 9a, 9b can be detected with only one switch 7, so that for remote notification of the state of an overvoltage protection device 1 with two varistors 6a, 6b only one Switch 7 is required.
  • the connecting element acts as a kind of rocker, wherein the center of the connecting element 12 is arranged on the switch 7. If the two separating elements 9a, 9b according to FIG. 2a are in their first position, they are in each case in contact with one end 13a, 13b of the connecting element 12, so that the switch 7 counteracts a spring force F through the connecting element 12 in its first switching position is held. If there is a thermal overload of a varistor, so that the associated separating element 9a is brought into its second position, so this leads to a "tilting" of the connecting element 12 as shown in FIG. 2b.
  • the switch 7 takes on the basis of the spring force F its second Switching position, since it is no longer prevented by the connecting element 12 to a corresponding movement.
  • the center of the connecting element 12 is thereby displaced by the switch 7 in the direction of the spring force F, while the end 13b of the connecting element 12 is held by the second separating element 9b in its position. This then leads to the already mentioned “tilting" of the connecting element 12 with the first end 13a of the connecting element 12 moving upwards since the corresponding first separating element 9a has moved from its first position to its second, upper position.
  • both separating elements 9a, 9b according to FIG. 2c are in their second position, the two separating elements 9a, 9b are each spaced from the associated end 13a, 13b of the connecting element 12, the switch 7 also being in its second switching position. It is irrelevant for the switching position of the switch 7, whether the two separating elements 9a, 9b are moved in chronological succession or simultaneously from its first position to its second position. It is also conceivable that the two separating elements 9a, 9b each slightly contact one end 13a, 13b of the connecting element 12, as long as it is ensured by a sufficient movement of the separating elements 9a, 9b, that the switch 7 from its first switching position to its second switching position can move.
  • Fig. 3 shows a basically second embodiment variant of the actuating mechanism of the switch 7, wherein the connecting element 12 is connected at its two ends 13a, 13b each with a separating element 9a, 9b. If the two separating elements 9a, 9b according to FIG. 3a are both in their first position, then the center of the connecting element 12 contacts the switch 7. In the exemplary embodiment according to FIG. 3, an actuating element 14 is still present between the connecting element 12 and the switch 7 arranged so that the center of the connecting element 12, the switch 7 is not contacted directly, but via the actuating element 14.
  • connection between the two separating elements 9a, 9b and the connecting element 12 is realized in that in each of the two separating elements 9a, 9b an opening 15a, 15b is formed, in each of which an end 13a, 13b of the connecting element 12 is arranged.
  • the openings 15a, 15b are each dimensioned so that they on the one hand allow an entanglement of the connecting element 12, when only a separating element 9a, 9b is moved from its first position to its second position, on the other hand, however, ensure that during a movement of a separating element 9a , 9b the corresponding end 13 a, 13 b of the connecting element 12 is moved.
  • the connecting element 12 is thus actively pulled along during a movement of the separating elements 9a, 9b.
  • a separating element 9a or both separating elements 9a, 9b (FIG. 3b) is in its second position, then the switch 7 is no longer held counter to a spring force F in its first position, so that the switch 7 can assume its second switching position.
  • the center of the connecting element 12 is at a distance from the actuating element 14, which, however, is not absolutely necessary. Rather, it is sufficient if, in the second position, at least one of the two separating elements 9a, 9b, the center of the connecting element 12 is at least as far away from the switch 7, that the switch 7 can assume its second switching position. If the center of the connecting element 12 still slightly contacts the actuating element 14, this is irrelevant to the desired actuation of the switch 7.
  • the connecting element 12 is integrally connected to the two separating elements 9a, 9b, so that similar to the variant according to FIG. 3, the connecting element 12 during a movement of a separating element 9a, 9b from its first Position is actively taken to its second position. If both separating elements 9a, 9b according to FIGS. 4a and 5a are in their first position, the switch 7 is contacted by the center of the connecting element 12, so that the switch 7 is held against its spring force F in its first switching position.
  • the connecting element 12 is designed to be flexible overall, while in the variant according to FIG. 5, the connecting element 12 has rigid sections 16 which are connected to one another via flexible regions in the form of film hinges 17.
  • the connection between the separating elements 9 a, 9 b and the ends 13 a, 13 b of the connecting element 12 is realized via film hinges 17.
  • FIGS. 6 and 7 both show simplified representations of a further embodiment of an overvoltage protection device 1, in each case in the normal state and with an electrically separated varistor e
  • the separating elements 9a, 9b are each rotatably mounted in the connector housing 4 are at 6 and 7, the separating elements 9a, 9b arranged linearly displaceable in the connector housing 4 in the embodiments according to FIGS.
  • the displacement of the separating element 9a takes place perpendicular to the longitudinal axis of the overvoltage protection device 1, d. H. from the device base 3 away.
  • the displacement of the separating element 9a takes place parallel to the longitudinal axis of the overvoltage protection device 1 and thus also parallel to the device lower part 3.
  • a separation of the solder connection between the one terminal 10 of a varistor 6a and the free end of the associated connecting element 8 causes the separating element 9a to be moved to its second position by the spring force of at least one spring 18.
  • This results in an electrical separation of the varistor 6a in that the separating section of the separating element 9a slides between the terminal 10 of the varistor 6a and the end of the connecting element 8.
  • Fig. 8 shows a variant of the overvoltage protection device 1 according to FIG. 1, in which the overvoltage protection device 1 in addition to the switch 7 for the remote message additionally has an optical status indicator.
  • the two separating elements 9a, 9b each have a marking section 19a, 19b.
  • the marking sections 19a, 19b are only visible through a viewing window 20 in the top of the plug housing 4 when the corresponding separating element 9a, 9b is in its second position, as shown in Fig. 8b.
  • the visual indication of the state of a varistor 6a, 6b can be effected, for example, by a corresponding color selection of the marking section 19a, 19b or also of the entire separating element 9a, 9b.
  • FIG. 9 shows only the plug part 2 of the overvoltage protection device 1 shown in FIG. 8 in cross section.
  • both varistors 6a, 6b are disconnected, so that both separating elements 9a, 9b are also in their second position.
  • the marking sections 19a, 19b of both separating elements 9a, 9b are arranged below the viewing window 20 in the plug housing 4.
  • the two marking sections 19a, 19b are not arranged below the viewing window 20, so that through the viewing window 20, the upper side 21 of the two varistors 6a, 6b or one surrounding the two varistors 6a, 6b Envelope through the viewing window 20 is visible from the outside. If the upper side 21 now has a first color, for example green, while the marking sections 19a, 19b have a second color, for example red, then it is very quickly and easily recognizable to a user whether the overvoltage protection device 1 is still fully functional or whether at least one varistor 6a, 6b has been cut off.
  • a first color for example green
  • the marking sections 19a, 19b have a second color, for example red
  • the green upper side 21 of the varistors 6a, 6b and in the second case a red marking section 19a, 19b can be seen through the viewing window 20 from the outside.
  • the marking sections 19a, 19b are offset relative to one another so that the marking section 19a of the first separating element 9a covers the marking section 19b of the second separating element 9b, if both separating elements 9a, 9b are in their position second position.
  • the staggered arrangement of the two marking sections 19a, 19b is achieved in the exemplary embodiment illustrated in FIG. 9 in that the respective rotation axis 22a, 22b of the two separating elements 9a, 9b are also arranged offset correspondingly to one another.
  • the two marking portions 19a, 19b are also formed as film hinges, so that both separating elements 9a, 9b may be formed the same and only during assembly of the marking portion 19a of the first separating element 9a to the right and the marking portion 19b of the second separating element 9b after must be bent left.
  • the entire marking section 19a, 19b as a film hinge
  • only the connection between the respective separating element 9a, 9b and the marking section 19a, 19b may be formed as a film hinge.
  • the use of two identically formed separating elements 9a, 9b simplifies the production on the one hand, but also the assembly of the overvoltage protection plug 1, since there can not be any confusion between the separating elements 9a, 9b during assembly.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuses (AREA)

Abstract

La présente invention concerne un appareil de protection contre les surtensions (1) muni d'un boîtier (4, 5), d'au moins deux composants limiteurs de surtension (6a, 6b), d'au moins deux dispositifs de séparation et d'un contact de communication à distance, comprenant un interrupteur (7), pour communiquer à distance l'état de l'appareil de protection contre les surtensions (1). Les dispositifs de séparation sont disposés mobiles dans le boîtier (4) et chaque dispositif de séparation est associé à un composant limiteur de surtension (6a, 6b) et, en cas de surcharge du composant limiteur de surtension associé (6a, 6b), celui-ci est coupé électriquement par le fait que le dispositif de séparation est déplacé d'une première position vers une seconde position. Avec l'appareil de protection contre les surtensions (1) selon l'invention, une communication à distance de l'état de l'appareil de protection contre les surtensions (1) est simple et est possible avec peu de composants du fait qu'un élément de liaison (12) est disposé mobile dans le boîtier (4, 5) et du fait que l'interrupteur (7) est en liaison active avec les deux dispositifs de séparation ou plus par le biais de l'élément de liaison (12) de manière que l'interrupteur (7) comprend une première position de commutation lorsque les deux dispositifs de séparation ou plus se trouvent chacun à leur première position tandis que l'interrupteur (7) comprend une autre position de commutation lorsqu'au moins un dispositif de séparation se trouve dans sa seconde position.
PCT/EP2018/078540 2017-10-18 2018-10-18 Appareil de protection contre les surtensions WO2019077038A1 (fr)

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DE102017124219.8A DE102017124219A1 (de) 2017-10-18 2017-10-18 Überspannungsschutzgerät
DE102017124219.8 2017-10-18

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DE102020107318B4 (de) 2020-03-17 2023-06-22 Dehn Se Überspannungsschutzvorrichtung sowie modulares Überspannungsschutzsystem

Citations (6)

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Publication number Priority date Publication date Assignee Title
EP0716493A1 (fr) * 1994-12-05 1996-06-12 Soule Materiel Electrique Dispositif de protection à l'encontre de surtensions transitoires à base de varistances et déconnecteurs thermiques
DE202004006227U1 (de) 2004-04-16 2004-09-16 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzgerät
DE102008026555A1 (de) * 2008-06-03 2009-12-10 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzgerät mit thermischer Abtrennvorrichtung
DE102009036125A1 (de) 2009-08-05 2011-02-10 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzelement
US20120086540A1 (en) * 2010-04-09 2012-04-12 Abb France Device for protection from surges with improved thermal disconnector
WO2014027969A2 (fr) * 2012-08-11 2014-02-20 Iskra Zascite D.O.O. Mécanisme de signalisation de déconnexion dans un dispositif de protection contre les surtensions

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Publication number Priority date Publication date Assignee Title
DE3805889C2 (de) * 1987-10-24 1995-11-23 Bettermann Obo Ohg Vorrichtung zur Funktionsüberwachung von Überspannungsableitern
FR2783365B1 (fr) * 1998-09-15 2000-12-01 Soule Materiel Electr Dispositif de protection d'installations electriques contre les perturbations de l'alimentation
DE102015203184B4 (de) * 2015-02-23 2021-09-02 Phoenix Contact Gmbh & Co. Kg Platinen-bestückbares modulares Überspannungsschutzgerät

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0716493A1 (fr) * 1994-12-05 1996-06-12 Soule Materiel Electrique Dispositif de protection à l'encontre de surtensions transitoires à base de varistances et déconnecteurs thermiques
DE69503743T2 (de) 1994-12-05 1999-03-25 Soule Materiel Electrique, Bagneres-De-Bigorre Schutzvorrichtung gegen transiente Überspannungen mit Varistoren und thermischen Auslösern
DE202004006227U1 (de) 2004-04-16 2004-09-16 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzgerät
DE102008026555A1 (de) * 2008-06-03 2009-12-10 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzgerät mit thermischer Abtrennvorrichtung
DE102009036125A1 (de) 2009-08-05 2011-02-10 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzelement
US20120086540A1 (en) * 2010-04-09 2012-04-12 Abb France Device for protection from surges with improved thermal disconnector
WO2014027969A2 (fr) * 2012-08-11 2014-02-20 Iskra Zascite D.O.O. Mécanisme de signalisation de déconnexion dans un dispositif de protection contre les surtensions

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DE102017124219A1 (de) 2019-04-18

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