EP3422370A1 - Dispositif de protection contre les surtensions et mécanisme de libération et leur base - Google Patents

Dispositif de protection contre les surtensions et mécanisme de libération et leur base Download PDF

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Publication number
EP3422370A1
EP3422370A1 EP17177926.7A EP17177926A EP3422370A1 EP 3422370 A1 EP3422370 A1 EP 3422370A1 EP 17177926 A EP17177926 A EP 17177926A EP 3422370 A1 EP3422370 A1 EP 3422370A1
Authority
EP
European Patent Office
Prior art keywords
rotating member
varistor
function rotating
linkage rod
slider
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
EP17177926.7A
Other languages
German (de)
English (en)
Other versions
EP3422370B1 (fr
EP3422370B8 (fr
Inventor
Chunpo Zhai
Keqi Chen
Shang-Tsai Wu
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.)
Shanghai Hanghai Chenzhu Instrument Co Ltd
Shanghai Hanghai Chenzhu Instr Co Ltd
Dinkle Electric Machinery China Co Ltd
Dinkle Enterprise Co Ltd
Original Assignee
Shanghai Hanghai Chenzhu Instrument Co Ltd
Shanghai Hanghai Chenzhu Instr Co Ltd
Dinkle Electric Machinery China Co Ltd
Dinkle Enterprise Co Ltd
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 Shanghai Hanghai Chenzhu Instrument Co Ltd, Shanghai Hanghai Chenzhu Instr Co Ltd, Dinkle Electric Machinery China Co Ltd, Dinkle Enterprise Co Ltd filed Critical Shanghai Hanghai Chenzhu Instrument Co Ltd
Priority to EP17177926.7A priority Critical patent/EP3422370B8/fr
Publication of EP3422370A1 publication Critical patent/EP3422370A1/fr
Publication of EP3422370B1 publication Critical patent/EP3422370B1/fr
Application granted granted Critical
Publication of EP3422370B8 publication Critical patent/EP3422370B8/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • H01H71/14—Electrothermal mechanisms
    • H01H71/20—Electrothermal mechanisms with fusible mass

Definitions

  • This disclosure relates to a surge protector, and more particularly to a release mechanism and a base of the surge protector.
  • a surge protector is generally applied in an electric circuit and used at home, office, or factory to prevent electric equipment from being damaged by transient overvoltage.
  • the surge protector is capable of conducting shunts in a very short time to avoid damaging other equipments in the circuit due to an electric surge.
  • a surge protector in general, includes a metal oxide varistor (which is one of the varistors), and the varistor may be aged after a long time of use and generates heat easily. To prevent accidents such as a fire caused by the rise of temperature, the surge protector usually comes with a release mechanism connected in series with the varistor, so that when the temperature rises, the varistor is released and disconnected from the circuit. As disclosed in R.O.C. Pat. Application No.
  • a conventional release mechanism comprises a box body, a semiconductor ceramic chip, a ceramic shielding body, and a release electrode plate, wherein a plane of the release electrode plate is attached to a side of the semiconductor ceramic chip, and the other side of the semiconductor ceramic chip is attached to the left electrode pin, and a convex side of the release electrode plate is installed into a positioning hole of the box body, and the rotating hole of the ceramic shielding body is sheathed on a shaft of the box body, and an edge of a soldering hole of the ceramic shielding body, a solderable metal layer covered onto the periphery of the soldering hole, and the solderable metal layer is soldered with a convex side of the release electrode plate, and the right electrode pin of the box body is passed through the conductive wire and soldered with the solderable metal layer, and a pushrod of the spring device is installed into a slide slot, and the ceramic shielding body is pushed or pulled under the effect of the elasticity of the spring, the ceramic shield
  • the conventional release mechanism has the following problems: (1) The convex side of the release electrode plate is installed into the positioning hole of the box body, so that after the soldering point is disconnected, the ceramic shielding body and the release electrode plate are moved together. If the moving distance is too short, the wiring cannot be cut off completely. (2) The right electrode pin and the release electrode plate are coupled with each other by the conductive wire and the solderable metal layer, so that the connecting structure is very complicated, and occupies a large space, and increases the failure rate.
  • this disclosure provides a base applicable for a single-stage surge protector and a multi-stage surge protector, and the base adopts a mechanical connecting structure with different independent linkages, and just one micro switch and one slider are used, and each level has the linkage of the remote linkage rod and the slider.
  • the remote device After the release mechanism of a surge protector of any level is released, the remote device will issue a signal to assure an effective feedback to a control system for each time of release, so as to achieve the effects of improving the safety and reliability of the surge protector, providing a simple mechanism with a small quantity of components, a stable connection, a convenient production, and lowering the cost.
  • This disclosure further provides a release mechanism of a surge protector, and the release mechanism comprises an internal box body, a function rotating member, an elastic driving device, a first electrical connection pin, a second electrical connection pin and a bridge bracket accommodated in the a varistor, and the first electrical connection pin and the second electrical connection pin being plugged into the internal box body, and the varistor's second electrode and the first electrical connection pin being soldered, and the internal box body having a fixed column, and the function rotating member having an arc shield plate and a soldering window, and the function rotating member being sheathed on the fixed column and disposed between the varistor and the bridge bracket, and the elastic driving device having an end coupled to the function rotating member and the other end fixed to the internal box body, wherein an end of the bridge bracket directly fixed and coupled to the second electrical connection pin, such that when the varistor is situated at a normal status, the function rotating member is situated at a first position, and the other end of the bridge bracket is passed through the soldering window and soldered with a varistor's first
  • an end of the bridge bracket is fixed and coupled to the second electrical connection pin directly, and when the varistor is situated at a normal status, the function rotating member is situated at the first position, and the other end of the bridge bracket is passed through the soldering window and soldered with the varistor's first electrode at low temperature, and when the varistor is situated at a release status, the elastic driving device drives the function rotating member to rotate around the fixed column, so that when the function rotating member is rotated to the second position, the arc shield plate provides a shielding effect between the bridge bracket and the varistor's first electrode to break open the wiring and the electric arc.
  • the bridge bracket Since the bridge bracket is fixed and coupled to the second electrical connection pin directly, the bridge bracket is fixed with the internal box body to skip the conductive wire coupled between the bridge bracket and the electrical connection pin.
  • the bridge bracket When the function rotating member is rotated, the bridge bracket will not be rotated with the function rotating member, so that the wiring is cut off completely to prevent the ceramic shielding body and the release electrode plate of the conventional surge protector to move together. If the distance between them is too short, the wiring cannot be cut off completely.
  • the soldering window has a shear slope disposed on a side of the soldering window
  • the internal box body has a panel
  • the panel has a varistor's first electrode passing hole (2K) aligned precisely with the soldering window
  • the varistor's first electrode passing hole has a shear plane, so that when the function rotating member is rotated, the shear slope and the shear plane of the soldering window are moved with respect to each other, so as to cut off the wiring more quickly and completely.
  • an inner wall and the shear plane of the varistor's first electrode passing hole, the arc shield plate of the function rotating member, and a surface of the varistor's first electrode form a closed area which eliminates the electric arc more completely.
  • the release mechanism has an external box body, and the external box body has a monitoring hole, and the internal box body has a failure status indicating area, and the function rotating member has a normal status indicating area, and the color of the normal status indicating area and the color of the failure status indicating area are different, and the function rotating member is situated at a first position, and the normal status indicating area is exposed from the monitoring hole, and the function rotating member is rotated to a second position, so that the failure status indicating area is disposed at and exposed from the monitoring hole, so as to achieve the release indicating function.
  • the elastic driving device is a spring
  • the function rotating member when the varistor is situated at a normal status, the function rotating member is situated at a first position, and the spring is situated at an stretched status, and when the varistor is situated at a release status, the spring is contracted, and the function rotating member is rotated from the first position to the second position around the fixed column under the effect of the spring.
  • both of the function rotating member and the internal box body are made of a temperature resisting, insulating, and flame retardant material, so that the surge protector has the temperature resisting, insulating, and flame retardant properties.
  • This disclosure further provides a surge protector comprising at least one varistor, a base, and at least one of the aforementioned release mechanisms.
  • the base comprises a remote device
  • the remote device has at least one remote linkage rod
  • the function rotating member has a remote linkage rod contact wall and a remote linkage notching, and when the function rotating member is situated at a first position, the remote linkage rod is pressed down by the remote linkage rod contact wall, and when the function rotating member is rotated from the first position to a second position, the function rotating member is rotated from the remote linkage rod contact wall to the remote linkage notching with respect to the point of action of the remote linkage rod to release the remote linkage rod, so as to achieve the remote function.
  • the remote device has a seat, at least one remote linkage rod spring and a micro switch
  • the seat has a slide slot, a slider, at least one slider spring, and at least one spring placement hole
  • the micro switch is installed in the seat and disposed under the slider
  • the remote linkage rod spring is sheathed on the remote linkage rod and installed together with the remote linkage rod into the spring placement hole
  • the slider is installed onto the slide slot
  • at least one slider spring has an end coupled to the slider and the other end abutting against the seat sidewall
  • the function rotating member is situated at the first position
  • the remote linkage rod spring is situated at a maximum compression status
  • the slider is stopped at an end of the slide slot by the remote linkage rod, and the slider has no action to the micro switch
  • the function rotating member is situated at a second position, at least one of the remote linkage rods pushes the slider to move along the slide slot under the pushing effect of the remote linkage rod spring, so that the slider presses the micro switch to indicate
  • the remote linkage rod has a driving slope
  • the slider has a driven slope
  • the driven slope of the slider is stopped by the driving slope of the remote linkage rod, and when the function rotating member is rotated to the second position, the driving slope pushes the driven slope, and the slider moves along the slide slot to press down the micro switch, wherein the driven slope and the driving slope are provided for the remote linkage rod to drive the slider to slide more stably.
  • the resultant force of all slider springs is smaller than the elasticity of the single remote linkage rod spring to guarantee that after a surge protector of any level is released, the remote device issues a signal to achieve the effects of providing a feedback to a control end effectively for each time of release, improving the safety and reliability of the surge protector, and reducing the quantity of components.
  • the base is a pluggable base
  • the base has a cover
  • the cover has an U-shaped plug slot
  • an inner sidewall of the U-shaped plug slot has a latch slot
  • the external box body of the release mechanism has a lock
  • the lock is latched to the latch slot formed on an inner sidewall of the U-shaped plug slot, so that the base can be connected to the release mechanism more conveniently and quickly to prevent the release mechanism from being loosened or falling off and improve the product safety.
  • the base has an electrical connection member
  • the electrical connection member has a metal claw and a conductive strip
  • the metal claw and the conductive strip are soldered and coupled to each other, and the metal claw and the first electrical connection pin and the second electrical connection pin of the release mechanism are clamped and coupled to form a conducting channel.
  • the seat has a limit point
  • the remote linkage rod has a bump, such that when the remote linkage rod is set into the seat, the bump and the limit point are latched with each other, so as to assure that the remote linkage rod will not be popped out by the spring after installation.
  • This disclosure further provides a base.
  • the release mechanism comprises an external box body 1, an internal box body 2, a function rotating member 3, an elastic driving device 4, a first electrical connection pin 6, a second electrical connection pin 7, and a bridge bracket 8.
  • the internal box body 2 comprises: a panel, a function rotating member placement slot 2A, a fixed column 2B, a second electrical connection pin fixing slot 2C, a remote linkage rod passing hole 2D, a first electrical connection pin fixing slot 2E, a spring fixing column 2F, a varistor placement slot 2G, a varistor's second electrode slot 2H, a varistor's first electrode passing hole 2K, a shear plane 2M and a failure status indicating area 2N, and the shear plane 2M has a slope 2M-2 formed with a smaller acute angle and a plane 2M-1; the varistor's first electrode passing hole 2K and the fixed column 2B are disposed on the panel 2A.
  • the function rotating member 3 has a function rotating member fixing hole 3A, a spring connecting ring 3B, a soldering window 3C, a remote linkage rod contact wall 3D, a shear slope 3E, an arc shield plate 3F, a normal status indicating area 3G and a remote linkage notching 3H, and the color of the normal status indicating area 3G is different from the color of the failure status indicating area 2N of the internal box body 2, and the shear slope 3E has a slope 3E-1 formed with a smaller acute angle and a plane 3E-2, and the shear slope 3E is disposed on a side of the soldering window 3C.
  • the external box body 1 has a monitoring hole 1A and a lock 1B.
  • the internal box body 2 is made of an insulating, temperature resisting and flame retardant material.
  • the first electrical connection pin 6 is disposed in a first pin fixing slot 2E electrically coupled to the internal box body 2 and has two positioning recesses 6A latched with a protruded member in the first pin fixing slot 2E.
  • the second electrical connection pin 7 is fixed and installed in the fixing slot 2C of the second electrical connection pin 7, and the varistor 5 is installed into the varistor placement slot 2G of the internal box body 2, and the varistor's second electrode 5B is installed in the varistor's second electrode slot 2H and soldered with the first electrical connection pin 6 in the soldering area 6B, and the soldering area 6B is processed with a special surface treatment.
  • the function rotating member 3 is made of an insulating, temperature resisting, and flame retardant material, installed in the function rotating member placement slot 2A, and sheathed on the fixed column 2B, and the function rotating member 3 is installed between the varistor 5 and the bridge bracket 8 and coupled to the elastic driving device 4, wherein the elastic driving device 4 is preferably a spring 4, and the spring of the elastic driving device 4 has an end coupled to the spring connecting ring 3B and the other end coupled to the spring fixing column 2F of the internal box body; and a fixing end 8B of the bridge bracket 8 is fixed and coupled to the second electrical connection pin 7 directly.
  • the bridge bracket 8 is preferably pivotally coupled to the second electrical connection pin 7 in order to save the conductive wire coupled between them, so as to simplify the structure and reduce the quantity of components.
  • the elastic driving device 4 drives the function rotating member 3 to rotate around the fixed column 2B.
  • the spring is contracted to its original status, and the function rotating member is rotated counterclockwise around the fixed column 2B under the effect of the spring of the elastic driving device 4, and the function rotating member 3 is rotated to the second position, so that the failure status indicating area 2N of the internal box body 2 is situated at the monitoring hole 1A and exposed from the monitoring hole 1A to indicate that the varistor 5 is situated at the release status, and the function rotating member 3 is rotated from the remote linkage rod contact wall 3D to the remote linkage notching 3H with respect to the point of action of the remote linkage rod 9, so as to release the remote linkage rod 9; and the bridge bracket 8 will not rotate with the function rotating member 3, and the arc shield plate 3F provides a shielding effect between the bridge bracket 8 and the varistor's first electrode 5A, so that the wiring can be cut off more completely to prevent the conventional ceramic shielding body and release electrode plate from moving
  • the shear plane 2M is disposed on the varistor's first electrode passing hole 2K, and the shear slope 3E of the function rotating member 3 is matched with the shear plane 2M of the varistor's first electrode passing hole 2K and rotated with the rotation of the function rotating member 3 to produce a shear movement, so as to cut off the soldering wiring more completely and quickly.
  • the function rotating member 3 is rotated to the second position, the inner wall and the shear plane 2M of the varistor's first electrode passing hole 2K, the arc shield plate 3F of the function rotating member 3, and a surface of the varistor's first electrode 5A form a closed area, so that the electric arc can be eliminated more completely and quickly.
  • the base is a pluggable structure having a cover 10, an electrical connection member and a remote device, and a latch slot 10A is formed on an inner sidewall of the U-shaped plug slot of the cover 10.
  • the release mechanism When the release mechanism is plugged, the latch slot 10A and the lock 1B of the external box body 1 are latched with each other, and the release mechanism and the base can be coupled conveniently and quickly, and such arrangement prevents the release mechanism from being loosened or falling out, so as to improve the product safety.
  • the electrical connection member has a metal claw 11 and a conductive strip 12, and the metal claw 11 and the conductive strip 12 are soldered by point soldering, and the metal claw 11 is clamped and coupled to the first electrical connection pin 6 and the second electrical connection pin 7 of the release mechanism to form a conducting channel.
  • the remote device has a seat 13, a remote linkage rod 9, a remote linkage rod spring 17 and a remote connection terminal 20, and the remote connection terminal 20 may be coupled to a control system.
  • the multi-stage surge protector is a two-stage surge protector, and the base of the surge protector of each stage is an independent linkage mechanical connection structure, and the remote device has as seat 13 with an end surface 13C, a sidewall 13E, a slider 14, a group of slide slots 13A, and the surge protector of each stage has a limit point 13B, a slider spring 16, a spring placement hole 13D, a bump 9B and a remote linkage rod internal hole 9C.
  • the resultant force of two slider springs 16 is smaller than the elasticity of the single remote linkage rod spring 17.
  • the slider 14 has a driven slope 14A, a micro switch driven block 14B, two spring fixing columns 14C and two positioning claws 14D, and the slider 14 is installed onto the slide slot 13A, and the positioning claw 14 blocks the end surface 13C, and the two spring fixing columns 14C have a slider spring 16 each, and an end of the slider spring 16 abuts a sidewall 13E, so that the sidewall 13E provides a continuous pushing force to the slider 14.
  • Both of the remote linkage rod 9 and the remote linkage rod spring 17 are installed into the spring placement holes 13D of the surge protector of each stage respectively, and the remote linkage rod spring 17 is installed into the remote linkage rod internal hole 9C.
  • the installed remote linkage rod 9 will not be popped out by the link rod spring 17.
  • the micro switch 15 and the terminal block 19 are soldered onto the circuit board 18, and the circuit board 18 with the micro switch 15 and the terminal block 16 are installed into the seat 13.
  • the remote linkage rod 9 is pressed down by the remote linkage rod contact wall 3D of the function rotating member 3, and the remote linkage rod spring 17 is situated at a maximum compression status.
  • the driven slope 14A of the slider 14 is stopped at the right end of the slide slot 13A by the driving slope 9A of the remote linkage rod 9.
  • the micro switch driven block 14B on the slider has no action on the micro switch button 15A, and the micro switch button 15A is situated at a naturally pop-up status which indicates that the varistor is situated at a normal operation status.
  • the function rotating member 3 is rotated counterclockwise to the second position, and the function rotating member 3 is rotated from the remote linkage rod contact wall 3D to the remote linkage notching 3H with respect to the point of action of the remote linkage rod 9.
  • the remote linkage rod 9 has an upward movement space and pops upward under the pushing effect of the remote linkage rod spring 17 to indicate that the varistor 5 is situated at the release status (which is the failure status).
  • the driven slope 14A drives the slider 14 to move leftward along the slide slot 13A.
  • the slider 14 is situated at a maximum displacement of the stroke, and the slider spring 16 is compressed, and the micro switch driven block 14B presses down the micro switch button 15A. Since the resultant force of two slider springs 16 is smaller than the elasticity of a single remote linkage rod spring 17, just a micro switch and a slider can release the surge protector of any level, and then the remote device will issue a failure warning signal to the control system to assure an effective feedback to the control end for each time of release and remind maintenance people to replace the surge protector timely, so as to achieve the effects of improving the safety and reliability of the surge protector, reducing the quantity of components, facilitating the manufacturing process, and lowering the cost.
  • the release mechanism of this disclosure is capable of cutting off the electric arc and the soldering wiring between the varistor pin and the bridge bracket completely and quickly, while providing a status indication and a remote function.
  • the base of this disclosure simply adopts a micro switch and a slider component, such that when a surge protector of any level is released, the remote device will issue a signal to improve the safety and reliability of the surge protector.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Fuses (AREA)
EP17177926.7A 2017-06-26 2017-06-26 Dispositif de protection contre les surtensions et mécanisme de libération et leur base Active EP3422370B8 (fr)

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Application Number Priority Date Filing Date Title
EP17177926.7A EP3422370B8 (fr) 2017-06-26 2017-06-26 Dispositif de protection contre les surtensions et mécanisme de libération et leur base

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17177926.7A EP3422370B8 (fr) 2017-06-26 2017-06-26 Dispositif de protection contre les surtensions et mécanisme de libération et leur base

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EP3422370A1 true EP3422370A1 (fr) 2019-01-02
EP3422370B1 EP3422370B1 (fr) 2019-12-18
EP3422370B8 EP3422370B8 (fr) 2020-12-23

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112309772A (zh) * 2020-10-26 2021-02-02 国网山东省电力公司昌邑市供电公司 一种便携式继电保护器
CN113311200A (zh) * 2021-06-09 2021-08-27 湖北金顿电气有限公司 一种供电设备保护触发条件灵敏度检测装置
EP3889975A1 (fr) * 2020-03-30 2021-10-06 Longke Electronics (Huiyang) Co., Ltd. Module enfichable spd, base spd et spd enfichable
CN115513920A (zh) * 2022-10-24 2022-12-23 国网江苏省电力有限公司连云港供电分公司 一种变电站二次设备防雷保护装置
CN118040627A (zh) * 2024-04-12 2024-05-14 浙江大展电器有限公司 一种专用保护一体式电涌保护器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112543930A (zh) * 2020-11-17 2021-03-23 杭州昼锦科技有限公司 一种带有数据保护作用的高安全性计算机加密辅助装置
WO2024072672A2 (fr) * 2022-09-30 2024-04-04 Mersen Usa Ep Corp. Dispositif de protection contre les surtensions, varistance à oxyde métallique (mov) avec protection contre les courts-circuits intégrée, système d'insertion et séparation d'arc

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1077452A2 (fr) * 1999-08-17 2001-02-21 FERRAZ Société Anonyme Dispositif de protection de circuits
WO2011102811A2 (fr) * 2010-02-19 2011-08-25 ISKRA ZAŠČITE d.o.o. Coupe-circuit pour surtension comprenant un disque de rotation et ensemble électronique pour améliorer la fiabilité du fonctionnement
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
CN203933002U (zh) * 2014-07-04 2014-11-05 隆科电子(惠阳)有限公司 一种具有位移遮断式热脱离结构的浪涌吸收保护器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1077452A2 (fr) * 1999-08-17 2001-02-21 FERRAZ Société Anonyme Dispositif de protection de circuits
WO2011102811A2 (fr) * 2010-02-19 2011-08-25 ISKRA ZAŠČITE d.o.o. Coupe-circuit pour surtension comprenant un disque de rotation et ensemble électronique pour améliorer la fiabilité du fonctionnement
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
CN203933002U (zh) * 2014-07-04 2014-11-05 隆科电子(惠阳)有限公司 一种具有位移遮断式热脱离结构的浪涌吸收保护器

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3889975A1 (fr) * 2020-03-30 2021-10-06 Longke Electronics (Huiyang) Co., Ltd. Module enfichable spd, base spd et spd enfichable
CN112309772A (zh) * 2020-10-26 2021-02-02 国网山东省电力公司昌邑市供电公司 一种便携式继电保护器
CN112309772B (zh) * 2020-10-26 2024-02-13 国网山东省电力公司昌邑市供电公司 一种便携式继电保护器
CN113311200A (zh) * 2021-06-09 2021-08-27 湖北金顿电气有限公司 一种供电设备保护触发条件灵敏度检测装置
CN115513920A (zh) * 2022-10-24 2022-12-23 国网江苏省电力有限公司连云港供电分公司 一种变电站二次设备防雷保护装置
CN115513920B (zh) * 2022-10-24 2024-04-05 国网江苏省电力有限公司连云港供电分公司 一种变电站二次设备防雷保护装置
CN118040627A (zh) * 2024-04-12 2024-05-14 浙江大展电器有限公司 一种专用保护一体式电涌保护器

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Publication number Publication date
EP3422370B1 (fr) 2019-12-18
EP3422370B8 (fr) 2020-12-23

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