WO2022091146A1 - Electronic device for discharging overvoltages - Google Patents
Electronic device for discharging overvoltages Download PDFInfo
- Publication number
- WO2022091146A1 WO2022091146A1 PCT/IT2021/050066 IT2021050066W WO2022091146A1 WO 2022091146 A1 WO2022091146 A1 WO 2022091146A1 IT 2021050066 W IT2021050066 W IT 2021050066W WO 2022091146 A1 WO2022091146 A1 WO 2022091146A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electronic
- line
- electronic device
- overvoltage
- voltage
- Prior art date
Links
- 238000007599 discharging Methods 0.000 title description 4
- 238000012544 monitoring process Methods 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims abstract description 5
- 230000009103 reabsorption Effects 0.000 claims abstract description 3
- 230000007935 neutral effect Effects 0.000 claims description 13
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000009499 grossing Methods 0.000 claims description 3
- 230000010365 information processing Effects 0.000 claims description 2
- 238000007726 management method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000009102 absorption Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/025—Disconnection after limiting, e.g. when limiting is not sufficient or for facilitating disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
Definitions
- the present invention refers to an electronic device for discharging overvoltages.
- Surge arresters are devices that allow the equipment to be safeguarded from overvoltages and are characterized in that their use makes it possible to secure the electrical system from critical issues such as voltage surges and peaks that may come from the operator, or from atmospheric phenomena such as lightning, causing serious damage to the devices connected to the sockets, and can also be inserted into an existing system.
- Multiple devices for discharging overvoltages are known in the art, of the switching or trigger type, of the combined type, non-resettable, disposable, passive and without intelligence.
- document DE202018006385 describes a surge protection device having input terminals, output terminals and at least two surge protection elements to form multi-level protection levels
- document DE102017218582 which describes a device with at least two protection element s overvoltage protection in parallel current branches , in which a first force accumulator is associated with the first overvoltage protection element and a second force accumulator is associated with the second overvoltage protection element so that in case of heating of an element the electrical connection is interrupted beyond the overvoltage point
- document DE4124321 which describes a device inherent in an overload protection circuit with a pair of parallel varistors (VI , V2 ) connected between the active phase and ground in parallel , in which if the varistor coupled the fuse switch overheat s and the second varistor is switched to maintain the conductive path to earth, and an optical and/or acoustic indicator warns the operator that it is neces sary to replace the first varistor .
- the main disadvantage of existing approaches is the use of non-resettable devices following a non-reusable detachment intervention, in which it is not pos sible to have an indication of the system status on display or remotely, and in some cases provided only an optical and/or acoustic indicator for signaling an anomaly.
- the known art is focused on non-modular surge arresters models, ie without the possibility of being able to scale the varistors in order to adapt to the required smoothing voltage.
- Object of the present invention is solving the aforementioned prior art problems by means of an innovative and intelligent electronic device for the discharge of overvoltages, which can be modulated according to the needs of the line and can be reused, capable of providing an indication of the status by means of an integrated, resettable display.
- Another object of the present invention is the possibility of having a protection of electrical and electronic systems and equipment against continuous, transient and impulsive overvoltages, and also the management of statistical data relating to overvoltages with their geo- localization.
- FIG. 1 shows the overall diagram of the electronic device for overvoltage discharge (100) composed of functional blocks according to the present invention
- FIG. 2 shows the internal structure of the output stage (2) consisting of the parallel of some varistors with a predetermined voltage and of different types;
- FIG. 3 shows the internal structure of the input stage (1) consisting of a resistive divider
- FIG. 4 shows a view of a possible configuration that allows connection to a standard DIN rail and therefore easy to integrate into existing electrical panels.
- the electronic device for overvoltage discharge (100) is based on a suitably designed and sized electronic power board and includes an electronic input stage (1) designed to take the input voltage necessary for monitoring and generating the necessary voltage to the collection and monitoring circuit of line voltages and currents (3) , an electronic output stage (2) designed for the protection of the load from overvoltage and the reabsorption of its energy and for monitoring the output voltage, and a collection and monitoring circuit for line voltages and currents (3) designed to monitor the input and output voltages and the galvanic isolation with respect to the input/output voltages .
- the electronic input stage (1) connected to the line (L) , neutral (N) and earth (PE) terminal, has the phase (L) and neutral (N) lines connected to a protection with fuses (4) with the function of protecting the equipment connected therein from any continuous, transient and impulsive overvoltages.
- the impulse overvoltage between the line terminal (L) and neutral (N) if of short duration, passing along the connections established by the double-sided printed circuit and the protection elements in series, is applied both on the output circuit (Out) and on users.
- the current flowing through the protection elements with fuses (4) is sized according to the rated capacity of the device.
- the electronic device for overvoltage discharge (100) is equipped with a circuit for collecting and monitoring the line voltages and currents (3) which sends the signals of the line voltages and currents for information processing and device management to the microcontroller / microprocessor (5) to which it is connected.
- the microcontroller / microprocessor (5) is equipped with a remote connection system (6) using Wi-Fi technology, connected to a server (7) to ensure data management from the remote terminal (8) in order to view the quantities measured in real time, and said microcontroller/microprocessor (5) is provided with a display (9) to ensure an immediate display of the parameters by the end user.
- the microcontroller / microprocessor (5) is designed to monitor the line voltage, the line current and the system status, i.e. operational, fault, fault Fuse 1, fault Fuse 2.
- the electronic output stage (2) consists of the parallel of a set of varistors of different types, connected to the output between the line (L) and the neutral (N) of said varistors (10) , between the line (L) and the earth
- figure 2 which houses the various varistors allows effective reclosing of the discharge currents, as well as adequate galvanic isolation between the input and output section, which is essential for breaking the arc in the event of overvoltage and tripping of the device electronic for overvoltage discharge .
- the high overvoltage per peak and/or duration not dissipated by the varistors (10, 11 and 12) of the electronic output stage (2) is dispersed by opening a pair of switches (14) connected between the input (1) and output (2) and in parallel with the protection elements with fuses (4) , thus preventing the overvoltage from spreading to the users.
- the switches can be switched on remotely (14) . This operation is intended as temporary, since the device requires the replacement of the fuses.
- the electronic input stage (1) is designed by means of a resistive divider consisting of high voltage resistors ( 13 ) through which the voltage to be sent to the collection and monitoring circuit of the voltages and current s is attenuated , line ( 3 ) and also the one needed to power the microcontroller / microproces sor ( 5 ) .
- the operation of the invention is optimized by the presence of the printed circuit which provides both the channeling of the current s and the galvanic isolation of the load, thanks to it s geometry developed on a double side .
- the electronic device for overvoltage discharge ( 100 ) can be installed inside a DIN rail container and therefore can be fully integrated with any electrical panel , reusable and able to manage, through the microcontroller / microprocessor, the data both functionally (electronic by-pass, remote connection, data monitoring) , and statistically (energy consumption in the various time bands, instant, daily, average consumption, etc. ) .
- the processing of the voltage and current allows the calculation of the active and reactive power that passes through the system, with the possibility for the user to check the energy absorption and any overloads of the network; any shortages of electricity by the supplier are also monitored.
- the user is promptly notified by means of his own application and can provide for the temporary remote hooking up of the electronic device for the overvoltage discharge, enabling the switches (14) in order to supply power supply to the loads.
- This restoration is to be considered temporary, since by keeping the system in this condition, the protection object of the invention is not enabled. Thanks to the presence of a buffer battery, the system can operate for several hours even in the absence of power from the mains, ensuring communication with the remote user.
- Another possible configuration of the electronic device for overvoltage discharge (100) is of the portable type by placing it outside the electrical panel, inside a container with IP65 protection for quick installation even in environments with environmental conditions. unfavorable .
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
Abstract
An electronic device for overvoltage discharge (100) is described, based on the concept that an overvoltage, depending on entity and type, can be grounded or reabsorbed by one or more electronic elements, comprising an electronic input stage (1) to take the input voltage necessary for monitoring and generating the voltage necessary for the collection and monitoring circuit of line voltages and currents (3), an electronic output stage (2) for protection against overvoltage and energy reabsorption of the same and a collection and monitoring circuit of the line voltages and currents (3) to monitor the input and output voltages and the galvanic isolation with respect to input/output voltages. A device is also described, which uses a microcontroller -microprocessor connected to the network and remotely controllable for the remote restoration of the power supply to the loads if the system had intervened with a load disconnection.
Description
ELECTRONIC DEVICE FOR DISCHARGING OVERVOLTAGES The present invention refers to an electronic device for discharging overvoltages. Surge arresters are devices that allow the equipment to be safeguarded from overvoltages and are characterized in that their use makes it possible to secure the electrical system from critical issues such as voltage surges and peaks that may come from the operator, or from atmospheric phenomena such as lightning, causing serious damage to the devices connected to the sockets, and can also be inserted into an existing system. Multiple devices for discharging overvoltages are known in the art, of the switching or trigger type, of the combined type, non-resettable, disposable, passive and without intelligence. For example, document DE202018006385 describes a surge protection device having input terminals, output terminals and at least two surge protection elements to form multi-level protection levels, or
the document DE102017218582 which describes a device with at least two protection element s overvoltage protection in parallel current branches , in which a first force accumulator is associated with the first overvoltage protection element and a second force accumulator is associated with the second overvoltage protection element so that in case of heating of an element the electrical connection is interrupted beyond the overvoltage point , and also the document DE4124321 which describes a device inherent in an overload protection circuit with a pair of parallel varistors (VI , V2 ) connected between the active phase and ground in parallel , in which if the varistor coupled the fuse switch overheat s and the second varistor is switched to maintain the conductive path to earth, and an optical and/or acoustic indicator warns the operator that it is neces sary to replace the first varistor .
The main disadvantage of existing approaches is the use of non-resettable devices following a non-reusable detachment intervention, in which it is not pos sible to have an indication of the system status on display or remotely, and in some cases provided only an optical and/or acoustic indicator
for signaling an anomaly. Furthermore, the known art is focused on non-modular surge arresters models, ie without the possibility of being able to scale the varistors in order to adapt to the required smoothing voltage. Object of the present invention is solving the aforementioned prior art problems by means of an innovative and intelligent electronic device for the discharge of overvoltages, which can be modulated according to the needs of the line and can be reused, capable of providing an indication of the status by means of an integrated, resettable display. following a disconnection intervention, it is able to monitor the status of the main electrical quantities with the possibility of remote viewing and management using Wi-Fi technology. Another object of the present invention is the possibility of having a protection of electrical and electronic systems and equipment against continuous, transient and impulsive overvoltages, and also the management of statistical data relating to overvoltages with their geo- localization. The aforesaid and other objects and advantages
of the invention, as will emerge from the following description, are achieved with an electronic device for the overvoltage discharge such as that described in claim 1. Preferred embodiments and non-trivial variations of the present invention form the subject of dependent claims.
It is understood that all attached claims form an integral part of the present description.
It will be immediately obvious that innumerable variations and modifications (for example relating to shape, dimensions, arrangements and parts with equivalent functionality) can be made to what is described without departing from the scope of the invention as appears from the attached claims.
The present invention will be better described by some preferred embodiments, provided by way of non-limiting example, with reference to the attached drawings, in which:
- FIG. 1 shows the overall diagram of the electronic device for overvoltage discharge (100) composed of functional blocks according to the present invention;
- FIG. 2 shows the internal structure of the output stage (2) consisting of the parallel of
some varistors with a predetermined voltage and of different types;
- FIG. 3 shows the internal structure of the input stage (1) consisting of a resistive divider;
- FIG. 4 shows a view of a possible configuration that allows connection to a standard DIN rail and therefore easy to integrate into existing electrical panels.
The electronic device for overvoltage discharge (100) is based on a suitably designed and sized electronic power board and includes an electronic input stage (1) designed to take the input voltage necessary for monitoring and generating the necessary voltage to the collection and monitoring circuit of line voltages and currents (3) , an electronic output stage (2) designed for the protection of the load from overvoltage and the reabsorption of its energy and for monitoring the output voltage, and a collection and monitoring circuit for line voltages and currents (3) designed to monitor the input and output voltages and the galvanic isolation with respect to the input/output voltages .
Advantageously, the electronic input stage
(1) , connected to the line (L) , neutral (N) and earth (PE) terminal, has the phase (L) and neutral (N) lines connected to a protection with fuses (4) with the function of protecting the equipment connected therein from any continuous, transient and impulsive overvoltages. The impulse overvoltage between the line terminal (L) and neutral (N) , if of short duration, passing along the connections established by the double-sided printed circuit and the protection elements in series, is applied both on the output circuit (Out) and on users.
Furthermore, the current flowing through the protection elements with fuses (4) is sized according to the rated capacity of the device.
The electronic device for overvoltage discharge (100) is equipped with a circuit for collecting and monitoring the line voltages and currents (3) which sends the signals of the line voltages and currents for information processing and device management to the microcontroller / microprocessor (5) to which it is connected.
Furthermore, the microcontroller / microprocessor (5) is equipped with a remote connection system (6) using Wi-Fi technology, connected to a server (7) to ensure data management
from the remote terminal (8) in order to view the quantities measured in real time, and said microcontroller/microprocessor (5) is provided with a display (9) to ensure an immediate display of the parameters by the end user.
In particular, the microcontroller / microprocessor (5) is designed to monitor the line voltage, the line current and the system status, i.e. operational, fault, fault Fuse 1, fault Fuse 2.
Advantageously, the electronic output stage (2) consists of the parallel of a set of varistors of different types, connected to the output between the line (L) and the neutral (N) of said varistors (10) , between the line (L) and the earth
(PE) of said varistors (11) and between the neutral (N) and earth (PE) of said varistors (12) , numerically sized according to the capacity of the protection elements with fuses (4) . Furthermore, if the voltage across the line (L) and neutral (N) ) or between the line (L) and earth (PE) or between neutral (N) and earth (PE) of the output electronic stage (2) exceeds the smoothing voltage imposed by the varistors in parallel, the excess voltage is dissipated in the protection elements
and depends on the number of varistors and their type .
In particular, the layout of figure 2 which houses the various varistors allows effective reclosing of the discharge currents, as well as adequate galvanic isolation between the input and output section, which is essential for breaking the arc in the event of overvoltage and tripping of the device electronic for overvoltage discharge .
Advantageously, the high overvoltage per peak and/or duration not dissipated by the varistors (10, 11 and 12) of the electronic output stage (2) is dispersed by opening a pair of switches (14) connected between the input (1) and output (2) and in parallel with the protection elements with fuses (4) , thus preventing the overvoltage from spreading to the users. After the intervention with disconnection, to restore the power supply to the users, the switches can be switched on remotely (14) . This operation is intended as temporary, since the device requires the replacement of the fuses.
In particular, moreover, the electronic input stage (1) is designed by means of a resistive
divider consisting of high voltage resistors ( 13 ) through which the voltage to be sent to the collection and monitoring circuit of the voltages and current s is attenuated , line ( 3 ) and also the one needed to power the microcontroller / microproces sor ( 5 ) .
The operation of the invention is optimized by the presence of the printed circuit which provides both the channeling of the current s and the galvanic isolation of the load, thanks to it s geometry developed on a double side .
The electronic device for overvoltage discharge ( 100 ) can be installed inside a DIN rail container and therefore can be fully integrated with any electrical panel , reusable and able to
manage, through the microcontroller / microprocessor, the data both functionally (electronic by-pass, remote connection, data monitoring) , and statistically (energy consumption in the various time bands, instant, daily, average consumption, etc. ) .
The processing of the voltage and current allows the calculation of the active and reactive power that passes through the system, with the possibility for the user to check the energy absorption and any overloads of the network; any shortages of electricity by the supplier are also monitored. In the event of intervention of the protection elements with fuses (4) , the user is promptly notified by means of his own application and can provide for the temporary remote hooking up of the electronic device for the overvoltage discharge, enabling the switches (14) in order to supply power supply to the loads. This restoration is to be considered temporary, since by keeping the system in this condition, the protection object of the invention is not enabled. Thanks to the presence of a buffer battery, the system can operate for several hours even in the absence of power from the mains, ensuring communication with
the remote user.
Another possible configuration of the electronic device for overvoltage discharge (100) is of the portable type by placing it outside the electrical panel, inside a container with IP65 protection for quick installation even in environments with environmental conditions. unfavorable .
Claims
1. Electronic surge discharge device (100) comprising :
- an electronic input stage (1) designed to take the input voltage necessary for monitoring and generating the voltage necessary for the collection and monitoring circuit of line voltages and currents (3) ;
- an electronic output stage (2) designed for overvoltage load protection and energy reabsorption and for monitoring the output voltage;
- a collecting and monitoring circuit of line voltages and currents (3) designed to monitor the input and output voltages and the galvanic isolation with respect to the input/output voltages .
2. Electronic device for overvoltage discharge (100) according to claim 1, characterized in that the electronic input stage (1) , connected to the line terminal (L) , neutral (N) and earth (PE) , has phase (L) and neutral (N) lines connected to protection elements with fuses (4) with the function of protecting the equipment connected therein from any overvoltages of variable duration.
3. Electronic device for overvoltage discharge
(100) according to claim 1, characterized in that the current flowing through the protection elements with fuses (4) is sized according to the rated capacity of the device.
4. Electronic device for overvoltage discharge (100) according to claim 1, characterized in that the circuit for collecting and monitoring the line voltages and currents (3) sends the signals of the line voltages and currents for information processing and device management to the microcontroller/microprocessor (5) to which it is connected .
5. Electronic device for overvoltage discharge (100) according to claim 1, characterized in that the microcontroller/microprocessor (5) has a remote connection system (6) using Wi-Fi technology, connected to a server (7) to ensure the management of data from the remote terminal (8) in order to display the measured quantities in real time, and said microcontroller/microprocessor (5) is equipped with a display (9) to ensure an immediate display of the parameters by the final user.
6. Electronic device for overvoltage discharge (100) according to claim 1, characterized in that the microcontroller/microprocessor (5) is designed
to monitor the line voltage, the line current and the state of the system, i.e. operational, fault, fault Fl, fault F2.
7. Electronic device for overvoltage discharge (100) according to claim 1, characterized in that the electronic output stage (2) is composed of the parallel of a set of varistors of different types, connected to the output between the line (L) and the neutral (N) of said varistors (10) , between the line (L) and earth (PE) of said varistors (11) and between the neutral (N) and earth (PE) of said varistors (12) , numerically sized according to the capacity of the protection elements with fuses (4) .
8. Electronic device for overvoltage discharge (100) according to claim 1, characterized in that if the voltage across the line (L) and neutral (N) ) or between the line (L) and earth (PE) or between the neutral (N) and the earth (PE) of the output electronic stage (2) exceeds the smoothing voltage imposed by the varistors in parallel, the excess voltage is dissipated in the protection elements and depends on the number of varistors and by the type of the same.
9. Electronic device for overvoltage discharge (100) according to claim 1, characterized in that
the high overvoltage per peak and/or duration not dissipated by the varistors (10, 11 and 12) of the electronic output stage (2) is dispersed by opening a pair of switches (14) connected between the input (1) and output (2) states and in parallel to the protection elements with fuses (4) .
10. Electronic device for overvoltage discharge (100) according to claim 1, characterized in that the electronic input stage (1) is designed by means of a resistive divider consisting of high voltage resistors (13) by means of which the voltage to be sent to the collection and monitoring circuit of the line voltages and currents (3) and also that necessary to power the microcontroller / microprocessor (5) .
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102020000025432A IT202000025432A1 (en) | 2020-10-27 | 2020-10-27 | Electronic device for overvoltage discharge |
IT102020000025432 | 2020-10-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022091146A1 true WO2022091146A1 (en) | 2022-05-05 |
Family
ID=74347498
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/IT2021/050066 WO2022091146A1 (en) | 2020-10-27 | 2021-03-12 | Electronic device for discharging overvoltages |
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IT (1) | IT202000025432A1 (en) |
WO (1) | WO2022091146A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4124321A1 (en) | 1991-07-23 | 1993-01-28 | Dehn & Soehne | Over-load voltage protection circuit - has thermal fuse switch that responds if first varistor fails to establish second varistor path to ground |
DE102008063816A1 (en) * | 2008-12-19 | 2010-06-24 | Wago Verwaltungsgesellschaft Mbh | Protection device for protecting automation device e.g. field bus coupler, against overvoltage in e.g. vehicle engineering, has limiting units limiting voltage at input of supply unit during exceeding limit value of supply voltage |
EP2510598A1 (en) * | 2009-12-09 | 2012-10-17 | Mueerelektronik Power Oy | Electronic protection circuit and protection device |
CN108233352A (en) * | 2018-01-25 | 2018-06-29 | 深圳市崧盛电子股份有限公司 | A kind of lightning protection device |
DE102017218582A1 (en) | 2017-10-18 | 2019-04-18 | Phoenix Contact Gmbh & Co. Kg | Space-limited protection module with at least two overvoltage protection elements in parallel current branches |
WO2019086249A1 (en) * | 2017-11-06 | 2019-05-09 | Dehn + Söhne Gmbh + Co. Kg | Circuit arrangement for combined protection of a load from temporary and transient overvoltages |
DE202018006385U1 (en) | 2018-11-26 | 2020-03-19 | Phoenix Contact Gmbh & Co. Kg | Surge protection device with thermal overload protection device |
-
2020
- 2020-10-27 IT IT102020000025432A patent/IT202000025432A1/en unknown
-
2021
- 2021-03-12 WO PCT/IT2021/050066 patent/WO2022091146A1/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4124321A1 (en) | 1991-07-23 | 1993-01-28 | Dehn & Soehne | Over-load voltage protection circuit - has thermal fuse switch that responds if first varistor fails to establish second varistor path to ground |
DE102008063816A1 (en) * | 2008-12-19 | 2010-06-24 | Wago Verwaltungsgesellschaft Mbh | Protection device for protecting automation device e.g. field bus coupler, against overvoltage in e.g. vehicle engineering, has limiting units limiting voltage at input of supply unit during exceeding limit value of supply voltage |
EP2510598A1 (en) * | 2009-12-09 | 2012-10-17 | Mueerelektronik Power Oy | Electronic protection circuit and protection device |
DE102017218582A1 (en) | 2017-10-18 | 2019-04-18 | Phoenix Contact Gmbh & Co. Kg | Space-limited protection module with at least two overvoltage protection elements in parallel current branches |
WO2019086249A1 (en) * | 2017-11-06 | 2019-05-09 | Dehn + Söhne Gmbh + Co. Kg | Circuit arrangement for combined protection of a load from temporary and transient overvoltages |
CN108233352A (en) * | 2018-01-25 | 2018-06-29 | 深圳市崧盛电子股份有限公司 | A kind of lightning protection device |
DE202018006385U1 (en) | 2018-11-26 | 2020-03-19 | Phoenix Contact Gmbh & Co. Kg | Surge protection device with thermal overload protection device |
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IT202000025432A1 (en) | 2021-01-27 |
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