CN112146773A - Temperature measuring system of high-voltage switch equipment loop connecting structure - Google Patents
Temperature measuring system of high-voltage switch equipment loop connecting structure Download PDFInfo
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- CN112146773A CN112146773A CN202011014670.0A CN202011014670A CN112146773A CN 112146773 A CN112146773 A CN 112146773A CN 202011014670 A CN202011014670 A CN 202011014670A CN 112146773 A CN112146773 A CN 112146773A
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 37
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- 238000012544 monitoring process Methods 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000012212 insulator Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
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- 238000006243 chemical reaction Methods 0.000 abstract description 2
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- 230000015556 catabolic process Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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- 238000005259 measurement Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a temperature measuring system of a loop connecting structure of high-voltage switch equipment, which comprises a conductive metal element, an insulating heat-conducting element, a temperature measuring guide wire and a temperature display and acquisition device, wherein the conductive metal element is arranged on the insulating heat-conducting element; the conductive metal element is used for transmitting the temperature of the connecting structure to the insulating heat conducting element, one end of the insulating heat conducting element is connected to the conductive metal element, and the other end of the insulating heat conducting element is connected to the temperature display and acquisition device through a temperature measuring guide line. In the temperature measurement system, connection structure's temperature can be passed to the temperature measurement guide wire through electrically conductive metal component, insulating heat conduction component, and the temperature measurement guide wire is the signal of telecommunication with temperature signal conversion and is passed to temperature display collection system and show the temperature in real time for the staff can supervise the temperature in real time, thereby can in time carry out corresponding processing when taking place the unusual condition of generating heat, improve the security of equipment operation. In addition, the insulating heat conducting element does not need to be additionally connected with a power supply, so that the passive transmission of temperature can be realized.
Description
Technical Field
The invention relates to the technical field of high-voltage equipment, in particular to a temperature measuring system of a loop connecting structure of high-voltage switch equipment.
Background
In order to safely operate the power system, attention is generally paid to the diagnosis of thermal failure of the high voltage device. For a high-voltage equipment loop connection structure, such as a high-voltage switch, the contact resistance of a contact of the high-voltage equipment loop becomes large, overload and the like cause overhigh temperature of a joint, so that a heating phenomenon is generated, the heating phenomenon can cause continuous aging and even breakdown, short circuit is caused, a major accident is formed, and greater economic loss is caused. However, in the prior art, in the operating condition, the abnormal heating condition of the high-voltage equipment loop connecting structure cannot be detected in time, and the safety and reliability of the operation of the power system are affected.
Therefore, how to find the abnormal heating condition in time is a technical problem that needs to be solved by the technicians in the field at present.
Disclosure of Invention
In view of this, the present invention provides a temperature measuring system for a loop connection structure of a high voltage switch device, which is convenient for a worker to find an abnormal heating condition of the connection structure in time.
In order to achieve the purpose, the invention provides the following technical scheme:
a temperature measuring system of a loop connecting structure of high-voltage switch equipment comprises a conductive metal element, an insulating heat-conducting element, a temperature measuring guide line and a temperature display and acquisition device; the conductive metal element is used for transmitting the temperature of the connecting structure to the insulating heat conducting element, one end of the insulating heat conducting element is connected to the conductive metal element, and the other end of the insulating heat conducting element is connected to the temperature display and acquisition device through the temperature measuring guide line.
Preferably, the electrically conductive metal element is connected between the contact box and the insulating and heat conducting element.
Preferably, one end of the conductive metal element is connected to an insulator to which a bus bar conductor is connected, and the other end of the conductive metal element is connected to the insulating and heat-conducting element.
Preferably, the temperature monitoring system further comprises a data monitoring main unit electrically connected to the output end of the temperature display and acquisition device, and a remote equipment interface is arranged on the data monitoring main unit.
Preferably, the conductive metal element is a copper-based metal strip.
Preferably, the insulating heat conducting element is any one of a Sic ceramic heat conducting element, an AlN ceramic heat conducting element and a BeO ceramic heat conducting element.
Preferably, the temperature measurement guide line is a thermocouple transmission line.
Preferably, the temperature display and acquisition device comprises a linear temperature sensor and an alarm electrically connected to the output end of the linear temperature sensor, wherein the alarm is used for giving an alarm when the temperature detected by the linear temperature sensor is higher than a set temperature.
Preferably, the electrically conductive metal element and the insulating heat conducting element are fastened by using an insulating bolt and an insulating adhesive.
Preferably, the insulating heat conducting element is connected to the connecting structure through a mounting hole, and a gap existing between the insulating heat conducting element and the mounting hole is filled with an insulating material.
The invention provides a temperature measuring system of a loop connecting structure of high-voltage switch equipment, which comprises a conductive metal element, an insulating heat-conducting element, a temperature measuring guide wire and a temperature display and acquisition device, wherein the insulating heat-conducting element is arranged on the conductive metal element; the conductive metal element is used for transmitting the temperature of the connecting structure to the insulating heat conducting element, one end of the insulating heat conducting element is connected to the conductive metal element, and the other end of the insulating heat conducting element is connected to the temperature display and acquisition device through a temperature measuring guide line.
In this high tension switchgear return circuit connection structure temperature measurement system, connection structure's temperature can be passed to the temperature measurement guide wire through conductive metal component, insulating heat conduction component, and the temperature measurement guide wire is the signal of telecommunication with temperature signal conversion and is passed to temperature display collection system and show the temperature in real time for the staff can supervise the temperature in real time, thereby can in time carry out corresponding processing when taking place the unusual condition of generating heat, improve the security of equipment operation. In addition, the insulating heat conducting element does not need to be additionally connected with a power supply, so that the passive transmission of temperature can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a structural diagram of a temperature measuring system of a loop connection structure of a high-voltage switchgear provided by the present invention;
fig. 2 is a partial structural view of fig. 1.
Reference numerals:
the temperature measurement device comprises an insulating heat conduction element 1, a connecting structure 2, a conductive metal element 21, a temperature measurement guide wire 3, a temperature display acquisition device 4, a temperature data monitoring main unit 5, an RS485 bus 6 and an insulating material 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a temperature measuring system of a loop connecting structure of high-voltage switch equipment, which is convenient for workers to find abnormal heating conditions of the connecting structure in time.
It will be understood that when an element is referred to as being "secured" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In an embodiment of the temperature measuring system of the loop connection structure of the high-voltage switch equipment, please refer to fig. 1, which includes a conductive metal element 21, an insulating heat-conducting element 1, a temperature measuring guide wire 3 and a temperature display and collection device 4.
The connecting structure 2 to be tested is a contact box, more specifically a high-voltage switch contact box, optionally a switch moving contact box and a switch static contact box with the voltage class of 10kV to 35 kV. The electrically conductive metal element 21 is connected to the contact box to transfer the temperature of the contact box structure to the insulating, heat-conducting element 1. One end of the insulated heat conducting element 1 is connected with the electric conduction metal element 21, and the other end is connected with the temperature display and acquisition device 4 through the temperature measurement guide wire 3. The insulating and heat conducting element 1 is specifically a high-voltage-resistant insulating and heat conducting element. The conductive metal elements 21 may be provided in the form of columns, wires, strips, or other shapes, specifically copper-based metal strips, as desired.
The high tension switchgear return circuit connection structure temperature measurement system that this embodiment provided, connection structure 2's temperature can be through conductive metal component 21, insulating heat conduction component 1 reaches temperature measurement guide line 3, and temperature measurement guide line 3 converts temperature signal to the signal of telecommunication to the temperature display collection system 4 real-time display temperature for the staff can supervise the temperature in real time, thereby can in time carry out corresponding processing when taking place the unusual condition of generating heat, improve the security of equipment operation. In addition, since the insulating heat-conducting element 1 does not need to be additionally connected with a power supply, the passive transmission of the temperature can be realized.
Further, the temperature measuring system also comprises a data monitoring main unit 5 electrically connected with the output end of the temperature display and acquisition device 4, and the data monitoring main unit 5 and the temperature display and acquisition device are specifically connected through an RS232 bus or an RS485 bus 6. The data monitoring main unit 5 is provided with a remote device interface, and the remote device interface can be specifically connected with terminal devices such as a mobile phone, a tablet personal computer and the like, or a comprehensive automation system of a network and a substation, so as to further facilitate the monitoring work of workers.
Further, the insulating heat-conducting element 1 is any one of a Sic ceramic heat-conducting element, an AlN ceramic heat-conducting element, and a BeO ceramic heat-conducting element. The main performance indexes of the insulating and heat-conducting element 1 are as follows: the breakdown strength of the voltage resistance is more than or equal to 17 kV/m; the bending strength is more than or equal to 330 Mpa; the thermal conductivity (coefficient) is more than or equal to 170 Wmk; the material has the advantages of excellent thermal conductivity, lower dielectric constant and dielectric loss, reliable insulating property, excellent mechanical property, no toxicity, high temperature resistance and chemical corrosion resistance.
In addition, the length of the insulating heat-conducting element 1 is determined according to different voltage grades, specifically, the value of the 10kV voltage grade is 5-15 mm, the value of the 35kV voltage grade is 15-35 mm, the value of the 110kV voltage grade is 20-40 mm, and the value of the 220kV voltage grade is 35-55 mm.
Furthermore, the temperature measurement guide wire 3 is a thermocouple transmission line, has high measurement precision and stable performance, and is a thermocouple wire transmission line with a model pt-100.
Further, the temperature display and acquisition device 4 comprises a linear temperature sensor and an alarm electrically connected to the output end of the linear temperature sensor, wherein the alarm is used for giving an alarm when the temperature detected by the linear temperature sensor is higher than a set temperature, so that field workers can find abnormal heating conditions in time. Optionally, the working temperature of the linear temperature sensor is suitable for-50 ℃ to 200 ℃, and the preset temperature for alarming by the alarm is 95 ℃. More specifically, the temperature display and acquisition device 4 is a multi-channel temperature display automatic acquisition detector and is arranged in an instrument box inside the high-voltage switch cabinet.
Further, the conductive metal element 21 and the insulating heat conducting element 1 are fastened by an insulating bolt and an insulating adhesive, the insulating heat conducting element 1 is connected to the connecting structure 2 through a mounting hole, and a gap existing between the insulating heat conducting element 1 and the mounting hole is filled with an insulating material 7, such as a material with high insulating performance, e.g., epoxy resin, quartz powder, and the like. Referring to fig. 2, a mounting hole is directly formed in the connecting structure 2, one end of the insulating and heat-conducting element 1 extends into the mounting hole to connect the conductive metal element 21, and after connection, an insulating material 7 is filled in a gap between the mounting hole and the connecting structure 2 to ensure the insulating property of the connection. Of course, in other embodiments, the mounting hole may be disposed on other structures connected to the connecting structure 2, for example, when the connecting structure is a bus bar conductor, the mounting hole may be disposed on an insulator supporting the bus bar conductor.
In the embodiment, the high-voltage equipment is specifically a high-voltage switch cabinet in a power distribution network system, the high-voltage switch contact box is arranged in the high-voltage switch cabinet, and the working principle is that heat on the high-voltage switch contact box is transferred to the insulating heat-conducting element 1 through the copper-based metal strip, then is transmitted to the temperature display and acquisition device 4 installed nearby the base of the contact box through the thermocouple transmission line, and is transmitted to the data monitoring main unit 5 through the RS232 bus. The remote receiving and control center can compare historical data of the temperatures of the contact boxes, find accident potential in time and give an alarm in time.
In the embodiment, a method of taking a sample of heat of a target temperature measuring point by high-voltage-resistance insulation lap joint is adopted, heat is transmitted backwards through the insulation heat-conducting element 1, and then the temperature display and acquisition device 4 is used on the non-electricity side of the insulation heat-conducting element 1 to realize accurate monitoring of the temperature of the high-voltage side, and the insulation heat-conducting element 1 does not need power supply, so that the reliability is greatly improved, the method for monitoring the temperature in the high-voltage field is simplified, the practicability is improved, real-time temperature monitoring can be effectively carried out on electric equipment for a long time, frequent replacement is not needed, the manufacturing cost is low, and the popularization is.
Of course, in other embodiments, the connecting structure 2 may also be a bus bar conductor, i.e. a bus bar in a high voltage device, to monitor abnormal heating generated at the bus bar, specifically, one end of the conductive metal element 21 is connected to an insulator to which the bus bar conductor is connected, and the other end is connected to the insulating and heat conducting element 1.
Of course, in other embodiments, the temperature measurement guide line 3 may also be an optical fiber, and the temperature measurement is implemented by using the fiber grating temperature measurement principle, and accordingly, the temperature display and collection device 4 is provided with an optical demodulator.
Additionally, in other embodiments, the high voltage device may also be a circuit breaker.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The temperature measuring system of the high-voltage switch equipment loop connecting structure provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A temperature measurement system of a high-voltage switch equipment loop connection structure is characterized by comprising a conductive metal element (21), an insulating heat-conducting element (1), a temperature measurement guide line (3) and a temperature display acquisition device (4); the conductive metal element (21) is used for transmitting the temperature of the connecting structure to the insulating heat conducting element (1), one end of the insulating heat conducting element (1) is connected to the conductive metal element (21), and the other end of the insulating heat conducting element is connected to the temperature display and acquisition device (4) through the temperature measurement guide wire (3).
2. The high-voltage switchgear circuit connection configuration temperature measurement system according to claim 1, characterized in that the electrically conductive metal element (21) is connected between a contact box and the insulating and heat-conducting element (1).
3. The system according to claim 1, wherein the electrically conductive metal element (21) is connected at one end to an insulator to which a busbar conductor is connected and at the other end to the insulating and heat conducting element (1).
4. The temperature measuring system of the loop connection structure of the high-voltage switch equipment as claimed in claim 1, further comprising a data monitoring main unit (5) electrically connected to the output end of the temperature display and acquisition device (4), wherein a remote equipment interface is arranged on the data monitoring main unit (5).
5. The temperature measurement system of the loop connection structure of the high-voltage switchgear according to any of claims 1 to 4, wherein the conductive metal element (21) is a copper-based metal strip.
6. The temperature measurement system of the loop connection structure of the high-voltage switchgear according to any one of claims 1 to 4, wherein the insulating heat-conducting element (1) is any one of a Sic ceramic heat-conducting element, an AlN ceramic heat-conducting element, and a BeO ceramic heat-conducting element.
7. The system for temperature measurement of the connection structure of the high-voltage switchgear circuit according to any of the claims 1 to 4, characterized in that the temperature measurement guide wire (3) is a thermocouple transmission line.
8. The temperature measurement system of the loop connection structure of the high-voltage switch equipment according to any one of claims 1 to 4, wherein the temperature display acquisition device (4) comprises a linear temperature sensor and an alarm electrically connected to an output end of the linear temperature sensor, and the alarm is used for giving an alarm when the temperature detected by the linear temperature sensor is higher than a set temperature.
9. The temperature measuring system of the loop connection structure of the high-voltage switch gear according to any one of claims 1 to 4, wherein the electrically conductive metal element (21) and the insulating and heat-conducting element (1) are fastened together by insulating bolts and insulating adhesive.
10. The temperature measuring system of the loop connection structure of the high-voltage switch gear according to any one of claims 1 to 4, wherein the insulating and heat-conducting element (1) is connected to the connection structure (2) through a mounting hole, and a gap existing between the insulating and heat-conducting element (1) and the mounting hole is filled with an insulating material (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011014670.0A CN112146773A (en) | 2020-09-24 | 2020-09-24 | Temperature measuring system of high-voltage switch equipment loop connecting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011014670.0A CN112146773A (en) | 2020-09-24 | 2020-09-24 | Temperature measuring system of high-voltage switch equipment loop connecting structure |
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| CN112146773A true CN112146773A (en) | 2020-12-29 |
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| CN202011014670.0A Pending CN112146773A (en) | 2020-09-24 | 2020-09-24 | Temperature measuring system of high-voltage switch equipment loop connecting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4345433A1 (en) * | 2022-09-30 | 2024-04-03 | Siemens Aktiengesellschaft | Switchgear device |
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| CN103674320A (en) * | 2013-12-12 | 2014-03-26 | 常州赛尔克瑞特电气有限公司 | Contact temperature measuring device for gas-insulated high-voltage switch cabinet |
| CN105424209A (en) * | 2015-12-04 | 2016-03-23 | 广州泰鼎电气有限公司 | Sensor for directly contacting and measuring the temperature of high voltage object |
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| CN110857888A (en) * | 2018-08-24 | 2020-03-03 | 西门子工业公司 | Temperature sensor for thermal monitoring system of power distribution system |
| CN211527636U (en) * | 2020-03-24 | 2020-09-18 | 西安宝利铁路器材有限公司 | High tension switchgear contact alarm device that generates heat |
| CN212693098U (en) * | 2020-09-24 | 2021-03-12 | 浙江华电器材检测研究所有限公司 | Temperature measuring system of high-voltage switch equipment loop connecting structure |
-
2020
- 2020-09-24 CN CN202011014670.0A patent/CN112146773A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674320A (en) * | 2013-12-12 | 2014-03-26 | 常州赛尔克瑞特电气有限公司 | Contact temperature measuring device for gas-insulated high-voltage switch cabinet |
| CN105424209A (en) * | 2015-12-04 | 2016-03-23 | 广州泰鼎电气有限公司 | Sensor for directly contacting and measuring the temperature of high voltage object |
| CN206056807U (en) * | 2016-09-28 | 2017-03-29 | 国网江苏省电力公司电力科学研究院 | Loop abnormal heating contact passive and wireless monitoring device that a kind of high voltage isolator is through-flow |
| CN110857888A (en) * | 2018-08-24 | 2020-03-03 | 西门子工业公司 | Temperature sensor for thermal monitoring system of power distribution system |
| CN211527636U (en) * | 2020-03-24 | 2020-09-18 | 西安宝利铁路器材有限公司 | High tension switchgear contact alarm device that generates heat |
| CN212693098U (en) * | 2020-09-24 | 2021-03-12 | 浙江华电器材检测研究所有限公司 | Temperature measuring system of high-voltage switch equipment loop connecting structure |
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| EP4345433A1 (en) * | 2022-09-30 | 2024-04-03 | Siemens Aktiengesellschaft | Switchgear device |
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