CN108535595B - Track traffic traction power supply direct current insulation tubular busbar monitoring and protecting device - Google Patents

Track traffic traction power supply direct current insulation tubular busbar monitoring and protecting device Download PDF

Info

Publication number
CN108535595B
CN108535595B CN201710117795.8A CN201710117795A CN108535595B CN 108535595 B CN108535595 B CN 108535595B CN 201710117795 A CN201710117795 A CN 201710117795A CN 108535595 B CN108535595 B CN 108535595B
Authority
CN
China
Prior art keywords
electrically connected
output end
temperature
node
input end
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.)
Active
Application number
CN201710117795.8A
Other languages
Chinese (zh)
Other versions
CN108535595A (en
Inventor
陈道华
高国强
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.)
Jiangsu Shilin Electrical Equipment Co Ltd
Original Assignee
Jiangsu Shilin Electrical Equipment 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 Jiangsu Shilin Electrical Equipment Co Ltd filed Critical Jiangsu Shilin Electrical Equipment Co Ltd
Priority to CN201710117795.8A priority Critical patent/CN108535595B/en
Publication of CN108535595A publication Critical patent/CN108535595A/en
Application granted granted Critical
Publication of CN108535595B publication Critical patent/CN108535595B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08Locating faults in cables, transmission lines, or networks
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K3/00Thermometers giving results other than momentary value of temperature
    • G01K3/08Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

The invention discloses a track traffic traction power supply direct current insulation tubular bus monitoring and protecting device, which comprises a bus body, wherein the bottom of a connecting rod is connected with a first temperature sensor, the middle part of the inner side of a lower clamping sleeve is provided with a second temperature sensor, the left side of the inner part of the bus body is electrically connected with a controller, the output end of the first temperature sensor is electrically connected with the input end of a first temperature sensor, the output end of a processor is electrically connected with the input end of a wireless transmission module, the output end of the wireless transmission module is electrically connected with the input end of a signal receiving module, the output end of an analysis module is electrically connected with the input end of a comparison module, and the output end of the comparison module is electrically connected with the input end of a control module. The invention has the advantage of correctly monitoring the temperature change of the bus, and solves the problem that the normal use of the bus is prevented due to larger deviation of the temperature detection result of the bus.

Description

Track traffic traction power supply direct current insulation tubular busbar monitoring and protecting device
Technical Field
The invention relates to the technical field of bus monitoring, in particular to a direct current insulation tubular bus monitoring and protecting device for rail transit traction power supply.
Background
The bus is a total wire for a power station or a transformer substation to transmit electric energy, and the electric energy output by a generator, a transformer or a rectifier is transmitted to each user or other power substations through the bus.
In the process of using the bus, due to continuous transmission of electric power, a certain temperature can be generated on the bus, when the bus fails in use, the temperature on the bus can also change, the temperature on the bus can be monitored at present when the bus is used, the use condition of the bus is observed through monitoring the temperature of the bus, the temperature of the bus can be influenced by the temperature change in four seasons when the temperature of the bus is monitored by the existing monitoring device, the protection of the bus by the monitoring device can be influenced when the deviation occurs in the detection of the temperature, and the normal use of the bus can be prevented.
Disclosure of Invention
The invention aims to provide a rail transit traction power supply direct current insulation tubular bus monitoring and protecting device which has the advantage of being capable of accurately monitoring bus temperature change and solves the problem that the normal use of a bus is prevented due to larger bus temperature detection result deviation.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a track traffic pulls power supply direct current insulation tubular busbar monitoring protection device, includes the busbar body, the outside of busbar body is equipped with the insulating layer, the inboard equidistance of busbar body is equipped with the cable conductor, the middle part equidistance cover in busbar body outside is equipped with heat conduction aluminium strip, heat dissipation aluminium cover has been cup jointed in the outside of heat conduction aluminium strip, heat dissipation aluminium cover's both sides all are equipped with temperature-detecting device, temperature-detecting device includes upper cutting ferrule and lower cutting ferrule, the bottom of upper cutting ferrule inboard is connected with the connecting rod, the bottom of connecting rod runs through the busbar body and extends to the middle part of busbar body inboard, the bottom of connecting rod is connected with first temperature-sensing ware, the middle part of lower cutting ferrule inboard is equipped with the second temperature-sensing ware, the bottom of upper cutting ferrule both sides all is connected with first connecting block, the top of first connecting block is equipped with the second connecting block, the bottom of second connecting block is equipped with the nut, the bottom of nut runs through first connecting block and second connecting block and threaded connection, the inside left side electricity of busbar body is connected with the connecting rod, the temperature-sensing ware is connected with the temperature-sensing ware's the first temperature-sensing ware, the temperature-sensing ware is connected with the temperature-sensing ware's the input and the second temperature-sensing ware, the temperature sensor is connected with the input and the wireless input and output terminal, the wireless signal input and the temperature sensor module, the temperature sensor is connected with the temperature sensor input and the wireless sensor input and the temperature sensor, the analysis module comprises an analysis node I, an analysis node II and an analysis node III, the output end of the analysis module is electrically connected with the input end of the comparison module, the comparison module comprises a comparison node I, a comparison node II and a comparison node III, the output end of the comparison module is electrically connected with the input end of the control module, the control module comprises a control node I, a control node II and a control node III, and the output end of the control module is electrically connected with the input end of the controller.
Preferably, the output end of the first analysis node is electrically connected with the input end of the first comparison node, the output end of the first comparison node is electrically connected with the input end of the first control node, and the comparison temperature of the first comparison node is set to be 5 ℃.
Preferably, the output end of the second analysis node is electrically connected with the input end of the second comparison node, the output end of the second comparison node is electrically connected with the input end of the second control node, and the comparison temperature of the second comparison node is set to be 3 ℃.
Preferably, the output end of the third analysis node is electrically connected with the input end of the third comparison node, the output end of the third comparison node is electrically connected with the input end of the third control node, and the comparison temperature of the third comparison node is set to be 35 ℃.
Preferably, the two temperature detection devices are symmetrically distributed through the heat dissipation aluminum sleeve.
Preferably, the upper clamping sleeve and the lower clamping sleeve are arc-shaped sleeves, and the clamping sleeve and the lower clamping sleeve are movably sleeved with the bus body.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the cooperation of the temperature detection devices and the heat dissipation aluminum sleeve, when the internal temperature and the external temperature of the bus body are detected, the two temperature detection devices and the heat dissipation aluminum sleeve can carry out temperature detection before and after heat dissipation, so that the service condition of the bus can be judged according to the change of the temperature when the bus is monitored, through the cooperation of the analysis module and the comparison module, the analysis module can analyze the temperature difference of the two temperature detection devices outside the bus body before and after heat dissipation, so that the condition of the bus is judged according to the frequency of the temperature difference outside the bus, the analysis module can analyze the temperature difference inside the bus, so that the service condition of the bus is judged according to the frequency of the temperature difference inside the bus after heat dissipation, when the analysis module detects the external temperature and the internal temperature, the service condition of the bus can be judged, and when the frequency of the external temperature difference detected by the two temperature detection devices and the frequency of the internal temperature difference detected by the single temperature detection device and the frequency of the external temperature difference detected by the single temperature detection device and the internal temperature difference of the bus are greatly influenced, the service condition can be prevented from being greatly influenced, and the service life of the bus can be greatly prolonged, and the bus can be controlled by the normal temperature controller when the temperature difference is greatly controlled, and the service life of the bus is greatly controlled.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a side view of the temperature sensing device of the present invention;
FIG. 3 is a side view of a heat dissipating aluminum sleeve of the present invention;
fig. 4 is a block diagram illustrating the operation of the present invention.
In the figure: 1 bus body, 2 insulating layer, 3 cable lines, 4 heat conduction aluminium strip, 5 heat dissipation aluminium cover, 6 temperature detection device, 61 upper cutting ferrule, 62 lower cutting ferrule, 63 connecting rod, 64 first temperature sensor, 65 second temperature sensor, 66 first connecting block, 67 fastening bolt, 68 second connecting block, 69 nut, 7 controller, 8 first temperature sensor, 9 second temperature sensor, 10 treater, 11 wireless transmission module, 12 signal receiving module, 13 analysis module, 131 analysis node one, 132 analysis node two, 133 analysis node three, 14 contrast module, 141 contrast node one, 142 contrast node two, 143 contrast node three, 15 control module, 151 control node one, 152 control node two, 153 control node three.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a track traffic pulls DC insulation tubular busbar monitoring protection device of power supply, including busbar body 1, the outside of busbar body 1 is equipped with insulating layer 2, the inboard equidistance of busbar body 1 is equipped with cable conductor 3, the middle part equidistance cover in busbar body 1 outside is equipped with heat conduction aluminium strip 4, heat dissipation aluminium cover 5 has been cup jointed in the outside of heat conduction aluminium strip 4, two temperature-detecting device 6 are symmetrical distribution through heat dissipation aluminium cover 5, the both sides of heat dissipation aluminium cover 5 all are equipped with temperature-detecting device 6, through the cooperation use of temperature-detecting device 6 and heat dissipation aluminium cover 5, make two temperature-detecting device 6 when detecting the inside temperature of busbar body 1 and outside temperature, can carry out temperature detection with heat dissipation aluminium cover 5 before and after dispelling the heat, thereby let the busbar when monitoring the temperature, can judge the service condition of busbar according to the change of temperature, the temperature detection device 6 comprises an upper cutting sleeve 61 and a lower cutting sleeve 62, the upper cutting sleeve 61 and the lower cutting sleeve 62 are arc sleeves, the upper cutting sleeve 61 and the lower cutting sleeve 62 are movably sleeved with the bus body 1, the bottom of the inner side of the upper cutting sleeve 61 is connected with a connecting rod 63, the bottom of the connecting rod 63 penetrates through the bus body 1 and extends to the middle of the inner side of the bus body 1, the bottom of the connecting rod 63 is connected with a first temperature sensor 64, the middle of the inner side of the lower cutting sleeve 62 is provided with a second temperature sensor 65, the bottoms of the two sides of the upper cutting sleeve 61 are respectively connected with a first connecting block 66, the top of the first connecting block 66 is provided with a fastening bolt 67, the tops of the two sides of the lower cutting sleeve 62 are respectively connected with a second connecting block 68, the bottom of the second connecting block 68 is provided with a nut 69, the fastening bolt 67 and the nut 69 can control the connection tightness of the upper cutting sleeve 61 and the lower cutting sleeve 62 through the cooperation of the fastening bolt 67 and the nut 69, thereby be convenient for temperature-detecting device 6 to install and dismantle, the bottom of fastening bolt 67 runs through first connecting block 66 and second connecting block 68 and nut 69 threaded connection, and the inside left side electricity of generating line body 1 is connected with controller 7.
The output end of the first temperature sensor 64 is electrically connected with the input end of the first temperature sensor 8, the output end of the second temperature sensor 65 is electrically connected with the input end of the second temperature sensor 9, the output end of the first temperature sensor 8 and the output end of the second temperature sensor 9 are electrically connected with the input end of the processor 10, the output end of the processor 10 is electrically connected with the input end of the wireless transmission module 11, the output end of the wireless transmission module 11 is electrically connected with the input end of the signal receiving module 12, the output end of the signal receiving module 12 is electrically connected with the input end of the analysis module 13, the analysis module 13 comprises an analysis node I131, an analysis node II 132 and an analysis node III 133, the output end of the analysis module 13 is electrically connected with the input end of the comparison module 14, the comparison module 14 comprises a comparison node I141, a comparison node II 142 and a comparison node III 143, the output end of the comparison module 14 is electrically connected with the input end of the control module 15, the control module 15 comprises a first control node 151, a second control node 152 and a third control node 153, the analysis module 13 is matched with the comparison module 14 to enable the analysis module 13 to analyze the temperature difference of the two temperature detection devices 6 outside the bus body 1 before and after heat dissipation, so that whether the bus is used is judged according to the frequency of the temperature difference outside the bus, meanwhile, the analysis module 13 can also analyze the temperature difference inside the bus, so that the use condition of the bus is judged according to the frequency of the temperature difference inside the bus after heat dissipation, when the analysis module 13 detects the external temperature and the internal temperature of a single temperature detection device 6, the use condition of the bus can be judged according to the frequency of the external temperature and the internal temperature difference, when the frequency of the external temperature difference detected by the two temperature detection devices 6 and the frequency of the internal temperature difference detected by the single temperature detection device 6 are too high, the normal use of the bus is affected, the service life of the bus is reduced, the output end of the analysis node I131 is electrically connected with the input end of the comparison node I141, the output end of the comparison node I141 is electrically connected with the input end of the control node I151, the comparison temperature of the comparison node I141 is set to be 5 ℃, the temperature difference between the two first temperature sensors 64 is between 5 ℃, the output end of the analysis node II 132 is electrically connected with the input end of the comparison node II 142, the output end of the comparison node II 142 is electrically connected with the input end of the control node II 152, the comparison temperature of the comparison node II 142 is set to be 3 ℃, the temperature difference between the two second temperature sensors 65 is between 3 ℃, the output end of the analysis node III 133 is electrically connected with the input end of the comparison node III 143, the output end of the comparison node III 143 is electrically connected with the input end of the control node III 153, the comparison node III 143 is set to be 35 ℃, the comparison temperature sensor is set to be 35 ℃, the first temperature sensor 64 is electrically connected with the control module 7, and the temperature difference can be prevented from being influenced by the control module 15 when the temperature difference is larger than the normal, and the temperature difference can be controlled by the control module 15, and the temperature difference can be controlled by the control module is greatly controlled by the temperature sensor 7.
During the use, the temperature that two first temperature sensors 64 and two second temperature sensors 65 sensed is passed into the treater 10 through first temperature sensor 8 and second temperature sensor 9, and the treater 10 is through wireless transmission, and analysis module 13 analyzes the temperature that two first temperature sensors 64 sensed, the temperature difference that two second temperature sensors 65 sensed and the temperature difference that first temperature sensors 64 and second temperature sensors 65 sensed, compares the temperature difference that will sense with contrast module 14, and the frequency of contrast temperature difference change, and when the frequency of one of them temperature difference change is too big, control module 15 control controller 7 disconnection generating line.
In summary, the rail transit traction power supply direct current insulation tubular bus monitoring and protecting device is used by the analysis module 13, the comparison module 14 and the control module 15, so that when the bus monitors the temperature generated during bus use, the bus can be protected according to the change of the temperature difference, and the problem that the normal use of the bus is hindered due to the fact that the deviation of the temperature result of bus monitoring is large is solved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement "comprises one … … -defined element does not exclude that an additional identical element is present in a process, method, article or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides a track traffic pulls insulating tubular busbar monitoring protection device of power supply direct current, includes busbar body (1), its characterized in that: the utility model discloses a bus bar, including bus bar body (1), insulating layer (2) are equipped with in the outside of bus bar body (1), the inside equidistance cover in bus bar body (1) outside is equipped with heat conduction aluminium strip (4), heat dissipation aluminium sleeve (5) have been cup jointed in the outside of heat conduction aluminium strip (4), the both sides of heat dissipation aluminium sleeve (5) all are equipped with temperature-detecting device (6), temperature-detecting device (6) include cutting ferrule (61) and lower cutting ferrule (62), the bottom of the inboard of cutting ferrule (61) is connected with connecting rod (63), the bottom of connecting rod (63) runs through bus bar body (1) and extends to the inside middle part of bus bar body (1), the bottom of connecting rod (63) is connected with first temperature-sensing ware (64), the inside middle part of cutting ferrule (62) is equipped with second temperature-sensing ware (65), the bottom of cutting ferrule (61) both sides all is connected with first connecting block (66), the top of first connecting block (66) is equipped with fastening bolt (67), the top of lower cutting ferrule (62) both sides is connected with second connecting block (68), the bottom of the fastening bolt (67) penetrates through the first connecting block (66) and the second connecting block (68) to be in threaded connection with the nut (69), and the left side inside the bus body (1) is electrically connected with the controller (7);
the output end of the first temperature sensor (64) is electrically connected with the input end of the first temperature sensor (8), the output end of the second temperature sensor (65) is electrically connected with the input end of the second temperature sensor (9), the output end of the first temperature sensor (8) and the output end of the second temperature sensor (9) are electrically connected with the input end of the processor (10), the output end of the processor (10) is electrically connected with the input end of the wireless transmission module (11), the output end of the wireless transmission module (11) is electrically connected with the input end of the signal receiving module (12), the output end of the signal receiving module (12) is electrically connected with the input end of the analysis module (13), the analysis module (13) comprises an analysis node I (131), an analysis node II (132) and an analysis node III (133), the output end of the analysis module (13) is electrically connected with the input end of the comparison module (14), the comparison module (14) comprises a comparison node I (141), a comparison node II (142) and a control node III (133), the output end of the analysis module (13) is electrically connected with the input end of the comparison module (14), the control node II (14) comprises a control node III (151), the output end of the control module (15) is electrically connected with the input end of the controller (7); the output end of the analysis node I (131) is electrically connected with the input end of the comparison node I (141), the output end of the comparison node I (141) is electrically connected with the input end of the control node I (151), and the comparison temperature of the comparison node I (141) is set to be 5 ℃; the output end of the analysis node II (132) is electrically connected with the input end of the comparison node II (142), the output end of the comparison node II (142) is electrically connected with the input end of the control node II (152), and the comparison temperature of the comparison node II (142) is set to be 3 ℃.
2. The rail transit traction power supply direct current insulation tubular busbar monitoring and protecting device according to claim 1, wherein the device comprises the following components: the output end of the analysis node III (133) is electrically connected with the input end of the comparison node III (143), the output end of the comparison node III (143) is electrically connected with the input end of the control node III (153), and the comparison temperature of the comparison node III (143) is set to be 35 ℃.
3. The rail transit traction power supply direct current insulation tubular busbar monitoring and protecting device according to claim 1, wherein the device comprises the following components: the two temperature detection devices (6) are symmetrically distributed through the heat dissipation aluminum sleeve (5).
4. The track traffic traction power supply direct current insulation tubular busbar monitoring and protecting device according to claim 1, the method is characterized in that: the upper clamping sleeve (61) and the lower clamping sleeve (62) are arc-shaped sleeves, and the upper clamping sleeve (61) and the lower clamping sleeve (62) are movably sleeved with the bus body (1).
CN201710117795.8A 2017-03-01 2017-03-01 Track traffic traction power supply direct current insulation tubular busbar monitoring and protecting device Active CN108535595B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710117795.8A CN108535595B (en) 2017-03-01 2017-03-01 Track traffic traction power supply direct current insulation tubular busbar monitoring and protecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710117795.8A CN108535595B (en) 2017-03-01 2017-03-01 Track traffic traction power supply direct current insulation tubular busbar monitoring and protecting device

Publications (2)

Publication Number Publication Date
CN108535595A CN108535595A (en) 2018-09-14
CN108535595B true CN108535595B (en) 2024-02-02

Family

ID=63488526

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710117795.8A Active CN108535595B (en) 2017-03-01 2017-03-01 Track traffic traction power supply direct current insulation tubular busbar monitoring and protecting device

Country Status (1)

Country Link
CN (1) CN108535595B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5319356A (en) * 1991-08-01 1994-06-07 Mitsubishi Denki Kabushiki Kaisha Apparatus for surveillance of bus-bar temperature
KR101101907B1 (en) * 2010-07-28 2012-01-02 한국전력공사 Spacer damper and temperature monitor system of transmission line having the same
CN204575201U (en) * 2015-05-22 2015-08-19 和显泽 Drainage thread on-line monitoring system
WO2017024924A1 (en) * 2015-08-12 2017-02-16 清华大学 Non-invasive high-voltage power transmission cable online automatic maintenance and defect repair system
CN206523585U (en) * 2017-03-01 2017-09-26 江苏士林电气设备有限公司 A kind of track traffic traction power supply D.C. isolation tube type bus monitoring and protecting device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2011203004B2 (en) * 2010-11-11 2014-02-20 Zhejiang Tuwei Electricity Technology Co.,Ltd Technology and device for precisely measuring temperature of cable joint on the basis of radio frequency technique
US10132692B2 (en) * 2013-12-06 2018-11-20 Schneider Electric USA, Inc. Temperature sensor for bolted connections

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5319356A (en) * 1991-08-01 1994-06-07 Mitsubishi Denki Kabushiki Kaisha Apparatus for surveillance of bus-bar temperature
KR101101907B1 (en) * 2010-07-28 2012-01-02 한국전력공사 Spacer damper and temperature monitor system of transmission line having the same
CN204575201U (en) * 2015-05-22 2015-08-19 和显泽 Drainage thread on-line monitoring system
WO2017024924A1 (en) * 2015-08-12 2017-02-16 清华大学 Non-invasive high-voltage power transmission cable online automatic maintenance and defect repair system
CN206523585U (en) * 2017-03-01 2017-09-26 江苏士林电气设备有限公司 A kind of track traffic traction power supply D.C. isolation tube type bus monitoring and protecting device

Also Published As

Publication number Publication date
CN108535595A (en) 2018-09-14

Similar Documents

Publication Publication Date Title
CN203465382U (en) Insulation monitoring system of high-voltage cable sheath
WO2008058466A1 (en) A ground insulation resistance detecting device and method for electrolytic pot sets
CN203824654U (en) Cable joint on-line monitoring system
CN102749150A (en) Cable head temperature online monitoring device
CN203688090U (en) Online cable temperature monitoring system
CN203132720U (en) A temperature rise online monitoring device of a high-voltage device cable connector
CN103808430A (en) High-voltage device cable head temperature online monitoring device
CN202094565U (en) Structure of copper-aluminium composite conductor bus duct
CN203929279U (en) A kind of circuit wire clamp temperature rise live monitoring device
CN104568211A (en) Switch cabinet contact and busbar connection point temperature rise online monitoring device and working method thereof
CN205212128U (en) Little generating line cross -over connection connecting cable line in screen top
CN108535595B (en) Track traffic traction power supply direct current insulation tubular busbar monitoring and protecting device
CN205826149U (en) A kind of cable temperature measuring equipment
CN206523236U (en) A kind of temperature detection warning device for cable
CN205982444U (en) Fault indication system suitable for distribution lines
CN205724554U (en) A kind of central high-voltage switch cabinet with intelligent aeration
CN202042820U (en) Puncture wire clip conveying rod
CN204373809U (en) A kind of watchband type passive and wireless temperature measurement on-line device
CN203895633U (en) Short circuit grounding wire suitable for box transformer substation and electricity distribution room
CN102636734B (en) Low-voltage electric fire prevention and detection device
CN205506231U (en) Support cable joint temperature measuring device of generating line power supply
CN206523585U (en) A kind of track traffic traction power supply D.C. isolation tube type bus monitoring and protecting device
CN105628225B (en) A kind of temperature measuring equipment and the GIL using the temperature measuring equipment
CN210486947U (en) Cable temperature detection control system of distribution outgoing line loop
CN201348810Y (en) Wire and cable terminal overheating monitoring device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant