CN206644676U - Electric locomotive traction current sensing means - Google Patents
Electric locomotive traction current sensing means Download PDFInfo
- Publication number
- CN206644676U CN206644676U CN201621166806.9U CN201621166806U CN206644676U CN 206644676 U CN206644676 U CN 206644676U CN 201621166806 U CN201621166806 U CN 201621166806U CN 206644676 U CN206644676 U CN 206644676U
- Authority
- CN
- China
- Prior art keywords
- rail
- section
- air deflector
- measured
- side section
- 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
Links
Landscapes
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The utility model discloses a kind of electric locomotive traction current sensing means, and to detect the traction current of locomotive in section to be measured on track, track includes section to be measured and the first side section and the second side section positioned at section both sides to be measured.The electric locomotive traction current sensing means includes current measuring element, guiding subassembly and the insulation joint located at section both ends to be measured, first side section turns on via guiding subassembly with the second side section, and section to be measured turns on via current measuring element with the first side section and/or the second side section.The utility model can measure the traction current of one or more locomotive in the specific section to be measured on the ground exactly by the way that rail is divided into section to be measured and the side section of both sides.Meanwhile the utility model is by setting guiding subassembly to guide the electric current of the first side section to the second side section, so as to ensure that the current measuring element can effectively and accurately measure the locomotive traction electric current in section to be measured.
Description
Technical field
Train apparatus technical field is the utility model is related to, is filled more particularly, to a kind of electric locomotive traction current detecting
Put.
Background technology
In electric railway, electric locomotive needs to obtain driving power from contact net.The driving current of electric locomotive claims
For traction current.The flow cycle of traction current is to be sent to contact net from traction substation, then flows through electric locomotive, is again passed through
Rail, traction substation is flowed back to again finally by rail and the earth.It follows that traction is had on the rail of electric railway
Electric current flows through.And in order to connect traction current loop, adjacent rail is usually electrical communication.For the steel of one section of particular section
Rail, often electric locomotive traction electric current flows through on existing this section of rail, also there is the traction of the electric locomotive in the other positions of distant place
Electric current flows through.
In electric locomotive maintenance repair work, it is sometimes necessary to it is up to detect a certain section of specific rail section on the ground
The traction current summation for the one or several electric locomotive sailed.And special detection can be used for also to determine rail there is presently no one
The equipment of section traction current.
The content of the invention
Based on this, a kind of the defects of the utility model is to overcome prior art, there is provided electric locomotive traction current detecting
Device, it can detect the traction current of the electric locomotive in particular section, avoid other and be not required to measure traction electricity in section
The influence of stream, ensure that measurement accuracy.
Its technical scheme is as follows：
A kind of electric locomotive traction current sensing means, to detect the traction current of locomotive in section to be measured on track,
The track includes the section to be measured and the first side section and the second side section positioned at the section both sides to be measured, bag
Current measuring element, guiding subassembly and the insulation joint located at the section both ends to be measured are included, the first side section is via institute
Guiding subassembly is stated to turn on the second side section, the section to be measured via the current measuring element and described first by
Lateral areas section and/or the second side section conducting.
In one of the embodiments, the guiding subassembly includes the first air deflector, the second air deflector and Jumper conductors, institute
State track and be provided with the first rail and the second rail that be arranged in parallel, the first rail and the second rail in the first side section
Be connected with first air deflector, the first rail and the second rail in the second side section with second water conservancy diversion
Device is connected, and first air deflector is connected by the Jumper conductors with second air deflector.
In one of the embodiments, first air deflector and second air deflector are equipped with No. 1 terminal, No. 2 ends
Son and No. 3 terminals, No. 1 terminal and No. 2 terminals turn on No. 3 terminals；
No. 1 terminal of first air deflector is connected with the first rail in the section to be measured, first air deflector
No. 2 terminals be connected with the second rail in the section to be measured, No. 1 terminal and No. 2 terminals in first air deflector are equal
Turned on via the current measuring element with No. 3 terminals, No. 3 terminals and first flanking region of first air deflector
Section in the first rail and the second rail be all connected with, afterwards No. 3 terminals of first air deflector via the Jumper conductors with
No. 3 terminals connection of second air deflector, No. 1 terminal and first in the second side section of second air deflector
Rail is connected, and No. 2 terminals of second air deflector are connected with the second rail in the second side section.
In one of the embodiments, the first rail in the section to be measured and the second rail with first water conservancy diversion
Device connects, and the current measuring element includes the first current sensor and the second current sensor, first current sensor
Between the first rail and first air deflector in the section to be measured, second current sensor is treated located at described
Survey between the second rail in section and first air deflector.
In one of the embodiments, first air deflector and second air deflector are equipped with No. 1 terminal, No. 2 ends
Son and No. 3 terminals, No. 1 terminal and No. 2 terminals turn on No. 3 terminals；
No. 1 terminal of first air deflector is connected with the first rail in the section to be measured, and described first leads
First current sensor is provided between the first rail in No. 1 terminal and the section to be measured of stream device, described first leads
Stream device No. 2 terminals be connected with the second rail in the section to be measured, and No. 2 terminals of first air deflector with it is described
Be provided with second current sensor between the second rail in section to be measured, No. 3 terminals of first air deflector with it is described
The first rail and the second rail in first side section are all connected with, and No. 3 terminals of first air deflector are via described afterwards
Jumper conductors are connected with No. 3 terminals of second air deflector, No. 1 terminal and second flanking region of second air deflector
The first rail connection in section, No. 2 terminals of second air deflector are connected with the second rail in the second side section.
In one of the embodiments, first air deflector and second air deflector are choke transformer.
In one of the embodiments, the track is provided with the first rail and the second rail be arrangeding in parallel, the water conservancy diversion
Component includes the first Jumper conductors and the second Jumper conductors, and the of described first Jumper conductors one end and the first side section
One rail connects, and the other end is connected with the first rail of the second side section, described second Jumper conductors one end with it is described
The two rail connection of first side section, the other end are connected with the second rail of the second side section.
In one of the embodiments, in addition to two lead-in conductors and two extraction wires, two lead-in conductors
One end be connected respectively with the first rail in the section to be measured and the second rail, the other end with the current measuring element
Connection, one end of two extraction wires is connected with the current measuring element, the other end respectively with the first side section
Or second the first rail in side section and the connection of the second rail.
In one of the embodiments, in addition to two lead-in conductors and two extraction wires, the current measuring element
Including the first current sensor and the second current sensor, described first current sensor one end passes through a lead-in conductor and institute
State the first rail connection of section to be measured, the other end passes through an extraction wire and the first side section or described the
The first rail connection of two side sections, described second current sensor one end passes through with being treated described in another lead-in conductor
The second rail connection of section is surveyed, the other end passes through another extraction wire and the first side section or described second
The second rail connection of side section.
The advantages of below to preceding solution or principle illustrate：
The utility model carries out dividing processing by using insulation joint at the both ends of rail section to be measured, so as to by area to be measured
The side section of section and its both sides is separated, and forms an independent rail section, and then can measure on the ground exactly
The traction current of one or more locomotive in the specific section to be measured.Meanwhile the utility model is by setting guiding subassembly will
The electric current of first side section is guided to the second side section, so that the outer locomotive traction electric current passed through of detector segments passes through
The guiding subassembly flows through, and then ensures the size of locomotive traction electric current in detector segments not by the machine of the both sides outside detector segments
The interference of car traction current.In addition, described current measuring element one end turns on the section to be measured, the other end and the first side
Section and/or the conducting of the second side section, to form current path, so as to ensure that the current measuring element can be effectively and smart
The locomotive traction electric current in section to be measured is measured accurately.
The guiding subassembly includes the first air deflector, the second air deflector and Jumper conductors, by the first air deflector by first
The electric current collection of first rail and the second rail in side section, the second air deflector is by the first rail in the second side section and
The electric current collection of two rail, the first air deflector and the second air deflector are connected by Jumper conductors again afterwards, is led to reduce bridging
Body quantity, reduce cost of manufacture.
Section to be measured described in the utility model is directly connected in the first air deflector, and then passes through the first air deflector and bridging
Conductor etc. forms current loop, to form current detection circuit, reduces cost of manufacture.
First air deflector and second air deflector are choke transformer so that the utility model primary structure is equal
Existing structure in electric railway can be continued to use, further reduces cost of manufacture.
Brief description of the drawings
Fig. 1 is the structural representation of the electric locomotive traction current sensing means described in first embodiment；
Fig. 2 is the structural representation of the electric locomotive traction current sensing means described in second embodiment；
Fig. 3 is the structural representation of the electric locomotive traction current sensing means described in 3rd embodiment；
Fig. 4 is the structural representation of the electric locomotive traction current sensing means described in fourth embodiment.
Description of reference numerals：
10th, section to be measured, the 20, first side section, the 30, second side section, the 40, first rail, the 50, second rail,
100th, insulation joint, 200, guiding subassembly, the 210, first air deflector, the 220, second air deflector, 230, Jumper conductors, 240, first across
Connect conductor, the 250, second Jumper conductors, the 300, first wire, the 400, second wire, 500, privates, 600, current detecting member
Part, the 610, first current sensor, the 620, second current sensor, 700, lead-in conductor, 800, extraction wire.
Embodiment
It is below in conjunction with accompanying drawing and specifically real for the purpose of this utility model, technical scheme and advantage is more clearly understood
Mode is applied, the utility model is described in further detail.It should be appreciated that embodiment described herein
Only to explain the utility model, the scope of protection of the utility model is not limited.
It is understood that term as used herein " first ", " second " etc. are used to distinguish object herein, not
As the limitation to their orders and quantity.
Electric locomotive traction current sensing means described in the utility model, to detect certain specific section to be measured on track
The traction current of a locomotive or several locomotives in 10.Now setting the track includes the section 10 (i.e. detector segments) to be measured
With the first side section 20 and the second side section 30 positioned at the both sides of section 10 to be measured.As shown in figure 1, the electric locomotive
Traction current detection means includes current measuring element 600, guiding subassembly 200 and the insulation located at the both ends of section 10 to be measured
Section 100, the insulation joint 100 at both ends separate the section 10 to be measured independent.The first side section 20 is led via described
Stream component 200 turns on the second side section 30.The section to be measured 10 via the current measuring element 600 with it is described
First side section 20 and/or the second side section 30 turn on.
Track is carried out dividing processing by the utility model by using insulation joint 100, so as to by section 10 to be measured and its two
The side section of side is separated, and forms an independent rail section, and then it is specific to measure this on the ground exactly
The traction current of one or more locomotive in section 10 to be measured.Meanwhile the utility model is by setting guiding subassembly 200 by first
The electric current of side section 20 is guided to the second side section 30, so that the locomotive traction electric current passed through beyond section to be measured 10
Flowed through by the guiding subassembly 200, and then ensure the size of locomotive traction electric current in section 10 to be measured not by from section to be measured
The interference of the locomotive traction electric current of 10 outer both sides.In addition, described one end of current measuring element 600 is led with the section 10 to be measured
Logical, the other end turns on the first side section 20 and/or the second side section 30, to form current path, so as to ensure this
Current measuring element 600 can effectively and accurately measure the locomotive traction electric current in section 10 to be measured.
Specifically, in the present embodiment, the guiding subassembly 200 includes the first air deflector 210, the and of the second air deflector 220
Jumper conductors 230, the Jumper conductors 230 are "Jumper" cable etc..Now setting the rail being be arranged in parallel on the track is respectively
First rail 40 and the second rail 50.The first rail 40 and the second rail 50 in the first side section 20 pass through first
Wire 300 is connected with first air deflector 210；The first rail 40 and the second rail 50 in the second side section 30 is equal
It is connected by the second wire 400 with second air deflector 220；First air deflector 210 passes through the Jumper conductors 230 again
It is connected with second air deflector 220.The utility model is by the first air deflector 210 by the first rail in the first side section 20
40 and second rail 50 electric current collection, the second air deflector 220 is by the first rail 40 and the second rail in the second side section 30
50 electric current collection, connect the first air deflector 210 and the second air deflector 220 by Jumper conductors 230 again afterwards, to reduce across
The quantity of conductor 230 is connect, reduces cost of manufacture.
Specifically, as shown in figure 1, first air deflector 210 and second air deflector 220 are equipped with No. 1 terminal, 2
Number terminal and No. 3 terminals, No. 1 terminal and No. 2 terminals turn on No. 3 terminals.
No. 1 terminal of first air deflector 210 passes through first in a privates 500 and the section 10 to be measured
Rail 40 connects；Its No. 2 terminals are connected by another privates 500 with the second rail 50 in the section 10 to be measured；
Its No. 3 terminals are equal by two first wires 300 and the first rail 40 in the first side section 20 and the second rail 50
Connect and be connected via No. 3 terminals after the Jumper conductors 230 with second air deflector 220.Second air deflector 220
No. 1 terminal be connected by second wire 400 with the first rail 40 in the second side section 30, its No. 2 terminals
It is connected by another second wire 400 with the second rail 50 in the second side section 30.First air deflector 210
No. 1 interior terminal and No. 2 terminals turn on via after the current measuring element 600 with No. 3 terminals in it.In the present embodiment
In, the current measuring element 600 may be configured as a current sensor.
Unlike the embodiments above, in another embodiment, the current measuring element 600 includes two electric currents
Sensor, respectively the first current sensor 610 and the second current sensor 620, as shown in Figure 2.First current sense
Between No. 1 terminal of the first rail 40 and first air deflector 210 of the device 610 in the section 10 to be measured, described the
No. 2 terminals of second rail 50 and first air deflector 210 of two current sensors 600 in the section 10 to be measured it
Between.The section to be measured can be obtained by the way that the testing result of the first current sensor 610 with the second current sensor 620 is added
Locomotive traction size of current in 10.No. 1 terminal and No. 2 terminals in first air deflector 210 directly with No. 3 in it
Terminal connect, and No. 3 terminals be connected with two first wires 300 after by Jumper conductors 230 and second air deflector
220 No. 3 terminals connection.
Preferably, first air deflector 210 and second air deflector 220 are choke transformer.Described first leads
No. 3 terminals for flowing device 210 and second air deflector 220 are the central point terminal of choke transformer.Above-mentioned design causes this reality
Existing structure in electric railway can be continued to use with new primary structure, further reduces cost of manufacture.The utility model also may be used
First air deflector 210 and second air deflector 220 are directly designed to conductor structure or communication line according to being actually needed
Coil structures.
It should be noted that two first wires 300 described in the present embodiment both may connect to No. 1 of the first air deflector 210
Terminal and No. 2 terminals, it may be also connected directly to No. 3 terminals of the first air deflector 210.Two water conservancy diversion of privates 500 and first
Connected mode between device 210 is also same as above.In addition, the connected mode between two second wires 400 and the second air deflector 220
Ibid.Now it should be noted that when current measuring element 600 is a current sensor, its arrival end is only for two pieces the
The electric current of three wires 500 flows into；When current measuring element 600 is two current sensors, it can be respectively arranged on two the 3rd
On the path of wire 500.Current measuring element 600 described in the present embodiment can be realized a variety of according to the circuit connection knowledge of routine
Connected mode, do not repeat one by one herein.
It is unlike the embodiments above, in another embodiment, as shown in figure 3, the guiding subassembly 200 can be direct
It is made up of the first Jumper conductors 240 ("Jumper" cable etc.) and the second Jumper conductors 250 ("Jumper" cable etc.).First bridging is led
The one end of body 240 is connected with the first rail 40 of the first side section 20, and the of the other end and the second side section 30
One rail 40 connects；Described one end of second Jumper conductors 250 is connected with two rail of the first side section 20, the other end with
Second rail 50 of the second side section 30 connects.
Correspondingly, when using a current sensor 600, the current sensor 600 then passes through two lead-in conductors 700
It is attached with two extraction wires 800.Specifically, one end of two lead-in conductors 700 respectively with the section to be measured
The first rail 40 and the second rail 50 in 10 connect, and are connected after other end convergence with the current measuring element 600；Two institutes
State extraction wire 800 one end converge and be connected with the current measuring element 600, the other end then respectively with the first side section
20 or second the first rail 40 in side section 30 and the second rail 50 connect.
As shown in figure 4, when using two current sensors 600, described one end of first current sensor 610 then passes through one
Root lead-in conductor 700 is connected with the first rail 40 of the section 10 to be measured, and the other end then passes through an extraction wire 800 and institute
The first rail 40 for stating the first side section 20 or the second side section 30 connects；Second current sensor 620 1
End is connected by another lead-in conductor 700 with the second rail 50 of the section 10 to be measured, and the other end is then drawn by another
The second rail 50 for going out wire 800 with the side section 30 of the first side section 20 or described second is connected.
In summary, the utility model is enabled to using the method (adding insulation joint 100 in both ends) of dividing processing rail
Detector segments are independent and not examined section it is outer other with the influence of rail locomotive traction current, improve effective journey of measurement
Degree.At the same time, the utility model between the side section of both sides by setting guiding subassembly 200, to ensure detecting
The traction current of other electric locomotives that need not be measured outside section is all via Jumper conductors 230, without flow through detection zone
Section, avoid other positions electric locomotive traction electric current and produce interference to being tested electric locomotive traction electric current in detector segments, carry
The high order of accuarcy of measurement.In addition, by electrical communication mode described in the utility model, no matter the traction current of locomotive from
Which direction flows into, and can accurately measure the locomotive traction electric current in detector segments, it is ensured that the feasibility of measurement.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, several modification and improvement can also be made, these belong to this
The protection domain of utility model.
Claims (9)
- A kind of 1. electric locomotive traction current sensing means, to detect the traction current of locomotive in section to be measured on track, institute Stating track includes the section to be measured and the first side section and the second side section positioned at the section both sides to be measured, and it is special Sign is, including current measuring element, guiding subassembly and the insulation joint located at the section both ends to be measured, first flanking region Section turns on via the guiding subassembly with the second side section, and the section to be measured is via the current measuring element and institute State the first side section and/or the second side section conducting.
- 2. electric locomotive traction current sensing means according to claim 1, it is characterised in that the guiding subassembly includes First air deflector, the second air deflector and Jumper conductors, the track is provided with the first rail and the second rail be arrangeding in parallel, described The first rail and the second rail in first side section are connected with first air deflector, in the second side section First rail and the second rail are connected with second air deflector, first air deflector by the Jumper conductors with it is described Second air deflector connects.
- 3. electric locomotive traction current sensing means according to claim 2, it is characterised in that first air deflector and Second air deflector is equipped with No. 1 terminal, No. 2 terminals and No. 3 terminals, No. 1 terminal and No. 2 terminals with it is described No. 3 terminal conductings；No. 1 terminal of first air deflector is connected with the first rail in the section to be measured, No. 2 of first air deflector Terminal is connected with the second rail in the section to be measured, and No. 1 terminal and No. 2 terminals in first air deflector are via institute State current measuring element to turn on No. 3 terminals, in No. 3 terminals and the first side section of first air deflector First rail and the second rail are all connected with, and No. 3 terminals of first air deflector are via the Jumper conductors and described the afterwards No. 3 terminals connection of two air deflectors, No. 1 terminal and the first rail in the second side section of second air deflector connect Connect, No. 2 terminals of second air deflector are connected with the second rail in the second side section.
- 4. electric locomotive traction current sensing means according to claim 2, it is characterised in that in the section to be measured First rail and the second rail are connected with first air deflector, the current measuring element include the first current sensor and Second current sensor, first rail and first air deflector of first current sensor in the section to be measured Between, between the second rail and first air deflector of second current sensor in the section to be measured.
- 5. electric locomotive traction current sensing means according to claim 4, it is characterised in that first air deflector and Second air deflector is equipped with No. 1 terminal, No. 2 terminals and No. 3 terminals, No. 1 terminal and No. 2 terminals with it is described No. 3 terminal conductings；No. 1 terminal of first air deflector is connected with the first rail in the section to be measured, and first air deflector No. 1 terminal and the section to be measured in the first rail between be provided with first current sensor, first air deflector No. 2 terminals be connected with the second rail in the section to be measured, and No. 2 terminals of first air deflector with it is described to be measured Second current sensor, No. 3 terminals and described first of first air deflector are provided between the second rail in section The first rail and the second rail in side section are all connected with, and No. 3 terminals of first air deflector are via the bridging afterwards Conductor is connected with No. 3 terminals of second air deflector, in No. 1 terminal and the second side section of second air deflector The connection of the first rail, No. 2 terminals of second air deflector are connected with the second rail in the second side section.
- 6. the electric locomotive traction current sensing means according to claim 3 or 5, it is characterised in that first water conservancy diversion Device and second air deflector are choke transformer.
- 7. electric locomotive traction current sensing means according to any one of claim 1 to 5, it is characterised in that described Track is provided with the first rail and the second rail be arrangeding in parallel, and the guiding subassembly includes the first Jumper conductors and the second bridging is led Body, described first Jumper conductors one end are connected with the first rail of the first side section, the other end and second side The first rail connection of section, described second Jumper conductors one end are connected with two rail of the first side section, the other end It is connected with the second rail of the second side section.
- 8. electric locomotive traction current sensing means according to claim 7, it is characterised in that also led including two introducings Line and two extraction wires, one end of two lead-in conductors respectively with the first rail and the second steel in the section to be measured Rail connects, and the other end is connected with the current measuring element, one end of two extraction wires with the current detecting Element is connected, and the other end is connected with the first rail in the first side section or the second side section and the second rail respectively.
- 9. electric locomotive traction current sensing means according to claim 7, it is characterised in that also led including two introducings Line and two extraction wires, the current measuring element include the first current sensor and the second current sensor, and described first Current sensor one end is connected by a lead-in conductor with the first rail of the section to be measured, and the other end passes through described in one Extraction wire is connected with the first rail of the first side section or the second side section, second current sensor One end with the second rail of section to be measured described in another lead-in conductor by being connected, and the other end described in another by drawing The second rail for going out wire with the first side section or the second side section is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621166806.9U CN206644676U (en) | 2016-10-31 | 2016-10-31 | Electric locomotive traction current sensing means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621166806.9U CN206644676U (en) | 2016-10-31 | 2016-10-31 | Electric locomotive traction current sensing means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206644676U true CN206644676U (en) | 2017-11-17 |
Family
ID=60282940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621166806.9U Active CN206644676U (en) | 2016-10-31 | 2016-10-31 | Electric locomotive traction current sensing means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206644676U (en) |
-
2016
- 2016-10-31 CN CN201621166806.9U patent/CN206644676U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106569017B (en) | A kind of rail traffic stray electrical current detection method and detection system | |
| CN206671472U (en) | High-tension cable local discharge detection device | |
| KR101559533B1 (en) | Mobile Apparatus And Method For Locating Earth Leaking Point | |
| Cella et al. | Measurement of AT electric railway system currents at power-supply frequency and validation of a multiconductor transmission-line model | |
| CN103430017A (en) | Fault detection for laminated core | |
| CN100441460C (en) | Method and apparatus for testing rail break | |
| US20230084963A1 (en) | Device, system and method for detecting leakage current for traction power system | |
| CN101216524A (en) | 1000KV alternating-current ultrahigh voltage transmission lines earth fault positioning technology and apparatus | |
| CN107290629A (en) | A kind of 10KV low-voltage networks Earth design method | |
| CN106124950A (en) | High voltage electric transmission cable on-line measuring device | |
| CN100461229C (en) | Method for detecting induction coil velocimeter | |
| CN206644676U (en) | Electric locomotive traction current sensing means | |
| CN103424627A (en) | Method for measuring zero-sequence impedance of parallel distribution network circuit at double ends | |
| RU109723U1 (en) | DEVICE FOR MONITORING THE CONDITION OF INSULATING JOINTS IN RAIL CHAINS IN SECTIONS WITH AC ELECTRIC SHOCK | |
| CN110174593B (en) | Device and method for judging breakpoint position of grounding grid by adopting electromagnetic induction | |
| CN110687401A (en) | Fault detection system and method for overhead contact system on railway | |
| CN103424628A (en) | Method for measuring parallel grid line positive sequence impedance | |
| CN202502136U (en) | Measuring device for induced voltage and induced current of AC line | |
| CN205539154U (en) | High voltage electrified display locking apparatus | |
| CN109782071B (en) | Pole tower grounding resistance measurement method based on earth surface voltage | |
| CN212570694U (en) | Rail homodromous current difference transformer | |
| CN103754240B (en) | A kind of method for detecting position and position sensor | |
| CN208140776U (en) | Track current separator and track current test macro | |
| CN111834113A (en) | Rail homodromous current difference transformer | |
| CN202372565U (en) | Outdoor current real time monitoring device for railway links |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510360 No. 67, North Shijie street, Liwan District, Guangzhou, Guangdong. Patentee after: Guangzhou railway department open Manufacturing Co., Ltd. Address before: 510360 No. 67, North Shijie street, Liwan District, Guangzhou, Guangdong. Patentee before: Guangzhou Railway (Group) Company Electric Factory |
|
| CP01 | Change in the name or title of a patent holder |