CN106154312A - Not clear line alignment tester - Google Patents
Not clear line alignment tester Download PDFInfo
- Publication number
- CN106154312A CN106154312A CN201610735527.8A CN201610735527A CN106154312A CN 106154312 A CN106154312 A CN 106154312A CN 201610735527 A CN201610735527 A CN 201610735527A CN 106154312 A CN106154312 A CN 106154312A
- Authority
- CN
- China
- Prior art keywords
- feet
- electric capacity
- connect
- ground connection
- transformator
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
Abstract
The invention discloses a kind of not clear line alignment tester, relate to line maintenance equipment technical field；Including signal projector, signal receiver, probe and earphone；Signal projector is connected with circuit to be inquired about；Signal receiver is by connection on probe, and earphone is connected with signal receiver；Probe includes the body of rod and is arranged on the detector of rod end, and detector is externally provided with containment vessel；Simple in construction, easy to use, can accurately detect cable position, and the distance on cable distance ground can be measured, simple and quick.
Description
Technical field
The present invention relates to line maintenance equipment technical field.
Background technology
Along with electric company enters ground, rural area agriculture deploying change transformation to city forceful electric power, underground cable quantity gets more and more.Nian Shen
With the passing of time it is easy to can not find the particular location of underground cable, excacation afterwards is easy to hurt underground line, or electricity wound
People.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, it is provided that a kind of not clear line alignment is surveyed
Examination instrument, simple in construction, carry easy to use, can accurately detect cable position, and the distance on cable distance ground can be measured, increase
Probe service life, simple and quick.
For solving above-mentioned technical problem, the technical solution used in the present invention is: include signal projector, signal receiver
And probe；Signal projector is connected with circuit to be inquired about；Signal receiver passes through connection on probe；Described probe includes
The telescopic body of rod and the detector being arranged on rod end, detector is externally provided with containment vessel.
As preferably, signal projector includes Music Clip A, music signal amplifier TEA2025, transformator T1, voltage
Table V 1 and power supply VCC1；
TEA2025's: 1 foot connects electric capacity C1 positive pole, 2.2 feet of electric capacity C1 and Music Clip A are connected；2 feet and electric capacity C2 positive pole phase
Even, electric capacity C2 minus earth；3 feet are directly grounded；4 feet connect the negative pole of electric capacity C3；5 feet connect the positive pole of electric capacity C3；6 feet meet electric capacity C4
Positive pole, the minus earth of electric capacity C4；7 feet connect the positive pole of electric capacity C5, and electric capacity C5 negative pole connects electric capacity C7 positive pole, and electric capacity C7 negative pole connects
Ground；8 feet connect electric capacity and send out C5 negative pole；9 feet connect the negative pole of electric capacity C6；10 feet connect the positive pole of electric capacity C6, the negative pole of electric capacity C6 and electric capacity
The positive pole of C8 is connected, the minus earth of electric capacity C8；11 feet, 12 feet, 13 feet, 14 feet, 15 feet all ground connection；16 feet connect on and off switch
S1, on and off switch S1 and power supply VCC1It is connected；
Music Clip A:1.1 foot is connected with on and off switch S1；2.2 feet are connected with electric capacity C1 negative pole；Connect between 2.2 feet and 3.3 feet
It is connected to the resistance R1 of 10K Ω；3.3 feet and 4.4 foot ground connection；
The former limit of transformator T1 is connected respectively at the negative pole of electric capacity C5 with electric capacity C6, the secondary of transformator T1 connect earth lead plug and
The terminals P1 of fault wire plug；The secondary of transformator T1 is further connected with A.C. voltmeter V1；
The secondary outfan of voltmeter V1 and transformator T1 is connected.
As preferably, power supply VCC1For 6V accumulator.
As preferably, transformator T1 is that 6V becomes 220V transformator.
As preferably, signal receiver includes audio-frequency power amplifier LM386, the terminals P2 connecting probe plug and loudspeaker
Q1；
Audio-frequency power amplifier LM386:1 foot is connected with terminals P2, and 1 foot ground connection；2 feet are connected with terminals P2, switch
S2 one end is connected with terminals P2, switchs S2 other end ground connection；3 feet and 4 feet all ground connection；5 feet are connected with electric capacity C9 one end, electric capacity
C9 other end ground connection；6 feet meet power supply VCC2；
Loudspeaker Q1 one end ground connection, the loudspeaker Q1 other end is connected with 5 feet of audio-frequency power amplifier LM386.
As preferably, power supply VCC2For 1.5V accumulator.
As preferably, signal receiver can connect earphone.
As preferably, containment vessel includes that groove lid and corresponding lower groove lid, upper groove lid connect with lower groove lid one end axle；Upper groove
Covering one end corresponding with pivoted connection end and be provided with two draw-in grooves, lower groove lid is provided with the buckle corresponding with draw-in groove；Upper groove lid and lower groove
It is covered with draw-in groove and card end of thread centre position is provided with the groove matched with the body of rod, and groove is arranged in the middle of two draw-in grooves, bar
Body is placed in a groove.
As preferably, the telescopic body of rod includes outer bar and the interior bar being sleeved in outer bar, and it is protruding that interior bar is provided with spring,
Outer bar is provided with corresponding some location hole protruding with spring.
Use and have the beneficial effects that produced by technique scheme: present configuration is simple, easy to use, passes through probe
Mobile and send the size of musical sound and judge cable louding and the distance on cable distance ground, simple and quick, power supply uses storage
Battery, the telescopic body of rod, easy to carry, safe and reliable, containment vessel set increase probe service life.
Accompanying drawing explanation
Fig. 1 is that the present invention uses view；
Fig. 2 is the circuit diagram of signal projector in Fig. 1；
Fig. 3 is the circuit diagram of signal receiver in Fig. 1；
Fig. 4 is the structural representation of the body of rod in Fig. 1；
Fig. 5 is the structural representation of containment vessel in Fig. 1.
In figure: 1, probe；2, signal receiver；3, signal projector；4, earphone；5, ground；6, circuit to be inquired about；1.1、
The body of rod；1.2, detector；1.3, containment vessel；1.1.1, outer bar；1.1.2, interior bar；1.1.3, spring protruding；1.1.4, location hole；
1.3.1, upper groove lid；1.3.2, lower groove lid；1.3.3, draw-in groove；1.3.4, buckle；1.3.5, groove.
Detailed description of the invention
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
As it is shown in figure 1, be an embodiment of a kind of not clear line alignment tester of the present invention, including signal projector 3,
2, probe 1 of signal receiver and earphone 4；Signal projector 3 is connected with circuit 6 to be inquired about；Signal receiver 2 passes through circuit
It is connected on probe 1；Probe 1 includes the telescopic body of rod 1.1 and is arranged on the detector 1.2 of the body of rod 1.1 end, detector
1.2 are externally provided with containment vessel 1.3, and detector 1.2 is connected by electric wire with signal receiver 2.
Detector 1.2 is the enameled wire loop of 2000 circles, plays the effect of antenna.
The ground terminal ground connection of signal projector 3, phase line end is connected with circuit 6 to be inquired about, and closes circuit 6 to be inquired about during use
Switch, connect signal projector 3 switch, signal projector 3 display lamp lights, signal projector 3 transfer signals to want
On inquiry circuit 6；Signal receiver 2 is connected with probe 1, and the detector 1.2 on probe 1 is transmitted into for detection transmitter 3 and wants
Signal on inquiry circuit 6, carrys out the trend of measurement line, signal receiver 2 connects by detecting the signal on circuit 6 to be inquired about
Lug machine 4, earphone 4 can listen the signal that signal receiver 2 transmits；The position i.e. position of circuit that probe 1 music is maximum,
It is the ground 5 distance to test line from the distance of the position that music maximum position equalizes to a side shifting to music.Detector
1.2 be annular, arranging containment vessel 1.3 outside detector 1.2 is to protect detector 1.2, prevent detector 1.2 life-time service or
By extraneous damage effect using effect.
Utilize this device, simple in construction, easy to use, can accurately detect cable position by the size of probe music,
And the distance on cable distance ground 5 can be measured, and simple and quick, improve work efficiency.
As in figure 2 it is shown, signal projector 3 includes Music Clip A, music signal amplifier TEA2025, transformator T1, electricity
Pressure Table V 1 and power supply VCC1；
TEA2025's: 1 foot connects electric capacity C1 positive pole, 2.2 feet of electric capacity C1 and Music Clip A are connected；2 feet and electric capacity C2 positive pole phase
Even, electric capacity C2 minus earth；3 feet are directly grounded；4 feet connect the negative pole of electric capacity C3；5 feet connect the positive pole of electric capacity C3；6 feet meet electric capacity C4
Positive pole, the minus earth of electric capacity C4；7 feet connect the positive pole of electric capacity C5, and electric capacity C5 negative pole connects electric capacity C7 positive pole, and electric capacity C7 negative pole connects
Ground；8 feet connect electric capacity and send out C5 negative pole；9 feet connect the negative pole of electric capacity C6；10 feet connect the positive pole of electric capacity C6, the negative pole of electric capacity C6 and electric capacity
The positive pole of C8 is connected, the minus earth of electric capacity C8；11 feet, 12 feet, 13 feet, 14 feet, 15 feet all ground connection；16 feet connect on and off switch
S1, on and off switch S1 and power supply VCC1It is connected；
Music Clip A:1.1 foot is connected with on and off switch S1；2.2 feet are connected with electric capacity C1 negative pole；Connect between 2.2 feet and 3.3 feet
It is connected to the resistance R1 of 10K Ω；3.3 feet and 4.4 foot ground connection；
The former limit of transformator T1 is connected respectively at the negative pole of electric capacity C5 with electric capacity C6, the secondary of transformator T1 connect earth lead plug and
The terminals P1 of fault wire plug；
The secondary of transformator T1 is further connected with A.C. voltmeter V1；Electric capacity C1 is 22 μ F, and electric capacity C2 and C3 is 100 μ F.
The signal that Music Clip A in signal projector 3 sends through music signal amplifier TEA2025 by music signal
Amplify, and then be transferred to transformator T1, after being brought the voltage up by transformator T1, be transferred to terminals P1；Terminals P1 is provided with and connects
Ground wire and the plug of circuit to be inquired about, convenient circuit to be inquired about is connected with signal projector.
Power supply VCC1For 6V accumulator, carry easy to use.
Transformator T1 is that 6V becomes 220V transformator, and voltage can be increased by transformator T1.
As it is shown on figure 3, signal receiver 2 include audio-frequency power amplifier LM386, connect probe plug terminals P2 and
Loudspeaker Q1；
Audio-frequency power amplifier LM386:1 foot is connected with terminals P2, and 1 foot ground connection；2 feet are connected with terminals P2, switch
S2 one end is connected with terminals P2, switchs S2 other end ground connection；3 feet and 4 feet all ground connection；5 feet are connected with electric capacity C9 one end, electric capacity
C9 other end ground connection；6 feet meet power supply VCC2；
Loudspeaker Q1 one end ground connection, the loudspeaker Q1 other end is connected with 5 feet of audio-frequency power amplifier LM386.
The signal that terminals P2 reception probe 1 in signal receiver 2 transmits is through audio-frequency power amplifier LM386
Signal is amplified, is then passed through electric capacity C9 and high frequency ac signal is filtered out, only accept low frequency signal, finally transmit a signal to
Loudspeaker Q1；Terminals P2 is provided with the plug connecting probe 1, is conveniently connected with probe 1.
Power supply VCC2For 1.5V accumulator, accumulator is easy to carry.
Can connect earphone 4 on signal receiver 3, earphone 4 can make to listen to become apparent from, it is judged that more accurate.
As described in Figure 5, containment vessel 1.3 include groove lid 1.3.1 and corresponding lower groove lid 1.3.2, upper groove lid 1.3.1 with
Lower groove lid 1.3.2 one end axle connects；Upper groove lid 1.3.1 one end corresponding with pivoted connection end is provided with two draw-in groove 1.3.3, lower groove lid
1.3.2 the buckle 1.3.4 corresponding with draw-in groove 1.3.3 it is provided with；Upper groove lid 1.3.1 and lower groove lid 1.3.2 is provided with draw-in groove 1.3.3
It is provided with, with buckle 1.3.4 end centre position, the groove 1.3.5 matched with the body of rod, and groove 1.3.5 is arranged on two draw-in grooves
1.3.3, in the middle of, the body of rod 1.1 is placed in groove 1.3.5；During use, detector 1.2 is placed in containment vessel 1.3, probe 1
The body of rod 1.1 is placed in groove 1.3.5, buckles buckle 1.3.4 and can be closed by upper groove lid 1.3.1 and lower groove lid 1.3.2, can beat
The upper groove lid 1.3.1 and the lower groove lid 1.3.2 that open are easy to use, and when detector 1.2 goes wrong, convenient maintenance, works as protection simultaneously
Containment vessel 1.3 it is convenient for changing when shell 1.3 is because of service failure, simple and convenient, improve efficiency.
As shown in Figure 4, the telescopic body of rod 1.1 includes outer bar 1.1.1 and the interior bar 1.1.2 being sleeved in outer bar 1.1.1,
Interior bar 1.1.2 is provided with spring projection 1.1.3, and outer bar 1.1.1 is provided with the some location hole corresponding with spring projection 1.1.3
1.1.4, the convenient length regulating the body of rod 1.1 of the telescopic body of rod 1.1, easy to use, the most easy to carry, area occupied is little.
Use process:
Circuit power-off will be inquired about during use, by the ground terminal ground connection of signal projector, phase wire end circuit to be inquired about, open letter
The switch of number emitter, display lamp lights, opening signal receptor switchs, and hand-held probe moves left and right, and probe music is maximum
The position i.e. position of circuit, is that ground is to inquire about from the maximum position of music to a side shifting to the distance of music relative equilibrium
The distance of circuit.
After using technique scheme, simple in construction, easy to use, moved by probe and send the size of musical sound
Judging cable louding and the distance on cable distance ground, simple and quick, power supply uses accumulator, easy to carry, safe and reliable；Protect
Protective case the service life that can increase probe is set.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (9)
1. a not clear line alignment tester, it is characterised in that: include signal projector (3), signal receiver (2) and probe
(1)；Described signal projector (3) is connected with circuit to be inquired about (6)；Signal receiver (2) passes through connection in probe (1)
On；Described probe (1) includes the telescopic body of rod (1.1) and is arranged on the detector (1.2) of the body of rod (1.1) end, detector
(1.2) containment vessel (1.3) it is externally provided with.
Not clear line alignment tester the most according to claim 1, it is characterised in that described signal projector (3) includes sound
Happy chip A, music signal amplifier TEA2025, transformator T1, voltmeter V1 and power supply VCC1；
Described TEA2025's: 1 foot connects electric capacity C1 positive pole, 2.2 feet of electric capacity C1 and Music Clip A are connected；2 feet are with electric capacity C2 just
The most connected, electric capacity C2 minus earth；3 feet are directly grounded；4 feet connect the negative pole of electric capacity C3；5 feet connect the positive pole of electric capacity C3；6 feet connect electricity
Hold the positive pole of C4, the minus earth of electric capacity C4；7 feet connect the positive pole of electric capacity C5, and electric capacity C5 negative pole connects electric capacity C7 positive pole, and electric capacity C7 bears
Pole ground connection；8 feet connect electric capacity and send out C5 negative pole；9 feet connect the negative pole of electric capacity C6；10 feet connect the positive pole of electric capacity C6, the negative pole of electric capacity C6 with
The positive pole of electric capacity C8 is connected, the minus earth of electric capacity C8；11 feet, 12 feet, 13 feet, 14 feet, 15 feet all ground connection；16 feet connect power supply and open
Close S1, on and off switch S1 and power supply VCC1It is connected；
Described Music Clip A:1.1 foot is connected with on and off switch S1；2.2 feet are connected with electric capacity C1 negative pole；2.2 feet and 3.3 feet it
Between connect and have the resistance R1 of 10K Ω；3.3 feet and 4.4 foot ground connection；
The former limit of described transformator T1 is connected respectively at the negative pole of electric capacity C5 with electric capacity C6, and the secondary of transformator T1 connects earth lead and inserts
Head and the terminals P1 of fault wire plug；The secondary of transformator T1 is further connected with A.C. voltmeter V1；
The secondary outfan of described voltmeter V1 and transformator T1 is connected.
Not clear line alignment tester the most according to claim 2, it is characterised in that described power supply VCC1For 6V accumulator.
Not clear line alignment tester the most according to claim 2, it is characterised in that described transformator T1 is that 6V becomes 220V
Transformator.
Not clear line alignment tester the most according to claim 1, it is characterised in that described signal receiver (2) includes sound
Frequently power amplifier LM386, the terminals P2 and loudspeaker Q1 of connection probe plug；
Described audio-frequency power amplifier LM386:1 foot is connected with terminals P2, and 1 foot ground connection；2 feet are connected with terminals P2,
Switch S2 one end is connected with terminals P2, switchs S2 other end ground connection；3 feet and 4 feet all ground connection；5 feet are connected with electric capacity C9 one end,
Electric capacity C9 other end ground connection；6 feet meet power supply VCC2；
Described loudspeaker Q1 one end ground connection, the loudspeaker Q1 other end is connected with 5 feet of audio-frequency power amplifier LM386.
Not clear line alignment tester the most according to claim 5, it is characterised in that described power supply VCC2For 1.5V electric power storage
Pond.
Not clear line alignment tester the most according to claim 1, it is characterised in that described signal receiver (2) is upper permissible
Connect earphone (4).
Not clear line alignment tester the most according to claim 1, it is characterised in that described containment vessel (1.3) includes groove
Lid (1.3.1) and corresponding lower groove lid (1.3.2), upper groove lid (1.3.1) connects with lower groove lid (1.3.2) one end axle；Upper groove lid
(1.3.1) one end corresponding with pivoted connection end is provided with two draw-in grooves (1.3.3), and lower groove lid (1.3.2) is provided with and draw-in groove (1.3.3)
Corresponding buckle (1.3.4)；Upper groove lid (1.3.1) and lower groove lid (1.3.2) are provided with draw-in groove (1.3.3) and buckle (1.3.4)
End centre position is provided with the groove (1.3.5) matched with the body of rod (1.1), and groove (1.3.5) is arranged on two draw-in grooves
(1.3.3), in the middle of, the body of rod (1.1) is placed in groove (1.3.5).
Not clear line alignment tester the most according to claim 1, it is characterised in that the described telescopic body of rod (1.1) is wrapped
Including outer bar (1.1.1) and the interior bar (1.1.2) being sleeved in outer bar (1.1.1), it is protruding that interior bar (1.1.2) is provided with spring
(1.1.3), outer bar (1.1.1) is provided with the some location hole (1.1.4) corresponding with spring protruding (1.1.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610735527.8A CN106154312A (en) | 2016-08-26 | 2016-08-26 | Not clear line alignment tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610735527.8A CN106154312A (en) | 2016-08-26 | 2016-08-26 | Not clear line alignment tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106154312A true CN106154312A (en) | 2016-11-23 |
Family
ID=57343161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610735527.8A Pending CN106154312A (en) | 2016-08-26 | 2016-08-26 | Not clear line alignment tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106154312A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395115A (en) * | 2002-06-20 | 2003-02-05 | 钟伟章 | Hidden line detection instrument |
| CN2896306Y (en) * | 2006-04-28 | 2007-05-02 | 重庆东电通信技术有限公司 | Communication cable circuit detection device |
| CN201149611Y (en) * | 2008-01-18 | 2008-11-12 | 范明磊 | Instrument for detecting five series and ultra-five series cable |
| CN201429706Y (en) * | 2009-03-09 | 2010-03-24 | 中国石化集团胜利石油管理局电力管理总公司 | Cable tracer |
| CN101881799A (en) * | 2010-06-23 | 2010-11-10 | 河南送变电建设公司 | Grounding net distribution detector |
| CN202486327U (en) * | 2012-02-23 | 2012-10-10 | 江苏三通仪器系统有限公司 | Cable path detecting instrument |
| CN202548271U (en) * | 2012-03-07 | 2012-11-21 | 邯郸供电公司 | Cable fault finder |
| CN203811748U (en) * | 2014-03-21 | 2014-09-03 | 齐巧珍 | Buried fault line direction and fault point positioner |
| CN204188817U (en) * | 2014-11-18 | 2015-03-04 | 国家电网公司 | A kind of telescopic power lead detector |
| CN204215053U (en) * | 2014-12-03 | 2015-03-18 | 仲连俊 | A kind of pre-embedded pipe detector |
| CN206301050U (en) * | 2016-08-26 | 2017-07-04 | 国家电网公司 | Not clear line alignment tester |
-
2016
- 2016-08-26 CN CN201610735527.8A patent/CN106154312A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395115A (en) * | 2002-06-20 | 2003-02-05 | 钟伟章 | Hidden line detection instrument |
| CN2896306Y (en) * | 2006-04-28 | 2007-05-02 | 重庆东电通信技术有限公司 | Communication cable circuit detection device |
| CN201149611Y (en) * | 2008-01-18 | 2008-11-12 | 范明磊 | Instrument for detecting five series and ultra-five series cable |
| CN201429706Y (en) * | 2009-03-09 | 2010-03-24 | 中国石化集团胜利石油管理局电力管理总公司 | Cable tracer |
| CN101881799A (en) * | 2010-06-23 | 2010-11-10 | 河南送变电建设公司 | Grounding net distribution detector |
| CN202486327U (en) * | 2012-02-23 | 2012-10-10 | 江苏三通仪器系统有限公司 | Cable path detecting instrument |
| CN202548271U (en) * | 2012-03-07 | 2012-11-21 | 邯郸供电公司 | Cable fault finder |
| CN203811748U (en) * | 2014-03-21 | 2014-09-03 | 齐巧珍 | Buried fault line direction and fault point positioner |
| CN204188817U (en) * | 2014-11-18 | 2015-03-04 | 国家电网公司 | A kind of telescopic power lead detector |
| CN204215053U (en) * | 2014-12-03 | 2015-03-18 | 仲连俊 | A kind of pre-embedded pipe detector |
| CN206301050U (en) * | 2016-08-26 | 2017-07-04 | 国家电网公司 | Not clear line alignment tester |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201974217U (en) | Portable ground water level detection equipment | |
| CN206096328U (en) | Portable electric contact circuit break -make detector | |
| CN207149817U (en) | Coiling apparatus | |
| CN201429706Y (en) | Cable tracer | |
| CN206209042U (en) | Instrument for testing polarity of current transformer | |
| CN208969194U (en) | Novel bunk is pressed with source integral type fault locating instrument | |
| CN206208974U (en) | A kind of current measuring device | |
| CN205545826U (en) | Automatic detachable bluetooth controlling means who charges | |
| CN206301050U (en) | Not clear line alignment tester | |
| CN208568958U (en) | A kind of temperature of electric transmission line detection system | |
| CN201637806U (en) | Cable breaking point detector | |
| CN106154312A (en) | Not clear line alignment tester | |
| CN107422280A (en) | A kind of Portable LED lamp detector | |
| CN205981495U (en) | Quick detection device of thermocouple | |
| CN108519539A (en) | A kind of remote electric wiring on-off detector | |
| CN201955461U (en) | Wireless current transformer ratio gauge | |
| CN201716387U (en) | Fault detection instrument for mine power cable | |
| CN213813666U (en) | Insulating pad with reminding function | |
| CN202748448U (en) | Detection device of circuit loop | |
| CN205829654U (en) | Power equipment communication test instrument | |
| CN205562456U (en) | Spirit tester | |
| CN105572536B (en) | 485 bus communication network short circuit trouble points are without electrification survey meter of taking out stitches | |
| CN108333467A (en) | A kind of SCM Based substation's mutual inductor polarity intelligent detection device | |
| CN211014593U (en) | Phase-splitting low-voltage grounding fault detection device | |
| CN209525413U (en) | A kind of portable detector for distribution network failure positioning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161123 |