CN2195099Y - Cable core break tester - Google Patents
Cable core break tester Download PDFInfo
- Publication number
- CN2195099Y CN2195099Y CN 94228600 CN94228600U CN2195099Y CN 2195099 Y CN2195099 Y CN 2195099Y CN 94228600 CN94228600 CN 94228600 CN 94228600 U CN94228600 U CN 94228600U CN 2195099 Y CN2195099 Y CN 2195099Y
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- CN
- China
- Prior art keywords
- capacitor
- cable
- signal
- wave
- resistor
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to a cable core break tester. A signal sending part A is a self-excited multi-harmonic oscillator composed of triodes BG1 and BG2, capacitors and a resistor, a collector of the BG1 outputs a rectangular wave, and the rectangular wave is changed to a peaking pulse to be output after the rectangular wave is differentiated by the capacitor C3 and the resistor R3. A signal receiving part B is a third-stage amplifier composed of a triode and some resistor-capacitor elements, wherein, output signals are coupled at an input terminal of the third-stage amplifier by a test ring C and a capacitor C7, a positive half wave is chipped off by a diode D2 after the signals are amplified, a negative half wave is rectified by a diode D1, and the reading is displayed by an ammeter. Thus, the problem of the difficult cable core break testing is solved. The utility model has the advantages of small size, light weight, easy manufacture, easy operation, etc.
Description
The utility model relates to the disconnected core detecting instrument of a kind of cable, and particularly a kind of disconnected core of roving polycore cable that is applicable to detects.
The electric tool that uses in industrial and mining enterprises at present is a lot, and used power lead is the rubber cable of three cores or four-core mostly, because operating environment is complicated and changeable, cable is often pounded, dragged and causes the phenomenon of inner disconnected core to happen occasionally.Be difficult to find out the trouble spot behind the disconnected core of cable, general detection method is that the suspection place is disconnected, and if not the trouble spot, tests to both sides respectively with the multimeter ohms range, after finding out the disconnected core in which limit, the suspection place is disconnected, the rest may be inferred dwindles fault coverage again, and this method was both time-consuming, require great effort again, also can make cable the many places joint occur, the insulating property of cable itself are destroyed, bring unfavorable factor to safety in production.In addition, the joint of cable can increase along with the number of times of the disconnected core of cable and increase, and when serious cable is scrapped, and has shortened the serviceable life of cable greatly.
The purpose of this utility model provides the disconnected core detector of a kind of cable, and it not only can measure the break-make of cable, but also can accurately, promptly detect the position of breakpoint.
The purpose of this utility model is achieved in that the disconnected core detector of this cable divides A and signal receive section B to form by signal transmission unit, and wherein to divide A be by triode BG to signal transmission unit
1, BG
2, capacitor C
1, C
2And resistance R
01, R
02, R
B1, R
B2The free-running multivibrator of forming is by triode BG
1Square wave of collector output is again through capacitor C
3And resistance R
3Become spike output behind the differential; Signal receive section B is by triode BG
3, BG
4, BG
5And the third stage amplifier formed of some Resistor-Capacitor Units, output signal is by test wrapper, capacitor C
7Be coupled to three utmost point amplifier input terminal, after signal was exaggerated, positive half-wave was by diode D
2Ream, negative half-wave is through diode D
1Demonstrate reading by reometer after the rectification.
It is little to the utlity model has volume, in light weight, simple to operate, advantages such as easy making, it can not only measure the break-make of lead, and can also be under the situation of cable sheath without any damage, accurately, promptly find the position of breakpoint, make the joint of cable be controlled at bottom line, prolonged the serviceable life of cable, improved the security of electricity consumption.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is circuit theory diagrams of the present utility model.
As shown in Figure 1, triode BG
1～BG
5Select 3AX31A for use, diode D
1, D
2Select 2CP10 for use, resistance R
B1, R
B2Select 30k Ω for use, R
B3～R
B5Select 130k Ω for use, R
01, R
02Select 2k Ω for use, R
03～R
05Select 1.2k Ω for use, R
3Select 5k Ω for use, capacitor C
1, C
2Select 2000pF for use, C
3Select 0.01 μ F for use, C
4, C
5, C
6Select 0.047 μ F for use, C
7Select 200pF for use, C
8Select 0.2 μ F for use, power supply is selected the direct supply of 4.5V for use, and reometer is selected 500 μ A, resistance R for use
#Test and Selection as the case may be.
The utlity model has two kinds of functions: the one, which root heart yearn of measuring cable has broken, and elder generation is with power switch K during use
1Pull to " 1 " position, again with function switch K
2Pull the reometer and power supply, test pencil, adjustable resistance Rw, the resistance R that make 500 μ A to " 1 " position and form series loop, can carry out on off test heart yearn.The 2nd, search the breakpoint position, elder generation is with power switch K during use
1Pull to " 1 " position, again with function switch K
2Pull to " 2 " position, that lead of measuring disconnected core is received the output wiring terminal Y that signal transmission unit divides A
1On, remaining lead is received the earth terminal Y of signal output
2On, the test wrapper C with signal input is enclosed within on the cable then, and at this moment the pointer of reometer has bigger reading, drops cable then, and cable is walked about in test wrapper C, as the pointer of going to breakpoint place reometer returns zero, illustrates that then this place promptly is the breakpoint position.
The disconnected core detector of cable of the present utility model is applicable to any cable of not being with screen layer, and for setting up or long electric wiring also can be divided into it two parts, i.e. radiating portion and receiving unit can improve the dirigibility of use like this.
Claims (1)
1, the disconnected core detector of a kind of cable is characterized in that dividing A and signal receive section B to form by signal transmission unit, and wherein to divide A be by triode BG to signal transmission unit
1, BG
2, capacitor C
1, C
2And resistance R
A1, R
A2, R
B1, R
B2The free-running multivibrator of forming is by triode BG
1Square wave of collector output is again through capacitor C
3And resistance R
3Become spike output behind the differential; Signal receive section B is by triode BG
3, BG
4, BG
6And the third stage amplifier of some Resistor-Capacitor Units compositions, output signal is by test wrapper C, capacitor C
7Be coupled to three utmost point amplifier input terminal, after signal was exaggerated, positive half-wave was by diode D
2Ream, negative half-wave is through diode D
1Demonstrate reading by reometer after the rectification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94228600 CN2195099Y (en) | 1994-05-11 | 1994-05-11 | Cable core break tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94228600 CN2195099Y (en) | 1994-05-11 | 1994-05-11 | Cable core break tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2195099Y true CN2195099Y (en) | 1995-04-19 |
Family
ID=33841110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94228600 Revoked CN2195099Y (en) | 1994-05-11 | 1994-05-11 | Cable core break tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2195099Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109270391A (en) * | 2018-09-28 | 2019-01-25 | 江西圣塔电缆科技有限公司 | A kind of fire electricity line detection device |
| CN109839604A (en) * | 2017-11-28 | 2019-06-04 | 小丝电工株式会社 | Disconnected core detection circuit and power supply device |
-
1994
- 1994-05-11 CN CN 94228600 patent/CN2195099Y/en not_active Revoked
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839604A (en) * | 2017-11-28 | 2019-06-04 | 小丝电工株式会社 | Disconnected core detection circuit and power supply device |
| CN109270391A (en) * | 2018-09-28 | 2019-01-25 | 江西圣塔电缆科技有限公司 | A kind of fire electricity line detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C28 | Revocation of patent right or utility model | ||
| RW01 | Full revocation of patent right |