CN201107380Y - Cable short circuit, broken circuit tester - Google Patents
Cable short circuit, broken circuit tester Download PDFInfo
- Publication number
- CN201107380Y CN201107380Y CNU2007200160311U CN200720016031U CN201107380Y CN 201107380 Y CN201107380 Y CN 201107380Y CN U2007200160311 U CNU2007200160311 U CN U2007200160311U CN 200720016031 U CN200720016031 U CN 200720016031U CN 201107380 Y CN201107380 Y CN 201107380Y
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- CN
- China
- Prior art keywords
- circuit
- instrument
- tester
- antenna
- potentiometer
- 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.)
- Expired - Fee Related
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
A cable short-circuit and open circuit test instrument relates to a cable short-circuit and open circuit tester, and is mainly designed to solve the problems that in short-circuit and open circuit testing of prior cables, the capacitance method and the bridge method are adopted, known conditions are needed to calculate, so errors exist, the operation is very difficult, etc. The utility model includes a frame; the frame is provided with an antenna receiving board, a short-circuit and turn-off transfer switch, a test instrument and a switch potentiometer, wherein, the antenna receiving board includes a field effect antenna receive and a transistor amplifier; the power supply is provided with a guide wire which is connected with the antenna receiver, the amplifier and the instrument; a power switch controls the power supply of the complete tester; the potentiometer of the switch potentiometer is connected with the instrument. The tester has the advantages of large measurement scope from 10cm to thousands of meters, non-destructive measurement, easiness in operation and accurate positioning.
Description
Technical field:
The utility model relates to a kind of cable short circuit, out of circuit test device.
Background technology:
Test cable short circuit at present, main capacitance method, the bridge method of adopting that open circuit, the shortcoming of these two kinds of methods is to need known conditions, calculates, and has error, operation easier is big.
Summary of the invention:
The technical problems to be solved in the utility model provides a kind of cable short circuit that can solve the problems of the technologies described above, out of circuit test instrument.
Above-mentioned purpose is achieved in that it comprises casing, and the antenna dash receiver is housed on the casing, and short, disconnected switch also has tester instrument and potentiometer with switch; Antenna dash receiver wherein comprises field effect antenna receiver and transistor amplifier, and power supply has lead to be connected with antenna receiver, amplifier and instrument, and by power switch control complete machine power supply, the potentiometer in the potentiometer with switch is connected with instrument.
Test philosophy: the test failure cable, connect and draw signal source, penetrate crust along self radiated electric field, the trouble spot is the boundary, and signal is from switching to nothing, and tester is lain in wait for electric field state of living in, the trouble-shooting point is converted to seeks the electric field separation.
The electricity principle: divide two parts, one, signal source, adopt the 50HZ alternating current; Two, tester, the task of tester are that the electric field signal that can't see is converted into optical signal.Electric field is received by the tester antenna along wire radiation, and the field effect antenna is received signal, by weak point, disconnected corresponding abort situation, and the signalization path, both are the unified amplifier that enters without distortion after overmatching, improves the spoke degree, and output is supplied with instrument and is shown.Switch control power supply, the potentiometer control instrument.
The utility model has the advantages that: measurement range is big, and from 10 centimetres to thousands of meters, non-destruction is measured, and is simple to operate, and fixed point is accurately tested factually, and one 600 meters long, 50mm
2The Plastic-sheathed Cable short circuit was only finished test with 25 minutes, and is very accurate.
Description of drawings:
Fig. 1 is a structural representation of the present utility model; Fig. 2 is a circuit block diagram of the present utility model; Fig. 3 is the out of circuit test synoptic diagram; Fig. 4-the 1st, short-circuit line and line mix synoptic diagram; Fig. 4-the 2nd, line and metal sheath mix synoptic diagram.
Embodiment:
With reference to Fig. 1,2, it comprises casing 1, and antenna dash receiver 2 is housed on the casing, and short, disconnected switch 3 also has tester instrument 4 and potentiometer with switch 5; Antenna dash receiver wherein comprises field effect antenna receiver and transistor amplifier (all can buy from market), power supply has lead to be connected with antenna receiver, amplifier and instrument, by power switch control complete machine power supply, the potentiometer in the potentiometer with switch is connected with instrument.
Using method:
One, out of circuit test, with reference to Fig. 3, bulb 7 on the string, are to prevent from back and forth to help secretly in the operation, and live wire 8 is gone into ground, and other end ground connection is to eliminate proximity effect, transmits signal along other leads, no signal beyond the break point.6 represent the utility model cable short circuit, out of circuit test instrument among the figure, and arrow is represented tracking direction (down together).
Two, short-circuit test, line and line mix, and short circuit is connected into the AB loop, no signal (with reference to Fig. 4-1) beyond the short dot; Line and metal sheath mix, and short circuit is connected into the AB loop, no signal (with reference to Fig. 4-2) beyond the short dot.
Claims (1)
1. cable short circuit, out of circuit test instrument comprise casing (1), and antenna dash receiver (2) is housed on the casing, and short, disconnected switch (3) also has tester instrument (4) and potentiometer with switch (5); It is characterized in that antenna dash receiver wherein comprises field effect antenna receiver and transistor amplifier, power supply has lead to be connected with antenna receiver, amplifier and instrument, and by power switch control complete machine power supply, the potentiometer in the potentiometer with switch is connected with instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200160311U CN201107380Y (en) | 2007-11-22 | 2007-11-22 | Cable short circuit, broken circuit tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200160311U CN201107380Y (en) | 2007-11-22 | 2007-11-22 | Cable short circuit, broken circuit tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201107380Y true CN201107380Y (en) | 2008-08-27 |
Family
ID=39959189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200160311U Expired - Fee Related CN201107380Y (en) | 2007-11-22 | 2007-11-22 | Cable short circuit, broken circuit tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201107380Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965146A (en) * | 2015-06-15 | 2015-10-07 | 王志 | Short circuit detector |
-
2007
- 2007-11-22 CN CNU2007200160311U patent/CN201107380Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965146A (en) * | 2015-06-15 | 2015-10-07 | 王志 | Short circuit detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |