CN2266135Y - Low voltage leakage tester - Google Patents
Low voltage leakage tester Download PDFInfo
- Publication number
- CN2266135Y CN2266135Y CN 96204678 CN96204678U CN2266135Y CN 2266135 Y CN2266135 Y CN 2266135Y CN 96204678 CN96204678 CN 96204678 CN 96204678 U CN96204678 U CN 96204678U CN 2266135 Y CN2266135 Y CN 2266135Y
- Authority
- CN
- China
- Prior art keywords
- switch
- circuit
- reometer
- leakage tests
- examination
- 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
The utility model relates to a low-voltage and electric-leakage tester, and belongs to the electric test instrument class. The utility model is composed of a shell body, a circuit board, a draw rod antenna, a voltmeter, an ammeter, an electric test switch, a transfer switch and an electric pen socket. The circuit board is fixed in the shell body. The draw rod antenna extends out from the side surface of the shell body. The ammeter and the voltage meter are arranged in the shell body. The dials of the voltmeter and the galvanometer are positioned on the panel of the surface of the shell body. The electric test switch, the transfer switch and the electric pen socket are distributed on the panel. The circuit board is distributed with a control circuit. The utility model has the advantages of simple structure, small volume and convenient operation, and is a professional tool for electrician operation stall.
Description
The utility model is a kind of instrument that is mainly used in detection of electrical leakage in the low-voltage circuit, belongs to electrical testing instrument class.
At present, in the low-voltage power supply system of our widespread use, lack of standardization or electric wire causes the different leaky of degree because of factors such as Exposure to Sunlight, weathering wear out owing to the construction of line sometimes, and this is a kind of idle loss.This loss all will take place when user power utilization and not electricity consumption, and not only electricity wasting influences the line powering quality, and causes economic loss to the user.This low pressure leaky often is difficult for discovering, and scope is difficult to determine.
The purpose of this utility model is a kind of low pressure leakage tests instrument of design, and it is simple in structure, and volume is little, but electric leakage place in the rapidly seeking low line.
The designed low pressure leakage tests instrument of the utility model mainly is made of housing, wiring board, telescopic antenna, voltage table, reometer, examination electric switch, switch and test pencil jack, wiring board is fixed in the housing, telescopic antenna stretches out from the housing side, reometer and voltage table are installed in the housing, be connected with wiring board by lead, the dial plate of voltage table and reometer is positioned on the panel of surface of shell, examination electric switch, switch and test pencil jack also are distributed on the panel, in housing by lead will try electric switch, Test Switchboard is connected with wiring board.
The control circuit of the low pressure leakage tests instrument that the utility model is designed mainly is made up of examination electrical testing circuit and leakage tests circuit, and examination electrical testing circuit is by triode (T
1, T
2, T
3, T
4, T
5), be used to regulate the potentiometer (RP of sensitivity
1), light emitting diode (D
1), news Chinese percussion instruments (SP) form telescopic antenna (T
L) and triode (T
1) connect, test circuit is by examination electric switch (K
1) link to each other with direct supply (E); The leakage tests circuit is by reometer (A), voltage table (V), mutual inductor (T), diode (D
2), the full potentiometer (RP in school
2), test pencil jack (CK
1, CK
2) and switch (K
2) form, voltage table (V) and reometer (A) respectively with mutual inductor (T) in two groups of mutual inductors in one group connect switch (K
2) be double-break switch.
For prevent big electric current by the time damage instrument, in the control circuit of the designed low pressure leakage tests instrument of the utility model, be serially connected with protective tube (F).
The designed low pressure leakage tests instrument of the utility model if need inspected object whether charged, will try electric switch (K in use
1) press, with switch (K
2) be allocated to examination electricity shelves, draw back telescopic antenna (T
L), near object, if send the sound, display tube is luminous, illustrates that then object is charged with it, if silent sends, display tube does not work, and illustrates that then object is not charged.If need measurement circuit whether to leak electricity, then with switch (K
2) be allocated to current gear, will try the ammeter penholder and go into test pencil jack (CK
1, CK
2), the power supply plug-in strip of test line is left behind, two test pencils are serially connected in respectively between phase line and the plug-in strip corresponding point, if electric leakage, then reometer (A) can record electric current, if there is not electric leakage, then reometer (A) shows no current.If with switch (K
2) be allocated to voltage gear, also can utilize two test pencil measuring voltages, voltage value can be read from voltage table.When the big electric current that surpasses measurement range during by designed low pressure leakage tests instrument, the fuse in the protective tube (F) disconnects, and can not damage to protect other electron component.Designed low pressure leakage tests instrument still can continue to use after changing protective tube.
The circuit working principle of the low pressure leakage tests instrument that the utility model is designed is: when test object is whether charged, will try electric switch (K
1) press, try electric circuit turn-on, switch (K
2) be allocated to examination electricity shelves, the measuring current in the leakage tests circuit and the circuit of voltage are all disconnected, draw back telescopic antenna (T
L), near testee, if electricity, then telescopic antenna (T are arranged
L) sense electric signal, by triode (T
1, T
2, T
3, T
4, T
5) multipole compound amplification, locate to interrogate Chinese percussion instrument and send the sound, light emitting diode (D to interrogating Chinese percussion instrument (SP)
1) send light, show.If do not have electricity, telescopic antenna (T
L) no electric signal induction, then interrogate Chinese percussion instrument (SP) silent and send light emitting diode (D
1) not luminous, illustrate that object is not charged.When whether measurement circuit leaks electricity, then with switch (K
2) being allocated to current gear, the current circuit in the leakage tests circuit is connected, and uses examination ammeter pen contact tested wire road, if electric leakage, then electric current passes through mutual inductor (T) through diode (D
2) after the rectification, by reometer (A) expression current values, if there is not electric leakage, then the pointer of reometer (A) is motionless, shows that numerical value is zero.As switch (K
2) being allocated to voltage gear, the potential circuit in the leakage tests circuit is connected, and test pencil is contacted circuit-under-test, and reometer can show the magnitude of voltage in the circuit-under-test.
The advantage of the low pressure leakage tests instrument that the utility model is designed is:
1. function is many, and is easy to use.Can find the electric leakage position rapidly by this testing tool, and can also record the size of leakage current, all can measure in the scope of 0～3000mA.By switch (K
2) and examination electric switch (K
1) cooperation control, can also realize the net monitoring voltage, scope is at 0～500V, test has or not that alternating current, identification zero phase line, circuit breakpoint search, whether stealing etc. of user.
2. simple in structure, volume is little, is easy to carry about with one.
The measurement range of current that the designed low pressure leakage tests instrument of the utility model mainly is suitable for is at 0～3000mA, and voltage range is at 0～500V, is applicable to civilianly and industrial, and the low pressure that also can be used on others detects.
Fig. 1 is the stereographic map of the designed low pressure leakage tests instrument of the utility model.
Fig. 2 is a panel synoptic diagram among Fig. 1.
Fig. 3 is the structural representation of designed low pressure leakage tests instrument.
Fig. 4 is the circuit theory diagrams of designed low pressure leakage tests instrument.
Fig. 5 is the control circuit functional-block diagram of designed low pressure leakage tests instrument.
In conjunction with specific embodiments the embodiment and the effect of the designed low pressure leakage tests instrument of the utility model is described further with reference to the accompanying drawings below.
Embodiment
Low pressure leakage tests instrument shown in Figure 1, mainly constitute by housing 1, wiring board 2, voltage table 3, reometer 4, examination electric switch 5, switch 6, test pencil jack 7, telescopic antenna 8, its structure as shown in Figure 3, wiring board 2 is fixed in the housing 1, telescopic antenna 8 stretches out from housing 1 side, be extension type, voltage table 3 and reometer 4 are installed in the housing 1, are connected with wiring board 2 by lead.The dial plate of voltage table 3 and reometer 4 is positioned on the panel of housing 1.The panel of low pressure leakage tests instrument is distributed with dial plate, examination electric switch 5, switch 6, test pencil jack 7, the light emitting diode D of voltage table 3 and reometer 4 as shown in Figure 2 on it
1And news Chinese percussion instrument SP.In housing 1 by lead will try electric switch 5, switch 6 is connected with wiring board 2, switch 6 is double-pole five bit switches.Its control circuit figure is made up of examination electrical testing circuit and leakage tests circuit as shown in Figure 4.Examination electrical testing circuit is by triode T
1, T
2, T
3, T
4, T
5, regulate the potentiometer RP of sensitivity
1, resistance R
1, R
2, light emitting diode D
1, news Chinese percussion instrument SP, examination electric switch K
1, telescopic antenna T
LAnd power supply E forms telescopic antenna T
LBe the telescopic antenna 8 among Fig. 1, examination electric switch K
1Be the examination electric switch 5 among Fig. 3.Power supply E is the 9V direct supply.The leakage tests circuit comprises measuring current circuit, test voltage circuit, by reometer A, voltage table V, mutual inductor T, diode D
2, the full potentiometer RP in school
2, test pencil jack CK
1, CK
2And switch K
2Form.Reometer A, voltage table V, switch K
2, test pencil jack CK
1, CK
2Be reometer 4, voltage table 3, switch 6, test pencil jack 7 among Fig. 3.Be provided with protective tube F in the leakage tests circuit.Switch K
2Be double-pole five bit switches.The principle of work of control circuit as shown in Figure 5.By control examination electric switch K
1, switch K
2Conversion, carry out selection function and control is used.When the examination electricity, connect examination electric switch K
1, with switch K
2Be placed on examination electricity shelves, i.e. switch K
2Be arranged in circuit e point, telescopic antenna T
LNear testee, the electric signal sampling is by telescopic antenna T
LBehind the electrical signal of reaction, by triode T
1～T
5Compound amplification is to light emitting diode D
1And news Chinese percussion instrument SP, if then light emitting diode D of electricity is arranged
1Shinny, news Chinese percussion instrument SP sends the sound; If no electricity is light emitting diode D then
1Not luminous, news Chinese percussion instrument SP silent sends.Potentiometer RP
1Scalable is tried the sensitivity of circuit.By the examination electrical testing, have or not alternating current near can realizing judging, identification zero, phase line are sought the circuit breakpoint, judge whether function such as stealing of user, and be easy to use.When leaking hunting electricity, disconnect examination electric switch K
1, with switch K
2Be converted to the survey current gear, i.e. switch K
2Be arranged in circuit b point or c point or d point, the current gear that b, c, d are ordered is 0～30mA, 0～300mA, 0～3000mA third gear respectively, selects suitable shelves, then test pencil is inserted test pencil hole CK
1, CK
2In, contacting detected place by test pencil, the sampling of leaking electricity is through mutual inductor T adjustment, diode D
2To reometer A, by the reometer A indication of leaking electricity, leak electricity then that reometer A indicator current is zero if do not have after the rectification, if electric leakage is arranged, then reometer A shows current value.By the full potentiometer RP in school
2The calibration current Table A.If electric current is bigger, protective tube F cut-offs, with the protection testing tool.This tester also can be realized the voltage tester function by the potential circuit in the leakage tests circuit.When surveying voltage, disconnect examination electric switch K
1, with switch K
2Be converted to voltage gear, i.e. switch K
2Be arranged in circuit a point, the potential circuit conducting directly touches test pencil in the circuit-under-test, directly reads the magnitude of voltage in the circuit-under-test from voltage table.This shows that this instrumental function is strong, an instrument multi-usage, and flexible and convenient to use.In use, directly adjust the telescopic antenna 8 shown in Fig. 1,3, examination electric switch 5 and switch 6 and realize various functions, when surveying voltage or electric current, test pencil inserts in the test pencil hole 7 among Fig. 2,3, by panel shown in Figure 2 just directly read-out voltage value or current value; During the examination electricity, pull out telescopic antenna 8 near testee, by the light emitting diode D on the panel shown in Figure 2
1Whether the whether luminous news Chinese percussion instrument SP that reaches sends sound and can judge that whether charged testee is.Designed low pressure leakage tests instrument volume is little, and its length only is 145mm, 60mm, and 48mm is easy to carry about with one.
Claims (3)
1. low pressure leakage tests instrument, it is characterized in that: mainly constitute by housing, wiring board, telescopic antenna, voltage table, reometer, examination electric switch, switch and test pencil jack, wiring board is fixed in the housing, telescopic antenna stretches out from the housing side, reometer and voltage table are installed in the housing, be connected with wiring board by lead, the dial plate of voltage table and reometer is positioned on the panel of surface of shell, examination electric switch, switch and test pencil jack also are distributed on the panel, in housing by lead will try electric switch, Test Switchboard is connected with wiring board.
2. low pressure leakage tests instrument according to claim 1, its feature also is: control circuit mainly is made up of examination electrical testing circuit and leakage tests circuit, and examination electrical testing circuit is by triode (T
1, T
2, T
3, T
4, T
5), be used to regulate the potentiometer (RP of sensitivity
1), light emitting diode (D
1), news Chinese percussion instruments (SP) form telescopic antenna (T
L) and triode (T
1) connect, test circuit is by examination electric switch (K
1) link to each other with direct supply (E); The leakage tests circuit is by reometer (A), voltage table (V), mutual inductor (T), diode (D
2), the full potentiometer (RP in school
2), test pencil jack (CK
1, CK
2) and switch (K
2) form, voltage table (V) and reometer (A) respectively with mutual inductor (T) in two groups of mutual inductors in one group connect switch (K
2) be double-break switch.
3. low pressure leakage tests instrument according to claim 2, its feature also is: be serially connected with protective tube (F) in the control circuit of low pressure leakage tests instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96204678 CN2266135Y (en) | 1996-03-26 | 1996-03-26 | Low voltage leakage tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96204678 CN2266135Y (en) | 1996-03-26 | 1996-03-26 | Low voltage leakage tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2266135Y true CN2266135Y (en) | 1997-10-29 |
Family
ID=33889861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96204678 Expired - Fee Related CN2266135Y (en) | 1996-03-26 | 1996-03-26 | Low voltage leakage tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2266135Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059975A (en) * | 2018-08-09 | 2018-12-21 | 芜湖九鼎电子科技有限公司 | A kind of easy-to-dismount electronic instrument |
-
1996
- 1996-03-26 CN CN 96204678 patent/CN2266135Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059975A (en) * | 2018-08-09 | 2018-12-21 | 芜湖九鼎电子科技有限公司 | A kind of easy-to-dismount electronic instrument |
| CN109059975B (en) * | 2018-08-09 | 2020-11-06 | 安徽九上电气科技有限公司 | Electronic instrument convenient to dismantle |
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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 |