CN204188773U - A kind of multi-functional leakage current detector - Google Patents
A kind of multi-functional leakage current detector Download PDFInfo
- Publication number
- CN204188773U CN204188773U CN201420626355.7U CN201420626355U CN204188773U CN 204188773 U CN204188773 U CN 204188773U CN 201420626355 U CN201420626355 U CN 201420626355U CN 204188773 U CN204188773 U CN 204188773U
- Authority
- CN
- China
- Prior art keywords
- rheostat
- rheostatic
- switch
- reometer
- test circuit
- 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
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model provides a kind of multi-functional leakage current detector, comprising: the first test circuit, comprising: input wires terminal, current limiting safeguard resistor, the first rheostat, the switch with at least three ends and the first reometer; Described first test circuit detects the consecutive variations electric current of test specimen to be measured by the first rheostatic variable resistance; Described second test circuit, by adjustment second rheostat, the 3rd rheostatic size, to detect Sudden Changing Rate electric current and the actuation time of test specimen to be measured, realizes the unification of multiple test function, simple structure, simple, convenient, quick, highly sensitive; Not only realize the effective detection to residual current circuit breaker, and can raise labour productivity to a great extent.
Description
Technical field
The utility model relates to electric safety device field, particularly relates to a kind of multi-functional leakage current detector.
Background technology
Earth leakage protective device be one be arranged in low-voltage circuit being mainly used in the person get an electric shock protect.Earth leakage protective device is when leakage current reaches the setting value of earth leakage protective device, and action within the time limited, and cuts off the electricity supply immediately.Leakage current detector be mainly used in test earth leakage protective device residual operating current, electric leakage non-operating current and electric leakage actuation time instrument.But general leakage current detector is when detecting earth leakage protective device, be all that leakage current detects and time detecting is separated, cumbersome when leaking electricity Product checking.Therefore the reliability of leakage current detector, sensitivity are very important, and agility and convenience have more very important meaning concerning electric leakage product School Affairs boosts productivity.
Summary of the invention
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of multifunctional electric leakage tester in rated current scope and action in the stipulated time.
For realizing above-mentioned target and other related objectives, the utility model provides a kind of multi-functional leakage current detector, comprise: the first test circuit, comprising: input wires terminal, current limiting safeguard resistor, the first rheostat, the switch with at least three ends and the first reometer; Current limiting safeguard resistor one end described in described input terminal sub-connection, the other end of described current limiting safeguard resistor connects described first rheostatic one end, the described first rheostatic other end connects the second end of described switch, the first end of described switch is connected with described reometer one end, and the other end of described reometer is connected with ground wire; Described first test circuit detects the consecutive variations electric current of test specimen to be measured by the first rheostatic variable resistance; Second test circuit, comprising: described input wires terminal, described current limiting safeguard resistor, the second rheostat, the 3rd rheostat, the first self-resetting button switch, the second self-resetting button switch, the time relay, described switch and described reometer; The other end of described current limiting safeguard resistor also connects described second rheostat and the 3rd rheostatic one end; The described second rheostatic other end connects first self-resetting button switch one end, other end tie-time relay one end of the first self-resetting button switch, and the other end of the time relay connects described switch the 3rd end; The described 3rd rheostatic other end connects second self-resetting button switch one end, and the other end of described second self-resetting button switch connects one end of the described time relay; Described switch is used for switching between the first rheostat and the time relay two terminals; Described second test circuit passes through adjustment second rheostat, the 3rd rheostatic size, to detect Sudden Changing Rate electric current and the actuation time of test specimen to be measured.
Optionally, described multifunctional electric leakage tester is by being connected test specimen access live wire to be measured with described input terminal again.
Optionally, described reometer shows the consecutive variations current value that the first test circuit detects.
Optionally, described reometer shows the Sudden Changing Rate current value that the second test circuit detects.
Optionally, described reometer range is 500mA.
Optionally, the resistance of described current limiting safeguard resistor is 430 Ω.
Optionally, described first rheostat, the second rheostat and the 3rd rheostatic maximum value are 30k Ω.
Optionally, the described time relay is the timing relay of Millisecond timer.
As mentioned above, the utility model provides a kind of multi-functional leakage current detector, comprising: the first test circuit, comprising: input wires terminal, current limiting safeguard resistor, the first rheostat, the switch with at least three ends and the first reometer; Described first test circuit detects the consecutive variations electric current of test specimen to be measured by the first rheostatic variable resistance; Described second test circuit, by adjustment second rheostat, the 3rd rheostatic size, to detect Sudden Changing Rate electric current and the actuation time of test specimen to be measured, realizes the unification of multiple test function, simple structure, simple, convenient, quick, highly sensitive; Not only realize the effective detection to residual current circuit breaker, and can raise labour productivity to a great extent.
Accompanying drawing explanation
Fig. 1 is shown as the electrical block diagram of multi-functional leakage current detector in the utility model one embodiment.
Fig. 2 is shown as the electrical block diagram of a branch road in the utility model one embodiment in the second test circuit.
Fig. 3 is shown as the electrical block diagram of another branch road in the utility model one embodiment in the second test circuit.
Embodiment
Below by way of specific instantiation, embodiment of the present utility model is described, those skilled in the art the content disclosed by this instructions can understand other advantages of the present utility model and effect easily.The utility model can also be implemented or be applied by embodiments different in addition, and the every details in this instructions also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present utility model.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Refer to Fig. 1, the utility model provides a kind of multi-functional leakage current detector, comprising: the first test circuit and the second test circuit.In the present embodiment, described first test circuit and the second test circuit common sparing element, incorporated by reference to by reference to the following description.
Described first test circuit, comprising: input wires terminal p1, current limiting safeguard resistor R1, the first rheostat Rp1, the switch K3 with at least three ends and the first reometer A1; Described input wires terminal p1 connects described current limiting safeguard resistor R1 one end, the other end of described current limiting safeguard resistor R1 connects one end of described first rheostat Rp1, the other end of described first rheostat Rp1 connects the second end c2 of described switch K3, the first end c1 of described switch K3 is connected with described reometer A1 one end, and the other end of described reometer A1 is connected with ground wire; Described first test circuit detects the consecutive variations electric current of test specimen to be measured by the variable resistance of the first rheostat Rp1, and described consecutive variations electric current can be slow change.
Described second test circuit, comprising: described input wires terminal p1, described current limiting safeguard resistor R1, the second rheostat Rp2, the 3rd rheostat Rp3, the first self-resetting button switch K1, the second self-resetting button switch K2, time relay KT1, described switch K3 and described reometer A1; The other end of described current limiting safeguard resistor R1 also connects one end of described second rheostat Rp2 and the 3rd rheostat Rp3, and described second rheostat Rp2 and the 3rd rheostat Rp3 is respectively in different branch; As shown in Figure 2, the other end of described second rheostat Rp2 connects first self-resetting button switch K1 one end, other end tie-time relay K T1 one end of first self-resetting button switch K1, the other end of time relay KT1 connects described switch K3 the 3rd end c3; And as shown in Figure 3, the other end of described 3rd rheostat Rp3 connects second Self-resetting button K2 switch one end, and the other end of described second self-resetting button switch K2 connects one end of described time relay KT1; Described switch K3 is used for switching between two terminals (i.e. c2 and c3) of the first rheostat Rp1 and time relay KT1; Described second test circuit passes through the size of adjustment second rheostat Rp1, the 3rd rheostat Rp2, to detect Sudden Changing Rate electric current and the actuation time of test specimen to be measured.
Optionally, described multifunctional electric leakage tester is by being connected test specimen access live wire to be measured with described input terminal again.
In the present embodiment, described reometer shows the consecutive variations current value that the first test circuit detects; Optionally, described reometer shows the Sudden Changing Rate current value that the second test circuit detects.Described reometer according to standard can adopt the amp gauge of 500mA (the rated residual operating current standard value of earth leakage protective device is: 0.006,0.01,0.03,0.1,0.3,0.5A).Current-limiting resistance R1 can with the high-power resistance of 430 Ω, first rheostat Rp1, the second rheostat Rp2 and the 3rd rheostat Rp3 can use the multi-turn knob rheostat of 30k Ω, and the time relay can adopt the timing relay of Millisecond timer (standard specifies that maximum actuation time is 0.3s).
Illustrate the specific works of multifunctional tester of the present utility model:
(1) in the slow variable-current circuit of measurement, test specimen access live wire to be measured is connected with input terminal p1 again, switch switches to connection terminal c3 place, by regulating the first rheostat Rp1, make electric current slowly increase from minimum value, the actual act current value of test product to be measured can be observed on reometer A1.
(2) in Sudden Changing Rate electric current and the test circuit of actuation time, first the upper and lower bound setting electric current is needed, such as when detection rated residual operating current standard value is the product of 30mA, upper current limit I Δ n is set: switch switches to connection terminal c2 place, closed first self-resetting button switch K1, standardsizing rheostat Rp2, makes reometer A1 be shown as 30mA, disconnects the first self-resetting button switch K1; Arrange lower current limit 0.5I Δ n: switch K3 and switch to connection terminal c2 place, closed second self-resetting button switch K2, standardsizing rheostat Rp3, make reometer A1 be shown as 15mA, disconnect the second self-resetting button switch K2;
Electric leakage action limit time is set: setup times relay K T1 is such as 300ms.
Test product test to be measured: test specimen access live wire to be measured is connected with input terminal p1 again.First press the second self-resetting button switch K2, keep 1s, unclamp, now test product to be measured does not answer action; Closed first self-resetting button switch K1 again, keeps 1s, disconnects, and now test product to be measured should action; The product performance requirement of leakage current scope that whether test product to be measured meet standard and specify, action in maximum time can be detected so fast.Improve labour productivity simultaneously and greatly.According to the characteristic of manufacturer's product and requirement, stricter detection method can also be set easily, as reduced electric current actuating range or time under reach etc.
In sum, the utility model provides a kind of multi-functional leakage current detector, comprising: the first test circuit, comprising: input wires terminal, current limiting safeguard resistor, the first rheostat, the switch with at least three ends and the first reometer; Described first test circuit detects the consecutive variations electric current of test specimen to be measured by the first rheostatic variable resistance; Described second test circuit, by adjustment second rheostat, the 3rd rheostatic size, to detect Sudden Changing Rate electric current and the actuation time of test specimen to be measured, realizes the unification of multiple test function, simple structure, simple, convenient, quick, highly sensitive; Not only realize the effective detection to residual current circuit breaker, and can raise labour productivity to a great extent.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (8)
1. a multi-functional leakage current detector, is characterized in that, comprising:
First test circuit, comprising: input wires terminal, current limiting safeguard resistor, the first rheostat, the switch with at least three ends and the first reometer; Current limiting safeguard resistor one end described in described input terminal sub-connection, the other end of described current limiting safeguard resistor connects described first rheostatic one end, the described first rheostatic other end connects the second end of described switch, the first end of described switch is connected with described reometer one end, and the other end of described reometer is connected with ground wire; Described first test circuit detects the consecutive variations electric current of test specimen to be measured by the first rheostatic variable resistance;
Second test circuit, comprising: described input wires terminal, described current limiting safeguard resistor, the second rheostat, the 3rd rheostat, the first self-resetting button switch, the second self-resetting button switch, the time relay, described switch and described reometer; The other end of described current limiting safeguard resistor also connects described second rheostat and the 3rd rheostatic one end; The described second rheostatic other end connects first self-resetting button switch one end, other end tie-time relay one end of the first self-resetting button switch, and the other end of the time relay connects described switch the 3rd end; The described 3rd rheostatic other end connects second self-resetting button switch one end, and the other end of described second self-resetting button switch connects one end of the described time relay; Described switch is used for switching between the first rheostat and the time relay two terminals; Described second test circuit passes through adjustment second rheostat, the 3rd rheostatic size, to detect Sudden Changing Rate electric current and the actuation time of test specimen to be measured.
2. multi-functional leakage current detector according to claim 1, is characterized in that, described multifunctional electric leakage tester is by being connected test specimen access live wire to be measured with described input terminal again.
3. multi-functional leakage current detector according to claim 1, is characterized in that, described reometer shows the consecutive variations current value that the first test circuit detects.
4. multi-functional leakage current detector according to claim 1, is characterized in that, described reometer shows the Sudden Changing Rate current value that the second test circuit detects.
5. the multi-functional leakage current detector according to claim 3 or 4, is characterized in that, described reometer range is 500mA.
6. multi-functional leakage current detector according to claim 1, is characterized in that, the resistance of described current limiting safeguard resistor is 430 Ω.
7. multi-functional leakage current detector according to claim 1, is characterized in that, described first rheostat, the second rheostat and the 3rd rheostatic maximum value are 30k Ω.
8. multi-functional leakage current detector according to claim 1, is characterized in that, the described time relay is the timing relay of Millisecond timer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420626355.7U CN204188773U (en) | 2014-10-27 | 2014-10-27 | A kind of multi-functional leakage current detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420626355.7U CN204188773U (en) | 2014-10-27 | 2014-10-27 | A kind of multi-functional leakage current detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204188773U true CN204188773U (en) | 2015-03-04 |
Family
ID=52620756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420626355.7U Active CN204188773U (en) | 2014-10-27 | 2014-10-27 | A kind of multi-functional leakage current detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204188773U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168650A (en) * | 2016-08-30 | 2016-11-30 | 中山市开普电器有限公司 | A kind of specified residue connects breaking capacity test device |
| CN110244160A (en) * | 2018-03-09 | 2019-09-17 | 黄家军 | Leakage current detector |
-
2014
- 2014-10-27 CN CN201420626355.7U patent/CN204188773U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168650A (en) * | 2016-08-30 | 2016-11-30 | 中山市开普电器有限公司 | A kind of specified residue connects breaking capacity test device |
| CN110244160A (en) * | 2018-03-09 | 2019-09-17 | 黄家军 | Leakage current detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101793943B (en) | Intelligent type test system for service life of fuses | |
| CN103346532B (en) | Electric leakage prevention plug circuit | |
| CN204188773U (en) | A kind of multi-functional leakage current detector | |
| CN103954872B (en) | Transformer temperature rise measuring device and method | |
| CN201654166U (en) | Intelligent fuse life testing system | |
| CN108802474A (en) | A kind of current measuring method and its device | |
| CN103176099B (en) | Pre-closing main wire short-circuit detection sensing device for low-voltage circuit breakers | |
| CN106291083A (en) | Portable protection pressing plate voltage check device | |
| CN202631656U (en) | Automatic regulating temperature-rise testing device for multi-loop current | |
| CN107329015B (en) | Human safety simulation test method and device | |
| CN206788316U (en) | Circuit board testing device | |
| JP6420957B2 (en) | Test apparatus and method | |
| KR101764777B1 (en) | Educational circuit breaker property visualization apparatus | |
| CN204101613U (en) | A kind of non-contact switch amount condition checkout gear | |
| ATE354101T1 (en) | SWITCH DEVICE | |
| CA2868454C (en) | Method and apparatus for detecting a glowing contact in a power circuit | |
| CN209327462U (en) | A kind of circuit of test sample short circuit current current limliting time | |
| CN204882693U (en) | Trip protections equipment and electroscope thereof | |
| KR101783434B1 (en) | Earth leakage circuit breaker system for security in the vulnerable areas of the electric shock accidents which apply the reduction technology to shorten operating time by 50% | |
| CN209327461U (en) | Dangerous spark identification apparatus at a kind of short-circuit contact | |
| CN103163376A (en) | Intelligent multi-purpose insulation resistance tester | |
| CN210222113U (en) | Circuit protection detection system of protector | |
| CN207318664U (en) | A kind of direct current test product switchs on/off switch detection device | |
| CN207067350U (en) | A kind of 10kV car switches loop resistance tests wiring special purpose device | |
| KR101762362B1 (en) | Earth leakage circuit breaker system for security in the vulnerable areas of the electric shock accidents which apply the reduction technology to shorten operating time by 50% based on electronic circuit design of earth leakage circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |