CN2624215Y - Intelligent digital display pocket leakage current protector detector - Google Patents
Intelligent digital display pocket leakage current protector detector Download PDFInfo
- Publication number
- CN2624215Y CN2624215Y CN 03222486 CN03222486U CN2624215Y CN 2624215 Y CN2624215 Y CN 2624215Y CN 03222486 CN03222486 CN 03222486 CN 03222486 U CN03222486 U CN 03222486U CN 2624215 Y CN2624215 Y CN 2624215Y
- Authority
- CN
- China
- Prior art keywords
- shell
- circuit
- protector
- detector
- leakage current
- 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
Links
- 230000001012 protector Effects 0.000 title claims abstract description 37
- 238000012360 testing method Methods 0.000 claims abstract description 30
- 239000000523 sample Substances 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims description 6
- 229910052754 neon Inorganic materials 0.000 claims description 6
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses a pocket leakage current protector detector of intelligence digital display, characterized by: the device is provided with a pen-shaped shell, one end of the shell is provided with a needle type probe and a grounding connecting clamp, the shell is also provided with a detection key and a digital display window, and a detection circuit is arranged in the shell. The beneficial effects are as follows: the wiring is convenient, and a pen-shaped watch stick type is adopted. The structure is simple, the performance is reliable, the reading is accurate, and the error caused by the action delay of the matched touch device can be automatically corrected. The device can be used for independent off-line test or on-line operation test, so that the performance of the protector can be tested conveniently, and the three-phase operation balance degree of a circuit can be judged. The protection function is complete, digital display, single key control, single wire access, carrying operation and performance are particularly suitable for the use of front-line electrician and electricity utilization inspection departments.
Description
Described technical field:
The utility model relates to electronic test equipment, is a kind of portable tester of testing electronic product performance, specifically, is the pocket leakage current protector of a kind of intelligent digital detector.
Background technology:
It is an important safety technique for using electricity measure that RCD is installed.Because earth leakage protective device is in long-time running, its performance index change inevitably, jeopardize the normal safe operation of supply line.Therefore the performance index that in time detect protector are very necessary, and country and power department all have strict requirement and regulation to operating inspection, the detection of protector.There is special statutory standard in RCD country; its everyway there are strict regulation and concrete data; the qualified protector that dispatches from the factory; with regard to we user; general make some profiles, wiring degree of tightness, aspect such as firm is installed checks intuitively; but the most direct important parameter of influence safety: 1, leakage action current, 2, electric leakage all can't detect actuation time easily.
Several detection meanss commonly used at present:
1, trial jump button test.Trial jump is the operate as normal of protector management, but the existence that it can only the qualitative detection function, because of protector product difference, the quality of the zero-sequence mutual inductance that has all can't be checked out, and more can not detect actuation time.
2, stake resistance (or bulb) test.This method is very big because of resistance self-temperature, voltage equal error with the electric current of the dangerous resistance estimation of examination, almost can not provide valuable reference for the situation of circuit, and can't detect actuation time.
3, at present commercially available detector detects, and two kinds of mechanical gauge outfit and digital displays are arranged.
(1) electric current forms circuit, the regular heating of resistance, potentiometer, burns out, and the life-span is short; SCR control makes voltage waveform distortion, is not sinusoidal wave; The transformer step-down forms, and volume is big, can not survey leakage in service and protect.
(2) wiring is numerous, and operability requires high, often various mistakes occur because of wiring error with regard to common rural power workers such as village electricians, and mistake is surveyed, danger.
(3) precision is not considered the time-delay of equipment and the fluctuation of voltage.
(4) carry inconvenience, environment for use requires high.
4, professional test equipment, reason such as it is high also to exist operation to require, and the wiring complexity requires to take off operation and detects etc., and involves great expense, and inconvenience is promoted, and is difficult in maintenance.
Along with carry out of rural area electricity because of improvement project, the operation conditions of the supply line in China most of power supply user area is greatly improved.For protector is played a protective role more reliably; producer and power supply department are to the desired action current of protector and all select sensitive numerical value actuation time as far as possible for use; border investigation factually; most of total protector (indirect contact protection) is all selected action current 200mA and following for use, the type that break 0.2S is following.This improved the precision part of having any problem to the former protector tester that can form the above analog current of 1A.
The utility model content:
The purpose of this utility model provides a kind of dependable performance; reading is accurate; single key stroke; and the automatic supporting error that causes by the action delay of tentaculum of modifying factor of energy; off-line test or on-line operation test separately; be convenient to survey the performance of protector, function is complete, carries the pocket leakage current protector of intelligent digital simple to operation detector.
Technical solution of the present utility model is: the pocket leakage current protector of a kind of intelligent digital detector; it is characterized in that: a form of a stroke or a combination of strokes shell is arranged, and shell one end is equipped with the pin type probe, and has ground connection to connect folder; detect button, digital displaying window on the shell in addition, testing circuit is housed in the shell.
The Metal Contact sheet also is housed on the shell described in the utility model, and the Metal Contact sheet is connected with probe through neon bulb.The neon bulb window is arranged on the shell.A single-chip microcomputer is arranged in the testing circuit, single-chip microcomputer is connected to digital display circuit, and is connected with a current sampling circuit, and current sampling circuit electric current formation circuit after tested is connected, measuring current forms circuit and is connected with probe, and measuring current forms circuit and also is connected with the output of single-chip microcomputer.Single-chip microcomputer also is connected to singly-bound function commutation circuit.
The beneficial effects of the utility model are:
1, analog current, phase line forms over the ground, and easy-to-connect adopts pen type table bar type.
2, electric current 100 (2A-100mA), 200 (100-200mA), 300 (150-300mA), 500 (250-500mA) fourth gear stage by stage; improved every grade measuring accuracy; and the standard of the electric current of survey during actuation time, the time is working value, the rate of change 1ms when the current value (the specified working value of protector) that is provided with.
3, the formation electric current is level and smooth, and load voltage is all-wave (sine wave), and rate of change is unit with 1mA/500s, finishes in the maximum 15s of measuring current.
4, simple in structure, dependable performance, reading is accurate, loop actual measurement reading, and the automatic supporting error that causes by the action delay of tentaculum of modifying factor.
5, off-line test or on-line operation are tested separately, are convenient to survey the performance of protector, can judge the three-phase operation quality of balance of circuit again.
6, main singly-bound Control current, the time switches, gear switch, protection resets, inner single-chip microcomputerized control, holding circuit is complete, warning circuit etc., the user feels hommization.
7, profile pen type, the digital demonstration, the strong control of list, the single line turnover, Auto Power On 200mA shelves carry operation and performance and are specially adapted to a line electrician and the use of power utility check department.
Below in conjunction with drawings and Examples the utility model is further described:
Description of drawings:
Fig. 1 is the external structure of the pocket leakage current protector of a kind of intelligent digital of the present utility model detector;
Fig. 2 is the theory diagram of the pocket leakage current protector of intelligent digital of the present utility model detector;
Fig. 3 is the electrical schematic diagram of the pocket leakage current protector of intelligent digital of the present utility model detector.
Embodiment:
Fig. 1, Fig. 2, Fig. 3 have described an embodiment of the present utility model jointly.Among Fig. 1, a form of a stroke or a combination of strokes shell 1 is arranged, shell 1 one ends are equipped with pin type probe A 1, and have ground connection to connect folder A2, detect button AN and digital displaying window 3 on the shell 1 in addition, in the shell 1 testing circuit are housed.Metal Contact sheet M also is housed on the described shell 1, and Metal Contact sheet M is connected with probe A 1 through neon bulb 5.The neon bulb window is arranged on the shell.Fig. 2 is a theory diagram, a singlechip CPU is arranged in its testing circuit, singlechip CPU is connected to digital display circuit 21, and be connected with a current sampling circuit 22, current sampling circuit 22 electric current formation circuit 23 after tested is connected, measuring current forms circuit 23 and is connected with probe A 1, and measuring current forms circuit 23 and also is connected with the output of singlechip CPU.Singlechip CPU also is connected to function commutation circuit 24.Fig. 3 is an electrical schematic diagram, comprising CPU (model PIC16C770), optocoupler GD, triode Q, diode D1, D2, D3, D4, D5, D6, D7, D8, capacitor C 1, C2, C3, resistance R 0, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, button AN, three charactrons etc.
The principle of work and the course of work:
1, start: be automatically made the 200mA current gear.A2 measures examination clamping connection residence line or N line, the setup test of A1 prod.
2, shift function key (singly-bound): set (or closest value) according to the protector nominal value
Short pressing: electric current ← → the time handoff functionality.
The long 2S that presses: gear switch
Protection resets:
When tester entered the protection warning, the short function key of pressing returned to open state, continued test or reinitialized function or gear.
3, current detecting: when A1 test probe one contact phase line, the test major loop forms the loop immediately.The CPU8 pin promptly has the drive signal output of the corresponding minimum current value of this grade after start, so the CPU7 pin detects the relevant voltage data at once, these data are for reading and from showing that charactron shows, simultaneously 7 pin send instruction for the output current drive signal circuit of CPU inside, and 8 pin are increased progressively to this grade mxm. from the signal of this grade minimum value speed with 1mA/50ms.And real-time reading (real-valued).When protector moves; detecting mouthful 7 pin voltages disappears at once; this moment, reading was revised the actual value that reads the preceding 100ms of outage automatically; because of reaching working value at the detection electric current, protector a time-delay or actuation time are arranged to actual the disconnection; GB is not more than 0.2S when being defined in the desired action current value; current value when reading actual outage now is the value during 100ms forward; make reading more accurate; approach the actual act value of protector; if and connect the protective relay of tentaculum outward; the contactor disjunction also has certain break (GB also has special regulation); automatically revise the reading value of 100ms, can guarantee that also reading value in combined protective device is the numerical value in the actuation time of protector 0.2S.
After the protector action, read data presented, show the state that is provided with before 10s is returned to test automatically, but follow-on test then enters test process at once in the 10s.
Protection reaches this grade maximal value in loop current and does not move yet, and 2s then delays time; the CPU8 pin is exported this tester minimum drive current (being equivalent to 2mA), and display alarm, and the protection pilot lamp is bright; character " 1 " is with 2Hz flicker, show gear be provided with less than normal or protector malfunctioning.Need this moment to make detector reset to open state 200mA current gear, otherwise the locking all functions do not enter testing process by function key.
4, detect actuation time:
When the electric current value of setting was any gear, weak point entered the test duration state by function key.This moment, the CPU8 pin was output as the peaked drive signal that this grade is provided with current value.When prod a2 one contact phase line, the CPU7 pin detects the signal of the current shelves lowest high-current value of major loop at once, state 0ms when the display screen horse back enters survey from show state is set, 7 pin send the signal that picks up counting for CPU internal clocking circuit simultaneously, and show reading with the 1ms precision.When protector moved, CPU7 pin voltage disappeared at once, and timing this moment numerical value shows that locking is for reading.This show to keep 10s, returns to timing state is set, and prepares second test, but follow-on test enters test process actuation time at once in the 10s.
Protection, when the test duration arrives the 2s protector and do not move yet, the CPU8 pin is exported this tester minimum drive current (being equivalent to 2mA), and display alarm, the protection pilot lamp is bright, character " 1 " is with the 2Hz flicker, show gear be provided with less than normal or protector malfunctioning.Need this moment to make detector reset to open state 200mA current gear, otherwise the locking all functions do not enter testing process by function key.
Claims (5)
1, the pocket leakage current protector of a kind of intelligent digital detector is characterized in that: a form of a stroke or a combination of strokes shell is arranged, and shell one end is equipped with the pin type probe, and has ground connection to connect folder, detects button, digital displaying window on the shell in addition, and testing circuit is housed in the shell.
2, the pocket leakage current protector of intelligent digital according to claim 1 detector is characterized in that: the Metal Contact sheet also is housed on the shell, and the Metal Contact sheet is connected with probe through neon bulb.
3, the pocket leakage current protector of intelligent digital according to claim 2 detector is characterized in that: the neon bulb window is arranged on the shell.
4, according to claim 1, the pocket leakage current protector of 2 or 3 described intelligent digitals detector; it is characterized in that: a single-chip microcomputer is arranged in the testing circuit; single-chip microcomputer is connected to digital display circuit; and be connected with a current sampling circuit; current sampling circuit electric current formation circuit after tested is connected; measuring current forms circuit and is connected with probe, and measuring current forms circuit and also is connected with the output of single-chip microcomputer.
5, according to claim 1, the pocket leakage current protector of 2 or 3 described intelligent digitals detector, it is characterized in that: single-chip microcomputer also is connected to singly-bound function commutation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03222486 CN2624215Y (en) | 2003-06-04 | 2003-06-04 | Intelligent digital display pocket leakage current protector detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03222486 CN2624215Y (en) | 2003-06-04 | 2003-06-04 | Intelligent digital display pocket leakage current protector detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2624215Y true CN2624215Y (en) | 2004-07-07 |
Family
ID=34245274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03222486 Expired - Fee Related CN2624215Y (en) | 2003-06-04 | 2003-06-04 | Intelligent digital display pocket leakage current protector detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2624215Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267923A (en) * | 2013-05-10 | 2013-08-28 | 陈肖粟 | Safety grounding all-purpose online detector |
| CN104730326A (en) * | 2015-04-09 | 2015-06-24 | 韦明肯 | Eleven-order alternating voltage test pencil |
| CN105041379A (en) * | 2015-09-13 | 2015-11-11 | 王玉喜 | Gas monitoring system line fault searching instrument |
| CN105137256A (en) * | 2015-07-16 | 2015-12-09 | 国网浙江义乌市供电公司 | Leakage current monitor control device |
| CN105548757A (en) * | 2015-12-15 | 2016-05-04 | 东北电力大学 | Tester for leakage protector |
-
2003
- 2003-06-04 CN CN 03222486 patent/CN2624215Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267923A (en) * | 2013-05-10 | 2013-08-28 | 陈肖粟 | Safety grounding all-purpose online detector |
| CN104730326A (en) * | 2015-04-09 | 2015-06-24 | 韦明肯 | Eleven-order alternating voltage test pencil |
| CN105137256A (en) * | 2015-07-16 | 2015-12-09 | 国网浙江义乌市供电公司 | Leakage current monitor control device |
| CN105041379A (en) * | 2015-09-13 | 2015-11-11 | 王玉喜 | Gas monitoring system line fault searching instrument |
| CN105548757A (en) * | 2015-12-15 | 2016-05-04 | 东北电力大学 | Tester for leakage protector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103116128A (en) | Breaker overload testing device and operation method thereof | |
| CN103196491A (en) | Transformer integral comprehensive detection device | |
| CN110058188A (en) | The active detector of electric energy metering device | |
| CN108226645A (en) | A kind of vacuum circuit breaker divide-shut brake coil direct current resistance m easurem ent device | |
| CN2624215Y (en) | Intelligent digital display pocket leakage current protector detector | |
| CN103344937B (en) | Intelligent electric energy meter consumption detection equipment and detection method | |
| CN205404719U (en) | Mutual -inductor common return multipoint earthing detector | |
| CN103885025A (en) | Load contrastive analysis tester | |
| CN108132444A (en) | Direct current ripple coefficient test device | |
| CN203396921U (en) | Multi-load voltage switch power test device | |
| CN2409523Y (en) | Electroscope | |
| CN202393816U (en) | High-voltage electrified display device | |
| CN211402698U (en) | Current gear automatic switching device | |
| CN105974332B (en) | Intrinsic safety power performance dynamic test system | |
| CN114910820A (en) | Electric leakage detection method and system based on intelligent lamp pole low-voltage electric circuit | |
| CN205139217U (en) | Take residual current circuit breaker testing capabilities's novel complex function universal meter | |
| CN202649814U (en) | A portable characteristic tester of an intelligent controller | |
| CN2694288Y (en) | Switch cabinet leakage current checking and warning device | |
| CN104820202A (en) | Electric energy meter testing device | |
| CN204649956U (en) | Detection device of electric energy meter | |
| CN203116773U (en) | Integrated comprehensive detection system for transformer | |
| CN205176223U (en) | Tester takes place for readable formula direct current | |
| CN221746188U (en) | Portable load control operation and maintenance detection device | |
| CN203811796U (en) | Load contrast analysis tester | |
| CN109696623A (en) | A kind of 10kV breaker auxiliary node automatic detection device |
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 |