CN204515063U - Leakage monitoring device - Google Patents
Leakage monitoring device Download PDFInfo
- Publication number
- CN204515063U CN204515063U CN201520246775.7U CN201520246775U CN204515063U CN 204515063 U CN204515063 U CN 204515063U CN 201520246775 U CN201520246775 U CN 201520246775U CN 204515063 U CN204515063 U CN 204515063U
- Authority
- CN
- China
- Prior art keywords
- module
- resistance
- leakage
- transformer
- comparer
- 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
- 238000012806 monitoring device Methods 0.000 title claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 238000004088 simulation Methods 0.000 claims abstract description 6
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to a kind of device that can detect electric leakage signal in time, be specially a kind of leakage monitoring device, comprise: main control module, detection of electrical leakage module, simulation electric leakage module, alarm modules, display module and power module, described main control module respectively with detection of electrical leakage module, simulate electric leakage module, alarm modules is connected with display module, described power module is that whole device is powered; The utility model is applicable to power department.
Description
Technical field
The utility model relates to a kind of device that can detect electric leakage signal in time, is specially a kind of leakage monitoring device.
Background technology
At present, various primary cut-out is had in high-pressure side to the various protective devices of low voltage distribution transformer (abbreviation transformer), lightning arrester etc., low-pressure side has various fuse, A.C. contactor, phase demodulation amplitude discrimination relay etc., although there is safeguard measure like this, but due to the various complex circuit of transformer capacity grade, it is perfectly safe that the various safeguard measures supporting with it are difficult to accomplish, especially the leak current fault of transformer, any position all likely occurs, and general earth leakage protection is all at main circuit, and leakage protection circuit itself whether effectively can not be real-time monitoring, thus cause transformer leakage fault to find timely, aging due to electrical network, the change of production environment, electrical network produces the reasons such as earth point, shorted to earth can be there is, often there is electric leakage accident in cable and motor winding, after electric leakage accident occurs, not only accident of human electric shock can be caused, also single-phase earthing can be caused, and then develop into phase fault, and then cause electrical fire accident, bring a lot of adverse effect to normal production and life.
Summary of the invention
The utility model overcomes the deficiency that prior art exists, and technical matters to be solved is: provide a kind of device that can detect electric leakage information the moment.
The utility model adopts following technical scheme to realize:
A kind of leakage monitoring device, comprise: main control module, detection of electrical leakage module, simulation electric leakage module, alarm modules, display module and power module, described main control module respectively with detection of electrical leakage module, simulate electric leakage module, alarm modules is connected with display module, described power module is that whole device is powered;
The circuit structure of described detection of electrical leakage module is: on the phase line that current transformer T1 summation current transformer T2 is serially connected in supply line respectively and zero line, the primary side of transformer T3 is wound with two groups of identical coils, and the signal output part of described current transformer T1 summation current transformer T2 is connected with transformer T3 first siding ring respectively;
The secondary side output head anode of described transformer T3 is connected with the positive pole of diode D1, be connected with the positive input terminal of comparer IC1 behind one end of the negative pole shunt-wound capacitance C1 of described diode D1, the negative pole of diode D2, ground connection behind the other end of the secondary side negative pole of output end shunt-wound capacitance C1 of described transformer T3, the positive pole of diode D2 and one end of resistance R1, the other end of described resistance R1 is also connected with the negative input end of comparer IC1 behind one end of connecting resistance R2, and the output terminal of described comparer IC1 is also connected with one end of resistance R3 after the other end of connecting resistance R2;
The other end of described resistance R3 is connected with the positive input terminal of comparer IC2, the negative input end of described comparer IC2 is also connected with one end of resistance R5 behind one end of connecting resistance R4, the other end of described resistance R4 is connected with+5V power supply, the other end ground connection of described resistance R5, be connected with the positive pole of diode D3 after the output terminal series resistor R6 of comparer IC2, the negative pole of described diode D3 is the signal output part a1 of detection of electrical leakage module.
Described detection of electrical leakage module has multiple, the electric leakage information of multiple branch road can be detected simultaneously, described current transformer T1 summation current transformer T2 is identical, symmetrically respectively be enclosed within phase line and zero line, when circuit is without electric leakage, the secondary side of transformer T3 does not produce induced potential, when circuit has an electric leakage, the secondary side of transformer T3 produces induced potential, exports electric leakage signal after being amplified by comparer.
Described leakage monitoring device also includes temperature detecting module 7, and described temperature detecting module 7 is connected with above-mentioned main control module 1.
The beneficial effect that the utility model compared with prior art has is: the utility model is by electric leakage acquisition module, gather the drain conditions becoming each equipment, and drain conditions is sent to main control module, the warning connected by main control module and display module send leakage-current alarm and display, can measure drain conditions at the scene, easy to use, the electric leakage information of multiple branch road can be detected simultaneously, detect accurately, and be provided with simulation electric leakage module, electric-leakage detection circuit can be tested whether effective; Whole apparatus structure is succinct, easy to use.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model.
Fig. 2 is the circuit diagram of detection of electrical leakage module in the utility model.
In figure: 1-main control module, 2-detection of electrical leakage module, 3-simulates electric leakage module, 4-alarm modules, 5-display module, 6-power module, 7-temperature detecting module.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
A kind of leakage monitoring device, as shown in Figure 1, comprise: main control module 1, detection of electrical leakage module 2, simulation electric leakage module 3, alarm modules 4, display module 5, power module 6 and temperature detecting module 7, described main control module 1 respectively with detection of electrical leakage module 2, simulate electric leakage module 3, alarm modules 4, display module 5 be connected with temperature detecting module 7, described power module 6 is powered for whole device.
As shown in Figure 2, the circuit structure of described detection of electrical leakage module 2 is: on the phase line that current transformer T1 summation current transformer T2 is serially connected in supply line respectively and zero line, the primary side of transformer T3 is wound with two groups of identical coils, the signal output part of described current transformer T1 summation current transformer T2 is connected with transformer T3 first siding ring respectively, and the primary side of transformer T3 and the turn ratio of secondary side are 1:5.
The secondary side output head anode of described transformer T3 is connected with the positive pole of diode D1, be connected with the positive input terminal of comparer IC1 behind one end of the negative pole shunt-wound capacitance C1 of described diode D1, the negative pole of diode D2, ground connection behind the other end of the secondary side negative pole of output end shunt-wound capacitance C1 of described transformer T3, the positive pole of diode D2 and one end of resistance R1, the other end of described resistance R1 is also connected with the negative input end of comparer IC1 behind one end of connecting resistance R2, and the output terminal of described comparer IC1 is also connected with one end of resistance R3 after the other end of connecting resistance R2.
The other end of described resistance R3 is connected with the positive input terminal of comparer IC2, the negative input end of described comparer IC2 is also connected with one end of resistance R5 behind one end of connecting resistance R4, the other end of described resistance R4 is connected with+5V power supply, the other end ground connection of described resistance R5, be connected with the positive pole of diode D3 after the output terminal series resistor R6 of comparer IC2, the negative pole of described diode D3 is the signal output part a1 of detection of electrical leakage module 2.
Described detection of electrical leakage module 2 has multiple, the electric leakage information of multiple branch road can be detected simultaneously, described current transformer T1 summation current transformer T2 is identical, symmetrically respectively be enclosed within phase line and zero line, when circuit is without electric leakage, the secondary side of transformer T3 does not produce induced potential, when circuit has an electric leakage, the secondary side of transformer T3 produces induced potential, exports electric leakage signal after being amplified by comparer.
The utility model is by electric leakage acquisition module, gather the drain conditions becoming each equipment, and drain conditions is sent to main control module, the warning connected by main control module and display module send leakage-current alarm and display, can measure drain conditions at the scene, easy to use, the electric leakage information of multiple branch road can be detected simultaneously, detect accurately, and be provided with simulation electric leakage module, electric-leakage detection circuit can be tested whether effective; Whole apparatus structure is succinct, easy to use.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, can also make a variety of changes under the prerequisite not departing from the utility model aim.
Claims (3)
1. a leakage monitoring device, it is characterized in that: comprise main control module (1), detection of electrical leakage module (2), simulation electric leakage module (3), alarm modules (4), display module (5) and power module (6), described main control module (1) respectively with detection of electrical leakage module (2), simulate electric leakage module (3), alarm modules (4) is connected with display module (5), described power module (6) is powered for whole device;
The circuit structure of described detection of electrical leakage module (2) is: on the phase line that current transformer T1 summation current transformer T2 is serially connected in supply line respectively and zero line, the primary side of transformer T3 is wound with two groups of identical coils, and the signal output part of described current transformer T1 summation current transformer T2 is connected with transformer T3 first siding ring respectively;
The secondary side output head anode of described transformer T3 is connected with the positive pole of diode D1, be connected with the positive input terminal of comparer IC1 behind one end of the negative pole shunt-wound capacitance C1 of described diode D1, the negative pole of diode D2, ground connection behind the other end of the secondary side negative pole of output end shunt-wound capacitance C1 of described transformer T3, the positive pole of diode D2 and one end of resistance R1, the other end of described resistance R1 is also connected with the negative input end of comparer IC1 behind one end of connecting resistance R2, and the output terminal of described comparer IC1 is also connected with one end of resistance R3 after the other end of connecting resistance R2;
The other end of described resistance R3 is connected with the positive input terminal of comparer IC2, the negative input end of described comparer IC2 is also connected with one end of resistance R5 behind one end of connecting resistance R4, the other end of described resistance R4 is connected with+5V power supply, the other end ground connection of described resistance R5, be connected with the positive pole of diode D3 after the output terminal series resistor R6 of comparer IC2, the negative pole of described diode D3 is the signal output part a1 of detection of electrical leakage module (2).
2. a kind of leakage monitoring device according to claim 1, is characterized in that: described detection of electrical leakage module (2) has multiple.
3. a kind of leakage monitoring device according to claim 1 and 2, is characterized in that: described leakage monitoring device also includes temperature detecting module (7), and described temperature detecting module (7) is connected with above-mentioned main control module (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520246775.7U CN204515063U (en) | 2015-04-22 | 2015-04-22 | Leakage monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520246775.7U CN204515063U (en) | 2015-04-22 | 2015-04-22 | Leakage monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204515063U true CN204515063U (en) | 2015-07-29 |
Family
ID=53713022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520246775.7U Active CN204515063U (en) | 2015-04-22 | 2015-04-22 | Leakage monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204515063U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749484A (en) * | 2015-04-22 | 2015-07-01 | 国家电网公司 | Electric-leakage monitoring device |
-
2015
- 2015-04-22 CN CN201520246775.7U patent/CN204515063U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749484A (en) * | 2015-04-22 | 2015-07-01 | 国家电网公司 | Electric-leakage monitoring device |
| CN104749484B (en) * | 2015-04-22 | 2017-06-06 | 国家电网公司 | Leakage monitoring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104749484A (en) | Electric-leakage monitoring device | |
| CN103558502B (en) | Single-phase earth fault detection circuit, method and system | |
| CN104375069A (en) | 240V high-voltage direct current insulation monitoring system | |
| CN203572909U (en) | Single-phase ground fault detection circuit and system | |
| CN103558506A (en) | Method and device for searching for ground faults of non-injection type direct current system | |
| CN202351365U (en) | Small-current grounding alarm equipment and alarm system | |
| CN204515063U (en) | Leakage monitoring device | |
| CN105182157A (en) | Neutral point multi-point grounding detection device based on high-accuracy detection current | |
| CN203673002U (en) | Direct current system earth fault searching device | |
| CN202956482U (en) | Small current system single-phase grounding fault detection verifying device | |
| CN102288868A (en) | One-point grounding detector and detection method for voltage transformer secondary coil neutral line | |
| CN105403808B (en) | A kind of localization method and device of DC line earth fault | |
| CN101950943B (en) | On-line monitoring protection method and device for distributed zero line breakage | |
| CN202177679U (en) | One-point grounding detection device for secondary coil neutral wire of voltage transformer | |
| CN105675998B (en) | Footing impedance measuring apparatus and its operating method | |
| CN203825172U (en) | DC power supply system alternating current mixed detection device | |
| CN205015427U (en) | Neutral point multipoint earthing detection device based on high accuracy testing electric current | |
| CN103116108B (en) | Intelligent detector for direct-current power supply system of transformer substation | |
| CN104614627A (en) | Portable DC leakage detection positioning device and detection positioning method | |
| CN204374371U (en) | A kind of D.C. isolation monitoring device detects the failure alarm circuit of electric bridge | |
| CN204536461U (en) | A kind of movable DC detection of electrical leakage positioning equipment | |
| CN201681136U (en) | Fault point positioning device for neutral point grounding system | |
| CN111327034B (en) | Arc extinction and overvoltage protection device | |
| CN103197201B (en) | Low-resistance, medium-resistance and high-resistance grounding fault type recognition method of power transmission line | |
| CN105186694A (en) | Commercial power switching control apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |