CN103972863A - Real-time detection and control device for shunt electric leakage - Google Patents
Real-time detection and control device for shunt electric leakage Download PDFInfo
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- CN103972863A CN103972863A CN201410154285.4A CN201410154285A CN103972863A CN 103972863 A CN103972863 A CN 103972863A CN 201410154285 A CN201410154285 A CN 201410154285A CN 103972863 A CN103972863 A CN 103972863A
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- switch
- shunt
- control device
- time detection
- electric leakage
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Abstract
The invention provides a real-time detection and control device for shunt electric leakage. Wires led out of an isolation transformer are connected with a main switch and connected with all shunt switches in parallel; each switch is connected with an electric leakage detection device in series, a current mutual inductor is installed between the main switch and each shunt switch and connected with the shunt switch in parallel; each shunt switch is connected with a strong current box and a display plate in series; all the wires output by the main switch penetrate through rings of the current mutual inductors; the strong current boxes and the display plates are connected through four signal lines, and a main line and shunts are respectively connected with an alarm output device and a protection output device. The real-time detection and control device has the advantages of being capable of effectively detecting an electric leakage line and automatically cutting off the fault shunt without affecting power supply of the other lines.
Description
Technical field
The present invention relates to a kind of power safety device, especially a kind of safety utilization of electric power device of high-power electric appliance.
Background technology
For high-power electricity consumption occasions such as oil field drilling drilling team, field works, there is leak current fault in a certain shunt, and system can be cut off whole circuit, affects Electrical Safety, therefore needs a kind of type safety power supply along separate routes.
Summary of the invention
The object of the invention is to avoid the deficiencies in the prior art and provide one many secure power devices along separate routes.
Technical scheme of the present invention is: real-time detection control device along separate routes leaks electricity, comprise isolating transformer, switch, earth detector, current transformer, forceful electric power box, display panel, the wire that isolating transformer is drawn is connected with master switch, and in parallel with each branch switch; Each switch earth detector of all connecting; Current transformer is installed between master switch and each branch switch, in parallel with each branch switch; Each branch switch is in series with forceful electric power box and display panel.
All wires of described master switch output are through current transformer ring.
Described forceful electric power box is connected by 4 signal line with display panel.
Described Zong road and shunt are all connected with alarm output device and protection output device.
Advantage of the present invention is effectively to detect electric leakage circuit, and disengagement failure along separate routes, does not affect the power supply of other circuit automatically.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is circuit connection diagram of the present invention.
In figure, 1 is isolating transformer, and 2 is master switch, and 3 is instrument transformer ring, and 4 is branch switch, and 5 is forceful electric power box, and 6 is display panel, and 7 is current transformer.
Embodiment
Describe embodiments of the invention in detail below in conjunction with accompanying drawing.
The real-time detection control device that leaks electricity along separate routes, comprises isolating transformer 1, switch, earth detector, current transformer 7, forceful electric power box 5, display panel 6, and the wire that isolating transformer 1 is drawn is connected with master switch 2, and in parallel with each branch switch 4; Each switch 2 and 4 earth detector of all connecting; Current transformer 7 is installed between master switch 2 and each branch switch 4, in parallel with each branch switch 4; Each branch switch 4 is in series with forceful electric power box 5 and display panel 6.
All wires that described master switch 2 is exported are through current transformer ring 3.
Described forceful electric power box 5 is connected by 4 signal line with display panel 6.
Described Zong road and shunt are all connected with alarm output device and protection output device.
Each branch switch 4 is equipped with circuit kit plate, and every suit circuit board comprises forceful electric power box 5 and display panel 6 two parts.Be connected by 4 signal line between the two.If find that parameter measurement has error, can calibrate by remote-control box.
Remote-control box connecting line is inserted in the PS socket of display panel 6, power transmission again, or click near RST button PS socket, the program of display panel 6 enters into the state of setting.Enter after the state of setting, can calibrate three-phase voltage, three-phase current, arranges current transformer range, and calibration ohmic leakage, sets warning ohmic leakage, and delay protection time totally ten parameters.Wherein, three-phase voltage, three-phase current, instrument transformer range, ohmic leakage is calibrated this eight parameters, is arranged in the single-chip microcomputer of forceful electric power box 5, warning ohmic leakage and delay protection time, is arranged in the single-chip microcomputer of display panel 6.
If leak current fault appears in a certain shunt, total road and branch apparatus all can detect this fault, cut off along separate routes instead of the cut-out of total road in order to allow, and just need the ratio of Jiang Zong road delay protection set of time longer along separate routes.Total road and shunt are all with output and the protection output of reporting to the police, if within the time of setting, fault is not got rid of, and corresponding shunt will be cut off, for total road, because fault disappears, so alarm can stop automatically.
The ALM line of forceful electric power box 5 is: warning output line, and inside is controllable silicon, load is connected between XA1 and X01, notices that load can not be neon bulb indicator light.Ohmic leakage is lower than set point, and warning will occur.During warning, if electric leakage signal oneself disappears, warning can stop automatically.During warning, if press external reset switch, meeting temporary close alarm, but alarm timer still carries out.
The PT1-PT2 of forceful electric power box 5: protection output line, inside is relay contact, outside cuts off for driving switch.If reported to the police, the duration has reached the time of delay of setting, and this contact will be connected, and meanwhile, system can lock, and all demonstration information also can remain unchanged, until press reset button.
Claims (4)
1. the real-time detection control device that leaks electricity along separate routes, comprises isolating transformer, switch, earth detector, current transformer, forceful electric power box, display panel, it is characterized in that the wire that isolating transformer is drawn is connected with master switch, and in parallel with each branch switch; Each switch earth detector of all connecting; Current transformer is installed between master switch and each branch switch, in parallel with each branch switch; Each branch switch is in series with forceful electric power box and display panel.
2. shunt electric leakage real-time detection control device according to claim 1, is characterized in that all wires of master switch output are through current transformer ring.
3. shunt electric leakage real-time detection control device according to claim 1, is characterized in that forceful electric power box is connected by 4 signal line with display panel.
4. shunt electric leakage real-time detection control device according to claim 1, is characterized in that total road and is all connected with along separate routes alarm output device and protection output device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410154285.4A CN103972863A (en) | 2014-04-17 | 2014-04-17 | Real-time detection and control device for shunt electric leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410154285.4A CN103972863A (en) | 2014-04-17 | 2014-04-17 | Real-time detection and control device for shunt electric leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103972863A true CN103972863A (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410154285.4A Pending CN103972863A (en) | 2014-04-17 | 2014-04-17 | Real-time detection and control device for shunt electric leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103972863A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112653075A (en) * | 2020-12-15 | 2021-04-13 | 刘景福 | Shunt leakage detection system and implementation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145683A (en) * | 2007-10-31 | 2008-03-19 | 李志学 | Control device for residual current of low-voltage power grid |
| CN102185296A (en) * | 2011-04-27 | 2011-09-14 | 江苏大学 | Selective electric leakage protection device and method for mine low-voltage power supply system |
| CN102393485A (en) * | 2011-09-16 | 2012-03-28 | 福建俊豪电子有限公司 | Detection module for multi-loop leakage current |
| CN102938558A (en) * | 2012-11-26 | 2013-02-20 | 保定供电公司 | Low-voltage distribution system with leakage protection device |
| CN103427343A (en) * | 2013-09-03 | 2013-12-04 | 天津华宁电子有限公司 | Mining flameproof and intrinsically-safe type load center based on high-voltage switches and low-voltage switches |
-
2014
- 2014-04-17 CN CN201410154285.4A patent/CN103972863A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145683A (en) * | 2007-10-31 | 2008-03-19 | 李志学 | Control device for residual current of low-voltage power grid |
| CN102185296A (en) * | 2011-04-27 | 2011-09-14 | 江苏大学 | Selective electric leakage protection device and method for mine low-voltage power supply system |
| CN102393485A (en) * | 2011-09-16 | 2012-03-28 | 福建俊豪电子有限公司 | Detection module for multi-loop leakage current |
| CN102938558A (en) * | 2012-11-26 | 2013-02-20 | 保定供电公司 | Low-voltage distribution system with leakage protection device |
| CN103427343A (en) * | 2013-09-03 | 2013-12-04 | 天津华宁电子有限公司 | Mining flameproof and intrinsically-safe type load center based on high-voltage switches and low-voltage switches |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112653075A (en) * | 2020-12-15 | 2021-04-13 | 刘景福 | Shunt leakage detection system and implementation method thereof |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140806 |