CN101046490A - Alarm device for abnormality in earthing system - Google Patents
Alarm device for abnormality in earthing system Download PDFInfo
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- CN101046490A CN101046490A CN 200710027822 CN200710027822A CN101046490A CN 101046490 A CN101046490 A CN 101046490A CN 200710027822 CN200710027822 CN 200710027822 CN 200710027822 A CN200710027822 A CN 200710027822A CN 101046490 A CN101046490 A CN 101046490A
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- earthed system
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Abstract
The earthing abnormality alarm device can monitor earthing status and warn abnormal earthing status, such as earth line failure, charged earth line and error connection of zero line and phase line. Technologically, the present invention features that one alarm circuit is connected between the zero pole of power input and the earth while one current limiting resistor is connected between the phase line of power input and the earth. The present invention may be used widely in safety protection of various kinds of electric appliance.
Description
Technical field
The present invention relates to the safety technique for using electricity field, particularly a kind ofly the device of indication of reporting to the police occurs to send when unusual in earthed system.
Background technology
Earthed system is a protection system the most basic in the safety utilization of electric power; so-called earthed system; be exactly the independent supporting buried underground copper bars of an end of every building building; its other end is received respectively in the socket earth polar jack of every household; when plug was inserted into this socket, the earth polar copper pin on the plug was connected with hole, socket earth polar, the yellowish green guardwire of PE that is riveted on plug earth polar copper pin then with the palp metal parts of electrical equipment; for example shell connects, and forms a complete earthed system.There is the I electric appliances of grounding requirement all need allow it keep no-voltage, to ensure user's personal safety with palp conductiving metal part is connected with earthed system.In case yet the earthed system appearance is unusual, for example occurs wiring error, socket or unexpected factors such as circuit damage and short circuit on the socket and all might make the earthed system part charged, thereby cause the electric shock casualty accident.And for example, so just equal to have lost the function of ground protection, therefore allow the in time clear earthed system situation of understanding in the power supply of user just very necessary because certain ground wire former thereby that cause lacks.The Chinese invention patent communique discloses a kind of all-purpose leakage protection plug; its patent publication No. is CN1350352A; this all-purpose leakage protection plug is a kind of comprehensive Electrical Safety protector; it is except having creepage protection function; the more important thing is that it is when earthed system is unusual; can power supply zero, phase, three extremely all disjunctions, thereby allow the palp metallic conduction parts of electrical equipment separate fully with power supply in the socket, guarantee user's safety.In case when the all-powerful leakage protection device moves because abnormal voltage is arranged earthed system,, can not send clear and definite warning indication though it can the disengagement failure power supply.
Summary of the invention
The object of the present invention is to provide a kind ofly the device of indication of reporting to the police to occur can sending when unusual in earthed system, it can monitor and warn the situation of earthed system in the power supply at any time.
Technical solution proposed by the invention is such: a kind ofly the device of indication of reporting to the police occurs can sending when unusual in earthed system, the phase utmost point, zero utmost point, earth polar and the warning circuit that comprise power input, between the zero utmost point of power input and earth polar, be connected to warning circuit, between the phase utmost point of power input and earth polar, be connected to current-limiting resistance.The executive component of described warning circuit can be pilot lamp or hummer.
When earthed system just often because the earth polar and zero utmost point be no-voltage all, warning circuit is not worked, not sending reports to the police indicates.When earthed system ground wire disappearance, the phase utmost point, current-limiting resistance, warning circuit, zero line series connection form a complete alarm circuit, send the indication of reporting to the police.When the ground wire electrification of earthed system, charged ground wire, warning circuit are connected with zero line and have also been formed a complete alarm circuit, sending the indication of reporting to the police.Have only this device to separate or after fault disappeared, the indication of reporting to the police just can be eliminated with power supply.
Compared with prior art, the remarkable result that the present invention produced is:
(1) in earthed system the device of indication of reporting to the police appears can sending when unusual, it can allow the user recognize in time whether each utmost point wiring is correct in the power supply (socket), it is unusual particularly to work as earthed system, for example ground wire electrification or ground wire lack, if ground wire electrification, it is to cause the people immediately desperately that the user uses under unwitting situation; If the ground wire disappearance just equals to have lacked ground protection for the I electric appliances, equally also can cause the electric shock casualty accident in case electric leakage takes place electrical equipment.Therefore this device is very important and effective to user's life security, and it can in time accuse it to the user, takes the precautionary measures to prevent the generation of accident.
(2) device of indication of reporting to the police occurs can sending when unusual in earthed system, it can also judge the whether reversal connection of power supply phase, zero the two poles of the earth.Because the power switch on the general consuming device all is provided in a side of mutually extremely go up, when closing power supply the phase utmost point is turn-offed, electrical equipment is no longer charged, if but that power supply phase, zero is adorned is anti-, in fact only closed zero line when electrical equipment turn-offs like this, and do not closed charged phase line, electrical equipment still is in electriferous state.Therefore this device can allow the user in time be adjusted.
(3) device of indication of reporting to the police occurs can sending when unusual in earthed system, its structure is simpler, work is more reliable.
The present invention can be widely used in and do the safety utilization of electric power protection in various household electrical appliance, the daily-use electrical appliance.
Description of drawings
Fig. 1 be one embodiment of the invention be used for the device conspectus of indication of reporting to the police appears can sending when unusual in earthed system.
Fig. 2 be another embodiment of the present invention be used for cooperating with all-purpose leakage protection plug the device conspectus of indication of reporting to the police appears can sending when unusual in earthed system.
Embodiment
By following embodiment the present invention is described in further detail.
Referring to shown in Figure 1, one embodiment of the present of invention, earthed system occur can sending when unusual report to the police indication device by warning circuit 2 and current-limiting resistance 1 insert respectively power input the zero utmost point 8, earth polar 10, the utmost point 9 constitutes mutually, 2 liang of input ends of warning circuit are connected with earth polar 10 with the N utmost point 8 with lead 7 by lead 5 respectively, and current-limiting resistance 1 two ends are connected with earth polar 10 with the L utmost point 9 with lead 7 by lead 6 respectively.The warning circuit 2 of present embodiment adopts the resistance 3 of series connection and neon lamp 4 to form, and also can adopt other sound, photoelectron alarm, and as hummer etc., in the present embodiment, the resistance of current-limiting resistance 1 is chosen 1.5 megaohms.
When ground wire 10 disappearances, promptly lead 10 disconnects, and the L utmost point 9, lead 6, current-limiting resistance 1, resistance 3, neon lamp 4, lead 5 and 8 series connection of the N utmost point at this moment form an alarm circuit, and neon lamp 4 is luminous, sends the indication of reporting to the police.
When ground wire 10 was charged, charged ground wire 10, lead 7, resistance 3, neon lamp 4, lead 5 and 8 series connection of the N utmost point formed alarm circuits, and neon lamp 4 is luminous, sending the indication of reporting to the police.
When phase, zero utmost point 9,8 connect instead, the lead 5 charged formation alarm circuits of connects with neon lamp 4, resistance 3, lead 7 and earth polar 10, neon lamp 4 is luminous, sending warning and indicating.
Have only fault to get rid of or the device that occurs can sending when unusual the indication of reporting to the police in earthed system is separated from power supply, alerting signal just can disappear.
Another embodiment of the present invention is to be used with all-purpose leakage protection plug, referring to shown in Figure 2.
At this moment; at power input and be connected to all-purpose leakage protection plug 11; the zero utmost point 8, the phase utmost point 9, earth polar 10 that are power input are connected in series with zero line contact, phase line contact, the ground wire contact of all-purpose leakage protection plug 11 respectively; thereby the indication of reporting to the police appears not only can sending when unusual in earthed system in power supply; also can be with the power supply disjunction; and have creepage protection function, electrical appliance is done comprehensive safeguard protection.This device is reported to the police, and whether disjunction is irrelevant with all-purpose leakage protection plug in indication, as long as earthed system will report to the police unusually, and has only and plug is pulled up the indication of reporting to the police just can disappear.
Claims (2)
1, a kind of in earthed system the device of indication of reporting to the police appears can sending when unusual, the phase utmost point, zero utmost point, earth polar and the warning circuit that comprise power input, it is characterized in that: between the zero utmost point of power input and earth polar, be connected to warning circuit, between the phase utmost point of power input and earth polar, be connected to current-limiting resistance.
2, according to claim 1ly the device of indication of reporting to the police occurs can sending when unusual in earthed system, it is characterized in that: the executive component of described warning circuit can be pilot lamp or hummer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710027822 CN101046490A (en) | 2007-04-24 | 2007-04-24 | Alarm device for abnormality in earthing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710027822 CN101046490A (en) | 2007-04-24 | 2007-04-24 | Alarm device for abnormality in earthing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101046490A true CN101046490A (en) | 2007-10-03 |
Family
ID=38771256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710027822 Pending CN101046490A (en) | 2007-04-24 | 2007-04-24 | Alarm device for abnormality in earthing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101046490A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699833A (en) * | 2014-11-28 | 2016-06-22 | 青岛海尔科技有限公司 | Washing machine strong current switch reverse insertion detecting method, detecting device and washing machine |
| CN106981860A (en) * | 2017-05-04 | 2017-07-25 | 周山 | The abnormal detection guard method of ground wire, protection device and protection system |
| CN107861016A (en) * | 2017-11-12 | 2018-03-30 | 韦明肯 | One kind ground wire disconnects automatic failure alarm device |
| CN108469550A (en) * | 2017-02-23 | 2018-08-31 | 西门子公司 | Device and method for the ground lead resistance for determining charging unit |
-
2007
- 2007-04-24 CN CN 200710027822 patent/CN101046490A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699833A (en) * | 2014-11-28 | 2016-06-22 | 青岛海尔科技有限公司 | Washing machine strong current switch reverse insertion detecting method, detecting device and washing machine |
| CN105699833B (en) * | 2014-11-28 | 2018-11-27 | 青岛海尔科技有限公司 | Washing machine forceful electric power switchs anti-inserted detection method, detection device and washing machine |
| CN108469550A (en) * | 2017-02-23 | 2018-08-31 | 西门子公司 | Device and method for the ground lead resistance for determining charging unit |
| CN106981860A (en) * | 2017-05-04 | 2017-07-25 | 周山 | The abnormal detection guard method of ground wire, protection device and protection system |
| CN107861016A (en) * | 2017-11-12 | 2018-03-30 | 韦明肯 | One kind ground wire disconnects automatic failure alarm device |
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| PB01 | Publication | ||
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Open date: 20071003 |