CN2703349Y - Leakage circuit breaker with warning device - Google Patents
Leakage circuit breaker with warning device Download PDFInfo
- Publication number
- CN2703349Y CN2703349Y CN 200420020679 CN200420020679U CN2703349Y CN 2703349 Y CN2703349 Y CN 2703349Y CN 200420020679 CN200420020679 CN 200420020679 CN 200420020679 U CN200420020679 U CN 200420020679U CN 2703349 Y CN2703349 Y CN 2703349Y
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- circuit breaker
- warning device
- circuit
- leakage
- spdt
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Abstract
The utility model relates to a leakage circuit breaker with a warning device, relating to the technical field of the low-voltage electrical apparatus, comprising a null sequence mutual-inductor signal measurement circuit, a leaking current identifying comparing circuit and a tripping device. The null sequence mutual-inductor signal measurement circuit is connected with the leaking current identifying comparing circuit. The leaking current identifying comparing circuit is connected with the tripping device. The utility model is characterized in that the rear end of the leaking current identifying comparing circuit is connected and provided with a conversion selective switch SW-SPDT and the conversion selective switch SW-SPDT is connected with a warning device circuit and the tripping device. The leakage circuit breaker has three functions for selecting that firstly the leakage circuit breaker only trips operation, cuts off and does not warn, secondly the leakage circuit breaker only warns and does not trip operation and cut off and thirdly the leakage circuit breaker trips operation, cuts offas well as warns. The user can select as required. When the value of the leaking current exceeds the operating value of the rated leakage, the circuit breaker warns or automatically trips operation or warns as well as trips operation, solves the problem existing in the prior art and avoids causing the accident, the fatal damage and the bad social influence.
Description
Technical field
The utility model relates to the low voltage electrical apparatus technology field, is specially the residual current circuit breaker of band warning device.
Background technology
At present the earth leakage protective characteristics of residual current circuit breaker are: when the leakage current value of institute's protective circuit surpassed the specified electric leakage operating value of residual current circuit breaker, residual current circuit breaker was cut off the electricity supply automatic trip, the safety of the protection person and equipment.But along with society and expanding economy, people require strong day by day to the continuity of power supply, in a single day have a power failure in some occasion, will cause the accident or heavy economic losses and bad social influence, even when this moment, leakage current value surpassed the specified electric leakage operating value of residual current circuit breaker, do not allow automatic trip to have a power failure yet.How solving this contradiction is the purpose of this utility model place.
The utility model content
In order to address the above problem, the utility model is set up warning device on the basis of original residual current circuit breaker, and design provides a kind of technical scheme of the residual current circuit breaker with warning device.
The residual current circuit breaker of described band warning device, comprise zero-sequence transformer circuitry for signal measurement, leakage current discriminating comparison circuit, trip gear, described zero-sequence transformer circuitry for signal measurement differentiates that with leakage current comparison circuit is connected, leakage current differentiates that comparison circuit is connected with trip gear, it is characterized in that the rear end connection of leakage current discriminating comparison circuit is provided with conversion selecting switch SW-SPDT, conversion selecting switch SW-SPDT and warning device circuit, trip gear join.
Conversion selecting switch SW-SPDT and warning device on the residual current circuit breaker of described band warning device have three kinds of function selecting: the first, and only tripping operation has a power failure, does not report to the police; The second, only warning, the power failure of not tripping; The 3rd, not only having tripped has a power failure but also reports to the police.The user can select as required, when leakage current value surpasses specified electric leakage operating value, residual current circuit breaker or send warning or automatic trip or not only report to the police but also trip has solved problems of the prior art, avoids causing the accident and heavy losses and bad social influence.
Description of drawings
Fig. 1 is the circuit block diagram of the residual current circuit breaker of band warning device;
Fig. 2 is the circuit theory diagrams of the residual current circuit breaker of band warning device.
Embodiment
As shown in the figure, the residual current circuit breaker of band warning device, comprise zero-sequence transformer circuitry for signal measurement, leakage current discriminating comparison circuit, trip gear, described zero-sequence transformer circuitry for signal measurement differentiates that with leakage current comparison circuit is connected, leakage current differentiates that the connection of comparison circuit rear end is provided with conversion selecting switch SW-SPDT, and conversion selecting switch SW-SPDT and warning device circuit, trip gear join.The zero-sequence transformer circuitry for signal measurement is formed by connecting by instrument transformer T2, capacitor C1, resistance R 2; Leakage current differentiates that comparison circuit is formed by connecting by diode D1, capacitor E1, thyratron transistor Q1; The warning device circuit is made of luminous warning branch road, sounding alarm branch road, route luminous tube D3 is propped up in luminous warning, resistance R 5 is formed by connecting, sounding alarm props up route buzzer LS, resistance R 6, capacitor E3 composition, buzzer LS is connected with resistance R 6, and capacitor E3 is connected with buzzer LS, resistance R 6.The built-in remote signal contact of tripping operation power down mode LTXD is set between trip gear and the conversion selecting switch SW-SPDT, the built-in remote signal contact of sound and light alarm state LEDLSTXD is set between warning device circuit and the conversion selecting switch SW-SPDT, is used to connect other related control device or carries out remote alarms to Surveillance center.Overvoltage crowbar is connected and composed by diode D2, voltage-stabiliser tube Z1, capacitor E2, resistance R 3, R4.Overvoltage crowbar and leakage current differentiate comparison circuit connection, bridge rectifier B1 and piezo-resistance R7 to be connected being connected of setting, tripping coil L and K switch, test resistance R1 and switch S 1 all identical with original circuit breaker; for general known technology, do not repeat them here.When the signal of importing is big inadequately, need between zero-sequence transformer circuitry for signal measurement and leakage current discriminating comparison circuit, connect signal amplification circuit, also belong to general known technology.Residual current circuit breaker also is a residual current action breaker.
Conversion selecting switch SW-SPDT can be arranged on the panel of circuit breaker, and the user can select as required.In order to reflect the situation of leakage current in real time, leakage current table and/or leakage current indicator light also can be set on the panel of circuit breaker, also the chip with leakage current store recording function can be set, so that leakage current is checked, analyzed and adds up.The residual current circuit breaker of this band warning device can be differentiated the setting of comparison circuit by leakage current, and during less than specified electric leakage operating value, warning device only sends warning in leakage current value, and the prompting user fixes a breakdown.This warning device also can be used for other Aftercurrent protecting equipment, as leakage current relay, leakage comprehensive protector etc.
Claims (6)
1. be with the residual current circuit breaker of warning device, comprise zero-sequence transformer circuitry for signal measurement, leakage current discriminating comparison circuit, trip gear, described zero-sequence transformer circuitry for signal measurement differentiates that with leakage current comparison circuit is connected, leakage current differentiates that comparison circuit is connected with trip gear, it is characterized in that the rear end connection of leakage current discriminating comparison circuit is provided with conversion selecting switch SW-SPDT, conversion selecting switch SW-SPDT and warning device circuit, trip gear join.
2. the residual current circuit breaker of band warning device as claimed in claim 1 is characterized in that the warning device circuit is made of luminous warning branch road, sounding alarm branch road.
3. the residual current circuit breaker of band warning device as claimed in claim 1 is characterized in that being provided with between trip gear and the conversion selecting switch SW-SPDT the built-in remote signal contact of tripping operation power down mode LTXD.
4. the residual current circuit breaker of band warning device as claimed in claim 1 is characterized in that being provided with between warning device circuit and the conversion selecting switch SW-SPDT the built-in remote signal contact of sound and light alarm state LEDLSTXD.
5. the residual current circuit breaker of band warning device as claimed in claim 2 is characterized in that route luminous tube D3 is propped up in luminous warning, resistance R 5 is formed by connecting.
6. the residual current circuit breaker of band warning device as claimed in claim 2 is characterized in that sounding alarm props up route buzzer LS, resistance R 6, capacitor E3 composition, and buzzer LS is connected with resistance R 6, and capacitor E3 is connected with buzzer LS, resistance R 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020679 CN2703349Y (en) | 2004-03-09 | 2004-03-09 | Leakage circuit breaker with warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020679 CN2703349Y (en) | 2004-03-09 | 2004-03-09 | Leakage circuit breaker with warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2703349Y true CN2703349Y (en) | 2005-06-01 |
Family
ID=34769764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420020679 Expired - Fee Related CN2703349Y (en) | 2004-03-09 | 2004-03-09 | Leakage circuit breaker with warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2703349Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100437646C (en) * | 2006-04-04 | 2008-11-26 | 浙江正泰电器股份有限公司 | Alarm-only non-shut-brake electric leakage alarming module of electric leakage circuit breaker |
| CN100559677C (en) * | 2006-12-28 | 2009-11-11 | 人民电器集团有限公司 | The over-current protection system of circuit breaker and method of work thereof |
| CN104792944A (en) * | 2015-05-06 | 2015-07-22 | 柴俊沙 | Chlorine gas detection and alarm device |
| CN110007175A (en) * | 2019-04-17 | 2019-07-12 | 北京电子工程总体研究所 | A kind of test device |
| CN115206743A (en) * | 2022-08-26 | 2022-10-18 | 天津加美特电气股份有限公司 | Electromagnetic leakage circuit breaker adopting leakage current relay to replace EMR |
-
2004
- 2004-03-09 CN CN 200420020679 patent/CN2703349Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100437646C (en) * | 2006-04-04 | 2008-11-26 | 浙江正泰电器股份有限公司 | Alarm-only non-shut-brake electric leakage alarming module of electric leakage circuit breaker |
| CN100559677C (en) * | 2006-12-28 | 2009-11-11 | 人民电器集团有限公司 | The over-current protection system of circuit breaker and method of work thereof |
| CN104792944A (en) * | 2015-05-06 | 2015-07-22 | 柴俊沙 | Chlorine gas detection and alarm device |
| CN110007175A (en) * | 2019-04-17 | 2019-07-12 | 北京电子工程总体研究所 | A kind of test device |
| CN115206743A (en) * | 2022-08-26 | 2022-10-18 | 天津加美特电气股份有限公司 | Electromagnetic leakage circuit breaker adopting leakage current relay to replace EMR |
| CN115206743B (en) * | 2022-08-26 | 2024-03-22 | 天津加美特电气股份有限公司 | Electromagnetic leakage circuit breaker adopting leakage current relay to replace EMR |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Huahang Electronic & Electtric Apparatus Co., Ltd. Assignor: Xie Huayue Contract fulfillment period: 2008.7.20 to 2014.3.8 Contract record no.: 2008330000913 Denomination of utility model: Leakage circuit breaker with warning device Granted publication date: 20050601 License type: Exclusive license Record date: 20081008 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.7.20 TO 2014.3.8; CHANGE OF CONTRACT Name of requester: HANGZHOU HUAHANG ELECTRONICS CO., LTD. Effective date: 20081008 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050601 Termination date: 20130309 |