CN202025406U - Residual current type electric fire monitoring detector - Google Patents
Residual current type electric fire monitoring detector Download PDFInfo
- Publication number
- CN202025406U CN202025406U CN2011201637339U CN201120163733U CN202025406U CN 202025406 U CN202025406 U CN 202025406U CN 2011201637339 U CN2011201637339 U CN 2011201637339U CN 201120163733 U CN201120163733 U CN 201120163733U CN 202025406 U CN202025406 U CN 202025406U
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- current signal
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Abstract
The utility model relates to a residual current type electric fire monitoring detector comprising a central control unit, a current signal collection unit, a liquid crystal screen, a control output interface and a keyboard, wherein the current signal collection unit is used for monitoring a three-phase current signal and a residual current signal of a controlled loop at real time, the liquid crystal screen is used for displaying the three-phase current value, the residual current value, early warning information and warning information at real time, the control output interface is used for being connected with a tripping device arranged in the controlled loop, and the keyboard is used for realizing the functions of self checking and resetting. According to the monitoring detector disclosed by the utility model, various functions of overcurrent, residual current, early warning, warning, control, communication and the like are integrated into a whole; and moreover, the residual current type electric fire monitoring detector has intellectualized analyzing capability. When an electric accident occurs in power supply equipment, the monitoring detector can emit warning sound to remind working personnel of checking a fault in time, the electric hidden danger which is possible to occur is eliminated, and the occurrence of the accident is prevented.
Description
Technical field
The utility model relates to a kind of residual-current electrical fire monitoring detector.
Background technology
The electric short circuit fire is that the electric arc short circuit causes mostly, because electric arc easily causes the contact oxidation, had very big impedance and voltage drop by the highly oxidized contact, it has limited fault current, make over-current protection electrical equipment often be failure to actuate or can not in time move and cut off the electricity supply, the localized hyperthermia of several amperes electric arc can be up to 2000～4000 ℃, and near the combustible being enough to ignite is on fire, and the electric leakage of electric wiring or electrical equipment is to cause electric arc short circuit most important reason.Electrical fire for pre-arc protection short circuit causes is provided with the residual current acting electric fire monitoring system in the places such as public building big at some fire risks, that personnel are intensive and fire damage is big, electric wiring is complicated and industrial building and just seems very important.Existing RCD can not carry out in real time and remote monitoring, gives the hidden danger of having brought safe in utilization.
The utility model content
Technical problem to be solved in the utility model provides a kind of simple in structure, the residual-current electrical fire monitoring detector that can monitor in real time whether residual current transfinites and report to the police when transfiniting.
For solving the problems of the technologies described above, the utility model provides a kind of residual-current electrical fire monitoring detector, comprise: central control unit, being used for of linking to each other with the current signal input end of central control unit monitored the three-phase current signal of controlled loop and the current signal collecting unit of residual current signal in real time, being used for of linking to each other with central control unit shows the three-phase electricity flow valuve in real time, the residual electricity flow valuve, the liquid crystal display of early warning information and warning message, being used for of linking to each other with central control unit is connected at the control output interface of the electrical apparatus release of described controlled loop, the keyboard that is used to realize self check and reset function that links to each other with central control unit.
Described central control unit is connected with the communication interface that is used to connect host computer.
Described central control unit is connected with and is used in described three-phase electricity flow valuve, the LED indication of pointing out when the residual electricity flow valuve reaches corresponding preset value respectively and voice alarm circuit.
Described current signal collecting unit has the current signal input end that is used to connect threephase current transformer and residual current transformer.
Described communication interface is CAN communication interface or RS-485 communication interface.
Described control output interface is the RS-232 communication interface.
The utlity model has positive effect: residual-current electrical fire monitoring detector of the present utility model integrates multiple functions such as excess current, residual current, early warning, warning, control and communication, and the novel electrical safety equipment with intelligent analysis ability.When power-supply unit generation electrical hazard, monitoring detector can send chimes of doom, in time reminds the staff to check fault, gets rid of contingent electric hidden danger, and the accident that prevents takes place.
Description of drawings
Fig. 1 is the structured flowchart of the residual-current electrical fire monitoring detector of embodiment 1;
Fig. 2 is the electrical block diagram that current signal collecting unit and the threephase current transformer among Fig. 1 links to each other with residual current transformer.
Embodiment
See Fig. 1-2, the residual-current electrical fire monitoring detector of present embodiment comprises: central control unit 6, being used for of linking to each other with the current signal input end of central control unit 6 monitored the three-phase current signal of controlled loop and the current signal collecting unit 5 of residual current signal in real time, being used for of linking to each other with central control unit 6 shows the three-phase electricity flow valuve in real time, the residual electricity flow valuve, the liquid crystal display 9 of early warning information and warning message, being used for of linking to each other with central control unit 6 is connected at the control output interface 4 of the electrical apparatus release of described controlled loop, the keyboard 7 that is used to realize self check and reset function that links to each other with central control unit 6.For realizing long-range dimension management, safeguarding and control that described central control unit 6 is connected with the communication interface 8 that is used to connect host computer 1.
Described central control unit 6 is connected with and is used in described three-phase electricity flow valuve, the LED indication of pointing out when the residual electricity flow valuve reaches corresponding preset value respectively and voice alarm circuit 3.
Described current signal collecting unit 5 has the current signal input end that is used to connect threephase current transformer and residual current transformer.Described communication interface 8 is CAN communication interface or RS-485 communication interface.Described control output interface 4 is the RS-232 communication interface.
Claims (6)
1. residual-current electrical fire monitoring detector, it is characterized in that comprising: central control unit, being used for of linking to each other with the current signal input end of central control unit monitored the three-phase current signal of controlled loop and the current signal collecting unit of residual current signal in real time, being used for of linking to each other with central control unit shows the three-phase electricity flow valuve in real time, the residual electricity flow valuve, the liquid crystal display of early warning information and warning message, being used for of linking to each other with central control unit is connected at the control output interface of the electrical apparatus release of described controlled loop, the keyboard that is used to realize self check and reset function that links to each other with central control unit.
2. residual-current electrical fire monitoring detector according to claim 1 is characterized in that: described central control unit is connected with the communication interface that is used to connect host computer.
3. residual-current electrical fire monitoring detector according to claim 2 is characterized in that: described central control unit is connected with and is used in described three-phase electricity flow valuve, the LED indication of pointing out when the residual electricity flow valuve reaches corresponding preset value respectively and voice alarm circuit.
4. residual-current electrical fire monitoring detector according to claim 3 is characterized in that: described current signal collecting unit has the current signal input end that is used to connect threephase current transformer and residual current transformer.
5. residual-current electrical fire monitoring detector according to claim 4 is characterized in that: described communication interface is CAN communication interface or RS-485 communication interface.
6. residual-current electrical fire monitoring detector according to claim 5 is characterized in that: described control output interface is the RS-232 communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201637339U CN202025406U (en) | 2011-05-19 | 2011-05-19 | Residual current type electric fire monitoring detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201637339U CN202025406U (en) | 2011-05-19 | 2011-05-19 | Residual current type electric fire monitoring detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202025406U true CN202025406U (en) | 2011-11-02 |
Family
ID=44850350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201637339U Expired - Fee Related CN202025406U (en) | 2011-05-19 | 2011-05-19 | Residual current type electric fire monitoring detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202025406U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904614A (en) * | 2014-04-11 | 2014-07-02 | 邵阳卫士消防监控技术开发有限公司 | Voltage drop method detection technology for electrical fire prevention and control |
| CN109856509A (en) * | 2018-12-11 | 2019-06-07 | 西安华瑞网电科技股份有限公司 | A kind of online prevention and control device of three phase isolated formula electrical fire and method of effective grounding |
| CN113419103A (en) * | 2021-07-29 | 2021-09-21 | 广东电网有限责任公司 | Electrical fire early warning system and method for transformer for station |
-
2011
- 2011-05-19 CN CN2011201637339U patent/CN202025406U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904614A (en) * | 2014-04-11 | 2014-07-02 | 邵阳卫士消防监控技术开发有限公司 | Voltage drop method detection technology for electrical fire prevention and control |
| CN109856509A (en) * | 2018-12-11 | 2019-06-07 | 西安华瑞网电科技股份有限公司 | A kind of online prevention and control device of three phase isolated formula electrical fire and method of effective grounding |
| CN109856509B (en) * | 2018-12-11 | 2021-08-17 | 西安华瑞网电科技股份有限公司 | Effectively-grounded three-phase insulation type electric fire online prevention and control device and method |
| CN113419103A (en) * | 2021-07-29 | 2021-09-21 | 广东电网有限责任公司 | Electrical fire early warning system and method for transformer for station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20120519 |