CN203026908U - Residual current circuit breaker with screen and capable of directly displaying residual current action amplitude - Google Patents
Residual current circuit breaker with screen and capable of directly displaying residual current action amplitude Download PDFInfo
- Publication number
- CN203026908U CN203026908U CN 201220753351 CN201220753351U CN203026908U CN 203026908 U CN203026908 U CN 203026908U CN 201220753351 CN201220753351 CN 201220753351 CN 201220753351 U CN201220753351 U CN 201220753351U CN 203026908 U CN203026908 U CN 203026908U
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- circuit
- residual current
- leakage
- circuit breaker
- microprocessor
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Abstract
The utility model relates to a residual current circuit breaker with a screen and capable of directly displaying the residual current action amplitude. The residual current circuit breaker comprises an electric leakage protection line, a circuit breaker main control unit and an air switch, wherein the circuit breaker main control unit comprises an electric leakage sensor, a microprocessor, a leakage current display circuit, a shunt trip circuit and an undervoltage trip circuit; the secondary end of the electric leakage sensor is connected to an input end of the microprocessor through a leakage current sampling circuit; an output end of the microprocessor is used for driving the leakage current display circuit, the shunt trip circuit and the undervoltage trip circuit; and the shunt trip circuit and the undervoltage trip circuit are used for controlling the closing circuit of the air switch. The independent electric leakage sensor is adopted and used for detecting three-phase leakage currents and displaying the three-phase leakage currents in real time, respectively; therefore, the user can read the leakage current value conveniently so as to analyze and judge the electric leakage fault; besides, the microprocessor further outputs undervoltage trip and shunt trip according to the change of power parameters on the line and the requirements of the user, respectively; and as a result, the residual current circuit breaker is flexible to use.
Description
Technical field
The utility model relates to a kind of residual current circuit breaker that can directly show the residual current acting size with screen.
Background technology
According to the demand of electrical safety, residual current circuit breaker needs multiple power failure is made a response respectively.Existing residual current circuit breaker generally only has the earth leakage protective circuit, when namely only the leakage current in circuit surpasses predetermined value, and automatic lockout switch.This simple electric leakage is turn-offed, and makes the function singleness of residual current circuit breaker, uses to lack flexibility.In addition, when finding electric leakage, owing to lacking the real time data that is used for intuitively accident analysis, work is made troubles to line maintenance.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art, a kind of leakage current display circuit that has is provided, be convenient to accident analysis and maintenance, and support multiple breaking function can directly show the residual current circuit breaker of residual current acting size with flexible reply power failure with screen.
for achieving the above object, the utility model adopts a kind of like this residual current circuit breaker that can directly show the residual current acting size with screen, described residual current circuit breaker comprises the earth leakage protective circuit, circuit breaker main control unit and air switch, described circuit breaker main control unit comprises electricity leakage sensor, microprocessor, the leakage current display circuit, shunted exciter tripping circuit and undervoltage tripping circuit, the secondary terminals of described electricity leakage sensor is connected to the input of described microprocessor through the leakage current sample circuit, the output of described microprocessor is used for driving described leakage current display circuit, described shunted exciter tripping circuit and described undervoltage tripping circuit, described shunted exciter tripping circuit and described undervoltage tripping circuit are used for controlling the opening circuit of described air switch.
Especially; described earth leakage protective circuit comprises earth leakage protective application-specific integrated circuit (ASIC), controllable silicon and electric leakage coil; the output of described earth leakage protective application-specific integrated circuit (ASIC) is connected to described silicon controlled trigger end; described controllable silicon is used for controlling the opening circuit of described air switch with the output that is connected to rectifier bridge after resistance, described electric leakage coil are connected, described electric leakage coil.
Compared with the prior art, the beneficial effects of the utility model are embodied in: adopt independently electricity leakage sensor, be used for the detection of three phase current leakage, and three phase current leakage is shown respectively in real time, the user can read leakage current numerical value very conveniently, with this, leak current fault is done and analyzed judgement, in addition, microprocessor also will be according to the variation of the parameters of electric power on circuit and user's demand, export respectively undervoltage tripping and shunted exciter tripping, integrate multiple breaking function, applying flexible has improved the satisfaction that the user uses widely.
Description of drawings
Fig. 1 is a kind of principle block diagram that can directly show the residual current circuit breaker of residual current acting size with screen of the utility model;
Fig. 2 is the schematic diagram of earth leakage protective circuit in a kind of residual current circuit breaker that can directly show the residual current acting size with screen of the utility model.
Embodiment
as shown in Figure 1, a kind of residual current circuit breaker that can directly show the residual current acting size with screen, residual current circuit breaker comprises the earth leakage protective circuit, circuit breaker main control unit and air switch ZK, the circuit breaker main control unit comprises electricity leakage sensor TC, microprocessor, the leakage current display circuit, shunted exciter tripping circuit and undervoltage tripping circuit, the secondary terminals of electricity leakage sensor TC is connected to the input of microprocessor through the leakage current sample circuit, the output of microprocessor is used for driving the leakage current display circuit, shunted exciter tripping circuit and undervoltage tripping circuit, shunted exciter tripping circuit and undervoltage tripping circuit are used for controlling the opening circuit of air switch ZK.
As shown in Figure 2; the earth leakage protective circuit comprises earth leakage protective application-specific integrated circuit (ASIC) U1, controllable silicon SCR and electric leakage coil L1; the output of earth leakage protective application-specific integrated circuit (ASIC) U1 is connected to the trigger end of controllable silicon SCR; be connected to the output of rectifier bridge BG after controllable silicon SCR and resistance R 5, electric leakage coil L1 connects, electric leakage coil L1 is used for the opening circuit of control air switch ZK.
Claims (2)
1. residual current circuit breaker that can directly show the residual current acting size with screen, it is characterized in that: described residual current circuit breaker comprises the earth leakage protective circuit, circuit breaker main control unit and air switch, described circuit breaker main control unit comprises electricity leakage sensor, microprocessor, the leakage current display circuit, shunted exciter tripping circuit and undervoltage tripping circuit, the secondary terminals of described electricity leakage sensor is connected to the input of described microprocessor through the leakage current sample circuit, the output of described microprocessor is used for driving described leakage current display circuit, described shunted exciter tripping circuit and described undervoltage tripping circuit, described shunted exciter tripping circuit and described undervoltage tripping circuit are used for controlling the opening circuit of described air switch.
2. the residual current circuit breaker that can directly show the residual current acting size with screen according to claim 1; it is characterized in that: described earth leakage protective circuit comprises earth leakage protective application-specific integrated circuit (ASIC), controllable silicon and electric leakage coil; the output of described earth leakage protective application-specific integrated circuit (ASIC) is connected to described silicon controlled trigger end; described controllable silicon is used for controlling the opening circuit of described air switch with the output that is connected to rectifier bridge after resistance, described electric leakage coil are connected, described electric leakage coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220753351 CN203026908U (en) | 2012-12-17 | 2012-12-17 | Residual current circuit breaker with screen and capable of directly displaying residual current action amplitude |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220753351 CN203026908U (en) | 2012-12-17 | 2012-12-17 | Residual current circuit breaker with screen and capable of directly displaying residual current action amplitude |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203026908U true CN203026908U (en) | 2013-06-26 |
Family
ID=48650860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220753351 Expired - Fee Related CN203026908U (en) | 2012-12-17 | 2012-12-17 | Residual current circuit breaker with screen and capable of directly displaying residual current action amplitude |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203026908U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376968A (en) * | 2018-01-12 | 2018-08-07 | 南京捷泰电力设备有限公司 | The earth leakage protective device of household and similar applications with creepage protection function ESC Escape |
-
2012
- 2012-12-17 CN CN 201220753351 patent/CN203026908U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376968A (en) * | 2018-01-12 | 2018-08-07 | 南京捷泰电力设备有限公司 | The earth leakage protective device of household and similar applications with creepage protection function ESC Escape |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20191217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |