CN203026909U - Transparent residual current circuit breaker with screen and capable of directly displaying residual current action amplitude - Google Patents
Transparent residual current circuit breaker with screen and capable of directly displaying residual current action amplitude Download PDFInfo
- Publication number
- CN203026909U CN203026909U CN 201220753356 CN201220753356U CN203026909U CN 203026909 U CN203026909 U CN 203026909U CN 201220753356 CN201220753356 CN 201220753356 CN 201220753356 U CN201220753356 U CN 201220753356U CN 203026909 U CN203026909 U CN 203026909U
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- circuit
- residual current
- circuit breaker
- leakage
- microprocessor
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Abstract
The utility model relates to a transparent residual current circuit breaker with a screen and capable of directly displaying the residual current action amplitude. The residual current circuit breaker comprises a housing composed of an insulating base and a transparent cover, wherein an electric leakage protection line, a circuit breaker main control unit and an air switch are contained in the housing; 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; a 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 transparent cover is adopted so that the line overhauling personnel can read the present breakpoint isolation state of the residual current circuit breaker quickly; and as a result, the line overhauling personnel can carry out the overhauling work quickly and safely.
Description
Technical field
The utility model relates to a kind of transparent residual current circuit breaker that can directly show the residual current acting size with screen.
Background technology
When the leakage current in circuit surpassed predetermined value, residual current circuit breaker can automatically shut down, and prevented that the person from getting an electric shock.When residual current circuit breaker detect the electric leakage and the action after, at first the line maintenance personnel will investigate the fault of residual current circuit breaker, because the contact of residual current circuit breaker itself may be in adhesion, the state that disconnects of isolation fully due to machinery consume or fault, work brings potential safety hazard to line maintenance.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art, and a kind of transparency cover that has is provided, and that can see internal insulation breakpoint state outside residual current circuit breaker can directly show the transparent residual current circuit breaker of residual current acting size with screen.
for achieving the above object, the utility model adopts a kind of so transparent residual current circuit breaker that can directly show the residual current acting size with screen, described residual current circuit breaker comprises the housing that is made of insulating base and transparency cover, described housing holds 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:
1, adopt transparency cover, make the line maintenance personnel read rapidly the current breakpoint isolation of residual current circuit breaker, be convenient to the line maintenance personnel and launch fast, safely service work.
2, 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 is analyzed judgement, in addition, microprocessor also will be exported respectively undervoltage tripping and shunted exciter tripping according to the variation of the parameters of electric power on circuit and user's demand, 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 transparent residual current circuit breaker of residual current acting size with screen of the utility model;
Fig. 2 is a kind of stereogram that can directly show the transparent residual current circuit breaker of residual current acting size with screen of the utility model;
Fig. 3 is the schematic diagram of earth leakage protective circuit in a kind of transparent residual current circuit breaker that can directly show the residual current acting size with screen of the utility model.
Embodiment
As shown in Fig. 1～2, a kind of transparent residual current circuit breaker that can directly show the residual current acting size with screen, the housing of residual current circuit breaker is formed by insulating base 1 and lid 2 closures, wherein, lid adopts transparent material to make, and makes the operator of residual current circuit breaker clearly to see the electric appliance component that holds in housing from the residual current circuit breaker outside.Housing holds 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, 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 leakage current display circuit, shunted exciter tripping circuit and undervoltage tripping circuit, and shunted exciter tripping circuit and undervoltage tripping circuit are used for controlling the opening circuit of air switch ZK.When residual current circuit breaker detects electric leakage and after action, the line maintenance personnel can see through contact cover 2 identification air switch ZK and isolate disjunction, make that service work work is faster, safety.
As shown in Figure 3; 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. transparent 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 housing that is made of insulating base and transparency cover, described housing holds 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 transparent 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 201220753356 CN203026909U (en) | 2012-12-17 | 2012-12-17 | Transparent 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 201220753356 CN203026909U (en) | 2012-12-17 | 2012-12-17 | Transparent residual current circuit breaker with screen and capable of directly displaying residual current action amplitude |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203026909U true CN203026909U (en) | 2013-06-26 |
Family
ID=48650861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220753356 Expired - Lifetime CN203026909U (en) | 2012-12-17 | 2012-12-17 | Transparent residual current circuit breaker with screen and capable of directly displaying residual current action amplitude |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203026909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113140430A (en) * | 2021-03-25 | 2021-07-20 | 国网浙江省电力有限公司湖州供电公司 | Visual type intelligent residual current operated protector of disconnection point |
-
2012
- 2012-12-17 CN CN 201220753356 patent/CN203026909U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113140430A (en) * | 2021-03-25 | 2021-07-20 | 国网浙江省电力有限公司湖州供电公司 | Visual type intelligent residual current operated protector of disconnection point |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |
|
| CX01 | Expiry of patent term |