CN204330880U - A kind of prepayment meter of on-load on off state measuring ability - Google Patents
A kind of prepayment meter of on-load on off state measuring ability Download PDFInfo
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- CN204330880U CN204330880U CN201420701299.9U CN201420701299U CN204330880U CN 204330880 U CN204330880 U CN 204330880U CN 201420701299 U CN201420701299 U CN 201420701299U CN 204330880 U CN204330880 U CN 204330880U
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- load
- payment controller
- prepayment meter
- load switch
- output terminal
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Abstract
The utility model discloses a kind of prepayment meter of on-load on off state measuring ability, comprise pre-payment controller, the output terminal of described pre-payment controller is provided with on-load switch; Described pre-payment controller connects the control end of described on-load switch by control line; The output terminal of described on-load switch connects described pre-payment controller by signal wire.Prepayment meter of the present utility model, by the voltage detecting user side, judges the "on" position of user side, thus makes prepayment meter can judge the situation of combined floodgate/separating brake failure, and then make further fault handling.
Description
Technical field
The utility model relates to prepayment meter.
Background technology
General prepayment meter all adopts the break-make of direct or indirect mode control overhead switch at present.Prepayment meter will realize controlling, the following several situation of normal chance:
(1) pre-payment control circuit damages;
(2) wiring issue of external load switch;
(3) external load switching damage;
(4) artificial destruction tripping operation control loop or tripping operation descendant close a floodgate for forcing;
The consequence brought for above several situation can cause exactly and trip unsuccessfully, and the essential function arrearage tripping operation of such prepayment meter will be affected, secondly owing to lacking point/close a floodgate and detect, point/the failed phenomenon of combined floodgate also cannot be discovered.
Whether successfully whether current portioned product exist electric current as dividing/combined floodgate foundation after dividing/closing a floodgate.Electric current is as the parameter of a dynamic change, on the one hand there is time delay in judged result, and secondly logical over-current judging just needs to set certain decision threshold, when load current be in change about decision threshold time, judged result also can change repeatedly, is in nondeterministic statement.
To sum up due to point/close a floodgate whether successfully lack on-load switch state, system cannot reflect the real electricity consumption on off operating mode of user side, also cannot divide/Closing fault by Timeliness coverage.
Summary of the invention
Problem to be solved in the utility model: the state of detection load switch, can make when on-load switch fault and processing timely.
For solving the problem, the scheme that the utility model adopts is as follows:
A prepayment meter for on-load on off state measuring ability, comprises pre-payment controller, it is characterized in that, the output terminal of described pre-payment controller is provided with on-load switch; Described pre-payment controller connects the control end of described on-load switch by control line; The output terminal of described on-load switch connects described pre-payment controller by signal wire.
Further, described signal wire is provided with protective resistance.
Technique effect of the present utility model is as follows: the utility model passes through at user side, the output terminal of i.e. on-load switch detects voltage, and then can judge whether current loads switch can normally work, the problem of Timeliness coverage combined floodgate separating brake failure, facilitates prepayment meter to process further fault.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further details.
A prepayment meter for on-load on off state measuring ability, as shown in Figure 1, comprises pre-payment controller C.Pre-payment controller C is parts main in prepayment meter, is connected between the energization input of electric energy meter and user's output terminal, controls the charging of user power utilization and energising for realizing.Energization input and user's output terminal comprise live wire L and zero line N.The output terminal of pre-payment controller C is provided with on-load switch K.On-load switch K is electronically controlled isolating switch, and this isolating switch comprises three interfaces: input end, output terminal and control end.Wherein, the input end of on-load switch K connects the output terminal of pre-payment controller C, and the output terminal of on-load switch K is user side, connects the consumer in family.The control end of on-load switch K connects pre-payment controller C.Pre-payment controller C thus can the switch of control overhead K switch, realizes the action of combined floodgate separating brake.Pre-payment controller C is connected by signal wire at the live wire of the output terminal of on-load switch K.Signal wire is connected with protective resistance R.Pre-payment controller C thus can the output voltage of detection load K switch output terminal.
Principle of work of the present utility model is as follows, and pre-payment controller C can the voltage of detection load K switch output terminal by signal wire, namely detects the voltage of user side.If pre-payment controller C is by after control line control overhead K switch separating brake, and user side live wire also has voltage show that on-load switch K breaks down; If after pre-payment controller C is closed a floodgate by control line control overhead K switch, and the undertension on user side live wire shows that on-load switch K breaks down.
Claims (2)
1. a prepayment meter for on-load on off state measuring ability, comprises pre-payment controller, it is characterized in that, the output terminal of described pre-payment controller is provided with on-load switch; Described pre-payment controller connects the control end of described on-load switch by control line; The output terminal of described on-load switch connects described pre-payment controller by signal wire.
2. the prepayment meter of on-load on off state measuring ability as claimed in claim 1, it is characterized in that, described signal wire is provided with protective resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420701299.9U CN204330880U (en) | 2014-11-21 | 2014-11-21 | A kind of prepayment meter of on-load on off state measuring ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420701299.9U CN204330880U (en) | 2014-11-21 | 2014-11-21 | A kind of prepayment meter of on-load on off state measuring ability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204330880U true CN204330880U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420701299.9U Active CN204330880U (en) | 2014-11-21 | 2014-11-21 | A kind of prepayment meter of on-load on off state measuring ability |
Country Status (1)
| Country | Link |
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| CN (1) | CN204330880U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093759A (en) * | 2016-05-31 | 2016-11-09 | 国网河北省电力公司电力科学研究院 | Method for detecting driving capability of external load switch for electric energy meter |
-
2014
- 2014-11-21 CN CN201420701299.9U patent/CN204330880U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093759A (en) * | 2016-05-31 | 2016-11-09 | 国网河北省电力公司电力科学研究院 | Method for detecting driving capability of external load switch for electric energy meter |
| CN106093759B (en) * | 2016-05-31 | 2018-10-19 | 国网河北省电力公司电力科学研究院 | Method for detecting driving capability of external load switch for electric energy meter |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |