CN203688712U - Low-voltage power distribution branch identification device - Google Patents
Low-voltage power distribution branch identification device Download PDFInfo
- Publication number
- CN203688712U CN203688712U CN201420002688.2U CN201420002688U CN203688712U CN 203688712 U CN203688712 U CN 203688712U CN 201420002688 U CN201420002688 U CN 201420002688U CN 203688712 U CN203688712 U CN 203688712U
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- resistance
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- identification device
- distribution branch
- test lead
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- Expired - Fee Related
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- 238000009434 installation Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 2
- KYIKRXIYLAGAKQ-UHFFFAOYSA-N abcn Chemical compound C1CCCCC1(C#N)N=NC1(C#N)CCCCC1 KYIKRXIYLAGAKQ-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model relates to a low-voltage power distribution branch identification device. The device is characterized in that the device comprises a switch triode (T). The base electrode of the switch triode (T) is in serial connection with a second resistor (R2) and then is connected with the first test end (T1). A second test end (T2) is directly connected with a direct current power supply anode. The emitter of the switch triode (T) is directly connected to the direct current power supply anode, and the collector of the switch triode (T) is connected to a direct current power supply cathode through a fourth resistor (R4) and a device power supply master switch (K) which are connected in series. The device also comprises a fifth resistor (R5) and a red light emitting diode (Dr) which are connected in series and then are in parallel connection with the fourth resistor (R4). The utility model provides the low-voltage power distribution branch identification device, the device is in parallel connection with two ends of a load, and a fact that whether electric equipment goes through an electric energy meter or not can be judged according to the light indication of the device.
Description
Technical field
The utility model relates to a kind of low-voltage distribution branch road identification device.
Background technology
In 220V low-voltage equipment power utility check, find to utilize the situation of contactor stealing, specifically: contactor coil process electric energy meter, its contact are around getting over electric power meter; In the time disconnecting the total power switch of electric energy meter outlet, contactor coil loses excitation, and contactor contact disconnects load; Observe by long-term follow, payload and monthly electric weight are not inconsistent, and because service wire is that concealed wire is installed and room is all fitted up, are difficult for judgement and check, cannot collect evidence, bring very large difficulty to power utility check, cause power loss.
Utility model content
The purpose of this utility model is to provide a kind of low-voltage distribution branch road identification device, can judge whether consumer has passed through electric energy meter.
A kind of low-voltage distribution branch road identification device, its special feature is: comprise switch triode, the base stage of this switch triode connects the first test lead after connecting with the second resistance, and the second test lead directly connects a DC power anode, the emitter of aforementioned switches triode directly connects this DC power anode, and its collector connects this DC power cathode by the 4th resistance and the installation's power source master switch of series connection; Also comprise the 5th resistance and red light emitting diodes, these both in parallel with aforementioned the 4th resistance after connecting, and the 6th resistance and green LED, these both connect after its two ends be connected with collector, the DC power anode of aforementioned switches triode respectively; Also comprise the 3rd resistance and the first diode, these both connect after its two ends be connected with the second resistance, installation's power source master switch respectively.
Wherein between the second test lead and the second resistance, be in series with the first resistance and the second button.
Wherein between the first test lead and the second resistance, be in series with white light-emitting diode and the 7th resistance, and be also parallel with the first button at the two ends of this white light-emitting diode and the 7th resistance.
The utility model provides a kind of low-voltage distribution branch road identification device, by this device access in parallel load two ends, can judge whether this consumer has passed through electric energy meter, and this apparatus structure is simple, easy to use, with low cost according to device lamplight pointing.In device circuit of the present utility model, only adopt the common components such as resistance, electric capacity, triode, diode, easily realization, simple in structure, cheap.
Accompanying drawing explanation
Accompanying drawing 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, the utility model is a kind of low-voltage distribution branch road identification device, comprise switch triode T, the base stage of this switch triode T meets the first test lead T1 after connecting with the second resistance R 2, and the second test lead T2 directly connects a DC power anode, the emitter of aforementioned switches triode T directly connects this DC power anode, and its collector connects this DC power cathode by the 4th resistance R 4 and the installation's power source master switch K of series connection; Also comprise the 5th resistance R 5 and red light emitting diodes Dr, these both in parallel with aforementioned the 4th resistance R 4 after connecting, and the 6th resistance R 6 and green LED Dg, these both connect after its two ends be connected with collector, the DC power anode of aforementioned switches triode T respectively; Also comprise the 3rd resistance R 3 and the first diode D1, these both connect after its two ends be connected with the second resistance R 2, installation's power source master switch K respectively; Yellow light-emitting diode D4 and the 6th resistance R 6, power supply E are connected on a bit upper, and the other end is connected on the one-level of charge port.
Wherein between the second test lead T2 and the second resistance R 2, be in series with the first resistance R 1 and the second button AN2, between the first test lead T1 and the second resistance R 2, be in series with in addition white light-emitting diode Dw and the 7th resistance R 7, and be also parallel with the first button AN1 at the two ends of this white light-emitting diode Dw and the 7th resistance R 7.
Working power in the utility model device adopts 3-3.7V direct supply as working power, the first diode D1 is buck diode, be, after 4.8 Ω connect the second button AN2, to keep red light emitting diodes Dr to light thereby the 3rd resistance R 3 is 5.0 Ω, the first resistance R 1.Components and parts are pressed the schematic diagram wiring of accompanying drawing 1.
The principle of work of the utility model device is as follows:
Working power in the utility model device adopts 3-3.7V direct supply as working power, and the first diode D1 is buck diode, and the 3rd resistance R 3 is 5.0 Ω; Triode T saturation conduction after the installation's power source K switch of closing, red light emitting diodes Dg conducting is lighted; Between the first test lead T1 and the second test lead T2, meet access 4.8 Ω resistance (determining according to " power supply and business rules " Article 8), press the first button AN1, after connection, red light emitting diodes Dr should keep lighting constant; The first test lead T1 and the second test lead T2 short circuit, press the first button AN1, after connection, and triode T cut-off, green LED Dg conducting is lighted.Components and parts are pressed accompanying drawing 1 wiring.
The branch road of differentiating must carry out under power down mode, first disconnect the total power switch of electric energy meter, the first test lead T1 of input end test pencil and the second test lead T2 are connected across the branch road load switch power side that will differentiate, carry out electrical verification, branch road has voltage, white light-emitting diode Dw conducting is lighted, and this branch road, must this device of shut-down operation directly around having got over electric energy meter.
If branch road no-voltage, not conducting of white light-emitting diode Dw is not lighted, in the total power switch load-side of its electric energy meter by ABCN line shorting stub short circuit, the first test lead T1 and the second test lead T2 of input end test pencil are connected across the branch road that will differentiate, installation's power source master switch K closes, the first test lead T1 of input end test pencil and the second test lead T2 are equivalent to open circuit, switch triode T saturation conduction, red light emitting diodes Dr conducting, red light is lighted, now press the first button AN1, red light emitting diodes Dr keeps conducting to light, illustrate this branch road by contacts of contactor around having got over electric energy meter, there is stealing electricity phenomenon, if otherwise pressing the first button AN1, the first test lead T1 and the second test lead T2 of input end test pencil are equivalent to short circuit, switch triode T saturation conduction, red light emitting diodes Dr cut-off does not work, green LED Dg conducting, green light is lighted, and this branch road is around getting over electric energy meter.
Claims (3)
1. a low-voltage distribution branch road identification device, it is characterized in that: comprise switch triode (T), the base stage of this switch triode (T) connects the first test lead (T1) after connecting with the second resistance (R2), and the second test lead (T2) directly connects a DC power anode, the emitter of aforementioned switches triode (T) directly connects this DC power anode, and its collector connects this DC power cathode by the 4th resistance (R4) and the installation's power source master switch (K) of series connection; Also comprise the 5th resistance (R5) and red light emitting diodes (Dr), these both in parallel with aforementioned the 4th resistance (R4) after connecting, and the 6th resistance (R6) and green LED (Dg), these both connect after its two ends be connected with collector, the DC power anode of aforementioned switches triode (T) respectively; Also comprise the 3rd resistance (R3) and the first diode (D1), these both connect after its two ends be connected with the second resistance (R2), installation's power source master switch (K) respectively.
2. low-voltage distribution branch road identification device as claimed in claim 1, is characterized in that: wherein between the second test lead (T2) and the second resistance (R2), be in series with the first resistance (R1) and the second button (AN2).
3. low-voltage distribution branch road identification device as claimed in claim 1 or 2, it is characterized in that: wherein between the first test lead (T1) and the second resistance (R2), be in series with white light-emitting diode (Dw) and the 7th resistance (R7), and be also parallel with the first button (AN1) at the two ends of this white light-emitting diode (Dw) and the 7th resistance (R7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420002688.2U CN203688712U (en) | 2013-12-18 | 2014-01-03 | Low-voltage power distribution branch identification device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320839889 | 2013-12-18 | ||
| CN201320839889.3 | 2013-12-18 | ||
| CN201420002688.2U CN203688712U (en) | 2013-12-18 | 2014-01-03 | Low-voltage power distribution branch identification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203688712U true CN203688712U (en) | 2014-07-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420002688.2U Expired - Fee Related CN203688712U (en) | 2013-12-18 | 2014-01-03 | Low-voltage power distribution branch identification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203688712U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713233A (en) * | 2013-12-18 | 2014-04-09 | 国家电网公司 | Low-voltage distribution subcircuit identifying device |
-
2014
- 2014-01-03 CN CN201420002688.2U patent/CN203688712U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713233A (en) * | 2013-12-18 | 2014-04-09 | 国家电网公司 | Low-voltage distribution subcircuit identifying device |
| CN103713233B (en) * | 2013-12-18 | 2016-09-14 | 国家电网公司 | Low-voltage distribution branch road identification device |
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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: 20140702 Termination date: 20150103 |
|
| EXPY | Termination of patent right or utility model |