CN204613312U - A kind of three-phase load unbalance warning device - Google Patents
A kind of three-phase load unbalance warning device Download PDFInfo
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- CN204613312U CN204613312U CN201520378299.4U CN201520378299U CN204613312U CN 204613312 U CN204613312 U CN 204613312U CN 201520378299 U CN201520378299 U CN 201520378299U CN 204613312 U CN204613312 U CN 204613312U
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Abstract
The utility model provides a kind of technical scheme of three-phase load unbalance warning device, comprise the alarm be arranged on shell, the top of shell is provided with dust-proof weather shield, the inwall of shell is provided with rainproof layer, fixed transverse rod is provided with after shell, shell internal fixtion has circuit board, be provided with single-chip microcomputer on circuit boards, described single-chip microcomputer is connected with an interface circuit, described single-chip microcomputer is connected with alarm by driving circuit, the device of the program, when three-phase load unbalance detector detects imbalance, send warning timely, staff is reminded to adjust the loading condition of triple-phase line in time, avoid damaging controller switching equipment.
Description
Technical field
The utility model relates to a kind of warning device for three-phase load unbalance.
Background technology
In the prior art, known technology is the existence due to the increasing of rural area high-power electric appliance and back yard industry family, A, B, C three-phase load undulatory property is larger, artificial test in time regulates exists larger difficulty, and three-phase unbalance loading is seriously comparatively large to the harm of transformer controller switching equipment, and line loss increases, power factor is lower, reduce plant factor, increase cost of equipment maintenance, this is the weak point existing for prior art.
Summary of the invention
The purpose of this utility model, be exactly for the deficiency existing for prior art, and a kind of technical scheme of three-phase load unbalance warning device is provided, the device of the program, when three-phase load unbalance detector detects imbalance, send warning timely, remind staff to adjust the loading condition of triple-phase line in time, avoid damaging controller switching equipment.
This programme is achieved by the following technical measures: a kind of three-phase load unbalance warning device, comprise the alarm be arranged on shell, the feature of this programme is: the top of shell is provided with dust-proof weather shield, the inwall of shell is provided with rainproof layer, fixed transverse rod is provided with after shell, shell internal fixtion has circuit board, be provided with single-chip microcomputer on circuit boards, described single-chip microcomputer is connected with an interface circuit, described single-chip microcomputer is connected with alarm by driving circuit, described driving circuit comprises first triode V1, first triode V1 is connected with single-chip microcomputer by first resistance R1, the collector of first triode V1 is connected with+VCC by second resistor R2, the emitter of first triode V1 is by the 3rd resistance R3 ground connection, there is the first electric capacity C1 in parallel with the described the 3rd resistance R3, the emitter of second triode V2 is had to be connected with the collector of first triode V1, the collector of second triode V2 is by the 4th resistance R4 ground connection, there is the second electric capacity C2 in parallel with the 4th resistance R4, the base stage of second triode V2 is connected with the emitter of first triode V1 by the 5th resistance R5, the emitter of first triode V1 is connected with+VCC by the 6th resistance R6, the base stage of the 3rd triode V3 is had to be connected with the emitter of second triode V2, the emitter of the 3rd triode V3 is connected with+VCC, the collector of the 3rd triode V3 is by the 7th resistance R7 and LED ground connection, the collector of the 3rd triode V3 is connected with the base stage of the 4th triode V4, the grounded emitter of the 4th triode V4, the collector of the 4th triode V4 is connected with+VCC by an auxiliary reclay KM, auxiliary reclay KM is in parallel with first diode D1, the normally opened contact KM-1 of auxiliary reclay Hou Yu city of connecting with described alarm is electrically connected.
Described dust-proof weather shield is circular arc.
Fixed transverse rod is two.
The length of described fixed transverse rod is greater than the width of shell, and the two ends of fixed transverse rod are provided with fixed orifice.
Described+VCC is+6V.
Described alarm is arranged on the front end of shell, and the side of shell is provided with draw-in groove.
The beneficial effect of this programme can be learnt according to describing of such scheme, owing to there being dust-proof weather shield in this scenario, whole device can be protected like this can not to be subject to the impact of dust and rainwater etc., and dust-proof weather shield is circular arc, be beneficial to rainwater like this from both sides landing, can not fall in shell; Wall is provided with rainproof layer in the enclosure, can play rainproof effect further; The rear portion of shell is provided with fixed transverse rod, may be used for fixed housing like this, fixed transverse rod has fixed orifice, bolt easy to use, the fixtures such as screw are fixed; Fixed transverse rod is two, can prevent shell from rocking like this; The both sides of shell are provided with draw-in groove, may be used for fixing some identification cards etc., are convenient to staff and check.As can be seen here, the utility model compared with prior art, has substantive distinguishing features and progress, and its beneficial effect implemented also is apparent.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the electrical diagram of the utility model embodiment.
Fig. 3 is the circuit diagram of driving circuit.
In figure, 1 is shell, and 2 is draw-in groove, and 3 is circuit board, and 4 is dust-proof weather shield, and 5 is alarm, and 6 is rainproof layer, and 7 is fixed transverse rod, and 8 is fixed orifice, and 9 is single-chip microcomputer, and 10 is driving circuit, and 11 is interface circuit.
Embodiment
For the technical characterstic of this programme can be clearly demonstrated, below by an embodiment, and in conjunction with its accompanying drawing, this programme is set forth.
Can be found out that by accompanying drawing the three-phase load unbalance warning device of this programme comprises the alarm 5 be arranged on shell 1, the top of shell 1 is provided with dust-proof weather shield 4, and dust-proof weather shield is circular arc.The inwall of shell 1 is provided with rainproof layer 6, and be provided with two fixed transverse rods 7 after shell 1, the length of described fixed transverse rod is greater than the width of shell, and the two ends of fixed transverse rod are provided with fixed orifice.Shell 1 internal fixtion has circuit board 3, circuit board 3 is provided with single-chip microcomputer 9, described single-chip microcomputer 9 is connected with an interface circuit 11, for being connected with three-phase load unbalance detector, described single-chip microcomputer 9 is connected with alarm 5 by driving circuit 10, described driving circuit 10 comprises first triode V1, first triode V1 is connected with single-chip microcomputer by first resistance R1, the collector of first triode V1 is connected with+VCC by second resistor R2, + VCC is+6V, the emitter of first triode V1 is by the 3rd resistance R3 ground connection, there is the first electric capacity C1 in parallel with the described the 3rd resistance R3, the emitter of second triode V2 is had to be connected with the collector of first triode V1, the collector of second triode V2 is by the 4th resistance R4 ground connection, there is the second electric capacity C2 in parallel with the 4th resistance R4, the base stage of second triode V2 is connected with the emitter of first triode V1 by the 5th resistance R5, the emitter of first triode V1 is connected with+VCC by the 6th resistance R6, the base stage of the 3rd triode V3 is had to be connected with the emitter of second triode V2, the emitter of the 3rd triode V3 is connected with+VCC, the collector of the 3rd triode V3 is by the 7th resistance R7 and LED ground connection, the collector of the 3rd triode V3 is connected with the base stage of the 4th triode V4, the grounded emitter of the 4th triode V4, the collector of the 4th triode V4 is connected with+VCC by an auxiliary reclay KM, auxiliary reclay KM is in parallel with first diode D1, the normally opened contact KM-1 of auxiliary reclay Hou Yu city of connecting with described alarm is electrically connected.
Described alarm 5 is arranged on the front end of shell 1, and the side of shell 1 is provided with draw-in groove 2.
Claims (6)
1. a three-phase load unbalance warning device, comprise the alarm be arranged on shell, it is characterized in that: the top of shell is provided with dust-proof weather shield, the inwall of shell is provided with rainproof layer, fixed transverse rod is provided with after shell, shell internal fixtion has circuit board, be provided with single-chip microcomputer on circuit boards, described single-chip microcomputer is connected with an interface circuit, described single-chip microcomputer is connected with alarm by driving circuit, described driving circuit comprises first triode V1, first triode V1 is connected with single-chip microcomputer by first resistance R1, the collector of first triode V1 is connected with+VCC by second resistor R2, the emitter of first triode V1 is by the 3rd resistance R3 ground connection, there is the first electric capacity C1 in parallel with the described the 3rd resistance R3, the emitter of second triode V2 is had to be connected with the collector of first triode V1, the collector of second triode V2 is by the 4th resistance R4 ground connection, there is the second electric capacity C2 in parallel with the 4th resistance R4, the base stage of second triode V2 is connected with the emitter of first triode V1 by the 5th resistance R5, the emitter of first triode V1 is connected with+VCC by the 6th resistance R6, the base stage of the 3rd triode V3 is had to be connected with the emitter of second triode V2, the emitter of the 3rd triode V3 is connected with+VCC, the collector of the 3rd triode V3 is by the 7th resistance R7 and LED ground connection, the collector of the 3rd triode V3 is connected with the base stage of the 4th triode V4, the grounded emitter of the 4th triode V4, the collector of the 4th triode V4 is connected with+VCC by an auxiliary reclay KM, auxiliary reclay KM is in parallel with first diode D1, the normally opened contact KM-1 of auxiliary reclay Hou Yu city of connecting with described alarm is electrically connected.
2. three-phase load unbalance warning device according to claim 1, is characterized in that: described dust-proof weather shield is circular arc.
3. three-phase load unbalance warning device according to claim 1, is characterized in that: fixed transverse rod is two.
4. the three-phase load unbalance warning device according to claim 1 or 3, is characterized in that: the length of described fixed transverse rod is greater than the width of shell, and the two ends of fixed transverse rod are provided with fixed orifice.
5. three-phase load unbalance warning device according to claim 1, is characterized in that: described+VCC is+6V.
6. three-phase load unbalance warning device according to claim 1, is characterized in that: described alarm is arranged on the front end of shell, and the side of shell is provided with draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520378299.4U CN204613312U (en) | 2015-06-03 | 2015-06-03 | A kind of three-phase load unbalance warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520378299.4U CN204613312U (en) | 2015-06-03 | 2015-06-03 | A kind of three-phase load unbalance warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204613312U true CN204613312U (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520378299.4U Expired - Fee Related CN204613312U (en) | 2015-06-03 | 2015-06-03 | A kind of three-phase load unbalance warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204613312U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785205A (en) * | 2016-05-16 | 2016-07-20 | 上海欧忆智能网络有限公司 | Three-phase unbalanced load on-line monitoring system and device |
| CN106099896A (en) * | 2016-08-19 | 2016-11-09 | 国家电网公司 | A kind of neutral-point grounding resistance cabinet |
-
2015
- 2015-06-03 CN CN201520378299.4U patent/CN204613312U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785205A (en) * | 2016-05-16 | 2016-07-20 | 上海欧忆智能网络有限公司 | Three-phase unbalanced load on-line monitoring system and device |
| CN106099896A (en) * | 2016-08-19 | 2016-11-09 | 国家电网公司 | A kind of neutral-point grounding resistance cabinet |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20190603 |