CN207181580U - Broken neutral line indicator - Google Patents
Broken neutral line indicator Download PDFInfo
- Publication number
- CN207181580U CN207181580U CN201721086829.3U CN201721086829U CN207181580U CN 207181580 U CN207181580 U CN 207181580U CN 201721086829 U CN201721086829 U CN 201721086829U CN 207181580 U CN207181580 U CN 207181580U
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- CN
- China
- Prior art keywords
- controller
- neutral line
- converter
- protector
- voltmeter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000007935 neutral effect Effects 0.000 title claims abstract description 29
- 230000001012 protector Effects 0.000 claims abstract description 32
- 239000004020 conductor Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 235000013399 edible fruits Nutrition 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 208000033999 Device damage Diseases 0.000 abstract description 2
- 230000004397 blinking Effects 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
It the utility model is related to a kind of broken neutral line indicator; housing is provided with voltmeter, overvoltage protector, pressure-failure protector, switch, audible-visual annunciator and GSM antenna; A/D converter, signal picker and controller are provided with housing; signal picker, A/D converter and controller are sequentially connected; voltmeter is connected with A/D converter, and controller is connected with overvoltage protector, pressure-failure protector, switch, audible-visual annunciator and GSM antenna.It is 198V when a phase voltage value exceedes over-pressed preset value 235V or a phase voltage value less than under-voltage preset value, the neutral thread breakage of explanation system, at this moment, audible-visual annunciator blinking red lamp simultaneously pipes, the signal of broken neutral line can be transferred to simultaneously in the mobile phone of patrol officer, which place patrol officer can quickly and accurately learn there occurs broken neutral line accident by mobile phone, so that patrol officer is handled as early as possible.Device sensitivity is high, accurately and reliably, reduce user and power supply enterprise because of dispute caused by device damage.
Description
Technical field
A kind of broken neutral line indicator is the utility model is related to, belongs to electric power application field.
Background technology
In low-voltage network, because often there is neutral conductor virtual connection, line-outage contingency in the reason such as wind, heat, chemistry.The neutral conductor breaks
Line accident can all occur every year, if broken neutral line, can cause neutral point drifting, cause the phase voltage that load is small in three-phase
Higher than the maximum permissible voltage of equipment, electrical equipment is caused to burn out, that big phase of load again can be minimum less than equipment because of voltage
Allow voltage, be not normally functioning equipment.
Utility model content
The utility model is directed to above-mentioned problems of the prior art, there is provided a kind of broken neutral line indicator, solves
In the prior art if broken neutral line, it is impossible to the problem of reminding in time.
The technical solution of the utility model is as follows：
Broken neutral line indicator, housing are provided with voltmeter, overvoltage protector, pressure-failure protector, switch, sound and light alarm
Device and GSM antenna, housing is interior to be provided with A/D converter, signal picker and controller, signal picker, A/D converter and control
Device is sequentially connected, and voltmeter is connected with A/D converter, and controller is connected with overvoltage protector, pressure-failure protector, switch, acousto-optic
Alarm and GSM antenna；Signal picker is connected with each phase line and the neutral conductor in three-phase circuit, the phase that will be collected
Voltage transmits to A/D converter, A/D converter and is converted into transmitting to controller and voltage after data signal by phase voltage signal
Table, voltmeter show that controller carries out that result is calculated to data signal, then operation result is changed to voltage value
Into alarm signal transport to audible-visual annunciator and overvoltage protector or pressure-failure protector, audible-visual annunciator sends sound and light alarm letter
Number, controller control overvoltage protector or pressure-failure protector coil closure, while controller controlling switch disconnects, described control
Device is transmitted warning message to terminating machine by GSM antenna.
Described voltmeter is provided with three pieces.
The utility model has the advantages of as follows：
When broken neutral line occurs, indicator is correctly alarmed, and reminds tour personnel in time, can prevent broken neutral line
Accident or timely centering line broken string place under repair.High sensitivity, accurately and reliably；User and power supply enterprise are reduced because of device damage
Produce dispute.
Brief description of the drawings
Fig. 1 is external structure schematic diagram of the present utility model.
Fig. 2 is structural schematic block diagram of the present utility model.
Fig. 3 is collector circuit theory schematic diagram of the present utility model.
Fig. 4 is A/D converter of the present utility model and controller circuitry principle schematic.
Embodiment
Embodiment
As illustrated, broken neutral line indicator, housing 1 be provided with voltmeter 2, overvoltage protector 3, pressure-failure protector 4,
Switch 5, audible-visual annunciator 6 and GSM antenna 7, housing is interior to be provided with A/D converter, signal picker and controller, signal acquisition
Device, A/D converter and controller are sequentially connected, and voltmeter is connected with A/D converter, and controller is connected with overvoltage protector, owed
Press protector, switch, audible-visual annunciator and GSM antenna；Signal picker and each phase line and neutrality in three-phase circuit
Line is connected, and the phase voltage collected is transmitted to A/D converter, after phase voltage signal is converted into data signal by A/D converter
Transmit to controller and voltmeter, voltmeter and voltage value is shown, controller carries out that knot is calculated to data signal
Fruit, then operation result is transformed into alarm signal transport to audible-visual annunciator and overvoltage protector or pressure-failure protector, acousto-optic report
Alert device sends sound and light alarm signal, controller control overvoltage protector or pressure-failure protector coil closure, while controller controls
Switch off, described controller is transmitted warning message to terminating machine by GSM antenna.
The utility model is monitored to the phase voltage in three-phase circuit between each phase line and the neutral conductor respectively.
At least one piece can monitor to be more than " preset voltage value " in three pieces of voltmeters, and also having one piece can monitor to be less than " predeterminated voltage
Value ".
The utility model carries out signal sampling to three-phase voltage value, and voltage signal is converted into digital letter by then A/D conversions
Number, controller passes through carries out that result is calculated to data signal, then operation result is transformed into alarm signal, audible-visual annunciator
Alarm and blinking red lamp will be sent；Instruct overvoltage protection coil to close simultaneously, and then make to switch off, so as to avoid the neutral conductor
Infringement of the open circuit to consumer electronics.
The utility model is furnished with GSM antenna, and when there is broken neutral line, controller passes through the signal of broken neutral line
GSM antenna is transferred in the mobile phone of patrol officer, patrol officer by mobile phone can quickly and accurately learn which place there occurs
Broken neutral line accident, so that patrol officer is handled as early as possible.
The utility model housing is plastic material, shell sizes：Long 350mm, wide 300mm, high 250mm；
The voltage indicating range 0-600V of three pieces of single-phase voltage tables；
According to regulation requirement of the national grid to voltage tolerance, 220V single phase power supplies voltage allows inclined overvoltage protector
Difference is+the 7% to -10% of rated voltage, so the over-pressed preset value of overvoltage protector is 235V；
According to regulation requirement of the national grid to voltage tolerance, 220V single phase power supplies voltage allows inclined pressure-failure protector
Difference is+the 7% to -10% of rated voltage, so the under-voltage preset value of pressure-failure protector is 198V.
Claims (4)
1. broken neutral line indicator, it is characterised in that housing be provided with voltmeter, overvoltage protector, pressure-failure protector, switch,
Audible-visual annunciator and GSM antenna, housing is interior to be provided with A/D converter, signal picker and controller, signal picker, A/D conversions
Device and controller are sequentially connected, and voltmeter is connected with A/D converter, and controller is connected with overvoltage protector, pressure-failure protector, opened
Pass, audible-visual annunciator and GSM antenna；Signal picker is connected with each phase line and the neutral conductor in three-phase circuit, will adopt
The phase voltage collected is transmitted to A/D converter, A/D converter and is converted into transmitting to controller after data signal by phase voltage signal
And voltmeter, voltmeter are shown to voltage value, controller to data signal be calculated result, then by computing knot
Fruit is transformed into alarm signal transport to audible-visual annunciator and overvoltage protector or pressure-failure protector, and audible-visual annunciator sends acousto-optic report
Alert signal, controller control overvoltage protector or pressure-failure protector coil closure, while controller controlling switch disconnects, it is described
Controller is transmitted warning message to terminating machine by GSM antenna.
2. broken neutral line indicator according to claim 1, it is characterised in that described voltmeter is provided with three pieces.
3. broken neutral line indicator according to claim 1, it is characterised in that the alarm signal of described GSM antenna transmission
Cease the information for broken neutral line.
4. broken neutral line indicator according to claim 1, it is characterised in that described terminating machine is patrol officer's
Mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721086829.3U CN207181580U (en) | 2017-08-29 | 2017-08-29 | Broken neutral line indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721086829.3U CN207181580U (en) | 2017-08-29 | 2017-08-29 | Broken neutral line indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207181580U true CN207181580U (en) | 2018-04-03 |
Family
ID=61739217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721086829.3U Active CN207181580U (en) | 2017-08-29 | 2017-08-29 | Broken neutral line indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207181580U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927438A (en) * | 2019-11-27 | 2020-03-27 | 齐桂真 | Direct current power supply voltage out-of-limit indicating device |
-
2017
- 2017-08-29 CN CN201721086829.3U patent/CN207181580U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927438A (en) * | 2019-11-27 | 2020-03-27 | 齐桂真 | Direct current power supply voltage out-of-limit indicating device |
| CN110927438B (en) * | 2019-11-27 | 2021-10-08 | 萧县众科电磁检测有限公司 | Direct current power supply voltage out-of-limit indicating device |
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