CN202994892U - Power supply failure detection unit - Google Patents
Power supply failure detection unit Download PDFInfo
- Publication number
- CN202994892U CN202994892U CN 201320017940 CN201320017940U CN202994892U CN 202994892 U CN202994892 U CN 202994892U CN 201320017940 CN201320017940 CN 201320017940 CN 201320017940 U CN201320017940 U CN 201320017940U CN 202994892 U CN202994892 U CN 202994892U
- Authority
- CN
- China
- Prior art keywords
- module
- power supply
- phase
- detection module
- voltage
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a power supply failure detection unit. The power supply failure detection unit comprises an undervoltage detection module, an overvoltage detection module which are used for detecting a 3-phase 4-line power supply, and a relay module, wherein the phase voltage of an N-line and a phase line of the 3-phase 4-line power supply is stepped down by a transformer and then sent to a working power supply module, the working power supply module provides the working power supply to the relay module, each phase voltage is respectively stepped down by resistors and then sent to the undervoltage detection module and the overvoltage detection module, the overvoltage detection module is connected with a first potentiometer for setting an overvoltage detection value, the undervoltage detection module is connected with a second potentiometer for setting an undervoltage detection value, the output signal of the overvoltage detection module and the undervoltage detection module is used for controlling the action of the relay module, the power supply normal signal or the power supply fault signal is output by the relay module to a control module. The power supply failure detection unit is simple in module, and convenient to implement, and has the functions of detecting the undervoltage, overvoltage and failure of the three-phase power supply and good failure detection effect.
Description
Technical field
The utility model relates to a kind of power failure monitor unit, is specially adapted to the power circuit of diesel motor.
Background technology
Because the voltage failure protection of the automatic switchover between diesel generator set self-starting, civil power and standby power supply and generator etc. all needs therefore normally whether the detecting, judge and control, protect of line voltage or generator voltage be necessary to design a kind of power failure monitor unit of effectively protecting diesel-driven generator.
The utility model content
The utility model makes improvements for the problem that above-mentioned prior art exists, and namely the technical problems to be solved in the utility model is to provide the power failure monitor unit that a kind of module is simple and fault detect is effective.
in order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of power failure monitor unit, comprise under-voltage detection module and overvoltage detection module and relay module for detection of the three-phase four-wire system power supply, the N line of described three-phase four-wire system power supply and the phase voltage of a phase line are sent into the working power module after transformer pressure-reducing, described working power module provides working power for relay module, each phase voltage is sent into respectively under-voltage detection module and overvoltage detection module after the resistance step-down, described overvoltage detection module is connected with the first potentiometer be used to the overvoltage detected value of adjusting, described under-voltage detection module is connected with the second potentiometer be used to the under-voltage detected value of adjusting, the action of the output signal pilot relay module of described under-voltage detection module and overvoltage detection module, described relay module out-put supply normal signal or power failure signal are to control module.
Compared with prior art, the utlity model has following beneficial effect: the module of this power failure monitor unit is simple, it is convenient to implement, and has the under-voltage, superpotential and the power down function that detect three-phase supply, and fault detect is effective.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Description of drawings
Fig. 1 is the module principle figure of the utility model embodiment.
In figure: 1 ~ 10-connection terminal, A-A phase line, B-B phase line, the C-C phase line, N-N line, R1 ~ R6, R21, R24-resistance, RP1-the first potentiometer, RP2-the second potentiometer, U1-rectifier bridge, N1-7809 paster triode, C7 ~ C10-capacitor, VD9 ~ 10-diode, the VDZ1-voltage stabilizing diode, VT1-triode, T-transformer, V-working power module, J-relay module, PCB-testing circuit plate.
Embodiment
as shown in Figure 1, a kind of power failure monitor unit, comprise under-voltage detection module and overvoltage detection module and relay module J for detection of the three-phase four-wire system power supply, the N line of described three-phase four-wire system power supply and the phase voltage of C phase line are sent into working power module V after transformer T step-down, described working power module V provides working power for relay module J, each phase voltage is sent into under-voltage detection module and overvoltage detection module respectively after two resistance step-downs of series connection, described overvoltage detection module is connected with the first potentiometer RP1 be used to the overvoltage detected value of adjusting, described under-voltage detection module is connected with the second potentiometer RP2 be used to the under-voltage detected value of adjusting, the action of the output signal pilot relay module J of described under-voltage detection module and overvoltage detection module, described relay module J out-put supply normal signal or power failure signal are to control module.
In the present embodiment, the specified phase voltage of described three-phase four-wire system power supply is 220V, the N line of described three-phase four-wire system power supply and triple-phase line are input to testing circuit plate PCB by corresponding connection terminal respectively, and each contact of described relay module J is input to testing circuit plate PCB by corresponding connection terminal respectively.Described the first potentiometer RP1 is connected to power Vcc, and described working power module V, relay module J, under-voltage detection module, the second potentiometer RP2 and overvoltage detection module are equipped with earth point.
The principle of work of the present embodiment is as follows: the power supply three-phase and four-line is input to testing circuit plate PCB by corresponding connection terminal respectively, wherein the phase voltage of N line and C phase line after transformer T step-down as the working power of testing circuit, send into overvoltage respectively after the resistance step-down and undervoltage detection circuit detects by the three-phase voltage of three connection terminals input, the first potentiometer RP1, the second potentiometer RP2 be used for respectively adjusting overvoltage and under-voltage detected value.When tested power supply was normal, overvoltage and undervoltage detection circuit were all exported high level, made the relay K adhesive, and the out-put supply normal signal is to control chip; And when tested abnormity of power supply and power supply three-phase or a voltage occured mutually higher than the overvoltage setting valve or lower than under-voltage setting valve, corresponding overvoltage or undervoltage detection circuit output low level discharged relay K, and the out-put supply fault-signal is to control chip.
The above is only preferred embodiment of the present utility model, and all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (5)
1. power failure monitor unit, be characterised in that: comprise under-voltage detection module and overvoltage detection module and relay module for detection of the three-phase four-wire system power supply, the N line of described three-phase four-wire system power supply and the phase voltage of a phase line are sent into the working power module after transformer pressure-reducing, described working power module provides working power for relay module, each phase voltage is sent into respectively under-voltage detection module and overvoltage detection module after the resistance step-down, described overvoltage detection module is connected with the first potentiometer be used to the overvoltage detected value of adjusting, described under-voltage detection module is connected with the second potentiometer be used to the under-voltage detected value of adjusting, the action of the output signal pilot relay module of described under-voltage detection module and overvoltage detection module, described relay module out-put supply normal signal or power failure signal are to control module.
2. power failure monitor according to claim 1 unit, is characterized in that: send into under-voltage detection module and overvoltage detection module after the resistance step-down of each phase voltage via two series connection.
3. power failure monitor according to claim 1 unit, it is characterized in that: N line and the triple-phase line of described three-phase four-wire system power supply are input to the testing circuit plate by corresponding connection terminal respectively.
4. power failure monitor according to claim 1 unit, it is characterized in that: each contact of described relay module is input to the testing circuit plate by corresponding connection terminal respectively.
5. power failure monitor according to claim 1 unit, it is characterized in that: the specified phase voltage of described three-phase four-wire system power supply is 220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320017940 CN202994892U (en) | 2013-01-15 | 2013-01-15 | Power supply failure detection unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320017940 CN202994892U (en) | 2013-01-15 | 2013-01-15 | Power supply failure detection unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202994892U true CN202994892U (en) | 2013-06-12 |
Family
ID=48566061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320017940 Expired - Fee Related CN202994892U (en) | 2013-01-15 | 2013-01-15 | Power supply failure detection unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202994892U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728485A (en) * | 2013-09-11 | 2014-04-16 | 上海交通大学 | Synchronous voltage detection device with protection function |
| CN105652216A (en) * | 2016-03-23 | 2016-06-08 | 哈尔滨飞机工业集团有限责任公司 | Detection circuit for helicopter alternating current power supply system |
| CN106405440A (en) * | 2015-07-28 | 2017-02-15 | Ls 产电株式会社 | Power failure monitoring device of digital protection relay |
| WO2018019097A1 (en) * | 2016-07-28 | 2018-02-01 | 中兴通讯股份有限公司 | Method and device for parsing alarm information |
| CN109540201A (en) * | 2018-11-01 | 2019-03-29 | 昆明冠鹏电子工程有限公司 | A kind of weak current engineering intelligent detection equipment |
| CN110286336A (en) * | 2019-07-04 | 2019-09-27 | 北京市速连科通信设备有限责任公司 | A kind of power detector |
-
2013
- 2013-01-15 CN CN 201320017940 patent/CN202994892U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728485A (en) * | 2013-09-11 | 2014-04-16 | 上海交通大学 | Synchronous voltage detection device with protection function |
| CN103728485B (en) * | 2013-09-11 | 2017-01-18 | 上海交通大学 | Synchronous voltage detection device with protection function |
| CN106405440A (en) * | 2015-07-28 | 2017-02-15 | Ls 产电株式会社 | Power failure monitoring device of digital protection relay |
| CN106405440B (en) * | 2015-07-28 | 2019-05-03 | Ls 产电株式会社 | The power failure supervision equipment of digital protective relay |
| CN105652216A (en) * | 2016-03-23 | 2016-06-08 | 哈尔滨飞机工业集团有限责任公司 | Detection circuit for helicopter alternating current power supply system |
| CN105652216B (en) * | 2016-03-23 | 2018-05-29 | 哈尔滨飞机工业集团有限责任公司 | A kind of Helicopter AC power-supply system detection circuit |
| WO2018019097A1 (en) * | 2016-07-28 | 2018-02-01 | 中兴通讯股份有限公司 | Method and device for parsing alarm information |
| CN109540201A (en) * | 2018-11-01 | 2019-03-29 | 昆明冠鹏电子工程有限公司 | A kind of weak current engineering intelligent detection equipment |
| CN110286336A (en) * | 2019-07-04 | 2019-09-27 | 北京市速连科通信设备有限责任公司 | A kind of power detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202994892U (en) | Power supply failure detection unit | |
| CN101630854B (en) | Uninterrupted power supply and method for detecting bypass fault of uninterrupted power supply | |
| CN101957413B (en) | Relay protection device detection circuit | |
| CN205665378U (en) | Relay adhesion detection circuitry | |
| CN103390879A (en) | Alternating current power supply input high voltage protection device | |
| CN203561857U (en) | Low-power standby control system | |
| CN201812008U (en) | Detection circuit for relay protection device | |
| CN102664451A (en) | Power failure detection circuit and detection method thereof | |
| CN203561847U (en) | Standby circuit control system with low power consumption | |
| CN105322567A (en) | Grid-connected inversion-based solar-diesel complementary controller and working method thereof | |
| CN202840489U (en) | Output short-circuit protection and output overload protection apparatus for inverter | |
| CN204118813U (en) | Direct-current charging post main circuit dual control electric power system | |
| CN201184906Y (en) | Test system for avalanche breakdown voltage overload point | |
| CN103475030A (en) | Countercurrent prevention control method and device | |
| CN102608371A (en) | Storage battery detecting device and undervoltage protection method thereof | |
| CN205231816U (en) | Rifle control box charges | |
| CN204597597U (en) | A kind of domestic solar electric power system | |
| CN103916070B (en) | Threephase asynchronous minimum power input energy saver and using method thereof | |
| CN105471086A (en) | Redundant power system and current adjustment method | |
| CN208158100U (en) | A kind of output overvoltage protection circuit and the power supply comprising the circuit | |
| CN202550222U (en) | Socket safety protection device and safety protection socket | |
| CN204858521U (en) | Cross undervoltage protection switch from double entry | |
| CN209627047U (en) | Ups power | |
| CN203688775U (en) | Multifunctional motor detection system | |
| CN204741302U (en) | Mobile unit's supply circuit |
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: 20130612 Termination date: 20190115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |