CN203553879U - Three-phase voltage monitoring relay - Google Patents
Three-phase voltage monitoring relay Download PDFInfo
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- CN203553879U CN203553879U CN201320696686.3U CN201320696686U CN203553879U CN 203553879 U CN203553879 U CN 203553879U CN 201320696686 U CN201320696686 U CN 201320696686U CN 203553879 U CN203553879 U CN 203553879U
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- relay
- voltage monitoring
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Abstract
The utility model relates to a three-phase voltage monitoring relay, which comprises a power circuit, a signal processing circuit, a setting circuit, an indicating circuit, a relay output circuit and an MCU, wherein the MCU is used for receiving an acquisition voltage from a signal processing circuit, and outputting control signal values to the relay output circuit according to a parameter operation system control strategy set by the setting circuit. Since the MCU has a strong real-time signal processing function, the three-phase voltage monitoring relay can distinguish a plurality of input modes of setting, adjusting, storing and resetting of the setting circuit, can circularly display online parameters, parameters in the setting process and fault records in real time through the indicating circuit, greatly enhances the human-computer interactivity, and is suitable for requirements of various occasions; and with the application of the single-chip MCU, the three-phase voltage monitoring relay reduces the product size, is flexible in installation position, and accords with the development trend of intellectualization and miniaturization of current industrial control electric appliances.
Description
Technical field
The utility model relates to a kind of three-phase voltage monitoring relay.
Background technology
Voltage monitor is a kind of master control electrical apparatus being connected in electric control loop, for monitoring the line conditions of electric control loop, when finding that electric control loop has the faults such as disconnected phase, backward, overvoltage, under-voltage, unbalance in phase, to electric control loop, send the signal of disjunction, power consumption equipment in electric control loop is spun off from supply line, guarantee the safe operation of power consumption equipment.The general analog circuit being barricaded as by integrated package that adopts of existing three-phase voltage monitoring relay, volume is large and function is few, is difficult to realize man-machine interaction, does not meet the development trend of current Industry Control electrical equipment.
Summary of the invention
The purpose of this utility model is to overcome the defect of prior art, provides a kind of and consists of MCU and its peripheral circuit, and volume is little, and function is many, be easy to realize the three-phase voltage monitoring relay of man-machine interaction.
For achieving the above object, the utility model adopts so a kind of three-phase voltage monitoring relay, comprises
Power circuit, in order to provide power supply to the each element circuit of system;
Signal processing circuit, in order to gather the line voltage U of three-phase line L1, L2, L3
l1L2, U
l2L3, U
l3L1;
Circuit is set, comprise four groups of button inputting circuits, the combination of four groups of described button inputting circuits triggers the validity in order to disconnected phase, backward protection to be set, overvoltage, scope and the delay time that under-voltage, unbalance in phase is protected, and the number of times of the time that automatically resets, incoming call review time and fault memory recently;
Indicating circuit, comprises 4 seven segment digital tubes, in order to the parameter in circulation indication, the setting up procedure of three-phase line voltage and failure logging indication;
Outputting circuit for relay, comprises one group of single-pole double throw contact and coil, in order to send the signal of connecting with disjunction electric control circuit;
MCU, in order to receive the collection voltage from described signal processing circuit, and according to the described parameter operational system control strategy that circuit is adjusted that arranges, output control signal value is to described outputting circuit for relay.Compared with the prior art, the beneficial effects of the utility model are embodied in: because MCU has powerful real time signal processing function, can distinguish the multiple input pattern of setting, adjusting, storage and reset that circuit is set, also can show parameter and the failure logging in on-line parameter, setting up procedure by indicating circuit real-time circulation, strengthened greatly man-machine interaction, applicable to the demand of various occasions, and the application of monolithic MCU reduces small product size, installation site is flexible, meets the development trend of current Industry Control intelligent electrical apparatus, miniaturization.
Especially, described power circuit is powered by the two-phase in described three-phase line L1, L2, L3, in order to the coil in the outputting circuit for relay to described, provides DC power supply.Because system, control circuit adopts the two-phase power supply in three-phase line L1, L2, L3, expanded power supply scope, the power utilization environment strong adaptability of product.
Especially, described power circuit comprises switch power module, and the model of described switch power module is LNK500.
Accompanying drawing explanation
Fig. 1 is the functional-block diagram of the utility model embodiment three-phase voltage monitoring relay;
Fig. 2 is the schematic diagram of the utility model embodiment three-phase voltage monitoring relay middle part independent power source circuit.
Embodiment
As shown in Fig. 1～2, a kind of three-phase voltage monitoring relay, comprises
Power circuit, in order to provide power supply to the each element circuit of system;
Signal processing circuit, in order to gather the line voltage U of three-phase line L1, L2, L3
l1L2, U
l2L3, U
l3L1;
Circuit is set, comprise four groups of button inputting circuits, the combination of four groups of button inputting circuits triggers the validity in order to disconnected phase, backward protection to be set, overvoltage, scope and the delay time that under-voltage, unbalance in phase is protected, and the number of times of the time that automatically resets, incoming call review time and fault memory recently;
Indicating circuit, comprises 4 seven segment digital tubes, in order to the parameter in circulation indication, the setting up procedure of three-phase line voltage and failure logging indication;
Outputting circuit for relay, comprises one group of single-pole double throw contact and coil, in order to send the signal of connecting with disjunction electric control circuit;
MCU, in order to receive from the collection voltage of signal processing circuit, and according to the parameter operational system control strategy that circuit is set adjusts, output control signal value is to outputting circuit for relay.
Power circuit is powered by the two-phase in three-phase line L1, L2, L3, and the DC power supply of 12V is provided in order to the coil in outputting circuit for relay.Power circuit comprises switch power module U100, and the model of switch power module U100 is LNK500.
Claims (3)
1. a three-phase voltage monitoring relay, is characterized in that: comprise
Power circuit, in order to provide power supply to the each element circuit of system;
Signal processing circuit, in order to gather the line voltage U of three-phase line L1, L2, L3
l1L2, U
l2L3, U
l3L1;
Circuit is set, comprise four groups of button inputting circuits, the combination of four groups of described button inputting circuits triggers the validity in order to disconnected phase, backward protection to be set, overvoltage, scope and the delay time that under-voltage, unbalance in phase is protected, and the number of times of the time that automatically resets, incoming call review time and fault memory recently;
Indicating circuit, comprises 4 seven segment digital tubes, in order to the parameter in circulation indication, the setting up procedure of three-phase line voltage and failure logging indication;
Outputting circuit for relay, comprises one group of single-pole double throw contact and coil, in order to send the signal of connecting with disjunction electric control circuit;
MCU, in order to receive the collection voltage from described signal processing circuit, and according to the described parameter operational system control strategy that circuit is adjusted that arranges, output control signal value is to described outputting circuit for relay.
2. three-phase voltage monitoring relay according to claim 1, is characterized in that: described power circuit is powered by the two-phase in described three-phase line L1, L2, L3, in order to the coil in the outputting circuit for relay to described, provides DC power supply.
3. three-phase voltage monitoring relay according to claim 1 and 2, is characterized in that: described power circuit comprises switch power module, the model of described switch power module is LNK500.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320696686.3U CN203553879U (en) | 2013-10-24 | 2013-10-24 | Three-phase voltage monitoring relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320696686.3U CN203553879U (en) | 2013-10-24 | 2013-10-24 | Three-phase voltage monitoring relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203553879U true CN203553879U (en) | 2014-04-16 |
Family
ID=50471948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320696686.3U Expired - Fee Related CN203553879U (en) | 2013-10-24 | 2013-10-24 | Three-phase voltage monitoring relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203553879U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108717142A (en) * | 2018-05-31 | 2018-10-30 | 南京协澳智能控制***有限公司 | A kind of digital synchronous inspection relay with phase angle compensation function |
| CN109633239A (en) * | 2018-12-26 | 2019-04-16 | 厦门科华恒盛股份有限公司 | A kind of phase-voltage measurement method and system of three-phase three wire system |
-
2013
- 2013-10-24 CN CN201320696686.3U patent/CN203553879U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108717142A (en) * | 2018-05-31 | 2018-10-30 | 南京协澳智能控制***有限公司 | A kind of digital synchronous inspection relay with phase angle compensation function |
| CN109633239A (en) * | 2018-12-26 | 2019-04-16 | 厦门科华恒盛股份有限公司 | A kind of phase-voltage measurement method and system of three-phase three wire system |
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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: 20140416 Termination date: 20141024 |
|
| EXPY | Termination of patent right or utility model |