CN213277945U - Medium-voltage comprehensive protection tripping intermediate relay control circuit - Google Patents
Medium-voltage comprehensive protection tripping intermediate relay control circuit Download PDFInfo
- Publication number
- CN213277945U CN213277945U CN202022165645.4U CN202022165645U CN213277945U CN 213277945 U CN213277945 U CN 213277945U CN 202022165645 U CN202022165645 U CN 202022165645U CN 213277945 U CN213277945 U CN 213277945U
- Authority
- CN
- China
- Prior art keywords
- tripping operation
- relay
- intermediate relay
- resistance
- circuit board
- 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.)
- Active
Links
- 230000009471 action Effects 0.000 claims description 5
- 230000006872 improvement Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model discloses a medium voltage comprehensive protection tripping operation intermediate relay control circuit is the improvement circuit to former design circuit, tripping operation intermediate relay control circuit includes tripping operation protection control scheme board, installs tripping operation intermediate relay and the signal relay of establishing ties on the circuit board, tripping operation intermediate relay resistance that connects in parallel, the electric current that flows through signal relay equals to flow through the closing of tripping operation intermediate relay's electric current and resistance current, sets up a connector on the circuit board, resistance passes through connector and tripping operation intermediate relay parallel connection. The utility model discloses simple structure through the parallelly connected resistance in tripping operation auxiliary relay next door, improves series signal relay's operating current, has guaranteed the stability of signal relay work, and on introducing the circuit board with high-power resistance through socket-plug from the circuit board, guaranteed to improve the structure that does not change the existing equipment.
Description
Technical Field
The utility model relates to a middling pressure is combined and is protected tripping operation auxiliary relay control circuit is to current control circuit's improvement circuit.
Background
In a sewage treatment system, comprehensive tripping protection needs to be set for primary and secondary fans in medium-voltage power supply, a tripping protection control panel integrates an intermediate relay control circuit for tripping protection, a tripping intermediate relay is arranged in the control circuit, a signal relay is connected in series in a circuit of the tripping intermediate relay to obtain a working state signal of the tripping intermediate relay, and the condition that the signal relay is unstable in working during operation provides an inaccurate signal for the control of the system.
Disclosure of Invention
An object of the utility model is to provide a tripping circuit is synthesized to middling pressure is to current control circuit's improvement circuit.
In order to realize the purpose, the technical scheme of the utility model is that: the utility model provides a tripping operation intermediate relay control circuit is synthesized to middling pressure, tripping operation intermediate relay control circuit includes tripping operation protection control circuit board, installs tripping operation intermediate relay and the signal relay of establishing ties on the circuit board, and tripping operation intermediate relay moves the tripping operation of drive major loop, wherein, tripping operation intermediate relay parallelly connected resistance, the electric current that flows through signal relay equals to flow through the closing of tripping operation intermediate relay's electric current and resistance current, sets up a connector on the circuit board, resistance passes through connector and tripping operation intermediate relay parallel connection.
The scheme is further as follows: the resistance value of the resistor is equal to that of the pull-in solenoid of the tripping intermediate relay, and the equal resistance value enables the current flowing through the tripping intermediate relay to be equal to the resistance current.
The utility model has the advantages that: simple structure through the parallelly connected resistance of tripping operation auxiliary relay next door, improves the operating current of series signal relay, has guaranteed the stability of signal relay work, on introducing the circuit board through socket-plug from the circuit board with high-power resistance, has guaranteed to improve the structure that does not change former equipment.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic diagram of the medium voltage comprehensive protection tripping circuit of the present invention.
Detailed Description
A kind of medium voltage comprehensive protection (comprehensive protection) tripping intermediate relay control circuit, it is the improved circuit to the original design circuit, as shown in fig. 1, the said tripping intermediate relay control circuit includes tripping protection control circuit board 1, install tripping intermediate relay 101 and signal relay 102 connected in series on the circuit board, control voltage + KM and-KM are drawn to the circuit board and jumped across tripping intermediate relay 101 and signal relay 102 as the control power supply, there are multiple control contact leading-out pins in series-parallel connection between signal relay 102 and control voltage + KM, respectively: the remote trip trigger switch comprises a remote trip trigger switch contact 2, a local trip trigger switch contact 3 and other logic trigger switch contacts 4 on the circuit board, wherein the local trip trigger switch contact 3 is connected with a delay switch 5 in series; wherein: in order to stabilize the contact action of the signal relay 102, in the present embodiment, the tripping intermediate relay 101 is connected in parallel with a resistor 7, and the current flowing through the signal relay is equal to the combination of the current flowing through the tripping intermediate relay and the resistance current, so that the current flowing through the signal relay is increased, and the problem of unstable contact of the signal relay 102 is solved, wherein do not influence the normal actuation action of tripping operation auxiliary relay 101 in order to guarantee, the resistance of resistance 7 with the resistance value of tripping operation auxiliary relay actuation solenoid equals, and the resistance value that equals makes the electric current and the resistance current that flow through tripping operation auxiliary relay equal and has guaranteed the normal actuation action of tripping operation auxiliary relay 101, in order not to change original circuit board, sets up a connector 8 on the circuit board, resistance is installed and is passed through connector 8 and tripping operation auxiliary relay 101's actuation coil parallel connection on the structure outside the circuit board, because resistance 7 is not on the circuit board, consequently. The power of the resistor 7 can be selected widely, the resistor 7 with 10W is selected in the embodiment, and the resistor 7 can ensure the stable action of the signal relay 102 under the frequent start-stop working state. Fig. 1 shows only the control circuit related to the modification, and other control circuits are shown on the circuit board 1. The high-power resistor is introduced into the circuit board from the circuit board through the plug socket, so that the improvement is guaranteed without changing the structure of the original equipment.
Claims (2)
1. The utility model provides a tripping operation intermediate relay control circuit is synthesized to middling pressure, tripping operation intermediate relay control circuit includes tripping operation protection control circuit board, installs tripping operation intermediate relay and the signal relay of establishing ties on the circuit board, and tripping operation intermediate relay action drive major loop tripping operation, a serial communication port, tripping operation intermediate relay resistance that connects in parallel, the electric current that flows through signal relay equals to flow through tripping operation intermediate relay's electric current and the combination of resistance current, sets up a connector on the circuit board, resistance passes through connector and tripping operation intermediate relay parallel connection.
2. The medium voltage integrated protection trip relay control circuit of claim 1, wherein the resistance value of the resistor is equal to the resistance value of the trip relay pull-in coil, and the equal resistance values equalize the current flowing through the trip relay and the resistor current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022165645.4U CN213277945U (en) | 2020-09-28 | 2020-09-28 | Medium-voltage comprehensive protection tripping intermediate relay control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022165645.4U CN213277945U (en) | 2020-09-28 | 2020-09-28 | Medium-voltage comprehensive protection tripping intermediate relay control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213277945U true CN213277945U (en) | 2021-05-25 |
Family
ID=75945919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022165645.4U Active CN213277945U (en) | 2020-09-28 | 2020-09-28 | Medium-voltage comprehensive protection tripping intermediate relay control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213277945U (en) |
-
2020
- 2020-09-28 CN CN202022165645.4U patent/CN213277945U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101478176B (en) | Backup electric power system | |
| CN213277945U (en) | Medium-voltage comprehensive protection tripping intermediate relay control circuit | |
| CN107845519B (en) | Double power supply automatic transfer switch and its control method | |
| CN109655741B (en) | Quick wiring and line selection device based on mechanical characteristic test | |
| CN206117164U (en) | Circuit voltage regulator | |
| CN206516898U (en) | A kind of connecting and disconnecting of the circuit device | |
| CN111290317B (en) | CAN control module, CAN emergency shutdown channel circuit and vehicle | |
| CN210807214U (en) | Circuit structure for realizing ultralow standby power consumption by utilizing optical coupler of switching device | |
| CN203760403U (en) | Circuit breaker with time relay | |
| CN106159784A (en) | A kind of modular low-voltage electrical apparatus | |
| CN208189362U (en) | A kind of 400 volts of Open Type Electric Current Mutual Inductor components | |
| CN104714581A (en) | spaceborne camera power supply system based on transformer | |
| CN220553391U (en) | Switch module for contactor and contactor module | |
| CN108462159A (en) | A kind of dc circuit breaker based on the constraint of fault current magnetic circuit | |
| CN221406364U (en) | Electrical fault injection test fixture | |
| CN104240993B (en) | Complementary circuit arc suppression method, power expansion method and basic structure thereof | |
| CN214043510U (en) | Control circuit and control device of vacuum circuit breaker | |
| CN221747096U (en) | Switching circuit | |
| CN214898258U (en) | Relay zero-crossing control circuit | |
| CN218702828U (en) | Charging control equipment and charging control system | |
| CN213583638U (en) | Combined relay | |
| CN117175531B (en) | Battery management system | |
| CN204578138U (en) | A kind of instrument power supply circuit | |
| CN210110649U (en) | Circuit breaker with on-off relay intelligent control module | |
| CN221428895U (en) | Three-state output circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chang Lugang Inventor after: Chai Jianwei Inventor after: Zhang Jiangjun Inventor after: Liu Xiaotong Inventor after: Bai Jincai Inventor after: Zhang Tao Inventor after: Wang Weisong Inventor after: Li Hai Inventor after: Guo Kang Inventor before: Chang Lugang Inventor before: Guo Kang Inventor before: Zeng Wuqing Inventor before: Chai Jianwei Inventor before: Zhang Jiangjun Inventor before: Liu Xiaotong Inventor before: Bai Jincai Inventor before: Zhang Tao Inventor before: Wang Weisong Inventor before: Li Hai |
|
| CB03 | Change of inventor or designer information |