CN217789389U - Fan box becomes low pressure side circuit breaker control circuit - Google Patents
Fan box becomes low pressure side circuit breaker control circuit Download PDFInfo
- Publication number
- CN217789389U CN217789389U CN202221314760.6U CN202221314760U CN217789389U CN 217789389 U CN217789389 U CN 217789389U CN 202221314760 U CN202221314760 U CN 202221314760U CN 217789389 U CN217789389 U CN 217789389U
- Authority
- CN
- China
- Prior art keywords
- switching
- circuit
- circuit breaker
- switch
- opening
- 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
Images
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model provides a fan box becomes low pressure side circuit breaker control circuit relates to electric power transmission technical field. The wireless transmission device comprises a main switch, a wireless transmission unit, a breaker closing unit and a breaker opening unit. The wireless transmission unit comprises a transmitter and a receiver, a switching-on instruction circuit and a switching-off instruction circuit are arranged in the transmitter, the receiver is connected with the main switch in series, a switching-on response switch and a switching-off response switch which are connected in parallel are arranged in the receiver, the switching-on response switch is configured to receive a switching-on signal of the switching-on instruction circuit and close the switching-on response switch, and the switching-off response switch is configured to receive a switching-off signal of the switching-off instruction circuit and close the switching-off response switch. Through setting up wireless transmission unit, realize the long-range combined floodgate of case transformer substation low pressure side circuit breaker under the power transmission condition of fan case transformer substation, guarantee to have sufficient safe distance between operation operating personnel and the live equipment, reduce personnel's operational risk.
Description
Technical Field
The utility model relates to an electric power transmission technical field particularly, relates to a fan box becomes low pressure side circuit breaker control circuit.
Background
The current wind box transformer low-voltage side circuit breaker comprises two control modes, namely local control and remote control. Wherein local control needs operating personnel to operate on the spot, and remote control can realize that fan case becomes remote control under the on-line state.
When the fan box transformer substation is switched to the running state from the power failure state, the high-voltage side, the low-voltage side and the fan tower footing of the box transformer substation need to be powered step by step, and at the moment, because no power supply exists in the fan tower footing, the box transformer substation measurement and control device cannot normally communicate with the measurement and control background of the main control room box transformer substation, namely, remote control cannot be used, and an operator needs to switch on the site before the local control cabinet of the box transformer substation. If there is a short-circuit fault in the equipment between the box-type substation low-voltage side circuit breaker and the fan at this moment, the protection of the box-type substation low-voltage side circuit breaker fails, and electrical equipment may be damaged in serious cases, so that the personal safety of field operation operators is critical, and a great safety risk exists.
In view of this, the utility model is especially provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fan case becomes low pressure side circuit breaker control circuit, its can remote control fan case become the combined floodgate and the separating brake of circuit breaker when starting to operate, avoid the potential safety hazard that high voltage electricity brought.
The embodiment of the utility model is realized like this:
first aspect, the utility model provides a fan case becomes low pressure side circuit breaker control circuit, including master switch, wireless transmission unit, circuit breaker combined floodgate unit and circuit breaker separating brake unit.
In this embodiment, the main switch includes a first main switch, and the first main switch is directly connected in series with the receiver and is used for directly supplying power to the receiver, and the current flowing in the first main switch is 220V alternating current in this embodiment.
The wireless transmission unit comprises a transmitter and a receiver, wherein the transmitter is a handheld transmitter, a switching-on instruction circuit and a switching-off instruction circuit are arranged in the transmitter, the receiver is connected with a first main switch in series and used for providing an alternating current power supply for the receiver, a switching-on response switch and a switching-off response switch which are connected in parallel are arranged in the receiver, the switching-on response switch is configured to receive a switching-on signal of the switching-on instruction circuit and close the switching-on response switch, and the switching-off response switch is configured to receive a switching-off signal of the switching-off instruction circuit and close the switching-off response switch.
The circuit breaker closing unit comprises a closing circuit and a circuit breaker closing coil, and the closing response switch is connected with the circuit breaker closing coil in series through the closing circuit.
The circuit breaker opening unit comprises an opening circuit and a circuit breaker opening coil, the opening response switch is connected with the circuit breaker opening coil in series through the opening circuit, and the closing coil is connected with the opening coil in parallel.
When the fan box transformer substation is converted from a power failure state to an operation state, no power supply exists in the fan tower footing, the box transformer substation measurement and control device cannot normally communicate with the main control room box transformer substation measurement and control background, and an operator needs to switch on the local before the box transformer substation local control cabinet. If there is a short-circuit fault in the equipment between the box-type substation low-voltage side circuit breaker and the fan at this moment, the protection of the box-type substation low-voltage side circuit breaker fails, and electrical equipment may be damaged in serious cases, so that the personal safety of field operation operators is critical, and a great safety risk exists. Therefore, the inventor provides an improved generation fan box becomes low pressure side circuit breaker control circuit, through setting up wireless transmission unit, with transmitter and receiver communication connection, the receiver passes through the circuit and is connected with circuit breaker switching-on unit and circuit breaker separating brake unit simultaneously, through sending different instructions to the transmitter, for example through closing the switching-on instruction circuit for the receiver received signal, the switching-on response is opened and closed and is switched on through closing circuit and circuit breaker closing coil, realizes the switching-on of circuit breaker. This operation is through realizing the long-range combined floodgate of case transformer substation low pressure side circuit breaker under the fan does not transmit power the condition, guarantees to have sufficient safe distance between operation operating personnel and the live-line equipment, reduces personnel's operational risk.
In an alternative embodiment, the power supply of the transmitter is a 12V direct current power supply, the transmitting frequency of the transmitter is 420-450 MHz, and the input mode of the transmitter is a dry contact mode.
In an optional embodiment, the power supply of the receiver is a 220V alternating current power supply, the transmission frequency of the receiver is 420-450 MHz, the output mode is two pairs of normally open contacts, the output mode is a inching mode, the capacity of the output contacts is alternating current 220V and 10A, and the installation mode is guide rail installation.
It is understood that the above parameters of the transmitter and the receiver are only preferred embodiments of the present invention, and in other embodiments, the relevant parameters of the transmitter and the receiver can be changed conventionally as long as the functions of transmitting and receiving can be realized.
When the fan box transformer substation needs to be converted into an operating state from a power failure state, an operator can remotely operate the transmitter to enable a closing instruction circuit in the transmitter to be conducted to generate a closing signal, a closing response switch in the receiver receives the closing signal and closes the closing response switch, current flows into a closing circuit through the closing response switch and then passes through a closing coil to complete closing of the circuit breaker, and the fan box transformer substation is converted into the operating state from the power failure state.
When the fan box transformer substation needs to be subjected to brake opening, an operator can remotely operate the transmitter to enable a brake opening instruction circuit in the transmitter to be conducted to generate a brake opening signal, a brake opening response switch in the receiver receives the brake opening signal and closes the brake opening response switch, current flows into the brake opening circuit through the brake opening response switch and then passes through the brake opening coil to complete the root brake of the circuit breaker, and the fan box transformer substation completes the brake opening.
In an optional embodiment, the power supply module further comprises a circuit breaker energy storage unit, the circuit breaker energy storage unit is connected with the power supply module in series, and the circuit breaker energy storage unit comprises a circuit breaker energy storage motor and a circuit breaker energy storage indicator which are connected in parallel.
In alternative embodiments, the circuit breaker energy storage indicator comprises any one of an indicator light, a display, or an audible alarm.
Preferably, the circuit breaker energy storage indicator is a circuit breaker energy storage indicator light.
In an alternative embodiment, the transmission distance between the transmitter and the receiver for enabling the receiver to receive the closing signal and the opening signal is 100-500 m.
In other embodiments, the transmission distance between the transmitter and the receiver can be adjusted according to different choices of the transmitter and the receiver, which is just a preferred embodiment of the present invention.
In an optional implementation mode, the main switch further comprises a second main switch, the low-voltage side circuit breaker control loop of the fan box transformer substation further comprises a box transformer substation measurement and control device, the box transformer substation measurement and control device comprises a power module and a remote control module which are mutually independent, the power module is connected in series with the second main switch and used for supplying power to the box transformer substation measurement and control device, and the remote control module is configured to be selectively conducted with a closing circuit or a breaking circuit.
In an optional embodiment, a protection module is further arranged in the box transformer substation measurement and control device, and the protection module comprises a protection switch and a protection pressing plate which are connected in series, so that the protection pressing plate can be switched into or out of a protection tripping function of the box transformer substation measurement and control device. When the fan box transformer substation breaks down, the protection module is connected with the breaker opening circuit and used for disconnecting the low-voltage side breaker body of the fan box transformer substation.
In an optional embodiment, the remote control module further includes a second transmission unit, the second transmission unit includes a third transmission switch and a fourth transmission switch, the third transmission switch is connected in series with the closing coil of the circuit breaker through the closing circuit, and the fourth transmission switch is connected in series with the opening coil of the circuit breaker through the opening circuit.
When the fan box transformer substation needs to be switched on, an operator remotely operates the fan box transformer substation, the third transmission switch is controlled to be closed through the remote control module, and current flows into a switching-on circuit through the third transmission switch and then passes through the switching-on coil to complete the switching-on of the circuit breaker.
When the fan box transformer substation needs to be opened, an operator conducts remote operation, the fourth transmission switch is controlled to be closed through the remote control module, and current flows into the opening circuit through the fourth transmission switch and then passes through the opening coil to complete opening of the breaker.
In an optional embodiment, the system further includes a first transmission unit, the first transmission unit is controlled in situ, the first transmission unit includes a first transmission switch and a second transmission switch, the first transmission switch is connected in series with a closing coil of the circuit breaker through a closing circuit, and the second transmission switch is connected in series with an opening coil of the circuit breaker through an opening circuit.
When the fan box transformer substation needs to be switched on, an operator operates the first transmission switch on the spot to close the first transmission switch, and current flows into a switching-on circuit through the first transmission switch and then passes through the switching-on coil to complete the switching-on of the breaker.
When the fan box transformer substation needs to be opened, an operator operates the second transmission switch on the spot to close the second transmission switch, and current flows into the opening circuit through the second transmission switch and then passes through the opening coil to complete the opening of the breaker.
The embodiment of the utility model provides a beneficial effect is:
the utility model provides a fan box becomes low pressure side circuit breaker control circuit, through setting up the wireless transmission unit, with transmitter and receiver communication connection, the receiver passes through the circuit and is connected with circuit breaker combined floodgate unit and circuit breaker separating brake unit simultaneously, through sending different instructions to the transmitter, for example through closed combined floodgate instruction circuit for receiver received signal, combined floodgate response switch closes and switches on through combined floodgate circuit and circuit breaker combined floodgate coil, realizes the combined floodgate of circuit breaker. This operation is through realizing the long-range combined floodgate of case transformer substation low pressure side circuit breaker under the fan does not transmit power the circumstances, guarantees to have sufficient safe distance between operation operating personnel and the live-wire apparatus, reduces personnel's operational risk.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a circuit diagram of a low-voltage side circuit breaker control circuit of a blower box transformer substation provided by the first embodiment of the present invention.
The icon is 100-a fan box transformer low-voltage side circuit breaker control loop; 110 — first general switch; 120-a second master switch; 130-a transmitter; 131-a switching-on command circuit; 132-a brake-off command circuit; 140-a receiver; 141-closing response switch; 142-an opening response switch; 151-closing circuit; 152-a breaker closing coil; 161-a switching-off circuit; 162-breaker opening coil; 171-a protection switch; 172-a power module; 173-protective press plate; 174-a processor; 175-a remote control module; 1751 — a third transmission switch; 1752 — a fourth transmission switch; 181-breaker energy storage motor; 182-a circuit breaker energy storage indicator; 191-a first transmission switch; 192-second transmission switch.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
First embodiment
Referring to fig. 1, the present embodiment provides a control circuit 100 for a low-voltage side circuit breaker of a blower box transformer substation, which includes a main switch, a wireless transmission unit, a circuit breaker closing unit, and a circuit breaker opening unit.
In this embodiment, the main switch includes a first main switch 110, the first main switch 110 is directly connected in series with the receiver 140 for directly supplying power to the receiver 140, and in this embodiment, the current flowing through the first main switch 110 is 220V ac.
The wireless transmission unit comprises a transmitter 130 and a receiver 140, the transmitter 130 is a handheld transmitter 130, a closing instruction circuit 131 and an opening instruction circuit 132 are arranged in the handheld transmitter 130, the receiver 140 is connected in series with the first main switch 110, a closing response switch 141 and an opening response switch 142 are arranged in the receiver 140 and are connected in parallel, the closing response switch 141 is configured to receive a closing signal of the closing instruction circuit 131 and close the closing response switch 141, and the opening response switch 142 is configured to receive an opening signal of the opening instruction circuit 132 and close the opening response switch 142.
The breaker closing unit includes a closing circuit 151 and a breaker closing coil 152, and the closing response switch 141 is connected in series with the breaker closing coil 152 through the closing circuit 151.
The circuit breaker opening unit comprises an opening circuit 161 and a circuit breaker opening coil 162, the opening response switch 142 is connected with the circuit breaker opening coil 162 in series through the opening circuit 161, and the closing coil and the opening coil are connected in parallel.
In this embodiment, the power supply of the transmitter 130 is a 12V dc power supply, the transmission frequency of the transmitter 130 is 420 to 450MHz, and the input mode of the transmitter 130 is a dry contact mode.
In this embodiment, the power supply of the receiver 140 is 220V ac power supply, the transmission frequency of the receiver 140 is 420-450 MHz, the output mode is two pairs of normally open contacts, the output mode is a jog mode, the output contact capacity is 220V and 10A ac, and the installation mode is rail installation.
In other embodiments, the relevant parameters of the transmitter 130 and the receiver 140 may be changed routinely as long as the transmitting and receiving functions are implemented.
In this embodiment, a breaker energy storage unit is further included, the breaker energy storage unit is connected in series with the power module 172, and the breaker energy storage unit includes a breaker energy storage motor 181 and a breaker energy storage indicator 182 that are connected in parallel.
In this embodiment, the circuit breaker energy storage indicator 182 is a circuit breaker energy storage indicator light.
In the present embodiment, the transmission distance between the transmitter 130 and the receiver 140 is 100 to 500m so that the receiver 140 can receive the closing signal and the opening signal.
In the present embodiment, the transmission distance between the transmitter 130 and the receiver 140 can be adjusted according to different choices of the transmitter 130 and the receiver 140, which is just a preferred embodiment of the present invention.
In this embodiment, the master switch further includes second master switch 120, and fan case becomes low-voltage side circuit breaker control circuit 100 still includes case and becomes measurement and control device, and case becomes measurement and control device and includes mutually independent power module 172 and remote control module 175, and power module 172 establishes ties with second master switch 120 for give case becomes measurement and control device power supply, power module 172 still forms the route with treater 174 for the combined floodgate and the separating brake of processing case and becoming measurement and control device, remote control module 175 is configured as optionally to switch on with combined floodgate circuit or separating brake circuit.
In this embodiment, a protection module is further disposed in the box transformer substation measurement and control device, and the protection module includes a protection switch 171 and a protection pressing plate 173 that are connected in series, so that the protection pressing plate 173 is connected to or disconnected from a protection tripping function of the box transformer substation measurement and control device. When the blower box transformer substation breaks down, the protection module is used for switching on the breaker opening circuit 161 to switch off the low-voltage side breaker body of the blower box transformer substation.
In this embodiment, the remote control module 175 further includes a second transmission unit, the second transmission unit includes a third transmission switch 1751 and a fourth transmission switch 1752, the third transmission switch 1751 is connected in series with the circuit breaker closing coil 152 through the closing circuit 151, and the fourth transmission switch 1752 is connected in series with the circuit breaker opening coil 162 through the opening circuit 161.
In this embodiment, the system further includes a first transmission unit, the first transmission unit is controlled locally, the first transmission unit includes a first transmission switch 191 and a second transmission switch 192, the first transmission switch 191 is connected in series with the closing coil 152 of the circuit breaker through the closing circuit 151, and the second transmission switch 192 is connected in series with the opening coil 162 of the circuit breaker through the opening circuit 161.
The working principle of the control circuit 100 for the low-voltage side circuit breaker of the blower box transformer substation provided by the embodiment is as follows:
1) When the fan tower footing is in a non-energized state, but the fan box needs to be switched on, an operator can remotely operate the transmitter 130 to enable the switching-on instruction circuit 131 in the transmitter 130 to be switched on to generate a switching-on signal, the switching-on response switch 141 in the receiver 140 receives the switching-on signal to switch on the switching-on response switch 141, current flows into the switching-on circuit 151 through the switching-on response switch 141 to complete the switching-on of the circuit breaker through the switching-on coil, and the fan box is changed from a power failure state to an operating state.
2) When the fan tower footing is in an electrified state and the fan box needs to be switched on, the switching-on operation can be realized through the following two operation modes:
(1) the operator locally operates the first transmission switch 191, so that the first transmission switch 191 is closed, and the current flows into the closing circuit 151 through the first transmission switch 191 and then passes through the closing coil to complete the closing of the circuit breaker.
(2) The remote operation of the operator controls the third transmission switch 1751 to be closed through the remote control module 175, and the current flows into the closing circuit 151 through the third transmission switch 1751 and then passes through the closing coil to complete the closing of the circuit breaker.
3) When the fan box needs to be subjected to brake opening operation, the following three operation modes can be adopted:
(1) an operator can remotely operate the transmitter 130 to enable the opening instruction circuit 132 in the transmitter 130 to be conducted to generate an opening signal, the opening response switch 142 in the receiver 140 receives the opening signal to close the opening response switch 142, current flows into the opening circuit 161 through the opening response switch 142 and then passes through the opening coil to complete the root opening of the circuit breaker, and the fan box becomes to complete the opening.
(2) The operator locally operates the second transmission switch 192, so that the second transmission switch 192 is closed, and the current flows into the opening circuit 161 through the second transmission switch 192 and then passes through the opening coil to complete the opening of the circuit breaker.
(3) The remote operation of the operator controls the fourth transmission switch 1752 to be closed through the remote control module 175, and the current flows into the opening circuit 161 through the fourth transmission switch 1752 and then passes through the opening coil to complete the opening of the circuit breaker.
The embodiment of the utility model provides a pair of fan box becomes low pressure side circuit breaker control circuit 100, it has following advantage at least:
1. through setting up wireless transmission unit, with transmitter 130 and receiver 140 communication connection, receiver 140 is connected with circuit breaker switching-on unit and circuit breaker separating brake unit through the circuit simultaneously, through sending different instructions to transmitter 130, for example through closing instruction circuit 131 for receiver 140 receives the signal, and closing response switch 141 closes and switches on with circuit breaker closing coil 152 through closing circuit 151, realizes the combined floodgate of circuit breaker. This operation is through realizing the long-range combined floodgate of case transformer substation low pressure side circuit breaker under the fan does not transmit power the condition, guarantees to have sufficient safe distance between operation operating personnel and the live-line equipment, reduces personnel's operational risk.
2. By combining the wireless transmission unit with local control and remote control, the multi-method control of switching-on and switching-off of the circuit breaker is realized, and an operator can select any one of wireless control, local control and remote control to realize switching-on and switching-off of the circuit breaker according to actual needs.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A control loop of a low-voltage side circuit breaker of a blower box transformer substation is characterized by comprising a main switch, a wireless transmission unit, a circuit breaker switching-on unit and a circuit breaker switching-off unit;
the wireless transmission unit comprises a transmitter and a receiver, the transmitter is a handheld transmitter, a switching-on instruction circuit and a switching-off instruction circuit are arranged in the transmitter, the receiver is connected with the main switch in series and used for providing alternating current power for the receiver, a switching-on response switch and a switching-off response switch which are connected in parallel are arranged in the receiver, the switching-on response switch is configured to receive a switching-on signal of the switching-on instruction circuit and close the switching-on response switch, and the switching-off response switch is configured to receive a switching-off signal of the switching-off instruction circuit and close the switching-off response switch;
the circuit breaker switching-on unit comprises a switching-on circuit and a circuit breaker switching-on coil, and the switching-on response switch is connected with the circuit breaker switching-on coil in series through the switching-on circuit;
the breaker opening unit comprises an opening circuit and a breaker opening coil, the opening response switch is connected with the breaker opening coil in series through the opening circuit, and the closing coil is connected with the opening coil in parallel.
2. The blower box transformer low-voltage side circuit breaker control circuit according to claim 1, further comprising a circuit breaker energy storage unit, wherein the circuit breaker energy storage unit is connected with the main switch in series, and the circuit breaker energy storage unit comprises a circuit breaker energy storage motor and a circuit breaker energy storage indicator which are connected in parallel.
3. The blower box transformer low-voltage side circuit breaker control circuit of claim 2, wherein the circuit breaker energy storage indicator comprises any one of an indicator light, a display or an audible alarm.
4. The blower box transformer low-voltage side circuit breaker control circuit according to claim 2, wherein the transmission distance of the transmitter and the receiver is 100-500 m.
5. The low-voltage side circuit breaker control loop of the blower box transformer substation according to any one of claims 2 to 4, further comprising a box transformer substation measurement and control device, wherein the box transformer substation measurement and control device comprises a power module and a remote control module which are mutually independent, the power module is connected in series with a main switch and used for supplying power to the box transformer substation measurement and control device, and the remote control module is configured to be selectively conducted with the switching-on circuit or the switching-off circuit.
6. The blower box transformer substation low-voltage side circuit breaker control loop according to claim 5, wherein a protection module is further arranged in the box transformer substation measurement and control device, and the protection module comprises a protection switch and a protection pressing plate which are connected in series, and is used for switching in or exiting from a protection tripping function of the box transformer substation measurement and control device.
7. The blower box transformer low-voltage side circuit breaker control loop according to claim 5, wherein the remote control module further comprises a second transmission unit, the second transmission unit comprises a third transmission switch and a fourth transmission switch, the third transmission switch is connected in series with the circuit breaker closing coil through the closing circuit, and the fourth transmission switch is connected in series with the circuit breaker opening coil through the opening circuit.
8. The blower box transformer low-voltage side circuit breaker control circuit according to any one of claims 2 to 4, further comprising a first transmission unit, wherein the first transmission unit comprises a first transmission switch and a second transmission switch, the first transmission switch is connected in series with the circuit breaker closing coil through the closing circuit, and the second transmission switch is connected in series with the circuit breaker opening coil through the opening circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221314760.6U CN217789389U (en) | 2022-05-27 | 2022-05-27 | Fan box becomes low pressure side circuit breaker control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221314760.6U CN217789389U (en) | 2022-05-27 | 2022-05-27 | Fan box becomes low pressure side circuit breaker control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217789389U true CN217789389U (en) | 2022-11-11 |
Family
ID=83910861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221314760.6U Active CN217789389U (en) | 2022-05-27 | 2022-05-27 | Fan box becomes low pressure side circuit breaker control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217789389U (en) |
-
2022
- 2022-05-27 CN CN202221314760.6U patent/CN217789389U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109884521B (en) | Circuit breaker divide-shut brake control circuit broken wire monitoring alarm circuit | |
| CN207651862U (en) | Safe power distribution box based on Internet of Things centralized management early warning control application | |
| CN107171431B (en) | Uninterrupted power regulating equipment, uninterrupted power regulating system and uninterrupted power regulating control method | |
| CN209803293U (en) | Circuit breaker closing and opening control circuit broken wire monitoring and alarming circuit | |
| CN217789389U (en) | Fan box becomes low pressure side circuit breaker control circuit | |
| CN114188971A (en) | Photovoltaic box-type substation | |
| CN104538259A (en) | Circuit breaker in-situ operation handle emergency remote control device | |
| CN112504353A (en) | High-voltage circuit breaker and state monitoring device thereof | |
| CN210468487U (en) | Maintenance box with leakage protection function | |
| CN206498252U (en) | A kind of gas-filling cabinet Anti-misoperation circuit with remote control | |
| CN213808181U (en) | Self-starting device of time relay control ventilator | |
| CN209232114U (en) | A kind of electrification in high voltage induction alarm device | |
| CN204375672U (en) | A kind of circuit breaker local operation handle is met an urgent need remote control | |
| CN210577089U (en) | Switch cabinet | |
| CN213661199U (en) | Quick power-off circuit for power supply sliding contact line of crane | |
| CN217590366U (en) | Transformer automatic switching device | |
| CN201540480U (en) | Remote control device for substation illumination and fan systems | |
| CN209844647U (en) | Remote control device applied to box-type transformer | |
| CN110967995B (en) | Nuclear magnetic resonance's electric switch control system | |
| CN220172846U (en) | Motor monitoring system | |
| CN109510244A (en) | Low pressure distributed photovoltaic switching control device and system | |
| CN215266142U (en) | Intelligent air switch controller | |
| CN216489719U (en) | User anti-reverse-electrification early warning monitoring device | |
| CN213877912U (en) | Novel electrical loop for canceling self-holding of GIS disconnecting link mechanism | |
| CN219202462U (en) | Electrical fire monitoring and early warning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |