CN204068426U - A kind of controller of demarcation circuit breaker - Google Patents
A kind of controller of demarcation circuit breaker Download PDFInfo
- Publication number
- CN204068426U CN204068426U CN201420399401.4U CN201420399401U CN204068426U CN 204068426 U CN204068426 U CN 204068426U CN 201420399401 U CN201420399401 U CN 201420399401U CN 204068426 U CN204068426 U CN 204068426U
- Authority
- CN
- China
- Prior art keywords
- pin
- module
- interface
- controller
- cpu
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/40—Display of information, e.g. of data or controls
Abstract
The utility model provides a kind of controller of demarcation circuit breaker, it comprises CPU, power subsystem and interface, and the functional unit to be electrically connected with CPU, this functional unit is connected with interface signal transfer, described power subsystem comprises power module, reserve battery module and battery charging module, described battery charging module and reserve battery model calling, and described battery charging module is connected with power module by interface, described power module provides the power supply of the controller of whole demarcation circuit breaker, also comprise liquid crystal display and keyboard unit, described liquid crystal display is connected with the signal output interface of CPU, the signal input interface of this CPU is connected with keyboard unit.This patent intuitively shows each functional parameter and concrete numerical value by dot matrix type liquid crystal display screen, has also simplified circuit simultaneously, when input power power-off, still can work within a certain period of time, line correlation of going forward side by side protection operation.
Description
Technical field
The utility model belongs to electric power network field, especially relates to a kind of controller of demarcation circuit breaker.
Background technology
The effect of demarcation circuit breaker is exactly be in operation automatism isolation user side phase fault, automatically excision user side joint digital signal earth fault, and can be used for operation open failure electric current.
At present, the parameter of the controller of conventional demarcation circuit breaker is determined by the coding disk of panel, but the coding disk on panel is arranged by two dial-ups for each parameter, these two dial-up numerals only represent sequence number, concrete setting value data need to table look-up just to may correspond to obtain by thumbing technical data, display numerical value is not directly perceived, and can be limited due to panel space in actual production, open up the coding disk limited amount listed, thus limit the quantity of controller defencive function parameter, in addition original type controllers is nearly all by single Power supply, and when extraneous power-off suddenly, some protection operations cannot be completed, such as cut off the work such as electric current.
Summary of the invention
Problem to be solved in the utility model is to provide a kind ofly has duplicate supply and the controller of demarcation circuit breaker with liquid crystal display, and reduces the volume of whole hardware simultaneously, increases visual and ease of Use type.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of controller of demarcation circuit breaker, it comprises CPU, power subsystem and interface, and the functional unit to be electrically connected with CPU, this functional unit is connected with interface signal transfer, described power subsystem comprises power module, reserve battery module and battery charging module, described battery charging module and reserve battery model calling, and described charging cell module is connected with power module by interface, described power module provides the power supply of the controller of whole demarcation circuit breaker, also comprise liquid crystal display and keyboard unit, described liquid crystal display is connected with the signal input interface of CPU, the signal output interface of this CPU is connected with keyboard unit.
Further, the controller in CPU adopts STM32 family chip.
Further, the controller in CPU adopts microprocessor STM32F103RCT6.
Further, LCDs in described liquid crystal display selects 12864 type lattice lcds, this LCD MODULE is connected with interface U2, 5th pin of this interface U2 is connected with the collector electrode of a PNP type triode Q1, the emitter of this triode Q1 is connected with an output voltage of power module by a resistance R9, the base stage of triode Q1 is connected by resistance R8 one end, the other end of this resistance R8 connects the 36 pin of microprocessor STM32F103RCT6, 54 pin of described microprocessor STM32F103RCT6, 55 pin, 56 pin, 61 pin and the 62 pin pass through the 8th pin of a resistance and interface U2 successively, 9th pin, tenth pin, 11 pin is connected with the 12 pin, 7th pin of described microprocessor STM32F103RCT6 is connected with the voltage output end of power supply apparatus PWB2405MD-6W, 6th pin connects digital signal ground.
Further, the voltage output end of battery charging module is connected reserve battery and is connected with the voltage input end of power module by four switches and interface.
Further, described power module comprises three groups of module output circuits, first group of module output circuit comprises inductance L 3 and inductance L 4, wherein one end of inductance L 3 is connected with the output of battery charging module, the other end is all connected with two Input voltage terminals of power supply apparatus PWB2405MD-6W, one termination digital signal ground of inductance L 4, the other end of inductance L 4 is all held with two of power supply apparatus PWB2405MD-6W and is connected with connecing digital signal, and described two inductance L 3, L4 is connected by electric capacity C63 with power supply apparatus PWB2405MD-6W link, the voltage output end of described power supply apparatus PWB2405MD-6W is connected by electric capacity C62 with its 16 pin, and the 16 pin connects digital signal ground.
Further, functional unit comprises analogue signal circuit, switching signal circuit, divide-shut brake operation circuit, communicating circuit and indicator light display circuit.
The advantage that the utility model has and good effect are:
1, this controller shows each functional parameter and concrete numerical value by dot matrix type liquid crystal display screen, intuitive display, and function and displaying contents are more comprehensively.
2, operator is by access rights just modifiable parameter, protects setting data.
3, display circuit and control circuit are integrated on one piece of circuit board, have simplified circuit, decrease circuit board quantity, simultaneously when input power power-off, still can work within a certain period of time, line correlation of going forward side by side protection operation.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2 is CPU circuit diagram;
Fig. 3 is the first partial enlarged drawing of CPU circuit diagram;
Fig. 4 is the second partial enlarged drawing of CPU circuit diagram;
Fig. 5 is the 3rd partial enlarged drawing of CPU circuit diagram;
Fig. 6 is the 4th partial enlarged drawing of CPU circuit diagram;
Fig. 7 is the 5th partial enlarged drawing of CPU circuit diagram;
Fig. 8 is liquid crystal display screen display control circuit figure;
Fig. 9 is input through keyboard testing circuit figure;
Figure 10 is power circuit diagram;
Figure 11 is stand-by power supply circuit diagram;
Figure 12 is interface definition figure.
1, CPU 2, liquid crystal display 3, keyboard unit
4, power module 5, functional unit 6, interface
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.
A kind of controller of demarcation circuit breaker, it comprises CPU 1, power subsystem and interface, and the functional unit 5 to be electrically connected with CPU 1, this functional unit 5 is connected with interface 6 Signal transmissions, described power subsystem comprises power module 4, reserve battery module and battery charging module, described battery charging module and reserve battery model calling, and described battery charging module is connected with power module by interface 6, described power module 4 provides the power supply of the controller of whole demarcation circuit breaker, also comprise liquid crystal display 2 and keyboard unit 3, described liquid crystal display 2 is connected with the signal input interface of CPU 1, the signal output interface of this CPU 1 is connected with keyboard unit 3,
Described functional unit 5 comprises analogue signal circuit, switching signal circuit, divide-shut brake operation circuit, communicating circuit and indicator light display circuit.
As illustrated in figs. 2-7, the connected mode of described CPU 1 module each with it is: adopt microprocessor STM32F103RCT6 as core controller, described this microprocessor STM32F103RCT6 first pin is connected with digital signal ground by an electric capacity C3, this first pin is connected to draw with the 64 pin simultaneously and connects+3V3 voltage, second pin, three-prong and the 4th pin are all connected after a 10K resistance to be connected with voltage+3V3, a crystal oscillator Y1 is connected between 5th pin with the 6th pin, described crystal oscillator Y1 one end is connected with the electric capacity C1 connecing digital signal ground, the other end of crystal oscillator Y1 connects with the electric capacity C2 of same ground connection, 7th pin is connected by a resistance R14 and voltage+3V3, 7th pin is connected with the 3rd plug of three switch J0 simultaneously, second plug of three switches is connected with digital signal ground, and be connected by an electric capacity C5 with between the 3rd plug, first plug of described three J0 that open the light is connected with voltage+3V3 by resistance R15, an electric capacity C11 is connected between 12 pin of microprocessor STM32F103RCT6 and the tenth three-prong, electric capacity C10 is connected in parallel with described electric capacity C11, electric capacity C10 one end holds AGND to be connected with connecing digital signal with electric capacity C18's, the other end of electric capacity C10 is connected with voltage AV3.3, 18 pin, 31 pin, 60 three-prong and the 47 pin all connect digital signal ground, 20 pin, 32 pin is all connected with voltage+3V3 with the 48 pin, 28 pin is connected to two between series resistance R0 and R108, and another termination voltage+3V3 of resistance R0, the non-link of resistance R108 is connected with digital signal ground, 60 pin and one of microprocessor STM32F103RCT6 meets digital signal earth resistance R16 and is connected, this resistance R16 is connected with second plug of two switch J7, first plug and the voltage+3V3 of these two switch J7 connect, connected by an electric capacity C12 between 60 three-prong of microprocessor STM32F103RCT6 and the 64 pin.
Input through keyboard testing circuit module is the keyboard circuit of five enter keies, described five enter keies all have a pull-up resistor, and are connected with the 30 pin of microprocessor STM32F103RCT6, the 35 pin, the 30 three-prong, the 34 pin and the 29 pin successively simultaneously.
LCDs in described liquid crystal display selects 12864 type lattice lcds, this LCD MODULE is connected with interface U2, 5th pin of this interface U2 is connected with the collector electrode of a PNP type triode Q1, the emitter of this triode Q1 is connected with voltage+3V3 by a resistance R9, the base stage of triode Q1 is connected by resistance R8 one end, the other end of this resistance R8 connects the 36 pin of microprocessor STM32F103RCT6, 54 pin of described microprocessor STM32F103RCT6, 55 pin, 56 pin, 61 pin and the 62 pin pass through the 8th pin SCLK of a resistance and interface U2 successively, 9th pin SDA, tenth pin RS, 11 pin RESET is connected with the 12 pin CS, described 7th pin VDD is connected with the voltage output end VCC of power supply apparatus PWB2405MD-6W, 6th pin connects digital signal ground.
Described power module 4 comprises three groups of module output circuits, first group of module output circuit comprises inductance L 3 and inductance L 4, wherein one end of inductance L 3 is connected with the output of battery charging module, the other end is all connected with two Input voltage terminal Vin of power supply apparatus PWB2405MD-6W, one termination digital signal ground of inductance L 4, the other end of inductance L 4 all holds GND to be connected with connecing digital signal with two of power supply apparatus PWB2405MD-6W, and described two inductance L 3, L4 is connected by electric capacity C63 with power supply apparatus PWB2405MD-6W link, voltage output end+the Vo of described power supply apparatus PWB2405MD-6W is connected by electric capacity C62 with its 16 pin 0V, and the 16 pin 0V connects digital signal ground,
Second group of module output circuit comprises pressurizer REG1117-33, the input IN of described pressurizer REG1117-33 is connected with the voltage output end VCC of power supply apparatus PWB2405MD-6W, GND is held to be connected with connecing digital signal simultaneously by two electric capacity C56 in parallel and electric capacity C57 and this pressurizer REG1117-33, the output OUT of described pressurizer REG1117-33 with hold electric capacity C58 in parallel successively between GND with connecing digital signal, electric capacity C59, electric capacity C60 and electric capacity C61, series inductance L2 between electric capacity C59 and electric capacity C60, one end of electric capacity C61 is analog signal ground AGND, the other end is output voltage AV3.3, analog signal ground AGND is connected with digital signal ground by inductance L 5,
3rd group of module output circuit comprises linear voltage regulator TPS7333, the three-prong IN1 of this linear voltage regulator TPS7333 is connected with the 4th pin IN1 and is connected with the voltage output end VCC of power supply apparatus PWB2405MD-6W simultaneously, the first pin GND of linear voltage regulator TPS7333 is connected with the second pin/EN, and connect digital signal ground simultaneously, shunt capacitance C51 and electric capacity C52 successively between the first pin GND and the 4th pin IN1, the 5th pin OUT1 of described linear voltage regulator TPS7333, 6th pin OUT1 is connected with the 7th pin SENSE, eight pin/RESET is connected with the 5th pin OUT1 by a resistance R109, electric capacity C53, electric capacity C54 and electric capacity C55 is in parallel, and a rear node termination digital signal ground in parallel, another node side is connected with pin five OUT1 of linear voltage regulator TPS7333, be connected with one end of inductance L 1 in electric capacity C54 one end, this end is the first output+3V3, the other end of inductance L 1 is connected with electric capacity C55 one end of electric capacity C54 homonymy, and this end is the second output PLLV3.3.
Battery charging module model TBC120-220D24; the model of rechargeable battery is DJW12-7.0 (12V7.0AH); first pin of battery charging module input, three-prong, the second pin connect extraneous alternating current fire wire, zero line and ground wire respectively; and three-prong is held with zero line N be connected by fuse F1, a big current protective effect.Output is connected with two batteries of connecting and passes through four switch J5 and transmits and output signal;
When external world's interchange has electricity, battery charging module can be charged to battery, exports V24/G24 simultaneously, and connecting the input of power circuit, is load supplying, and when the external world exchanges dead electricity, battery discharges to power circuit, exports V24/G24.Battery charging module the 4th pin, the 5th pin are respectively and export battery undervoltage alarm, input dead electricity alarm signal.
The controller of this demarcation circuit breaker is also connected to electric capacity C6, C7, C8 and C9 in parallel, this parallel circuits respectively with voltage+3V3 and digital signal be connected.
As shown in Figure 1, liquid crystal screen module 2 circuit, keyboard & display detection module 3 circuit, power module 4 circuit, functional unit 5 are integrated on same circuit board, controlled by CPU 1, power module 4 circuit provides power supply for circuit all on plate, interface 6 provides the input/output signal of this circuit board, and the controller that stand-by power supply is demarcation circuit breaker provides stand-by power supply.
Shown in Fig. 2, CPU 1 is the core of circuit, and microprocessor adopts powerful ARM chip, and model is STM32F103RCT6, operating voltage 3.3V, adopts outside 8M crystal oscillator, and I/O mouth and PB mouth control liquid crystal display screen display and detect input through keyboard; And in functional unit 5, the input signal amount that A/D converter process gathers, PA mouth controls divide-shut brake, and transceiver port carries out communication, and STM32F103RCT6 chip internal has jumbo data storage and can preserve data power down and do not lose.
Fig. 8 is the interface definition of liquid crystal screen module and microprocessor, and each holding wire is connected to the corresponding PB port of STM32F103RCT6.Liquid crystal display screen is 12864 lattice lcds, can show Chinese, numeral and graphic symbol.RESET is liquid crystal display screen reset terminal, and STM32F103RCT6 is by the work of CS signal gating liquid crystal display screen, and control data line SDA and clock line SCLK sequential read or write Refresh Data liquid crystal display screen interface display, can be controlled the on and off of liquid crystal display screen backlight by LEDA;
Liquid crystal display screen interface can be checked each defencive function of controller, reclosing, real-time status, logout, time and GSM communication condition; display menu is divided into I and II menu; page-turnable is browsed; further menu is function or parameter name; second-level menu is concrete data or settings; data are four real numbers, containing integer and fraction data.
Fig. 9 is a keyboard entry the circuit diagram of detection, this circuit is connected to the corresponding PB port of STM32F103RCT6, in figure, K1-K5 button is touch-switch, be respectively upwarding key, right key, down Arrow, acknowledgement key and ESC Escape, during user operation keyboard, by detecting level height, STM32F103RCT6 judges that respective keys is pressed, and make respective handling;
Upwarding key and down Arrow are applicable to user and leaf through up and down display menu, during parameters, user needs to input password, right key is for adjusting numerical value, after input password correctly presses acknowledgement key, use right key can Update Table, by ESC Escape for returning upper level, the data of setting be all kept at the memory cell of STM32F103RCT6.
Figure 10 is power module figure, power supply V24/G24 is provided by battery charging module, power supply VCC is that liquid crystal display screen, remote control circuit and sub-switch circuit are powered, VCC through source of stable pressure PWR1 element transformation be+3V3 power supply, + 3V3 is CPU 1, keyboard is powered, VCC transfers another group power supply AV3.3 and AGND to through VR1, AV3.3 and AGND provides power supply for CPU 1 analog signal.
Figure 11 is the circuit of battery charging module, battery charging module model TBC120-220D24, when interchange has electricity, can charge to reserve battery, it is load power source circuit supply simultaneously, when exchanging dead electricity, reserve battery is to load power source circuit discharging, and the serial battery that described reserve battery is DJW12-7.0 by model forms.
Figure 12 is the interface 6 of circuit board and input circuit plate, interface 6 defines input power, On-off signal signal, analog input signal and divide-shut brake output signal, can check analog signal amount data by liquid crystal display screen, on-off state and divide-shut brake control information and state, interface definition is simple, simplify circuit structure, decrease circuit board quantity.
The controller internal configurations of the demarcation circuit breaker circuit board of display and control integration, on this circuit board, dot matrix type liquid crystal display screen, keyboard, indicator light, communicating circuit etc. are all connected with microprocessor STM32F103RCT6 control circuit, microprocessor is by judging input through keyboard state, control liquid crystal display screen shows, displaying contents is refreshed according to sequencing control, the numerical value that should preserve is stored in memory, and power down is not lost.And when operator's regulating key; the concrete numerical value of each defencive function parameter can be checked by liquid crystal display screen display menu; integer or decimal place all can be high-visible; also can check reclosing, real-time status, logout, time and GSM communication condition; displaying contents is comprehensive; as changed setting, operator then needs to input correct password, just can change.This controller is also configured with battery charging module and reserve battery composition stand-by power supply, when external world's input has electricity, is powered by the external world, when external world's input power-off, is powered by reserve battery.
Above embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model scope change and improve, and all should still belong within this patent covering scope.
Claims (7)
1. the controller of a demarcation circuit breaker, it is characterized in that: it comprises CPU (1), power subsystem and interface (6), and the functional unit (5) to be electrically connected with CPU (1), this functional unit (5) is connected with interface (6) Signal transmissions, described power subsystem comprises power module, reserve battery module and battery charging module, described battery charging module and reserve battery model calling, and described battery charging module is connected with power module by interface (6), described power module provides the power supply of the controller of whole demarcation circuit breaker, also comprise liquid crystal display (2) and keyboard unit (3), described liquid crystal display (2) is connected with the signal input interface of CPU (1), the signal output interface of this CPU (1) is connected with keyboard unit (3).
2. the controller of a kind of demarcation circuit breaker according to claim 1, is characterized in that: the controller in CPU (1) adopts STM32 family chip.
3. the controller of a kind of demarcation circuit breaker according to claim 1 and 2, is characterized in that: the controller in CPU (1) adopts microprocessor STM32F103RCT6.
4. the controller of a kind of demarcation circuit breaker according to claim 3, it is characterized in that: the LCDs in described liquid crystal display selects 12864 type lattice lcds, this LCD MODULE is connected with interface U2, 5th pin of this interface U2 is connected with the collector electrode of a PNP type triode Q1, the emitter of this triode Q1 is connected with an output voltage of power module by a resistance R9, the base stage of triode Q1 is connected by resistance R8 one end, the other end of this resistance R8 connects the 36 pin of microprocessor STM32F103RCT6, 54 pin of described microprocessor STM32F103RCT6, 55 pin, 56 pin, 61 pin and the 62 pin pass through the 8th pin of a resistance and interface U2 successively, 9th pin, tenth pin, 11 pin is connected with the 12 pin, 7th pin of described microprocessor STM32F103RCT6 is connected with the voltage output end of power supply apparatus PWB2405MD-6W, 6th pin connects digital signal ground.
5. the controller of a kind of demarcation circuit breaker according to claim 1, is characterized in that: the voltage output end of battery charging module is connected reserve battery and is connected with the voltage input end of power module by four switches and interface.
6. the controller of a kind of demarcation circuit breaker according to claim 5, it is characterized in that: described power module comprises three groups of module output circuits, first group of module output circuit comprises inductance L 3 and inductance L 4, wherein one end of inductance L 3 is connected with the output of battery charging module, the other end is all connected with two Input voltage terminals of power supply apparatus PWB2405MD-6W, one termination digital signal ground of inductance L 4, the other end of inductance L 4 is all held with two of power supply apparatus PWB2405MD-6W and is connected with connecing digital signal, and described two inductance L 3, L4 is connected by electric capacity C63 with power supply apparatus PWB2405MD-6W link, the voltage output end of described power supply apparatus PWB2405MD-6W is connected by electric capacity C62 with its 16 pin, and the 16 pin connects digital signal ground.
7. the controller of a kind of demarcation circuit breaker according to claim 1, is characterized in that: functional unit (5) comprises analogue signal circuit, switching signal circuit, divide-shut brake operation circuit, communicating circuit and indicator light display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420399401.4U CN204068426U (en) | 2014-07-17 | 2014-07-17 | A kind of controller of demarcation circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420399401.4U CN204068426U (en) | 2014-07-17 | 2014-07-17 | A kind of controller of demarcation circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204068426U true CN204068426U (en) | 2014-12-31 |
Family
ID=52209872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420399401.4U Active CN204068426U (en) | 2014-07-17 | 2014-07-17 | A kind of controller of demarcation circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204068426U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877297A (en) * | 2017-03-22 | 2017-06-20 | 长沙久信电力设备有限公司 | Intelligent protection controller |
-
2014
- 2014-07-17 CN CN201420399401.4U patent/CN204068426U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877297A (en) * | 2017-03-22 | 2017-06-20 | 长沙久信电力设备有限公司 | Intelligent protection controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104111390A (en) | Device for realizing automatic powering-on/off test | |
| CN104518482A (en) | Intelligent comprehensive protective device with multiple communication modes for low-voltage motors | |
| CN204068426U (en) | A kind of controller of demarcation circuit breaker | |
| CN204927708U (en) | Row is inserted to intelligence | |
| CN111245100A (en) | Intelligent Internet of things single-phase multifunctional power monitoring terminal and method | |
| CN106707019A (en) | Service robot electric quantity monitoring device | |
| CN204101665U (en) | Based on the electric instrument supervisory system of MODBUS | |
| CN207424583U (en) | A kind of switching on and shutting down management circuit and terminal | |
| CN201985387U (en) | Multifunctional electricity-metering multi-outlet socket | |
| CN202602004U (en) | Multifunctional intelligent socket | |
| CN206790159U (en) | Power-supply controller of electric, component and weighing device | |
| CN202840130U (en) | Intelligent socket | |
| CN107959187A (en) | A kind of Multifunctional measuring socket | |
| CN108398594A (en) | A kind of intelligent simulation three-phase electric energy meter | |
| CN205942683U (en) | Self -actuated control multichannel communication station receives / sends out operating time's platform | |
| CN209198631U (en) | A kind of fire-fighting equipment power supply monitoring system | |
| CN207337389U (en) | A kind of computer monitoring circuit and desktop computer | |
| CN202997213U (en) | Multifunctional socket | |
| CN2667768Y (en) | Intelligent motor controller | |
| CN201204462Y (en) | Control execution module | |
| CN104749546A (en) | Novel type-III specific power transformer acquisition terminal testing device and testing method thereof | |
| CN212229020U (en) | Three-phase safety electric meter | |
| CN107894729A (en) | A kind of 2.4G wireless cascades sequential device | |
| CN203572897U (en) | Intelligent monitoring system for transmission equipment power distribution column cabinet | |
| CN210572556U (en) | Intelligent electric power safety information acquisition device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |