CN207198200U - A kind of electric energy metered system and its electric power meter - Google Patents
A kind of electric energy metered system and its electric power meter Download PDFInfo
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- CN207198200U CN207198200U CN201720658037.2U CN201720658037U CN207198200U CN 207198200 U CN207198200 U CN 207198200U CN 201720658037 U CN201720658037 U CN 201720658037U CN 207198200 U CN207198200 U CN 207198200U
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Abstract
It the utility model is related to technical field of electric power, disclose a kind of electric energy metered system and its electric power meter, do not include power module in electric power meter, by the way that n electric power meter is sequentially connected in series and electrically connected with control device, control device carries out voltage conversion to civil power, and export direct current and powered for n electric power meter, each electric power meter is measured to the power consumption of connected user load, and electric energy metrical value is exported to control device.Because the electric energy of each electric power meter provides by control device, therefore power module need not be set inside electric power meter, reduce the volume of electric power meter, be advantageous to electric power meter installation, and reduce cost；Simultaneously as the zero line port of n electric power meter is connected to the zero line port of control device, therefore zero line of each electric power meter without the connection civil power of external circuit again altogether by way of being sequentially connected electrically, the wiring of whole system is simplified.
Description
Technical field
It the utility model is related to technical field of electric power, more particularly to a kind of electric energy metered system and its electric power meter.
Background technology
Electric power meter is the device for metering user power consumption.Existing Multi-user electrical energy metering system is to pass through
Control unit controls several electric power meters to be measured respectively to the power consumption of different user.Control unit and each electricity
Energy metering device is both needed to connect the live wire and zero line of civil power by outside cabling, and wiring is complicated；And in each electric power meter
Include independent power module, powered for civil power to be converted into direct current for its internal each functional module, due to each electricity
The space shared by power module in energy metering device is larger, causes the volume of whole electric power meter to increase, is unfavorable for electricity
The installation of energy metering device, and cost is higher.
In summary, there is wiring complexity in existing electric energy metered system, and the volume of electric power meter is larger, is unfavorable for
Installation, and the problem of cost is higher.
Utility model content
The purpose of this utility model is to provide a kind of electric energy metered system and its electric power meter, it is intended to solves existing
The existing wiring of electric energy metered system it is complicated, the volume of electric power meter is larger, is unfavorable for installing, and cost is higher asks
Topic.
The utility model is achieved in that a kind of electric power meter, and the n electric power meters are from the 1st electricity
Energy metering device starts to (n-1)th electric power meter, the second zero line port, the second source end of each electric power meter
Mouth and the first zero line port with the latter electric power meter, the first power port and the first communication respectively of the second PORT COM
Port electrically connects, and the first zero line port, the first power port and the first PORT COM of the 1st electric power meter point
Do not electrically connected with zero line port, power port and the PORT COM of the control device of the electric energy metered system, the electric energy meter
Measure device the first zero line port, the first power port and the first PORT COM respectively with its second zero line port, second source
Port and the electrical connection of the second PORT COM, the zero line and zero line side of the control device connect with the live wire and zero line of civil power respectively
Connect, the live wire input of the n electric power meters is connected with the live wire, the live wire of the n electric power meters
Zero line side of the output end respectively with different user load is connected, and the zero line of the user load is connected with the live wire；N is just
Integer；
The electric power meter includes sampling module, metering module, the second control module and the 3rd communication module；
The sampling module is connected between the live wire input of the electric power meter and fire wire output end, the meter
Measure module first input end and the second input respectively with the output end of the sampling module and the electric power meter
Zero line port electrically connects, the input and communication terminal of second control module output end with the metering module and institute respectively
State the first communication terminal connection of the 3rd communication module, the power end of second control module and the electricity of the electric power meter
Source port electrically connects, and the second communication terminal of the 3rd communication module electrically connects with the PORT COM of the electric power meter；
The control device carries out voltage conversion to the civil power, and it is described in n to export direct current by its power port
Individual electric power meter power supply；The sampling module is sampled to the electric current and voltage of corresponding user load, and is exported and taken
Sample value is to the metering module；The metering module measures according to the sampling value to the power consumption of the user load,
And electric energy metrical value is exported to second control module；The electric energy metrical value is passed through described by second control module
Three communication modules are exported to the control device.
Further, the electric power meter also includes controlling switch；The controlling switch is connected to the sampling mold
Between the fire wire output end of block and the electric power meter；
Second control module receives the folding control that user is sent by the control device and instructed, and according to described
Folding control instruction carries out folding control to the controlling switch.
Further, the electric power meter also includes display module, the display module and the described second control mould
Block connects；
The display module is shown to the power information of corresponding user load.
Further, the electric power meter also includes the second memory module, second memory module and described the
Two control modules connect；
Second memory module stores to the electric energy metrical value that the metering module exports.
The utility model additionally provides a kind of electric energy metered system, including control device, and the electric energy metered system also wraps
Include above-mentioned electric power meter；
The control device includes power module, the first control module, the first communication module and the second communication module；
The negative input end and positive input terminal of the power module are respectively the zero line and zero line side of the control device, institute
The positive input terminal for stating power module also electrically connects with the zero line port of the control device, the output end of the power module and institute
The power end connection of the first control module is stated, the power port of the output end of the power module also with the control device is electrically connected
Connect, the first communication terminal and the second communication terminal of first control module the first communication terminal with first communication module respectively
Connected with the first communication terminal of second communication module, the second communication terminal and the control device of first communication module
PORT COM electrical connection；
Civil power described in the electric power source pair of module carries out voltage conversion, and exports direct current as first control module, institute
The first communication module and second communication module power supply are stated, meanwhile, the power supply that the power module passes through the control device
Port output direct current is the n electric power meter power supplies；First communication module passes through the logical of the control device
Interrogate the electric energy metrical value that port receives the described electric power meters outputs of n, and the electric energy metrical value is sent to described the
One control module, first control module send the electric energy metrical value by second communication module whole to user
End.
Further, the control device also includes the first memory module；First memory module and the described first control
Molding block connects；
The electric energy metrical value that first memory module is sent to the n electric power meters stores.
Do not include power module in electric power meter provided by the utility model, by by n electric power meter according to
Secondary to concatenate and be electrically connected with control device, control device carries out voltage conversion to civil power, and is exported by its power port
Direct current is that n electric power meter is powered, and each electric power meter is carried out to the power consumption of connected user load
Metering, and electric energy metrical value is exported to control device by its first PORT COM.Due to the electric energy of each electric power meter
There is provided by control device, therefore power module need not be set inside electric power meter, reduce the body of electric power meter
Product, be advantageous to electric power meter installation, and reduce cost；Simultaneously as the zero line port of n electric power meter passes through
The mode being sequentially connected electrically is connected to the zero line port of control device altogether, therefore each electric power meter connects without external circuit again
The zero line of civil power is connect, simplifies the wiring of whole system.
Brief description of the drawings
Fig. 1 is a kind of structured flowchart of the electric power meter for electric energy metered system that the utility model embodiment provides；
Fig. 2 is a kind of structural frames of the electric power meter for electric energy metered system that another embodiment of the utility model provides
Figure；
Fig. 3 is a kind of structured flowchart for electric energy metered system that the utility model embodiment provides.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
It is a kind of structure of the electric power meter for electric energy metered system that the utility model embodiment provides referring to Fig. 1
Block diagram.For convenience of description, the part related to the utility model embodiment is illustrate only, details are as follows：
As shown in figure 1, a kind of electric power meter of electric energy metered system, n (n is positive integer) individual electric power meter
21~2n is since the 1st electric power meter 21 to (n-1)th electric power meter 2 (n-1), each electric power meter
(21,22 ... or 2 (n-1) etc.) the second zero line port a2, second source port b2 and the second PORT COM c2 respectively with
The first zero line port a1, the first power port b1 of the latter electric power meter and the first PORT COM c1 electrical connections, and the 1st
The first zero line port a1, the first power port b1 and the first PORT COM c1 of individual electric power meter 21 respectively with electric energy metrical
Zero line port a, power port b and PORT COM the c electrical connection of the control device 1 of system, each electric power meter (21,
22nd ... or 2n etc.) the first zero line port a1, the first power port b1 and the first PORT COM c1 respectively with its 2nd 0
Line end mouth a2, second source port b2 and the second PORT COM c2 electrical connections；The zero line and zero line side of control device 1 respectively with
The live wire L of civil power is connected with zero line N, and n 21~2n of electric power meter live wire input is connected with live wire L, n electric energy
Zero line side of 21~2n of the metering device fire wire output end respectively with different user load is connected, zero line and the fire of user load
Line L connections.
Electric power meter (21,22 ... or 2n etc.) include sampling module 201, metering module 202, second control mould
The communication module 204 of block 203 and the 3rd.
Sampling module 201 is connected between the live wire input of electric power meter and fire wire output end, metering module 202
First input end and the second input respectively with the output end of sampling module 201 and the zero line port (a1 of electric power meter
Or a2) electrical connection, input and the communication terminal output end with metering module 202 and the threeway respectively of the second control module 203
Interrogate the first communication terminal connection of module 204, the power end of the second control module 203 and the power port (b1 of electric power meter
Or b2) electrical connection, the second communication terminal of the 3rd communication module 204 and the PORT COM (c1 or c2) of electric power meter are electrically connected
Connect.
Control device 1 carries out voltage conversion to civil power, and it is n electric energy metrical to export direct current by its power port b
21~2n of device powers；Sampling module 201 is sampled to the electric current and voltage of corresponding user load, and exports sampling value extremely
Metering module 202；Metering module 202 measures according to sampling value to the power consumption of user load, and exports electric energy metrical value
To the second control module 203；Electric energy metrical value is exported to control and filled by the second control module 203 by the 3rd communication module 204
Put.
In embodiments of the present invention, when n be 1, i.e., when electric energy metered system only includes an electric power meter, the electric energy
The first zero line port a1, the first power port b1 and the first PORT COM c1 of metering device zero lines with control device 1 respectively
Port a, power port b and PORT COM c electrical connections.
In the utility model embodiment, 21~2n of electric power meter the first zero line port a1, the first power port
B1 and the first PORT COM c1 could be arranged to card aciculiform shape, 21~2n of electric power meter the second zero line port a2, second
Zero line port a, power port b and the PORT COM c of power port b2 and the second PORT COM c2 or control device can be set
It is set to neck shape corresponding with the first zero line port a1, the first power port b1 and the first PORT COM c1 difference, card pin card
It is connected in neck, so as to realize that the first zero line port a1, the first power port b1 and first of the 1st electric power meter 21 are logical
Interrogate port c1 and zero line port a, the power port b of control device 1 and PORT COM c electrical connection, and previous electric energy meter
Measure the of the second zero line port a2, second source port b2 and the second PORT COM c2 and the latter electric power meter of device
One zero line port a1, the first power port b1 and the first PORT COM c1 electrical connection.Certainly, by 21~2n of electric power meter
The first zero line port a1, the first power port b1 and the first PORT COM c1 be arranged to neck shape, by electric power meter
21~2n the second zero line port a2, second source port b2 and the second PORT COM c2 or the zero line port a of control device,
Power port b and PORT COM c could be arranged to card aciculiform shape, can equally realize electric power meter and electric power meter
Or the electrical connection between electric power meter and control device 1.The electricity between two devices is realized above by the mode of clamping
Connection, not only reduces the outside cabling of system, simplifies the wiring of system, and the mode user Ke Gen for passing through clamping
Flexible configuration is carried out to the quantity of electric power meter according to actual demand.
In the utility model embodiment, control device 1 by the zero line of civil power by leading to its zero line port a inside it,
First zero line port a1 of the 1st electric power meter 21 electrically connects with the zero line port a of control device 1, the latter electric energy meter
First zero line port a1 of amount device electrically connects with the second zero line port a2 of previous electric power meter, and each electric energy meter
First zero line port a1 of amount device electrically connects with its second zero line port a2 inside electric power meter, i.e. n electric energy meter
The zero line port of amount device is connected to the zero line port a of control device 1 altogether by way of being sequentially connected electrically, so that each electricity
Zero line of the energy metering device without connecting civil power by outside line again, simplify the wiring of system.
In the utility model embodiment, civil power is carried out voltage conversion by control device 1, and defeated by its power port b
Go out direct current to power for each electric power meter, power module need not be set inside electric power meter, so as to reduce electricity
The volume of energy metering device, is advantageous to the installation of electric power meter, and reduce cost.
In the utility model embodiment, sampling module 201 can be transformer or manganese copper diverter, i.e., by transformer or
Manganese copper diverter is serially connected between the live wire input of electric power meter and fire wire output end, and the electricity to user load can be achieved
The detection of stream or voltage.In actual applications, sampling module 201 can also be the circuit that other can carry out curtage sampling
Or component, it is not limited herein.
In embodiments of the present invention, metering module 202 can use the existing electric energy using electric energy computation chip as core
Metering circuit, for example, the ic for energy metering using model RN8209G computation chip as core is used, with specific reference to reality
Demand is configured, and is not limited herein.
In the utility model embodiment, the second control module 203 can use CPU (Central Processing
Unit, central processing unit), MCU (Microcontroller Unit, micro-control unit) or single-chip microcomputer etc., be not limited herein.
In the utility model embodiment, the 3rd communication module 204 can use RS485 communication interfaces, certainly, threeway
News module 204 can also use other to realize the serial communication interface of similar functions, be configured with specific reference to actual demand,
It is not limited herein.
It is a kind of electric power meter of electric energy metered system of another offer of the utility model embodiment referring to Fig. 2
Structured flowchart.For convenience of description, the part related to the utility model embodiment is illustrate only, details are as follows：
As shown in Fig. 2 as the embodiment of the utility model one, electric power meter (21,22 ... or 2n etc.) also wrap
Include controlling switch 205.Controlling switch 205 is connected between sampling module 201 and the fire wire output end of electric power meter.
Second control module 203 receives the folding control that user is sent by control device 1 and instructed, and according to folding control
Instruction carries out folding control to controlling switch 205.
In actual applications, controlling switch 205 can be relay or the on-off circuit being made up of switching tube etc., specific root
It is configured according to actual demand, is not limited herein.
In the utility model embodiment, when the non-electricity payment of a certain user, user can be sent by user terminal
Folding control instructs (such as cut-offing instruction) to control device 1, control device 1 that the folding control received instruction is passed through into communication
Port c is sent to corresponding electric power meter, and the second control module 203 in corresponding electric power meter is according to folding control
Instruction control controlling switch 205 disconnects, and then stops powering for corresponding user load, it is achieved thereby that to user load break-make
The remote control of electricity.
As the embodiment of the utility model one, electric power meter (21,22 ... or 2n etc.) also include display module
(not shown), display module are connected with the second control module 203, power information of the display module to corresponding user load
Shown.
In actual applications, display module can be LCDs or LED display, be carried out with specific reference to actual demand
Set, be not limited herein.
As the embodiment of the utility model one, electric power meter (21,22 ... or 2n etc.) also include the second storage
Module (not shown), the second memory module are connected with the second control module 203.
The electric energy metrical value that second memory module exports to metering module 202 stores.
It is a kind of structured flowchart for electric energy metered system that the utility model embodiment provides referring to Fig. 3.For the ease of saying
It is bright, the part related to the utility model embodiment is illustrate only, details are as follows：
As shown in figure 3, a kind of electric energy metered system, including control device 1, in addition to n above-mentioned electric power meters.
Wherein, control device 1 includes power module 10, the first control module 11, the first communication module 12 and the second communication
Module 13.
The negative input end and positive input terminal of power module 11 are respectively the zero line and zero line side of control device 1, power supply mould
The positive input terminal of block 11 also electrically connects with the zero line port a of control device 1, the output end of power module 11 and the first control module
11 power end connection, the output end of power module 11 also electrically connect with the power port b of control device 1, the first control module
11 the first communication terminal and the second communication terminal respectively with the first communication terminal of the first communication module 12 and the second communication module 13
First communication terminal connects, and the second communication terminal of the first communication module 12 electrically connects with the PORT COM c of control device 1.
It is understood that in the utility model embodiment, power module 10 also with the first communication module 12 and second
Communication module 13 connects (not shown).
Power module 10 carries out voltage conversion to civil power, and exports direct current and communicate mould for the first control module 11, first
The communication module 13 of block 12 and second is powered, meanwhile, it is n that power module 11 exports direct current by the power port b of control device 1
Individual electric power meter 21~22 is powered；First communication module 12 receives n electric energy meter by the PORT COM c of control device 1
The electric energy metrical value that device 21~22 exports is measured, and electric energy metrical value is sent to the first control module 11, the first control module
11 send electric energy metrical value to user terminal by the second communication module 13.
In actual applications, power module 10 can use existing including transformer, rectification filtering unit and voltage turn
Unit etc. is changed, for electric main to be converted to the power module of direct current.In the utility model embodiment, power module 10
The voltage of the direct current of output can be 16V or 5V, be configured with specific reference to actual demand, be not limited herein.
In the utility model embodiment, live wire be voltage, the public basic point of current sampling, i.e., live wire for " " point,
That is the live wire inside control device 1 or electric power meter 21~22 in the utility model embodiment is connected to ground altogether.
In the utility model embodiment, the first control module 11 can use CPU (Central Processing
Unit, central processing unit), MCU (Microcontroller Unit, micro-control unit) or single-chip microcomputer etc., be not limited herein.
In the utility model embodiment, the first communication module 12 can use RS485 communication interfaces, and certainly, first is logical
News module 12 can also use other to realize the serial communication interface of similar functions, be configured with specific reference to actual demand,
It is not limited herein.
In the utility model embodiment, the second communication module 13 can be wireless communication module, be specifically as follows bluetooth
Communication module or wifi communication modules etc., are not limited herein.
In the utility model embodiment, user terminal can be the intelligent terminals such as mobile phone, tablet personal computer, desktop computer,
For realizing the real-time monitoring to user power utilization amount.
In the utility model embodiment, control device 1 is by the zero line N of civil power by leading to its zero line port inside it
A, it is that n electric power meter 21~22 provides public zero curve contact so that the electric power meter of electric power meter 21~22
Without the zero line N connections of external circuit and civil power again, so as to simplify system wiring.Meanwhile the power module in control device 1
10 can be that electric power meter 21~22 provides electric energy by power interface b, can be saved in each electric power meter 21~22
A power module is saved, not only reduces the volume of electric power meter, and reduces cost.
In the utility model embodiment, when the non-electricity payment of a certain user, user can be sent by user terminal
Folding control instructs (such as cut-offing instruction), and the second communication module 13 in control device 1 is opened what is received to control device 1
Close control instruction and send to the first control module 11, the first control module 11 and folding control instruction is passed through into the first communication module 12
Send to corresponding electric power meter, the second control module 203 in corresponding electric power meter instructs according to folding control
Control controlling switch 206 disconnects, and then stops powering for corresponding user load, it is achieved thereby that to user load power on/off
Remote control.
As the embodiment of the utility model one, control device 1 also includes the first memory module (not shown)；First deposits
Storage module is connected with the first control module 11.
The electric energy metrical value that first memory module 11 is sent to n electric power meter 21~22 stores.
Do not include power module in the electric power meter that the utility model embodiment provides, by by n electric energy metrical
Device is sequentially connected in series and is electrically connected with control device, and control device carries out voltage conversion to civil power, and passes through its power end
Mouth output direct current is that n electric power meter is powered, electricity consumption of each electric power meter to connected user load
Amount is measured, and exports electric energy metrical value to control device by its first PORT COM.Due to each electric power meter
Electric energy provided by control device, therefore electric power meter inside power module need not be set, reduce electric energy metrical dress
The volume put, be advantageous to electric power meter installation, and reduce cost；Simultaneously as the zero line side of n electric power meter
Mouth is connected to the zero line port of control device altogether by way of being sequentially connected electrically, therefore each electric power meter is without external again
The zero line of connection civil power, simplify the wiring of whole system.
Preferred embodiment of the present utility model is these are only, it is all in this practicality not to limit the utility model
All any modification, equivalent and improvement made within new spirit and principle etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (6)
1. a kind of electric power meter of electric energy metered system, it is characterised in that n electric power meters are from the 1st electricity
Energy metering device starts to (n-1)th electric power meter, the second zero line port, the second source end of each electric power meter
Mouth and the first zero line port with the latter electric power meter, the first power port and the first communication respectively of the second PORT COM
Port electrically connects, and the first zero line port, the first power port and the first PORT COM of the 1st electric power meter point
Do not electrically connected with zero line port, power port and the PORT COM of the control device of the electric energy metered system, the electric energy meter
Measure device the first zero line port, the first power port and the first PORT COM respectively with its second zero line port, second source
Port and the electrical connection of the second PORT COM, the zero line and zero line side of the control device connect with the live wire and zero line of civil power respectively
Connect, the live wire input of the n electric power meters is connected with the live wire, the live wire of the n electric power meters
Zero line side of the output end respectively with different user load is connected, and the zero line of the user load is connected with the live wire；N is just
Integer；
The electric power meter includes sampling module, metering module, the second control module and the 3rd communication module；
The sampling module is connected between the live wire input of the electric power meter and fire wire output end, the metering mould
The first input end of block and the second input respectively with the output end of the sampling module and the zero line of the electric power meter
Port electrically connects, the input and communication terminal of second control module respectively with the output end of the metering module and described the
The first communication terminal connection of three communication modules, the power end of second control module and the power end of the electric power meter
Mouth electrical connection, the second communication terminal of the 3rd communication module electrically connect with the PORT COM of the electric power meter；
The control device carries out voltage conversion to the civil power, and it is an electricity described in n to export direct current by its power port
Can metering device power supply；The sampling module is sampled to the electric current and voltage of corresponding user load, and exports sampling value
To the metering module；The metering module measures according to the sampling value to the power consumption of the user load, and defeated
Go out electric energy metrical value to second control module；The electric energy metrical value is passed through the threeway by second control module
News module is exported to the control device.
2. electric power meter as claimed in claim 1, it is characterised in that the electric power meter is also opened including control
Close；The controlling switch is connected between the fire wire output end of the sampling module and the electric power meter；
Second control module receives the folding control that user is sent by the control device and instructed, and according to the folding
Control instruction carries out folding control to the controlling switch.
3. electric power meter as claimed in claim 1, it is characterised in that the electric power meter also includes display mould
Block, the display module are connected with second control module；
The display module is shown to the power information of corresponding user load.
4. electric power meter as claimed in claim 1, it is characterised in that the electric power meter also includes the second storage
Module, second memory module are connected with second control module；
Second memory module stores to the electric energy metrical value that the metering module exports.
5. a kind of electric energy metered system, including control device, it is characterised in that the electric energy metered system also includes right such as will
Seek the electric power meter described in 1 to 4 any one；
The control device includes power module, the first control module, the first communication module and the second communication module；
The negative input end and positive input terminal of the power module are respectively the zero line and zero line side of the control device, the electricity
The positive input terminal of source module also electrically connects with the zero line port of the control device, the output end of the power module and described the
The power end connection of one control module, the power port of the output end of the power module also with the control device electrically connect,
The first communication terminal and the second communication terminal of first control module respectively with the first communication terminal of first communication module and
The first communication terminal connection of second communication module, the second communication terminal and the control device of first communication module
PORT COM electrically connects；
Civil power described in the electric power source pair of module carries out voltage conversion, and exports direct current as first control module, described the
One communication module and second communication module power supply, meanwhile, the power port that the power module passes through the control device
It is the n electric power meter power supplies to export direct current；The communication terminal that first communication module passes through the control device
Mouth receives the electric energy metrical value of the n electric power meters output, and the electric energy metrical value is sent to the described first control
Molding block, first control module send the electric energy metrical value to user terminal by second communication module.
6. electric energy metered system as claimed in claim 5, it is characterised in that the control device also includes the first storage mould
Block；First memory module is connected with first control module；
The electric energy metrical value that first memory module is sent to the n electric power meters stores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720658037.2U CN207198200U (en) | 2017-06-06 | 2017-06-06 | A kind of electric energy metered system and its electric power meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720658037.2U CN207198200U (en) | 2017-06-06 | 2017-06-06 | A kind of electric energy metered system and its electric power meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207198200U true CN207198200U (en) | 2018-04-06 |
Family
ID=61784922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720658037.2U Active CN207198200U (en) | 2017-06-06 | 2017-06-06 | A kind of electric energy metered system and its electric power meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207198200U (en) |
-
2017
- 2017-06-06 CN CN201720658037.2U patent/CN207198200U/en active Active
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