CN105403742B - Single-phase intelligent electric energy meter based on real-time collection residual current technology - Google Patents
Single-phase intelligent electric energy meter based on real-time collection residual current technology Download PDFInfo
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Abstract
It is an object of the invention to solve the problems of prior art, a kind of single-phase intelligent electric energy meter based on real-time collection residual current technology, actively investigation electric leakage are found.Including housing, terminal block, phase line, zero line, relay, residual current transformer, terminal block is fixedly mounted on housing；Phase line and zero line are arranged in housing, amplifier, and the input of amplifier and the output end of residual current transformer are connected, and the output signal of residual current transformer is amplified；Comparator, the input of comparator are connected with the output end of amplifier, using after the amplification of the output signal of residual current transformer as inputting compared with threshold value set in advance and export comparative result signal；Single-chip microcomputer, single-chip microcomputer include middle fracture, and the middle fracture of single-chip microcomputer is connected with the output end of comparator, the control line of the output end connection relay of single-chip microcomputer, the single-chip microcomputer comparative result signal output relay control signal that fracture receives in.Improve the real-time of investigation.
Description
Technical field
The invention belongs to power domain, and in particular to the single-phase intelligent electric energy meter based on real-time collection residual current technology.
Background technology
The A of Publication No. CN 104374964 innovation and creation disclose a kind of electric energy meter of measurable residual current, including
Housing, terminal block, phase line, zero line, relay, phase line current sampling resistor, residual current transformer and circuit arrangement；After
Electrical equipment, phase line current sampling resistor and residual current transformer are arranged in housing；Phase line and zero line are mutual through residual current
Sensor；Circuit arrangement include voltage sample module, signal processing module, A/D modular converters, electric energy metering module, at single-chip microcomputer
Manage module, relay control module, communication module, LCD display module, key-press module and power module.The innovation and creation can be real
Now the residual current in subscribers' line is measured, recorded, and there is residual current overload alarm event and logout work(
Can, it need to be only improved on existing intelligent electric meter, improving cost is not high, and does not influence the function and profile of existing electric energy meter
Size, it is easy to be widely applied, its deficiency is：Real-time is not strong, and for intelligent electric energy meter, it realizes many complicated work(
Can, the single task operating system of use, real-time, freedom switching is unable between task, and residual current value is passive for single-chip microcomputer
Obtain, former mode is can not to read residual current value in real time, and only single-chip microcomputer, which switches to, reads computation chip residual current value
During task, single-chip microcomputer could whether superthreshold judges to this value, and for detecting residual current essence, electric leakage is in itself
There is randomness and sudden, if do not used interrupt mode, so necessarily can not real-time capture electric leakage exist.On the other hand,
Using the relay construction with residual current transformer of integration, the layout inside Intelligent Optimal electric energy meter, discrete is avoided
Structural wiring is messy and uses caused short-circuit electric shock accidents after aging for a long time, a greater degree of to ensure Electrical Safety and electricity
The stabilization of net.
The content of the invention
It is an object of the invention to solve the problems of prior art, find a kind of based on collection residual current in real time
The single-phase intelligent electric energy meter of technology, the residual current in single-phase electrical system can be detected in real time, and traditional passive investigation is leaked
Active investigation mode is electrically updated to, improves the real-time of investigation.
In order to realize the purpose, the present invention is the single-phase intelligent electric energy meter based on real-time collection residual current technology, is wrapped
Include housing, terminal block, phase line, zero line, the relay for controlling phase line break-make, the residue electricity for measuring residual current
Current transformer, terminal block are fixedly mounted on housing；Relay, residual current transformer, phase line and zero line are arranged on shell
In vivo, in addition to：
Amplifier, the input of the amplifier and the output end of residual current transformer connect, by residual current mutual inductance
The output signal amplification of device；
Comparator, the input of the comparator are connected with the output end of amplifier, by the output of residual current transformer
It is used as input compared with reference threshold set in advance after signal amplification and exports comparative result signal；
Single-chip microcomputer, the single-chip microcomputer include middle fracture, and the middle fracture of single-chip microcomputer is connected with the output end of comparator, single-chip microcomputer
Output end connection relay control line, single-chip microcomputer according in fracture receive comparative result signal output Control believe
Number.
Preferably, the relay includes contact, and the contact of the relay is arranged in phase line to control the logical of phase line
It is disconnected.
Preferably, after singlechip interruption mouth receives the comparative result signal of comparator output, the current leakage of single-chip microcomputer record
Time of origin that electric current transfinites, leakage current value size, charge value this moment.Can be by communication port copy reading or by time showing aobvious
On showing device or active reporting, while it can also carry out early warning.
Preferably, the PWM of the single-chip microcomputer or timer output end mouth are connected with comparator reference value input port, the list
Piece machine adjusts the threshold value of comparator by PWM or timer, so as to adjust leakage current test threshold value.
Preferably, described terminal block includes the first binding post, the second binding post, the 3rd binding post and the
Four binding posts；One end of zero line electrically connects with the 3rd binding post；The other end of zero line electrically connects with the 4th binding post；Institute
The relay and residual current transformer stated are arranged in housing；One end of phase line is connected with the first binding post, phase line
The other end is connected with the second binding post, and residual current transformer is arranged at phase line and zero line mutually close place, and phase line and zero line
Through residual current transformer.
Preferably, relay and residual current transformer integrative packaging.Optimize internal wiring structure, reduce Electrical Safety
Hidden danger, improve electricity consumption reliability.
Preferably, encapsulating shell is provided with the housing, the relay is arranged in encapsulating shell with residual current transformer,
The encapsulating shell lower end is fixedly connected with sheet metal, and the encapsulating shell is fixed by sheet metal and terminal block.Realize relay
The integrative packaging of device and residual current transformer, optimize internal wiring structure, reduce Electrical Safety hidden danger, it is reliable to improve electricity consumption
Property, it is connected by sheet metal with terminal block, easy for installation, sheet metal can be used as connector by phase line and terminal block electricity
Connection electrically connects zero line with terminal block.
Preferably, the fixed part for being used for fixing zero line, phase line and residual current transformer is provided with the encapsulating shell, it is described
Fixed part includes slidably setting upper slide on the package up and down and slidably sets lower skateboard on the package up and down,
The lower skateboard is located at upper slide lower end, and the upper slide upper end is provided with the upper mounted plate being horizontally installed on encapsulating shell, described
Upper spring is provided between upper mounted plate and upper slide, the upper spring upper end is fixedly connected with upper mounted plate, lower end and upper slide
It is fixedly connected, the lower skateboard lower end is provided with the bottom plate being horizontally installed on encapsulating shell, the lower skateboard and bottom plate
Between be provided with lower spring, the lower spring lower end is fixedly connected with bottom plate, upper end and lower skateboard are connected.It is easy to fixed residue
Current transformer, zero line and item line.
Preferably, the upper slide both ends are equipped with the upper circuit fixing device for fixing zero line or phase line, the envelope
Dress shell is vertically and fixedly provided with the upper deflector apron corresponding with upper circuit fixing device position at being located above upper slide, described to reach the standard grade
Road fixing device includes the upper straight rod being vertically fixed on upper slide, and the upper straight rod is rotatably connected to that one end away from upper slide
Upper thread jamming part, the upper thread jamming part include being opened from top to bottom towards upper slide side inclined upper inclined portion, bottom for top
Upper half circular arc Access Division mouthful facing forward, it is rotatablely connected with upper straight rod in the middle part of upper thread jamming part, upper inclined portion deflector apron upwardly
That one end is semicircular arc, and that side of upper deflector apron circuit fixing device upwardly is provided with upper guide groove, it is described on
Guide groove anterior-posterior length is more than the length of upper inclined portion, and the upper guide groove tilts obliquely from front to back, the upper guide groove
Front position is located above upper inclined portion.
The lower skateboard both ends are equipped with the lower circuit fixing device for fixing zero line or phase line, and the encapsulating shell is located at
The lower deflector apron corresponding with lower circuit fixing device position is vertically and fixedly provided with below lower skateboard, the lower circuit fixes dress
The lower straight-bar including being vertically fixed on lower skateboard is put, the lower straight-bar is rotatably connected to lower card line in that one end away from lower skateboard
Portion, the opening from top to bottom towards the inclined lower rake in lower skateboard side, top that the lower card line portion includes bottom are facing forward
Lower half circular arc Access Division, lower card line portion middle part are rotatablely connected with lower straight-bar, and lower rake that one end of deflector apron is downwards
Semicircular arc, that side of lower deflector apron circuit fixing device downwards are provided with lower guide groove, before the lower guide groove
Length is more than the length of lower rake afterwards, and the lower guide groove tilts obliquely from front to back, the lower guide groove front position
Below lower rake.Phase line, zero line easily can be fixed by upper and lower circuit fixing device, prevent its movement, pass through
Upper and lower circuit fixing device is supplied to upper and lower one active force of slide plate, further clamps residual current transformer.
Preferably, extension plate is connected with the right side of the upper slide, lower extension plate is connected with the right side of the lower skateboard, it is described
Upper extension plate is provided with upper circuit fixing device provided with right side, and lower circuit fixing device is provided with the right side of the lower extension plate.Further
Fixed zero line.
Following advantageous effects can be obtained by implementing the present invention：
Monitor residual current in real time completely, early warning can be carried out to residual current value, record intelligent electric meter residual current event,
And active reporting, traditional passive investigation electric leakage mode is updated to active investigation mode.Integrative installation technology, optimize internal cloth
Cable architecture, Electrical Safety hidden danger is reduced, improve electricity consumption reliability.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is residual current transformer, amplifier, comparator, the connection figure of single-chip microcomputer in the present invention；
Fig. 3 is encapsulating shell of the present invention and relay, the attachment structure schematic diagram of residual current transformer；
Fig. 4 is the structural representation of fixed part when fixed part does not place residual current transformer in the present invention；
Fig. 5 is the structural representation of fixed part when fixed part places residual current transformer in the present invention；
Embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further with reference to specific embodiment
It is bright：
As shown in Fig. 1~Fig. 2, based on the single-phase intelligent electric energy meter of real-time collection residual current technology, including housing 1, connect
Line end stroma 2, phase line 3, zero line 4；Terminal block 2 includes the first binding post 21, the second binding post 22, the 3rd terminals
The binding post 24 of son 23 and the 4th；Terminal block 2 is fixedly mounted on housing 1；Phase line 3 and zero line 4 are arranged in housing 1；
One end of zero line 4 electrically connects with the 3rd binding post 23；The other end of zero line 4 electrically connects with the 4th binding post 24；Electric energy meter
Also include being used for the relay 5, phase line current sampling resistor 6, residual current transformer 7 for controlling phase line break-make；Relay 5 includes
Contact, the contact of relay are arranged in phase line to control the break-make of phase line.
Relay 5, phase line current sampling resistor 6 and residual current transformer 7 are arranged in housing 1；Phase line current is adopted
Sample resistance 6 is arranged in phase line 3；One end (end of incoming cables) of phase line is connected with the first binding post 21, the other end (outlet of phase line
End) it is connected with the second binding post 22, zero line 4 and phase line 3 are mutually close, and residual current transformer 7 is positioned over phase line 3 and zero line 4
Mutually close to place, and phase line 3 and zero line 4 pass through residual current transformer 7；
Also include：
Amplifier, the input of amplifier is connected with the output end 11 of residual current transformer 7, by residual current transformer
7 output signal amplification；
Comparator, the input of comparator are connected with the output end of amplifier, by the output signal of residual current transformer 7
It is used as input compared with threshold value set in advance after 11 amplifications and exports comparative result signal；
Single-chip microcomputer, single-chip microcomputer include middle fracture, and the middle fracture of single-chip microcomputer is connected with the output end of comparator, single-chip microcomputer it is defeated
Go out the control line 9 of end connection relay, the single-chip microcomputer comparative result signal output relay control signal that fracture receives in.
Relay controls the break-make of phase line 3 according to relay control signal.
The electrical equipment of Electricity customers is when switching access, if that can cause taiwan area transformer leakage protector during electric leakage
Action, after earth leakage protective device tripping, after a while can automatic closing again, the electrical equipment leaked electricity in this process can
Power network can would not be accessed, automatic closing success, such unit-area management personnel can not position which electricity consumer leaks electricity again
It problem, also just can not at all fix a breakdown, when the equipment access system again of electric leakage, also occur that earth leakage protective device moves again
Make, so repeatedly, to contradiction is caused between power supply enterprise and electricity consumer, cause certain economic loss and potential safety hazard.Using
After this programme, amplifier amplifies dump energy transformer output signal, the reference threshold ratio of signal and comparator after amplification
It is right, in real time by residual current value compared with threshold value set in advance, if residual current value is not above threshold value, compare
Device exports non-disruptive signal, the continuous open relay of single-chip microcomputer；Once residual current value exceedes threshold value, comparator output interrupt signal
Singlechip interruption interface is given, after single-chip microcomputer receives interrupt signal, real-time response processing, and control relay disconnects phase line；
It can be tripped according to inner setting by control relay or not trip operation, while record the hair that current leakage current transfinites
Raw time, residual current value and some relevant parameters this moment, the data of record by communication port copy reading or can will show the time
Show on the display apparatus or active reporting, can also carry out corresponding early warning operation, prompt have electric leakage.When need adjust comparator
Threshold value when, corresponding threshold value is issued by the communication port of intelligent electric meter, single-chip microcomputer adjusts PWM or timing according to the threshold value issued
The pulsewidth of device, so as to change reference voltage threshold.This programme can guarantee that the real-time of maximum, not by computation chip passage, lead to
Special designs passage is crossed, when threshold values is exceeded, actively exporting corresponding interrupt signal can locate in real time to single-chip microcomputer, single-chip microcomputer
Reason, in the absence of the situation of leakage.
In order to realize the integrative packaging of relay and residual current transformer, optimize internal wiring structure, reduce electricity consumption
Potential safety hazard, electricity consumption reliability is improved, as shown in figure 1, being provided with encapsulating shell 8 in housing, relay is set with residual current transformer
Put in encapsulating shell 8, the lower end of encapsulating shell 8 is fixedly connected with sheet metal 81, and encapsulating shell is consolidated by sheet metal 81 with terminal block
It is fixed.It is connected by sheet metal 81 with terminal block, easy for installation, sheet metal 81 can be used as connector by phase line and binding post
Seat electrical connection electrically connects zero line with terminal block.
As shown in Fig. 1, Fig. 3~Fig. 5, in order to more convenient, stable fixation residual current transformer 7, zero line 4 and phase line
3, surface middle part is provided with the fixed part for being used for fixing zero line 4, phase line 3 and residual current transformer 7, fixed part bag before encapsulating shell 8
The upper slide 901 being slidably arranged on encapsulating shell 8 up and down and the lower skateboard 902 being slidably arranged on up and down on encapsulating shell 8 are included,
Lower skateboard 902 is located at the lower end of upper slide 901, and the upper end of upper slide 901 is provided with the upper mounted plate 903 being horizontally installed on encapsulating shell 8,
Be provided with upper spring 904 between upper mounted plate 903 and upper slide 901, the upper upper end of spring 904 is fixedly connected with upper mounted plate 903, under
End is fixedly connected with upper slide 901, and the lower end of lower skateboard 902 is provided with the bottom plate 905 being horizontally installed on encapsulating shell 8, is glided
Lower spring 906 is provided between plate 902 and bottom plate 905, the lower end of lower spring 906 is fixedly connected with bottom plate 905, upper end with
Lower skateboard 902 connects.
The both ends of upper slide 901 are equipped with the upper circuit fixing device 91 for fixing zero line 4 or phase line 3, and encapsulating shell 8 is located at
The upper deflector apron 92 corresponding with the upper position of circuit fixing device 91 is vertically and fixedly provided with the top of upper slide 901, upper circuit is consolidated
Determine the upper straight rod 911 that device 91 includes being vertically fixed on upper slide 901, upper straight rod 911 rotates away from that one end of upper slide 901
Be connected with thread jamming part 912, upper thread jamming part 912 include top from top to bottom towards the inclined upper inclination in the side of upper slide 901
Portion 9121, the opening of bottom upper half circular arc Access Division 9122 facing forward, upper thread jamming part middle part are rotatablely connected with upper straight rod 911,
That one end of deflector apron 92 is semicircular arc to upper inclined portion 9121 upwardly, upper deflector apron 92 circuit fixing device 91 upwardly
That side be provided with upper guide groove 921, the upper anterior-posterior length of guide groove 921 is more than the length of upper inclined portion 9121, upper guide groove 921
Tilt obliquely from front to back, the upper front position of guide groove 921 is located at the top of upper inclined portion 9121.
The both ends of lower skateboard 902 are equipped with the lower circuit fixing device 93 for fixing zero line 4 or phase line 3, and encapsulating shell 8 is located at
The lower deflector apron 94 corresponding with the lower position of circuit fixing device 93 is vertically and fixedly provided with the lower section of lower skateboard 902, lower circuit is consolidated
Determine the lower straight-bar 931 that device 93 includes being vertically fixed on lower skateboard 902, lower straight-bar 931 rotates away from that one end of lower skateboard 902
Be connected with lower card line portion 932, lower card line portion 932 include bottom from top to bottom towards the inclined lower inclination in the side of lower skateboard 902
Portion 9321, the opening on top lower half circular arc Access Division 9322 facing forward, lower card line portion middle part are rotatablely connected with lower straight-bar 931,
That one end of deflector apron 94 is semicircular arc to lower rake 9321 downwards, lower deflector apron 94 circuit fixing device 93 downwards
That side be provided with lower guide groove 941, the lower anterior-posterior length of guide groove 941 is more than the length of lower rake 9321, lower guide groove 941
Tilt obliquely from front to back, the lower front position of guide groove 941 is positioned at the lower lower section of rake 9321.
As shown in figure 4, under original state, the distance between upper slide 901 and lower skateboard 902 are less than residual current transformer
7 thickness, zero line 4 and phase line 3 are first placed on corresponding upper half circular arc Access Division 9122 and lower half circular arc Access Division
On 9322, by the upward sliding of upper slide 901, by the slide downward of lower skateboard 902, residual current transformer 7 is then inserted into upper cunning
Between plate 901 and lower skateboard 902, upper spring 904 has downward elastic force, lower spring 906 to have lower skateboard 902 to upper slide 901
Upward elastic force, so as to clamp residual current transformer, in order to preferably fix residual current transformer, the lower end of upper slide 901
Rubber blanket is equipped with the upper end of lower skateboard 902, the upper surface both ends of upper slide 901 are provided with downward extension, the following table of lower skateboard 902
Face both ends are provided with upward extension, are clamped residual current transformer both ends by extension, now, as shown in figure 5, updip
In the presence of inclined portion 9121 is because of upper guide groove 921, upper inclined portion 9121 rotates to encapsulating shell direction, and then drives upper half circular arc
Access Division 9122 rotates, and upper half circular arc Access Division 9122 passes through upper deflector apron 92 and upper semi-circle close to upper deflector apron 92
Arc Access Division 9122, which coordinates, clamps zero line 4 or phase line 3, clamps zero line 4 or during phase line 3, and upper straight rod 911 can not be to moving up
It is dynamic, and by the downward active force of upper thread jamming part 912, and then upper straight rod 911 applies downward active force to upper slide 901；Together
Lower skateboard 902 is managed by lower straight-bar 931 active force upward to its, and then improves upper slide 901 and lower skateboard 902 to remaining electricity
The clamping effect of current transformer, while zero line or phase line are also fixed by lower card line portion 932, if moreover, not taking out residual current
Transformer, lower card line portion 932 and upper thread jamming part 912 can not rotate, and zero line and live wire are by upper circuit fixing device 91 and offline
Road fixing device 93 is fixed, and in the case where taking out residual current transformer, 901 power under spring action of upper slide is downward
Slide, the power upward sliding under spring action of lower skateboard 902, now lower card line portion 932 and upper thread jamming part 912 are rotatable,
Directly zero line and phase line can be pulled out, operation is very easy, zero line and phase line fixing-stable, improves the inspection of residual current transformer
Survey effect.
In order to preferably fix zero line, extension plate is connected with the right side of upper slide, lower extension plate is connected with the right side of lower skateboard,
Upper extension plate is provided with upper circuit fixing device provided with right side, and lower circuit fixing device is provided with the right side of lower extension plate.
The residual current in single-phase electrical system can be detected in real time, increase intelligent electric meter residual current logout and master
Dynamic reporting functions, trip protection can only be carried out when residual current transfinites by solving residual current operated protective device, can not be carried out
Early warning and the problem of monitor in real time, and traditional passive investigation electric leakage mode is updated to active investigation mode.
The specific embodiment of the present invention is the foregoing is only, but the technical characteristic of the present invention is not limited thereto, Ren Heben
The technical staff in field in the field of the invention, all cover among the scope of the claims of the present invention by the change or modification made.
Claims (3)
1. based on the single-phase intelligent electric energy meter of real-time collection residual current technology, including housing, terminal block, phase line, zero line,
For controlling the relay of phase line break-make, the residual current transformer for measuring residual current, terminal block is fixedly mounted
On housing；Relay, residual current transformer, phase line and zero line are arranged in housing, it is characterised in that are also included：
Amplifier, the input of the amplifier and the output end of residual current transformer connect, by residual current transformer
Output signal is amplified；
Comparator, the input of the comparator are connected with the output end of amplifier, by the output signal of residual current transformer
It is used as input compared with reference threshold set in advance after amplification and exports comparative result signal；
Single-chip microcomputer, the single-chip microcomputer include middle fracture, and the middle fracture of single-chip microcomputer is connected with the output end of comparator, single-chip microcomputer it is defeated
Go out the control line of end connection relay, the single-chip microcomputer comparative result signal output relay control signal that fracture receives in；
Relay and residual current transformer integrative packaging, the housing is interior to be provided with encapsulating shell, the relay and residue electricity
Current transformer is arranged in encapsulating shell, and the encapsulating shell lower end is fixedly connected with sheet metal, the encapsulating shell by sheet metal with
Terminal block is fixed, and the fixed part for being used for fixing zero line, phase line and residual current transformer is provided with the encapsulating shell, described
Fixed part includes slidably setting upper slide on the package up and down and slidably sets lower skateboard on the package up and down,
The lower skateboard is located at upper slide lower end, and the upper slide upper end is provided with the upper mounted plate being horizontally installed on encapsulating shell, described
Upper spring is provided between upper mounted plate and upper slide, the upper spring upper end is fixedly connected with upper mounted plate, lower end and upper slide
It is fixedly connected, the lower skateboard lower end is provided with the bottom plate being horizontally installed on encapsulating shell, the lower skateboard and bottom plate
Between be provided with lower spring, the lower spring lower end is fixedly connected with bottom plate, upper end and lower skateboard are connected, the upper slide two
End is equipped with the upper circuit fixing device for fixing zero line or phase line, and the encapsulating shell is located at vertical fixed at upper slide top
There is the upper deflector apron corresponding with upper circuit fixing device position, the upper circuit fixing device includes being vertically fixed on cunning
Upper straight rod on plate, the upper straight rod are rotatably connected to upper thread jamming part away from that one end of upper slide, and the upper thread jamming part includes upper
Portion from top to bottom towards the inclined upper inclined portion in upper slide side, the opening upper half circular arc Access Division facing forward of bottom, on
It is rotatablely connected with upper straight rod in the middle part of thread jamming part, that one end of deflector apron is semicircular arc to upper inclined portion upwardly, the upper guiding
That side of plate washer circuit fixing device upwardly is provided with upper guide groove, and the upper guide groove anterior-posterior length is more than upper inclined portion
Length, the upper guide groove tilt obliquely from front to back, and the upper guide groove front position is located above upper inclined portion；
The lower skateboard both ends are equipped with the lower circuit fixing device for fixing zero line or phase line, and the encapsulating shell is positioned at downslide
The lower deflector apron corresponding with lower circuit fixing device position, the lower circuit fixing device bag are vertically and fixedly provided with below plate
The lower straight-bar being vertically fixed on lower skateboard is included, the lower straight-bar is rotatably connected to lower card line portion, institute away from that one end of lower skateboard
State lower card line portion include bottom from top to bottom towards the inclined lower rake in lower skateboard side, the opening lower half circle facing forward on top
Arc Access Division, lower card line portion middle part are rotatablely connected with lower straight-bar, and that one end of deflector apron is semi arch to lower rake downwards
Shape, that side of lower deflector apron circuit fixing device downwards are provided with lower guide groove, the lower guide groove anterior-posterior length
More than the length of lower rake, the lower guide groove tilts obliquely from front to back, under the lower guide groove front position is located at
Below rake.
2. the single-phase intelligent electric energy meter as claimed in claim 1 based on real-time collection residual current technology, it is characterised in that：Institute
Stating relay includes contact, and the contact of the relay is arranged in phase line to control the break-make of phase line.
3. the single-phase intelligent electric energy meter as claimed in claim 1 based on real-time collection residual current technology, it is characterised in that：Institute
The terminal block stated includes the first binding post, the second binding post, the 3rd binding post and the 4th binding post；Zero line
One end electrically connects with the 3rd binding post；The other end of zero line electrically connects with the 4th binding post；One end of phase line connects with first
Line terminals are connected, and the other end of phase line is connected with the second binding post, and the residual current transformer is arranged at phase line and zero line
Mutually close to place, and phase line and zero line pass through residual current transformer.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510845537.2A CN105403742B (en) | 2015-11-27 | 2015-11-27 | Single-phase intelligent electric energy meter based on real-time collection residual current technology |
| CN201711350597.2A CN108051624B (en) | 2015-11-27 | 2015-11-27 | Single-phase intelligent electric energy meter with adjustable residual current threshold |
| CN201711350529.6A CN108037334B (en) | 2015-11-27 | 2015-11-27 | Single-phase intelligent electric energy meter structure for collecting residual current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510845537.2A CN105403742B (en) | 2015-11-27 | 2015-11-27 | Single-phase intelligent electric energy meter based on real-time collection residual current technology |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711350529.6A Division CN108037334B (en) | 2015-11-27 | 2015-11-27 | Single-phase intelligent electric energy meter structure for collecting residual current |
| CN201711350597.2A Division CN108051624B (en) | 2015-11-27 | 2015-11-27 | Single-phase intelligent electric energy meter with adjustable residual current threshold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105403742A CN105403742A (en) | 2016-03-16 |
| CN105403742B true CN105403742B (en) | 2018-03-16 |
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ID=55469350
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711350529.6A Active CN108037334B (en) | 2015-11-27 | 2015-11-27 | Single-phase intelligent electric energy meter structure for collecting residual current |
| CN201510845537.2A Active CN105403742B (en) | 2015-11-27 | 2015-11-27 | Single-phase intelligent electric energy meter based on real-time collection residual current technology |
| CN201711350597.2A Active CN108051624B (en) | 2015-11-27 | 2015-11-27 | Single-phase intelligent electric energy meter with adjustable residual current threshold |
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| CN105866485A (en) * | 2016-04-28 | 2016-08-17 | 浙江豪顿电气有限公司 | Integrated intelligent electricity meter with earth leakage protection function |
| CN106443437A (en) * | 2016-11-16 | 2017-02-22 | 浙江方圆电气设备检测有限公司 | A residual current adjusting device |
| CN112986637A (en) * | 2019-12-16 | 2021-06-18 | 浙江天康电子科技有限公司 | Electric power instrument with built-in protective structure |
| CN112415242B (en) * | 2020-09-15 | 2022-11-04 | 国网浙江省电力有限公司湖州供电公司 | Intelligent electric energy metering box inlet wire quick connecting device |
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Also Published As
| Publication number | Publication date |
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| CN108037334A (en) | 2018-05-15 |
| CN108051624B (en) | 2020-09-18 |
| CN108037334B (en) | 2020-10-27 |
| CN108051624A (en) | 2018-05-18 |
| CN105403742A (en) | 2016-03-16 |
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