CN207082799U - A kind of combined connection box for possessing lightning protection function - Google Patents
A kind of combined connection box for possessing lightning protection function Download PDFInfo
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- CN207082799U CN207082799U CN201721012252.1U CN201721012252U CN207082799U CN 207082799 U CN207082799 U CN 207082799U CN 201721012252 U CN201721012252 U CN 201721012252U CN 207082799 U CN207082799 U CN 207082799U
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Abstract
The utility model discloses it is a kind of be used for connect distribution transforming electric load management through quantification terminal, distribution transforming measure monitor terminal, three-phase intelligent ammeter the combined connection box for possessing lightning protection function, be related to overvoltage surge protection technology field.Power lightning protection circuit, RS485 signal lighting protection circuits and GPRS signal lighting protection circuits are provided with inside the combined connection box, integrate AC220V power supplys, RS485 signals, GPRS signal carrying out surge protection functions, when circuit overvoltage or when having moment thunder and lightning, lightning current is led to underground by lightning protection circuit, ensure the continuous service of connection equipment, do not influenceed by lightning current, the carrying out surge protection of circuit is realized, so as to avoid distribution transforming electric load management through quantification terminal, distribution transforming measure monitor terminal, three-phase intelligent ammeter by broken by lightning., can compatible phase three-wire three, the power supply Connection Mode of two kinds of standards of three-phase and four-line meanwhile above-mentioned combined connection box uses three-phase and four-line structure design.
Description
Technical field
Overvoltage surge protection technology field is the utility model is related to, it is more particularly to a kind of to be used to connect distribution transforming electric load
Management through quantification terminal, distribution transforming measure monitor terminal, the combined connection box for possessing lightning protection function of three-phase intelligent ammeter.
Background technology
National grid, distribution department of power supply administration of south electric network prefectures and cities were provided with intelligent electric meter (outdoor, 10kV in the last few years
Transformer output end), each districts and cities' enormous amount, intelligent electric meter is installed outdoors, frequently suffers from broken by lightning, causes electric energy number
According to that can not read, maintenance workload is also very big.In the market also without for distribution transforming electric load management through quantification terminal, distribution transforming
The special Surge Protector of measure monitor terminal, three-phase intelligent ammeter, even if being mounted with other non-dedicated Surge Protectors
Do not play a very good protection.Power matching network department there is an urgent need to can solve the problem that distribution transforming electric load management through quantification terminal,
Distribution transforming measure monitor terminal, three-phase intelligent ammeter are by the technical scheme of broken by lightning.
The content of the invention
Technical problem to be solved in the utility model is that distribution transforming electric load management through quantification can be avoided by providing one kind
Terminal, distribution transforming measure monitor terminal, three-phase intelligent ammeter are by the combined connection box for possessing lightning protection function of broken by lightning.
In order to solve the above technical problems, the utility model uses technical scheme as described below：
A kind of combined connection box for possessing lightning protection function, by connecting distribution transforming electric load management through quantification terminal, based on distribution transforming
Monitoring terminal, three-phase intelligent ammeter, including shell are measured, A phase voltage inlet wires connection terminal is installed in the shell, A phase voltages go out
Line connection terminal, B phase voltage inlet wires connection terminal, B phase voltage outlets connection terminal, C phase voltage inlet wires connection terminal, C phases electricity
Extrusion line connection terminal, N phase voltage inlet wires connection terminal, N phase voltage outlet connection terminals.An electricity is additionally provided with the shell
Source lightning protection circuit, the power lightning protection circuit include A phase voltages connecting line, B phase voltages connecting line, C phase voltages connecting line, N phases
Voltage connecting wire and four power lightning protection units.The first end of the A phase voltages connecting line connects the A phase voltages inlet wire and connected
Connecting terminal, the second end of the A phase voltages connecting line connect the A phase voltages outlet connection terminal；The B phase voltages connecting line
First end connect the B phase voltages inlet wire connection terminal, the second end of the B phase voltages connecting line connects the B phase voltages
Outlet connection terminal；The first end of the C phase voltages connecting line connects the C phase voltages inlet wire connection terminal, the C phase voltages
Second end of connecting line connects the C phase voltages outlet connection terminal；The first end of the N phase voltages connecting line connects the N
Phase voltage inlet wire connection terminal, the second end of the N phase voltages connecting line connect the N phase voltages outlet connection terminal.It is described
The input of four power lightning protection units connects A phase voltages connecting line, B phase voltages connecting line, C phase voltages connecting line, N phases respectively
Voltage connecting wire, the output end of four power lightning protection units are grounded.
Preferably, the A phase voltages outlet connection terminal, B phase voltage outlets connection terminal, C phase voltage outlets connection end
Son, the number of N phase voltage outlet connection terminals are three.
Preferably, the power lightning protection unit includes two piezo-resistances in parallel and one or two pole discharge tubes, described two
The input of piezo-resistance one end in parallel as power lightning protection unit, the other end are connected with one end of two pole discharge tube,
Power output end of the other end of two pole discharge tube as power lightning protection unit.
Preferably, the power lightning protection circuit also includes four inductance, and one end of four inductance connects A phases electricity respectively
Press connecting line, B phase voltages connecting line, C phase voltages connecting line, the second end of N phase voltage connecting lines, four inductance it is another
End is respectively connecting to A phase voltage outlets connection terminal, B phase voltage outlets connection terminal, C phase voltage outlets connection terminal, N phases electricity
Extrusion line connection terminal.
Preferably, RS485 inlet wires connection terminal, RS485 outlet connection terminals, the RS485 are installed in the shell
A RS485 signal lighting protection circuits are connected between inlet wire connection terminal, RS485 outlet connection terminals, RS485 signal lighting protections electricity
Road includes four data connecting lines and two signal lighting protection units.Described in the first end of the four datas connecting line is used as
The signal input part of RS485 signal lighting protection circuits is connected with the RS485 inlet wires connection terminal, the four datas connecting line
Second end is connected as the signal output part of the RS485 signal lighting protection circuits with the RS485 outlets connection terminal.Described four
Data connecting line include two send data wires and two reception data wires, the first of one of signal lighting protection unit
Terminals and the second terminals are respectively connecting to the first end of two transmissions data wire；The of another signal lighting protection unit
One terminals and the second terminals are respectively connecting to the first end of two receptions data wire；Described two signal lighting protection units
The 3rd terminals be grounded.
Preferably, the signal lighting protection unit includes an electrode surge arrester；Two inputs of the electrode surge arrester point
The first terminals and the second terminals not as the signal lighting protection unit, described in the output end of the electrode surge arrester is used as
3rd terminals of signal lighting protection unit.
Preferably, the RS485 signal lighting protection circuits also include four resistance, eight diodes and a two-way transient state
Suppress diode.One end of four resistance connects the second end of the four datas connecting line, four resistance respectively
Signal output part of the other end as the RS485 signal lighting protection circuits；The signal output of the RS485 signal lighting protection circuits
End connects the anode of wherein four diodes respectively, and the negative electrode of four diodes is all connected with the two-way Transient Suppression Diode
One end；The signal output part of the RS485 signal lighting protection circuits connects the negative electrode of four additional diode respectively, and this other four
The anode of individual diode is all connected with the other end of the two-way Transient Suppression Diode.
Preferably, SMA inlet wires connection terminal, SMA outlet connection terminals are installed, the SMA inlet wires connect in the shell
A GPRS signal lighting protection circuits are connected between connecting terminal, SMA outlet connection terminals, the GPRS signal lighting protection circuits include two
Bar GPRS signal datas connecting line and a GPRS signal lighting protection units.The first end of two GPRS signal data connecting lines
GPRS signal input parts as the GPRS signal lighting protection circuits are connected with the SMA inlet wires connection terminal, described two
Second end of GPRS signal data connecting lines goes out as the GPRS signal output parts of the GPRS signal lighting protection circuits with the SMA
Line connection terminal connects.First connection end of the GPRS signal lighting protections unit is connected to a wherein GPRS signal datas connection
Line, the second connection end of the GPRS signal lighting protections unit are connected to another GPRS signal datas connecting line and are grounded.
Preferably, the GPRS signal lighting protections unit includes one or two pole discharge tubes, and the input of two pole discharge tube is made
For the first connection end of the GPRS signal lighting protections unit；The output end of two pole discharge tube is as the GPRS signal lighting protections
The second connection end of unit.
Preferably, it is provided with the side wall of the shell and goes out respectively with the A phase voltages inlet wire connection terminal, A phase voltages
Line connection terminal, B phase voltage inlet wires connection terminal, B phase voltage outlets connection terminal, C phase voltage inlet wires connection terminal, C phases electricity
The corresponding wiring hole of extrusion line connection terminal, N phase voltage inlet wires connection terminal, N phase voltage outlet connection terminals.
Advantageous effects of the present utility model are：The above-mentioned combined connection box for possessing lightning protection function, sets inside it
Power lightning protection circuit is put, when circuit overvoltage or when having moment thunder and lightning, lightning current is led to underground by power lightning protection circuit, is ensured
The continuous service of equipment is connected, is not influenceed by lightning current, realizes the carrying out surge protection of circuit, so as to avoid distribution transforming power load
Lotus management through quantification terminal, distribution transforming measure monitor terminal, three-phase intelligent ammeter are by broken by lightning.Meanwhile above-mentioned combined connection box is adopted
, can compatible phase three-wire three, the power supply Connection Mode of two kinds of standards of three-phase and four-line with three-phase and four-line structure design.
Brief description of the drawings
Fig. 1 is the explosive view of the combined connection box of the present utility model for possessing lightning protection function；
Fig. 2 is the internal structure schematic diagram of the combined connection box of the present utility model for possessing lightning protection function；
Fig. 3 is a side structure schematic diagram of the combined connection box of the present utility model for possessing lightning protection function；
Fig. 4 is another side structure schematic diagram of the combined connection box of the present utility model for possessing lightning protection function；
Fig. 5 is the profile of the combined connection box of the present utility model for possessing lightning protection function；
Fig. 6 is the circuit theory diagrams of the power lightning protection circuit of the combined connection box of the present utility model for possessing lightning protection function；
Fig. 7 is that the circuit of the RS485 signal lighting protection circuits of the combined connection box of the present utility model for possessing lightning protection function is former
Reason figure；
Fig. 8 is the circuit theory of the GPRS signal lighting protection circuits of the combined connection box of the present utility model for possessing lightning protection function
Figure.
Embodiment
To make one of ordinary skill in the art that the purpose of this utility model, technical scheme and excellent be more clearly understood
Point, the utility model is further elaborated below in conjunction with drawings and examples.
As shown in Figure 1-2, in one embodiment of the present utility model, dedicated for connecting distribution transforming electric load gauge line
Reason terminal, distribution transforming measure monitor terminal, the combined connection box for possessing lightning protection function of three-phase intelligent ammeter include shell, and this is outer
Shell is made up of housing 100, upper lid 200 and lower cover 300.One PE ground wire output connection terminal is installed in the housing 100
110th, the interconnected A phase voltage outlets connection terminal 122, three of an A phase voltage inlet wires connection terminal 121, three is mutual
The A phase current outlets connection terminal 124, one of 123, three mutually isolated insulation of A phase current inlet wires connection terminal of isolated insulation
The interconnected B phase voltage outlets connection terminal 132, three of individual B phase voltages inlet wire connection terminal 131, three is mutually isolated absolutely
134, C phases electricity of B phase current outlets connection terminal of 133, three mutually isolated insulation of B phase current inlet wires connection terminal of edge
It is pressed into the C phases of interconnected C phase voltage outlets 142, the three mutually isolated insulation of connection terminal of line connection terminal 141, three
144, N phase voltage inlet wires of C phase current outlets connection terminal of 143, three mutually isolated insulation of electric current inlet wire connection terminal
The interconnected N phase voltage outlets connection terminal 152 of connection terminal 151, three, RS485 inlet wires connection terminal 161, RS485 go out
Line connection terminal 162, SMA inlet wires connection terminal 163, SMA outlets connection terminal 164.
As shown in figure 3, it is provided with the inlet wire side wall 101 of the housing 100 of the combined connection box for possessing lightning protection function
Output connection terminal 110, A phase voltage inlet wires connection terminal 121, A phase current inlet wire connection terminals are grounded with the PE respectively
123rd, B phase voltages inlet wire connection terminal 131, B phase current inlet wires connection terminal 133, C phase voltage inlet wires connection terminal 141, C phases
Electric current inlet wire connection terminal 143, N phase voltage inlet wires connection terminal 151, RS485 inlet wires connection terminal 161, SMA inlet wires connection end
Son 163 corresponding PE ground wire output connections hole 210, A phase voltage inlet wires wiring hole 221, A phase current inlet wire wiring holes one by one
223rd, B phase voltages inlet wire wiring hole 231, B phase current inlet wires wiring hole 233, C phase voltage inlet wires wiring hole 241, C phase currents enter
Line wiring hole 243, N phase voltage inlet wires wiring hole 251, RS485 inlet wires wiring hole 261, SMA inlet wires wiring hole 263.
As shown in figure 4, it is provided with the outlet side wall 102 of the housing 100 of the combined connection box for possessing lightning protection function
Respectively with A phase voltage outlets connection terminal 122, A phase current outlets connection terminal 124, B phase voltage outlets connection terminal 132, B
Phase current outlet connection terminal 134, C phase voltage outlets connection terminal 142, C phase current outlets connection terminal 144, N phase voltages go out
The corresponding A phase voltage outlets one by one of line connection terminal 152, RS485 outlets connection terminal 162, SMA outlets connection terminal 164
Wiring hole 222, A phase current outlets wiring hole 224, B phase voltage outlets wiring hole 232, B phase current outlets wiring hole 234, C phases
Voltage outlet wiring hole 244, C phase current outlets wiring hole 244, N phase voltage outlets wiring hole 252, RS485 outlet wiring holes
262nd, SMA outlets wiring hole 264.The A phase voltages outlet wiring hole 222, A phase current outlets wiring hole 224, B phase voltages go out
Line wiring hole 232, B phase current outlets wiring hole 234, C phase voltage outlets wiring hole 244, C phase current outlets wiring hole 244, N
Phase voltage outlet wiring hole 252, RS485 outlets wiring hole 262, SMA outlets wiring hole 264 and existing conventional distribution transforming power load
Lotus management through quantification terminal, distribution transforming measure monitor terminal, the connection terminal row of three-phase intelligent ammeter are compatible so that of the present utility model
Possess the combined connection box and distribution transforming electric load management through quantification terminal, distribution transforming measure monitor terminal, three-phase intelligent of lightning protection function
Compatible it can be installed between ammeter.
A power lightning protection circuit, a RS485 signal lighting protection circuits and a GPRS signals are additionally provided with the housing 100
Lightning protection circuit.As shown in figure 5, the power circuit wiring board 103 for carrying the power lightning protection circuit is installed in the housing 100
And the carrying RS485 signal lighting protection circuits, the signal circuit wiring board 104 of GPRS signal lighting protection circuits.It is described electric including A phases
It is pressed into line connection terminal 121, A phase voltage outlets connection terminal 122, A phase current inlet wires connection terminal 123, A phase currents outlet company
Connecting terminal 124, B phase voltage inlet wires connection terminal 131, B phase voltage outlets connection terminal 132, B phase current inlet wire connection terminals
133rd, B phase currents outlet connection terminal 134, C phase voltage inlet wires connection terminal 141, C phase voltage outlets connection terminal 142, C phases
Electric current inlet wire connection terminal 143, C phase current outlets connection terminal 144, N phase voltage inlet wires connection terminal 151, N phase voltage outlets
The power circuit connector of connection terminal 152 is installed on the side of the power circuit wiring board 103, the power circuit circuit
The lower cover 300 of power circuit connector and shell is isolated from the both sides of power circuit wiring board 103 by plate 103, is avoided under dismounting
Lid 300 is mounted directly the situation generation that stealing module carries out stealing.After the use of the power circuit wiring board 103 nut fixation again
With epoxy resin sealed screw, increase dismounting difficulty, the effect for preferably preventing stealing is served.It is described including RS485 inlet wires
Connection terminal 161, RS485 outlets connection terminal 162, SMA inlet wires connection terminal 163, the signal of SMA outlets connection terminal 164
Circuit connecting unit is installed on the side of the signal circuit wiring board 104, and the signal circuit wiring board 104 connects signal circuit
The lower cover 300 of fitting and shell is isolated from the both sides of signal circuit wiring board 104.
Connect as shown in fig. 6, the power lightning protection circuit includes A phase voltages connecting line, B phase voltages connecting line, C phase voltages
Wiring, N phase voltages connecting line and four power lightning protection units, four power lightning protection units are respectively the first power lightning protection list
Member 10, second source lightning protection unit 11, the 3rd power lightning protection unit 12, the 4th power lightning protection unit 13.The A phase voltages connection
The first end of line connects the A phase voltages inlet wire connection terminal 121, and the second end of the A phase voltages connecting line connects the A phases
Voltage outlet connection terminal 122；The first end of the B phase voltages connecting line connects the B phase voltages inlet wire connection terminal 131,
Second end of the B phase voltages connecting line connects the B phase voltages outlet connection terminal 132；The of the C phase voltages connecting line
One end connects the C phase voltages inlet wire connection terminal 141, and the second end of the C phase voltages connecting line connects the C phase voltages and gone out
Line connection terminal 142；The first end of the N phase voltages connecting line connects the N phase voltages inlet wire connection terminal 151, the N phases
Second end of voltage connecting wire connects the N phase voltages outlet connection terminal 152.The first power lightning protection unit 10, second
Power lightning protection unit 11, the 3rd power lightning protection unit 12, the input of the 4th power lightning protection unit 13 are respectively connecting to A phase voltages
Connecting line, B phase voltages connecting line, C phase voltages connecting line, N phase voltage connecting lines, the first power lightning protection unit 10, second
Power lightning protection unit 11, the 3rd power lightning protection unit 12, the output end of the 4th power lightning protection unit 13 are grounded.
Further, the first power lightning protection unit 10 includes two piezo-resistance R1, R2 in parallel and one or two poles are put
Fulgurite GDT1, one end after described two piezo-resistance R1, R2 parallel connections connect as the input of the first power lightning protection unit 10
To A phase voltage connecting lines, the other end is connected with one end of the two pole discharge tube GDT1, and the two pole discharge tube GDT1's is another
Hold the output end as the first power lightning protection unit 10 and ground connection.When A phase voltage connecting line overvoltage or when having moment thunder and lightning, two
Individual piezo-resistance R1, R2 and two pole discharge tube GDT1 will be breakdown, and lightning current is led into underground, ensures the lasting fortune of connection equipment
OK, do not influenceed by lightning current, voltage surge protection is realized, so as to avoid distribution transforming electric load management through quantification terminal, match somebody with somebody
Become measure monitor terminal, three-phase intelligent ammeter by broken by lightning.The second source lightning protection unit 11, the 3rd power lightning protection unit
12nd, the input of the 4th power lightning protection unit 13 is respectively connecting to B phase voltages connecting line, C phase voltages connecting line, N phase voltages company
Wiring, the second source lightning protection unit 11, the 3rd power lightning protection unit 12, the output end of the 4th power lightning protection unit 13 connect
Ground.Wherein, the second source lightning protection unit 11, the 3rd power lightning protection unit 12, the 4th power lightning protection unit 13 composition and
Implementation is identical with the first power lightning protection unit 10, repeats no more here.In other embodiment of the present utility model
In, four power lightning protection units can also have a variety of implementations, and the utility model is not especially limited.
In some preferred embodiments of the present utility model, the power lightning protection circuit also includes inductance L1, inductance L2, electricity
Feel L3, inductance L4, the A phase voltages connecting line, B phase voltages connecting line, C phase voltages connecting line, the second of N phase voltage connecting lines
End connects inductance L1, inductance L2, inductance L3, inductance L4 one end respectively, inductance L1, inductance L2, inductance L3, inductance L4 it is another
End is respectively connecting to A phase voltage outlets connection terminal 122, B phase voltage outlets connection terminal 132, C phase voltage outlet connection terminals
142nd, N phase voltages outlet connection terminal 152.When power lightning protection circuit overvoltage or when having moment thunder and lightning, piezo-resistance and two poles
Discharge tube will be breakdown, and lightning current is led into underground；When the inductance L1, inductance L2, inductance L3, inductance L4 produce reaction potential
Normal voltage is exported, ensures the continuous service of connection equipment, is not influenceed by lightning current, so as to avoid distribution transforming electric load meter
Management terminal, distribution transforming measure monitor terminal, three-phase intelligent ammeter are measured by broken by lightning.
As shown in fig. 7, the RS485 signal lighting protection circuits are provided with including four data connecting lines and two signal lighting protections
Unit, the signal input part and the RS485 of the first end of the four datas connecting line as the RS485 signal lighting protection circuits
Inlet wire connection terminal connection 161, the signal of the second end of the four datas connecting line as the RS485 signal lighting protection circuits
Output end is connected with the RS485 outlets connection terminal 162.
The four datas connecting line includes first and sends data wire A1, the second transmission data wire B1, and first receives data
Line A2, second receive data wire B2.Described two signal lighting protection units include the first signal lighting protection unit 21, secondary signal lightning protection
Unit 22.The first terminals and the second terminals of the first signal lighting protection unit 21 are respectively connecting to described first and send number
Data wire B1 first end is sent according to line A1, second；First terminals of the secondary signal lightning protection unit 22 and the second wiring
End is respectively connecting to described first and receives data wire A2, the second reception data wire B2 first end；The first signal lighting protection list
Member 21, the 3rd terminals of secondary signal lightning protection unit 22 are grounded.
Further, the first signal lighting protection unit 21 is an electrode surge arrester Q1, the two of the electrode surge arrester Q1
Individual input is respectively connecting to described first as the first terminals of the signal lighting protection unit 21 and the second terminals and sent
Data wire A1, second send the of data wire B1, electrode surge arrester Q1 output end as the signal lighting protection unit 21
Three terminals are grounded.The secondary signal lightning protection unit 22 is an electrode surge arrester Q2, and two of the electrode surge arrester Q2 are defeated
Enter end and be respectively connecting to the first reception data as the first terminals of the signal lighting protection unit 22 and the second terminals
Line A2, the second reception data wire B2, electrode surge arrester Q2 output end connect as the 3rd of the signal lighting protection unit 22
Line end is grounded.When the first transmission data wire A1, second send data wire B1 overvoltage or have moment thunder and lightning, the first hair is connected to
Send data wire A1, the second electrode surge arrester Q1 sent between data wire B1 breakdown, lightning current is led into underground, ensures connection
The continuous service of communication apparatus, is not influenceed by lightning current, realizes the voltage surge protection of signal circuit.Similarly, when first
When receiving overvoltage between data wire A2, the second reception data wire B2 or having moment thunder and lightning, be connected to the first reception data wire A2,
The second electrode surge arrester Q2 received between data wire B2 is breakdown, and lightning current is led into underground, ensures connecting communication equipment
Continuous service, do not influenceed by lightning current, realize the voltage surge protection of signal circuit.In other implementations of the present utility model
In example, the first signal lighting protection unit 21, secondary signal lightning protection unit 22 can also have a variety of implementations, the utility model
It is not especially limited.It should be noted that the electrode surge arrester Q1, electrode surge arrester Q2 can be connected to as isolating device
Between the RS485 signal lighting protection circuits and ground so that the RS485 signal lighting protection circuits floating ground, realize power lightning protection
Circuit is isolated with what RS485 signal lighting protection circuits were grounded, power lightning protection circuit and RS485 signal lighting protections when avoiding the lightning current from releasing
Circuit influences each other.
Further, the RS485 signal lighting protection circuits also include four resistance R9, R10, R11, R12, eight two poles
Pipe D1, D2, D3, D4, D5, D6, D7, D8 and a two-way Transient Suppression Diode T1.Described first sends data wire A1, second
Send data wire B1, the first reception data wire A2, the second reception data wire B2 the second end connect four resistance R9, R10 respectively,
R11, R12 one end, the signal of the other end of four resistance R9, R10, R11, the R12 as the RS485 signal lighting protection circuits
Output end.The signal output part of the RS485 signal lighting protection circuits connects four diodes D1, D2, D3, D4 anode respectively,
The negative electrode of four diodes D1, D2, D3, the D4 are all connected with one end of the two-way Transient Suppression Diode T1.The RS485 letters
The signal output part of number lightning protection circuit connects four additional diode D5, D6, D7, D8 negative electrode, the pole of four additional two respectively
Pipe D5, D6, D7, D8 anode are all connected with the other end of the two-way Transient Suppression Diode T1.The two-way transient state suppresses two
Pole pipe T1 can be with the speed of 10 minus 12 power second-time by the high impedance of two interpolars when running into reverse moment high energy impact events
It is changed into Low ESR, absorbs up to thousands of watts of surge power, make the voltage clamp of two interpolars can root in safety value, the safety value
Set according to being actually needed, such as 5V, 12V.Therefore, the RS485 signal lighting protection circuits two-way transient state suppression when there is thunderbolt to occur
Diode T1 processed can absorb surge rapidly, realize the secondary carrying out surge protection of signal circuit.
As shown in figure 8, the GPRS signal lighting protection circuits are believed including the first GPRS signal data connecting lines A3, the 2nd GPRS
Number connecting line B3 and a GPRS signal lighting protections unit 30.The first GPRS signal data connecting lines A3, the 2nd GPRS believe
Number connecting line B3 first end connects as the GPRS signal input parts of the GPRS signal lighting protection circuits with the SMA inlet wires
Connecting terminal 163 connects；The first GPRS signal data connecting lines A3, the 2nd GPRS signal data connecting lines B3 the second end are made
It is connected for the GPRS signal output parts of the GPRS signal lighting protection circuits with the SMA outlets connection terminal 164.The GPRS letters
Number lightning protection unit 30 is one or two pole discharge tube GDT5, and the input of the two pole discharge tube GDT1 is as the GPRS signal lighting protections
First connection end of unit 30 is connected to wherein the first GPRS signal datas connecting line A3, the output of the two pole discharge tube GDT5
Hold and be connected to the 2nd GPRS signal data connecting line B3 as the second connection end of the GPRS signal lighting protections unit 30 and be grounded.
When there is thunder and lightning generation, high pressure punctures two pole discharge tube GDT5, and lightning current is led into underground, ensures the safety of equipment.
The beneficial effect of the combined connection box for possessing lightning protection function in the utility model embodiment：
1st, above-mentioned combined connection box, power lightning protection circuit is provided with inside combined connection box, when circuit overvoltage or is had
During moment thunder and lightning, lightning current is led to underground by power lightning protection circuit, ensures the continuous service of connection equipment, not by the shadow of lightning current
Ring, realize the carrying out surge protection of circuit, so as to avoid distribution transforming electric load management through quantification terminal, distribution transforming measure monitor terminal,
Three-phase intelligent ammeter is by broken by lightning., can compatible three-phase three meanwhile above-mentioned combined connection box uses three-phase and four-line structure design
The power supply Connection Mode of two kinds of line, three-phase and four-line standards.
2nd, above-mentioned combined connection box is provided with RS485 signal lighting protection circuits and GPRS signal lighting protection circuits, collection AC220V electricity
Source, RS485 signals, GPRS signal carrying out surge protection functions suppress two in one, the RS485 signal lighting protection circuits using two-way transient state
Pole pipe, three pole gas put pipe, realize the dual surging prevention of signal circuit；The GPRS signal lighting protection circuits use one two
Pole gas, which puts pipe, realizes the carrying out surge protection of GPRS signals.
3rd, electrode surge arrester Q1, the electrode surge arrester Q2 in the RS485 signal lighting protection circuits can be used as isolating device
It is connected between the RS485 signal lighting protection circuits and ground so that the RS485 signal lighting protection circuits floating ground, it is described
Two pole discharge tube GDT5 in GPRS signal lighting protection circuits can be connected to the GPRS signal lighting protection circuits as isolating device
Between ground so that the GPRS signal lighting protection circuits floating ground；Above-mentioned setting realizes power lightning protection circuit, RS485 letters
Number lightning protection circuit is isolated with three circuit grounds of GPRS signal lighting protection circuits, when can avoid the lightning current from releasing three circuits it
Between influence each other.
4th, the wiring hole set on the side wall of outer shell of above-mentioned combined connection box measures with existing conventional distribution transforming electric load
Management terminal, distribution transforming measure monitor terminal, the connection terminal row of three-phase intelligent ammeter are compatible so that it is of the present utility model possess it is anti-
The combined connection box of thunder function can be with distribution transforming electric load management through quantification terminal, distribution transforming measure monitor terminal, three-phase intelligent electricity
The compatible installation of table.
Preferred embodiment of the present utility model is the foregoing is only, rather than any formal limit is done to the utility model
System.Those skilled in the art can impose various equivalent changes and improvement on the basis of above-described embodiment, all to be wanted in right
The equivalent variations done in the range of asking or modification, it all should fall within the scope of protection of the utility model.
Claims (10)
1. a kind of combined connection box for possessing lightning protection function, including shell, A phase voltage inlet wires connection end is installed in the shell
Son, A phase voltage outlets connection terminal, B phase voltage inlet wires connection terminal, B phase voltage outlets connection terminal, C phase voltages inlet wire connect
Connecting terminal, C phase voltage outlets connection terminal, N phase voltage inlet wires connection terminal, N phase voltage outlet connection terminals, its feature exist
In：A power lightning protection circuit is additionally provided with the shell, the power lightning protection circuit includes A phase voltages connecting line, B phase voltages
Connecting line, C phase voltages connecting line, N phase voltages connecting line and four power lightning protection units, wherein,
The first end of the A phase voltages connecting line connects the A phase voltages inlet wire connection terminal, the A phase voltages connecting line
Second end connects the A phase voltages outlet connection terminal；The first end of the B phase voltages connecting line connects the B phase voltages and entered
Line connection terminal, the second end of the B phase voltages connecting line connect the B phase voltages outlet connection terminal；The C phase voltages connect
The first end of wiring connects the C phase voltages inlet wire connection terminal, and the second end of the C phase voltages connecting line connects the C phases
Voltage outlet connection terminal；The first end of the N phase voltages connecting line connects the N phase voltages inlet wire connection terminal, the N phases
Second end of voltage connecting wire connects the N phase voltages outlet connection terminal；
The input of four power lightning protection units connects A phase voltages connecting line, B phase voltages connecting line, C phase voltages and connected respectively
Wiring, N phase voltage connecting lines, the output end of four power lightning protection units are grounded.
2. combined connection box as claimed in claim 1, it is characterised in that：The power lightning protection unit includes two pressures in parallel
Quick resistance and one or two pole discharge tubes, input of described two piezo-resistance one end in parallel as power lightning protection unit are another
End is connected with one end of two pole discharge tube, and the other end of two pole discharge tube exports as the power supply of power lightning protection unit
End.
3. combined connection box as claimed in claim 2, it is characterised in that：The power lightning protection circuit also includes four inductance,
One end of four inductance connects A phase voltages connecting line, B phase voltages connecting line, C phase voltages connecting line, N phase voltages and connected respectively
Second end of wiring, the other end of four inductance are respectively connecting to A phase voltage outlets connection terminal, B phase voltages outlet company
Connecting terminal, C phase voltage outlets connection terminal, N phase voltage outlet connection terminals.
4. combined connection box as claimed in claim 1, it is characterised in that：RS485 inlet wires connection end is installed in the shell
Son, RS485 outlet connection terminals, a RS485 is connected between the RS485 inlet wires connection terminal, RS485 outlet connection terminals
Signal lighting protection circuit, the RS485 signal lighting protection circuits include four data connecting lines and two signal lighting protection units, wherein,
The first end of the four datas connecting line as the RS485 signal lighting protection circuits signal input part with it is described
RS485 inlet wires connection terminal connects, the letter of the second end of the four datas connecting line as the RS485 signal lighting protection circuits
Number output end is connected with the RS485 outlets connection terminal；
The four datas connecting line includes two and sends data wire and two reception data wires, one of signal lighting protection
The first terminals and the second terminals of unit are respectively connecting to the first end of two transmissions data wire；Another signal is prevented
The first terminals and the second terminals of thunder unit are respectively connecting to the first end of two receptions data wire；Described two letters
3rd terminals of number lightning protection unit are grounded.
5. combined connection box as claimed in claim 4, it is characterised in that：The signal lighting protection unit discharges including one or three poles
Pipe；First terminals and second wiring of two inputs of the electrode surge arrester respectively as the signal lighting protection unit
End, the 3rd terminals of the output end of the electrode surge arrester as the signal lighting protection unit.
6. combined connection box as claimed in claim 5, it is characterised in that：The RS485 signal lighting protection circuits also include four
Individual resistance, eight diodes and a two-way Transient Suppression Diode；
One end of four resistance connects the second end of the four datas connecting line, the other end of four resistance respectively
Signal output part as the RS485 signal lighting protection circuits；
The signal output part of the RS485 signal lighting protection circuits connects the anode of wherein four diodes respectively, four two poles
The negative electrode of pipe is all connected with one end of the two-way Transient Suppression Diode；
The signal output part of the RS485 signal lighting protection circuits connects the negative electrode of four additional diode, the four additional respectively
The anode of diode is all connected with the other end of the two-way Transient Suppression Diode.
7. the combined connection box as described in claim any one of 1-6, it is characterised in that：SMA inlet wires are installed in the shell
Connection terminal, SMA outlet connection terminals, a GPRS is connected between the SMA inlet wires connection terminal, SMA outlet connection terminals
Signal lighting protection circuit, the GPRS signal lighting protection circuits include two GPRS signal datas connecting lines and a GPRS signal lighting protections
Unit；
The first end of two GPRS signal data connecting lines inputs as the GPRS signals of the GPRS signal lighting protection circuits
End is connected with the SMA inlet wires connection terminal, and the second end of two GPRS signal data connecting lines is believed as the GPRS
The GPRS signal output parts of number lightning protection circuit are connected with the SMA outlets connection terminal；
First connection end of the GPRS signal lighting protections unit is connected to a wherein GPRS signal data connecting line, the GPRS
The second connection end of signal lighting protection unit is connected to another GPRS signal datas connecting line and is grounded.
8. combined connection box as claimed in claim 7, it is characterised in that：The GPRS signal lighting protections unit is put including one or two poles
Fulgurite, the first connection end of the input of two pole discharge tube as the GPRS signal lighting protections unit；The two pole electric discharge
Second connection end of the output end of pipe as the GPRS signal lighting protections unit.
9. combined connection box as claimed in claim 1, it is characterised in that：Be provided with the side wall of the shell respectively with it is described
A phase voltage inlet wires connection terminal, A phase voltage outlets connection terminal, B phase voltage inlet wires connection terminal, B phase voltage outlets connection end
Son, C phase voltage inlet wires connection terminal, C phase voltage outlets connection terminal, N phase voltage inlet wires connection terminal, the outlet of N phase voltages connect
The corresponding wiring hole of connecting terminal.
10. combined connection box as claimed in claim 9, it is characterised in that：The A phase voltages outlet connection terminal, B phase voltages
Outlet connection terminal, C phase voltage outlets connection terminal, the number of N phase voltage outlet connection terminals are three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721012252.1U CN207082799U (en) | 2017-08-14 | 2017-08-14 | A kind of combined connection box for possessing lightning protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721012252.1U CN207082799U (en) | 2017-08-14 | 2017-08-14 | A kind of combined connection box for possessing lightning protection function |
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| CN207082799U true CN207082799U (en) | 2018-03-09 |
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| CN201721012252.1U Active CN207082799U (en) | 2017-08-14 | 2017-08-14 | A kind of combined connection box for possessing lightning protection function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390887A (en) * | 2017-08-14 | 2019-02-26 | 深圳康普盾科技股份有限公司 | A kind of combined connection box having lightning protection function |
| CN109856436A (en) * | 2019-01-09 | 2019-06-07 | 国网上海市电力公司 | A kind of electric energy metering device |
| CN110401179A (en) * | 2019-06-21 | 2019-11-01 | 国网江苏省电力有限公司泰州供电分公司 | A kind of low voltage power transmission net self- recoverage shock resistance structure |
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2017
- 2017-08-14 CN CN201721012252.1U patent/CN207082799U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390887A (en) * | 2017-08-14 | 2019-02-26 | 深圳康普盾科技股份有限公司 | A kind of combined connection box having lightning protection function |
| CN109390887B (en) * | 2017-08-14 | 2024-02-02 | 深圳康普盾科技股份有限公司 | Combined junction box with lightning protection function |
| CN109856436A (en) * | 2019-01-09 | 2019-06-07 | 国网上海市电力公司 | A kind of electric energy metering device |
| CN110401179A (en) * | 2019-06-21 | 2019-11-01 | 国网江苏省电力有限公司泰州供电分公司 | A kind of low voltage power transmission net self- recoverage shock resistance structure |
| CN110401179B (en) * | 2019-06-21 | 2022-03-08 | 国网江苏省电力有限公司泰州供电分公司 | Low-voltage power transmission network self-recovery impact-resistant structure |
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Effective date of registration: 20200715 Address after: Room 129-130, first floor, building 1, Jiangyue garden, Waihai street, Jianghai District, Jiangmen City, Guangdong Province Patentee after: Jiangmen Kangpu Dun Technology Co., Ltd Address before: 518000, A, building 10, room 1001, room 1-17 (office only), main building, fragrant square, North Road, overseas Chinese city, Shenzhen, Guangdong, Nanshan District Patentee before: SHENZHEN COMPTON TECHNOLOGY Co.,Ltd. |
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