CN208820302U - A kind of low-pressure grid-connection electricity box - Google Patents
A kind of low-pressure grid-connection electricity box Download PDFInfo
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- CN208820302U CN208820302U CN201821498538.XU CN201821498538U CN208820302U CN 208820302 U CN208820302 U CN 208820302U CN 201821498538 U CN201821498538 U CN 201821498538U CN 208820302 U CN208820302 U CN 208820302U
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- seal case
- electrically connected
- installation panel
- breaker
- power distribution
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Abstract
A kind of low-pressure grid-connection electricity box, comprising: seal case, inside is equipped with installation panel, power distribution circuit and demarcation plate, with box cover cooperating；Installation panel is mounted on inside seal case for installing power distribution circuit；Demarcation plate is mounted in seal case, is detachably connected with seal case for seal case to be separated into gauge table room and line-in and line-out chamber；Box cover, with seal case cooperating；Power distribution circuit, for completing distribution action, component is installed on installation panel.The combination of grid-connected overvoltage/undervoltage protection, earth leakage protective and surge protection, realizes the full guard of grid-connected technical need, the application of all-purpose.
Description
Technical field
The utility model relates to electrical equipment technical fields, and in particular to a kind of low-pressure grid-connection electricity box.
Background technique
With the continuous development demand that new energy low pressure is grid-connected, root Ju low pressure is grid-connected and operation characteristic, research
And low pressure photovoltaic power generation grid-connecting electricity box are devised, comprehensively consider the principle and technical work demand in grid-connected operation each stage,
Protected by anti-down power transmission, leakage be spaced apart, the multinomial element combination configuration such as self-resetting type undervoltage protection device, surge protection, become low pressure
Grid-connected standardized designs scheme.
Chinese publication CN207320645U, publication date on May 4th, 2018, a kind of entitled light of innovation and creation
It lies prostrate grid-connected distribution box and discloses a kind of grid-connected distribution box comprising upper box and lower box, wherein the upper box is for pacifying
Ammeter is filled, lower box is used for mounting related components.Grid-connected distribution box disclosed herein can not only install switch, miniature
The components such as breaker can also install ammeter simultaneously, avoid operator and ammeter box is gone to install ammeter again, improve installation effect
Rate.
But the above-mentioned utility model of its shortcoming provides only a kind of conventional grid-connected electricity box, can not accomplish electricity box
The function of protection.
Utility model content
The utility model is for a kind of low-pressure grid-connection electricity box of the grid-connected required protection design of low pressure.
A kind of low-pressure grid-connection electricity box, comprising:
Seal case, inside is equipped with installation panel, power distribution circuit and demarcation plate, with box cover cooperating；
Installation panel is mounted on inside seal case for installing power distribution circuit；
Demarcation plate is mounted in seal case, for seal case to be separated into gauge table room and line-in and line-out chamber with sealing
Cabinet is detachably connected；
Box cover, with seal case cooperating；
Power distribution circuit, for completing distribution action, component is installed on installation panel.
Preferably, the power distribution circuit, comprising:
Single-phase electric energy meter, one end is switched with mains isolation and meter protective breaker is electrically connected, and the other end and photovoltaic are double
Throw the electrical connection of the first output end of disconnecting switch；
Mains isolation switch, one end are electrically connected with alternating current, the other end and meter protective breaker and single-phase electric energy meter electricity
Connection；
Photovoltaic double-throw disconnecting switch, input terminal are electrically connected with Self-recover overvoltage-undervoltage protector, the first output end and single-phase electricity
Energy table electrical connection, second output terminal ground connection；
Self-recover overvoltage-undervoltage protector, one end are electrically connected with photovoltaic double-throw disconnecting switch input terminal, and the other end and electric leakage are protected
Protect circuit breaker electric connection；
Earth leakage circuit breaker, one end are electrically connected with Self-recover overvoltage-undervoltage protector, the other end and photovoltaic protective breaker
And surge protection circuit breaker electric connection；
Photovoltaic protective breaker, one end are electrically connected with earth leakage circuit breaker, and the other end is electrically connected with inverter output end；
Surge protection breaker, one end are electrically connected with earth leakage circuit breaker and photovoltaic protective breaker, the other end with
Surge Protector electrical connection；
Surge Protector, one end are connect with surge protection circuit breaker electric, other end ground connection；
Meter protective breaker is electrically connected with single-phase electric energy meter and mains isolation switch.
Preferably, the installation panel, comprising:
The buckle group installed in groups is fixedly connected with installation panel for blocking the electrical component in power distribution circuit；
Connecting terminal is mounted in installation panel front line-in and line-out chamber, and connecting terminal should be provided between seal case
The distance of seal case total length 1/5；
Line three-way hole is walked at several backs, and setting is on installation panel；
Single-phase meter bracket, for installing single-phase meter, setting is fixedly connected in gauge table room front with installation panel.
Preferably, the box cover, comprising:
Sealing ring, setting is in box cover inner surface, for installing sealing flexible plastic, with seal case cooperating；
Flexible plastic is sealed, is arranged in sealing ring outer ring, is fixedly connected with sealing ring；
Observation window is arranged on the corresponding box cover in gauge table room；
Buckle structure is being arranged for detaining seal case in box cover top edge.
Preferably, the seal case, comprising:
Top and bottom are arranged on the inside of seal case for installing demarcation plate in symmetrically arranged demarcation plate mounting groove；
Several wire inlet-outlets are separately positioned on seal case top box face and seal case nowel face；
Screwed union is arranged on wire inlet-outlet, for being sealed to cabinet；
Oil seal ring is arranged on screwed union, for carrying out oil sealing to screwed union.
Preferably, the power distribution circuit further includes collector, for acquiring single-phase electric energy meter data information and transmitting
Power grid communication network is given, is electrically connected with single-phase electric energy meter.
The utility model has the beneficial effects that: grid-connected overvoltage/undervoltage is protected, earth leakage protective and surge protection
Combination, realizes the full guard of grid-connected technical need, the application of all-purpose.
Detailed description of the invention
Fig. 1 electricity box front elevation；
Fig. 2 electricity box circuit diagram；
Fig. 3 electricity box side view；
In figure: 1, seal case, 2, box cover, 3, installation panel, 4, buckle structure, 5, demarcation plate, 6, single-phase electric energy
Table, 7, mains isolation switch, 8, meter protective breaker, 9, photovoltaic double-throw disconnecting switch, 10, connecting terminal, 11, buckle group,
12, collector；
In circuit diagram: KWH, single-phase electric energy meter, QS1, mains isolation switch, QS2, photovoltaic double-throw disconnecting switch, GQ, runback
Formula overvoltage-undervoltage protector, 1QF, earth leakage circuit breaker, 2QF, photovoltaic protective breaker, 3QF, surge protection breaker, SPD,
Surge Protector, 4QF, meter protective breaker, TQ, collector.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, the technical solution of the utility model is made further specifically
It is bright.
Embodiment 1
It is described as shown in Fig. 1 and Fig. 3
A kind of low-pressure grid-connection electricity box, comprising:
Seal case 1, inside are equipped with installation panel 3, power distribution circuit and demarcation plate 5, cooperate work with box cover 2
Make；
Installation panel 3 is mounted on inside seal case 1 for installing power distribution circuit；
Demarcation plate 5 is mounted in seal case 1 for seal case 1 to be separated into gauge table room and line-in and line-out chamber, with
Seal case 1 is detachably connected；
Box cover 2, with 1 cooperating of seal case；
Power distribution circuit, for completing distribution action, component is installed on installation panel 3.
When installation, component is installed to according to the bayonet on installation panel 3 by designated position, and connect electric wire；Assembly
Good installation panel 3 is put into seal case 1 and is inserted into demarcation plate 5；Alternating current and photovoltaic DC-to-AC converter input line are connected to electricity box
It is interior；Box cover 2 is finally buckled, and is locked by the structure that bottom is reserved.
Wherein preceding two installation steps can be pre-assembled so that when practice, as long as completing unlock, connect alternating current and
In photovoltaic DC-to-AC converter input line to electricity box, buckles box cover 2 and lock.
Using seal case 1 design can the equipment to the greatest extent in guard box not will receive environment and influence and cause
Non-natural damage increases the stability and service life of equipment work.
The power distribution circuit, comprising:
Single-phase electric energy meter 6, one end are electrically connected with mains isolation switch 7 and meter protective breaker 8, the other end and photovoltaic
The electrical connection of 9 first output end of double-throw disconnecting switch；
Mains isolation switch 7, one end is electrically connected with alternating current, the other end and meter protective breaker 8 and single-phase electric energy meter 6
Electrical connection；
Photovoltaic double-throw disconnecting switch 9, input terminal is electrically connected with Self-recover overvoltage-undervoltage protector, the first output end and single-phase electricity
Energy table 6 is electrically connected, second output terminal ground connection；
Self-recover overvoltage-undervoltage protector, one end are electrically connected with 9 input terminal of photovoltaic double-throw disconnecting switch, and the other end and electric leakage are protected
Protect circuit breaker electric connection；
Earth leakage circuit breaker, one end are electrically connected with Self-recover overvoltage-undervoltage protector, the other end and photovoltaic protective breaker
And surge protection circuit breaker electric connection；
Photovoltaic protective breaker, one end are electrically connected with earth leakage circuit breaker, and the other end is electrically connected with inverter output end
It connects；；
Surge protection breaker, one end are electrically connected with earth leakage circuit breaker and photovoltaic protective breaker, the other end with
Surge Protector electrical connection；
Surge Protector, one end are connect with surge protection circuit breaker electric, other end ground connection；
Meter protective breaker 8 is electrically connected with single-phase electric energy meter 6 and mains isolation switch 7.
It can achieve by the conjunctive use of protective breaker and protect ammeter required for this utility model, grid-connected institute
Can lead to the problem of can also be addressed by the utilization of protective breaker.
The utilization of a variety of breaker protectors solves fault caused by various accidents, and breaker Self-resetting energy
The appointment for enough reducing service personnel, reduces the workload of staff, increases the working efficiency of equipment.
The installation panel 3, comprising:
The buckle group 11 installed in groups is fixed with installation panel 3 and is connected for blocking the electrical component in power distribution circuit
It connects；
Connecting terminal 10 is mounted in the positive line-in and line-out chamber of installation panel 3, and connecting terminal 10 should be between seal case 1
It is provided with the distance of 1 total length 1/5 of seal case；
Line three-way hole is walked at several backs, and setting is on installation panel 3；
Single-phase meter bracket, for installing single-phase meter, setting is fixedly connected in gauge table room front with installation panel 3.
The setting of buckle group 11 can be convenient the installation of circuit components, reduces the workload of constructor, passes through back
Walking line three-way hole can make the connecting line between fixed component be not exposed under front lighting photograph, slow down asking for illumination ageing
Topic, while can solve frontal line and having passed by more problems.
The box cover 2, comprising:
Sealing ring, setting is in 2 inner surface of box cover, for installing sealing flexible plastic, with 1 cooperating of seal case；
Flexible plastic is sealed, is arranged in sealing ring outer ring, is fixedly connected with sealing ring；
Observation window is arranged on the corresponding box cover 2 in gauge table room；
Buckle structure 4 is being arranged for detaining seal case 1 in 2 top edge of box cover.
The seal case 1, comprising:
Symmetrically arranged 5 mounting groove of demarcation plate is arranged for installing demarcation plate 5 in 1 inside top and bottom of seal case；
Several wire inlet-outlets are separately positioned on 1 nowel face of 1 top box face of seal case and seal case；
Screwed union is arranged on wire inlet-outlet, for being sealed to cabinet；
Oil seal ring is arranged on screwed union, for carrying out oil sealing to screwed union.
The power distribution circuit further includes collector 12, for acquiring 6 data information of single-phase electric energy meter and sending power grid to
Communication network is electrically connected with single-phase electric energy meter 6.
Claims (6)
1. a kind of low-pressure grid-connection electricity box characterized by comprising
Seal case, inside is equipped with installation panel, power distribution circuit and demarcation plate, with box cover cooperating；
Installation panel is mounted on inside seal case for installing power distribution circuit；
Demarcation plate is mounted in seal case, for seal case to be separated into gauge table room and line-in and line-out chamber with seal case
It is detachably connected；
Box cover, with seal case cooperating；
Power distribution circuit, for completing distribution action, component is installed on installation panel.
2. a kind of low-pressure grid-connection electricity box according to claim 1, which is characterized in that the power distribution circuit, comprising:
Single-phase electric energy meter, one end and mains isolation switch and meter protective breaker be electrically connected, the other end and photovoltaic double-throw every
It leaves and closes the electrical connection of the first output end；
Mains isolation switch, one end are electrically connected with alternating current, and the other end is electrically connected with meter protective breaker and single-phase electric energy meter；
Photovoltaic double-throw disconnecting switch, input terminal are electrically connected with Self-recover overvoltage-undervoltage protector, the first output end and single-phase electric energy meter
Electrical connection, second output terminal ground connection；
Self-recover overvoltage-undervoltage protector, one end are electrically connected with photovoltaic double-throw disconnecting switch input terminal, and the other end and earth leakage protective are disconnected
The electrical connection of road device；
Earth leakage circuit breaker, one end are electrically connected with Self-recover overvoltage-undervoltage protector, the other end and photovoltaic protective breaker and
The connection of surge protection circuit breaker electric；
Photovoltaic protective breaker, one end are electrically connected with earth leakage circuit breaker, and the other end is electrically connected with inverter output end；
Surge protection breaker, one end are electrically connected with earth leakage circuit breaker and photovoltaic protective breaker, the other end and surge
Protector electrical connection；
Surge Protector, one end are connect with surge protection circuit breaker electric, other end ground connection；
Meter protective breaker is electrically connected with single-phase electric energy meter and mains isolation switch.
3. a kind of low-pressure grid-connection electricity box according to claim 2, which is characterized in that the installation panel, comprising:
The buckle group installed in groups is fixedly connected with installation panel for blocking the electrical component in power distribution circuit；
Connecting terminal is mounted in installation panel front line-in and line-out chamber, and connecting terminal should be provided with sealing between seal case
The distance of cabinet total length 1/5；
Line three-way hole is walked at several backs, and setting is on installation panel；
Single-phase meter bracket, for installing single-phase meter, setting is fixedly connected in gauge table room front with installation panel.
4. a kind of low-pressure grid-connection electricity box according to claim 1 or 3, which is characterized in that the box cover, comprising:
Sealing ring, setting is in box cover inner surface, for installing sealing flexible plastic, with seal case cooperating；
Flexible plastic is sealed, is arranged in sealing ring outer ring, is fixedly connected with sealing ring；
Observation window is arranged on the corresponding box cover in gauge table room；
Buckle structure is being arranged for detaining seal case in box cover top edge.
5. a kind of low-pressure grid-connection electricity box according to claim 3, which is characterized in that the seal case, comprising:
Top and bottom are arranged on the inside of seal case for installing demarcation plate in symmetrically arranged demarcation plate mounting groove；
Several wire inlet-outlets are separately positioned on seal case top box face and seal case nowel face；
Screwed union is arranged on wire inlet-outlet, for being sealed to cabinet；
Oil seal ring is arranged on screwed union, for carrying out oil sealing to screwed union.
6. a kind of low-pressure grid-connection electricity box according to claim 2, which is characterized in that the power distribution circuit further includes acquisition
Device is electrically connected for acquiring single-phase electric energy meter data information and sending power grid communication network to single-phase electric energy meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821498538.XU CN208820302U (en) | 2018-09-13 | 2018-09-13 | A kind of low-pressure grid-connection electricity box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821498538.XU CN208820302U (en) | 2018-09-13 | 2018-09-13 | A kind of low-pressure grid-connection electricity box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208820302U true CN208820302U (en) | 2019-05-03 |
Family
ID=66277070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821498538.XU Active CN208820302U (en) | 2018-09-13 | 2018-09-13 | A kind of low-pressure grid-connection electricity box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208820302U (en) |
-
2018
- 2018-09-13 CN CN201821498538.XU patent/CN208820302U/en active Active
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