CN210923802U - Split type three-phase three-wire high-voltage electric energy metering box - Google Patents
Split type three-phase three-wire high-voltage electric energy metering box Download PDFInfo
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- CN210923802U CN210923802U CN201921430831.7U CN201921430831U CN210923802U CN 210923802 U CN210923802 U CN 210923802U CN 201921430831 U CN201921430831 U CN 201921430831U CN 210923802 U CN210923802 U CN 210923802U
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- 238000009434 installation Methods 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 2
- 239000000178 monomer Substances 0.000 abstract description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000005538 encapsulation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a three-way high-voltage electric energy batch meter of split type three-phase, including two single-phase combination mutual-inductors, single-phase combination mutual-inductor includes power end, load end and the B phase voltage end of being connected with high-voltage electric network, and two single-phase combination mutual-inductors independently encapsulate and can exchange, and two single-phase combination mutual-inductors exchange the back, power end, load end and B phase voltage end are unchangeable with the position of connection of the power of high-voltage electric network, load, the lead wire of B phase line, make up into a three-phase three-way high-voltage electric energy batch meter with the appearance structure and the same single-phase combination mutual-inductor monomer of internal connection of two independent encapsulation and realize the electric energy measurement, greatly reduced the free.
Description
[ technical field ]
The utility model relates to a belong to measuring instrument, concretely relates to three-way high-voltage electric-energy metering box of split type three-phase.
[ background art ]
The electric energy measurement is each link economic accounting of electric wire netting, the foundation of charging, three-way three-wire high voltage electric energy metering box of three-phase is one kind and uses more extensive high-voltage metering device in 6kV ~ 10kV high voltage electric wire netting, generally make up by two voltage transformer and two current transformer and encapsulate integratively, therefore have characteristics such as compact structure, but, from the utility model discloses a, one when having a mutual-inductor to damage in having four mutual-inductors, whole metering box can be whole scrapped, cause the waste, still deposit equipment still comparatively overweight when the installation simultaneously, outdoor rack, the inconvenient scheduling problem of installation on the post.
Like chinese utility model patent "an outdoor two components three phase power metering box of area protection is CN 108535525A, application date: in 2018, 7 and 5 days ", although products and related electrical equipment can be protected by additionally arranging a fuse, the problems that the whole needs to be replaced after a fault, the installation is inconvenient and the like cannot be solved.
[ contents of utility model ]
The utility model overcomes above-mentioned technique is not enough, a three-way high-voltage electric energy batch meter of split type three-phase is provided, the appearance structure that packs with two independence and the same single-phase combination mutual-inductor monomer of internal connection make up into a three-phase three-way high-voltage electric energy batch meter and realize the electric energy metering, greatly reduced the free weight of installation of batch meter, the installation is light, it can to change the single-phase combination mutual-inductor monomer of corresponding side when single mutual-inductor damages, the contradiction of whole batch meter device compact structure and the installation lightness has rationally been solved, the interchange problem of two monomer equipment of batch meter has still been solved, reducible spare part cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a three-way high-voltage electric energy metering box of split type three-phase, includes two single-phase combined mutual inductor 1, single-phase combined mutual inductor 1 includes power end 2, load end 3 and the B phase voltage end 4 of being connected with high voltage electric network, and two single-phase combined mutual inductors 1 independently encapsulate and can exchange, and two single-phase combined mutual inductors 1 exchange the back, power end 2, load end 3 and B phase voltage end 4 are unchangeable with power, load, the position of being connected of the lead wire of B phase line of high voltage electric network.
According to the split type three-phase three-wire high-voltage electric energy metering box, the single-phase combined transformer 1 is provided with the voltage end insulating connecting arm 13 which extends upwards and protrudes out, and the B-phase voltage end 4 is arranged on the voltage end insulating connecting arm 13.
According to the split type three-phase three-wire high-voltage electric energy metering box, the fuses 7 are respectively connected between the power supply end 2 and one primary end of the voltage transformer 6 and between the B-phase voltage end 4 and the other primary end of the voltage transformer 6.
A three-way high-voltage electric-energy metering box of split type three-phase, be equipped with the installation cavity on power end insulating link arm 11 and the voltage end insulating link arm 13 respectively, be fixed with conductive spring 14 in the installation cavity respectively, two conductive spring 14 stiff ends are connected with voltage transformer 6 both ends once respectively, conductive spring 14 elastic end is connected with fuse 7 that sets up in the installation cavity respectively, the fuse 7 other end that sets up in power end insulating link arm 11 installation cavity passes through the elastic contact piece and is connected with power end 2 of installation cavity open end, the fuse 7 other end that sets up in the voltage end insulating link arm 13 installation cavity passes through the elastic contact piece and is connected with B looks voltage end 4 of installation cavity open end.
According to the split type three-phase three-wire high-voltage electric energy metering box, the opening end of the installation cavity is provided with the sealing cover in detachable connection or fixed connection.
The utility model has the advantages that:
1. with three-wire high-voltage electricity of three-phase can the batch meter divide into two independent single-phase combination mutual-inductors, single equipment weight alleviates, is convenient for install and remove on the post or on the distribution rack, and is compacter for current four independent mutual-inductors structures.
2. When a single mutual inductor is damaged, the single-phase combined mutual inductor at the corresponding side is replaced without replacing the integrated whole metering box, so that the replacement equipment of the split type metering box is less than that of the three-phase integrated one, and the loss can be reduced.
3. After the single-phase combined mutual inductor is divided into two independent single-phase combined mutual inductors, after one single-phase combined mutual inductor breaks down, the work of the other single-phase combined mutual inductor is not influenced, the three-phase full voltage loss is not caused, and the remote meter reading and fault alarming functions are not influenced.
4. Because voltage transformer must have a termination power, ensures that voltage transformer's primary side electric current does not flow through current transformer, if the side direction sets up the insulation support who connects other phase voltages, then two single-phase combination mutual-inductors must have one the insulation support who connects other phase voltages in the left side of power end, another on the right side of power end, two single-phase combination mutual-inductors can not exchange, increase spare parts cost, the utility model discloses a make progress vertical insulation support that sets up on current transformer, then two single-phase combination mutual-inductors can exchange, can reduce the variety of spare parts, therefore practice thrift the spare parts cost.
5. The fuses are respectively arranged at two ends of the primary side of the voltage transformer, so that the expansion of the fault of the short circuit between the primary side and the ground can be prevented, and if the fault of the short circuit between the primary side of the voltage transformer and the ground occurs, the fuses at the two ends of the primary side of the voltage transformer are immediately fused, so that the voltage transformer is separated from a high-voltage power grid, and the expansion of the fault is prevented.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of a single-phase combined transformer;
FIG. 2 is a wiring schematic diagram of a single-phase combined transformer
FIG. 3 is a schematic structural diagram of a single-phase combined transformer with a built-in fuse;
FIG. 4 is a wiring schematic diagram of a built-in fuse single-phase combined transformer;
FIG. 5 is a schematic structural diagram of a split type three-phase three-wire high-voltage electric energy metering box;
fig. 6 is a wiring schematic diagram of the split type three-phase three-wire high-voltage electric energy metering box.
[ detailed description of the invention ]
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.
As shown in fig. 1 and 2, the single-phase combined transformer 1 has a structure, the single-phase combined transformer 1 includes a power supply terminal 2 connected to a high-voltage power grid, a load terminal 3, and a B-phase voltage terminal 4, a single-phase current transformer 5 and a single-phase voltage transformer 6 are disposed in the single-phase combined transformer 1, two ends of a primary side of the single-phase current transformer 5 are respectively connected to the power supply terminal 2 and the load terminal 3, two ends of a primary side of the single-phase voltage transformer 6 are respectively connected to the power supply terminal 2 and the B-phase voltage terminal 4, and two ends of a secondary side of the single-phase current transformer 5 and two ends of.
The single-phase combined transformer 1 is provided with a power end insulating connecting arm 11, a load end insulating connecting arm 12 and a voltage end insulating connecting arm 13, wherein the power end insulating connecting arm 11 and the load end insulating connecting arm 12 extend towards two sides respectively, the voltage end insulating connecting arm 13 extends upwards, the power end 2 is arranged on the power end insulating connecting arm 11, the load end 3 is arranged on the load end insulating connecting arm 12, and the B-phase voltage end 4 is arranged on the voltage end insulating connecting arm 13.
Because the B-phase voltage end 4 is arranged on the insulating connecting arm 13 which extends upwards, the problem that if one of the two B-phase voltage ends extends out from the right side, the other B-phase voltage end must extend out from the left side, and the two B-phase voltage ends are different in structure and cannot be interchanged when the original integrated three-phase three-wire high-voltage electric energy metering box is simply split is solved.
As shown in fig. 3 and 4, a fuse 7 is respectively connected between the power supply terminal 2 and one primary end of the voltage transformer 6, and between the B-phase voltage terminal 4 and the other primary end of the voltage transformer 6, the utility model discloses a fuse-fuse terminal, including power end insulating connecting arm 11, voltage end insulating connecting arm 13, be equipped with the installation cavity on power end insulating connecting arm 11 and the voltage end insulating connecting arm 13 respectively, be fixed with conductive spring 14 in the installation cavity respectively, two conductive spring 14 stiff ends are connected with voltage transformer 6 both ends once respectively, conductive spring 14 elastic end is connected with fuse 7 that sets up in the installation cavity respectively, the fuse 7 other end that sets up in power end insulating connecting arm 11 installation cavity is connected with power end 2 through the elastic contact piece of installation cavity open end, the fuse 7 other end that sets up in voltage end insulating connecting arm 13 installation cavity is connected with B looks voltage end 4 through the elastic contact piece of installation cavity open end, the installation cavity open.
The fuse has the advantages that when the primary current of the voltage transformer rises, the metal wire in the fuse is fused, the voltage transformer is disconnected with a high-voltage power grid at one time, and the voltage transformer is prevented from being failed to influence the safe operation of the high-voltage power grid.
As shown in fig. 5 and fig. 6, the split three-phase three-wire high-voltage electric energy metering box is characterized in that: the power supply end 2 of one single-phase combined mutual inductor 1 is connected with a phase line power supply of a high-voltage power grid, the load end 3 is connected with a phase line load of the high-voltage power grid, the phase voltage end 4 of the B phase is connected with a phase line lead of the high-voltage power grid, the power supply end 2 of the other single-phase combined mutual inductor 1 is connected with a phase line power supply of the C phase of the high-voltage power grid, the load end 3 is connected with the phase line load of the C phase of the high-voltage power grid, and the phase voltage end.
As shown in fig. 5, after the two single-phase combined transformers 1 are exchanged, the connection orientations of the power supply terminal 2, the load terminal 3 and the B-phase voltage terminal 4 with the power supply, the load and the B-phase lead of the high-voltage power grid are not changed, as shown in the figure, after the two single-phase combined transformers 1 are exchanged, the power supply terminal 2 is still on, the load terminal 3 is still on, the B-phase voltage terminal 4 is still in the middle, and the two B-phase voltage terminals 4 are still connected with the B-phase lead of the high-voltage power grid through the lead between the two single-phase combined transformers 1.
When one of the single-phase combined transformers in the split type electric energy metering box breaks down, only the single-phase combined transformer which breaks down needs to be replaced, and the whole metering phase does not need to be replaced.
Because two single-phase combined transformers forming the three-phase three-wire high-voltage electric energy metering box can be exchanged and the two single-phase combined transformers are the same spare parts, the spare part cost of fault maintenance can be saved
The above description is only exemplary of the present invention and should not be taken as limiting, and any modifications, equivalents, or improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (5)
1. The utility model provides a three-way high-voltage electric energy batch meter of split type three-phase which characterized in that: the high-voltage power supply system comprises two single-phase combined transformers (1), wherein each single-phase combined transformer (1) comprises a power supply end (2), a load end (3) and a B-phase voltage end (4) which are connected with a high-voltage power grid, the two single-phase combined transformers (1) are independently packaged and can be interchanged, and after the two single-phase combined transformers (1) are interchanged, the power supply ends (2), the load ends (3) and the B-phase voltage ends (4) are unchanged from the connection position of a power supply, a load and a lead of a B-phase line of the high-voltage power.
2. The split three-phase three-wire high-voltage electric energy metering box according to claim 1, characterized in that: the single-phase combined transformer (1) is provided with a voltage end insulating connecting arm (13) extending upwards and protruding out, and the B-phase voltage end (4) is arranged on the voltage end insulating connecting arm (13).
3. The split three-phase three-wire high-voltage electric energy metering box according to claim 1, characterized in that: and fuses (7) are respectively connected between the power supply end (2) and one primary end of the voltage transformer (6) and between the B-phase voltage end (4) and the other primary end of the voltage transformer (6).
4. The split type three-phase three-wire high-voltage electric energy metering box according to claim 3, characterized in that: the power end insulating connecting arm (11) and the voltage end insulating connecting arm (13) are respectively provided with a mounting cavity, the mounting cavities are respectively internally and fixedly provided with a conductive spring (14), two fixed ends of the conductive spring (14) are respectively connected with two primary ends of a voltage transformer (6), the elastic end of the conductive spring (14) is respectively connected with a fuse (7) arranged in the mounting cavity, the other end of the fuse (7) arranged in the power end insulating connecting arm (11) mounting cavity is connected with the power end (2) through an elastic contact piece at the opening end of the mounting cavity, and the other end of the fuse (7) arranged in the voltage end insulating connecting arm (13) mounting cavity is connected with a B phase voltage end (4) through an elastic contact piece at the opening end of.
5. The split three-phase three-wire high-voltage electric energy metering box according to claim 4, characterized in that: the open end of the installation cavity is provided with a sealing cover which can be detachably connected or fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921430831.7U CN210923802U (en) | 2019-08-30 | 2019-08-30 | Split type three-phase three-wire high-voltage electric energy metering box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921430831.7U CN210923802U (en) | 2019-08-30 | 2019-08-30 | Split type three-phase three-wire high-voltage electric energy metering box |
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| Publication Number | Publication Date |
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| CN210923802U true CN210923802U (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921430831.7U Expired - Fee Related CN210923802U (en) | 2019-08-30 | 2019-08-30 | Split type three-phase three-wire high-voltage electric energy metering box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110554225A (en) * | 2019-08-30 | 2019-12-10 | 陈劲游 | split type three-phase three-wire high-voltage electric energy metering box |
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2019
- 2019-08-30 CN CN201921430831.7U patent/CN210923802U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110554225A (en) * | 2019-08-30 | 2019-12-10 | 陈劲游 | split type three-phase three-wire high-voltage electric energy metering box |
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Granted publication date: 20200703 |