CN211697946U - Special three-phase integrated transformer for low-voltage integrated distribution box - Google Patents
Special three-phase integrated transformer for low-voltage integrated distribution box Download PDFInfo
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- CN211697946U CN211697946U CN201922183857.2U CN201922183857U CN211697946U CN 211697946 U CN211697946 U CN 211697946U CN 201922183857 U CN201922183857 U CN 201922183857U CN 211697946 U CN211697946 U CN 211697946U
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Abstract
The utility model relates to a special three-phase integrated mutual inductor of low-voltage comprehensive distribution box, which relates to the technical field of current mutual inductor and is connected with a controller, and comprises an ammeter, a communication interface, a three-phase coil, a secondary three-phase coil and a sampling resistor; aiming at each phase coil of the three-phase coil and each phase secondary coil of the secondary three-phase coil, the coil penetrates through the secondary coil and is connected with an ammeter to form a loop, and the ammeter is used for measuring the current of the three-phase coil; each phase of secondary coil is respectively connected with the sampling resistor in parallel and then connected with the communication interface, and the secondary coil is used for transmitting a voltage signal to the communication interface; the communication interface is connected with the controller. The device provided by the utility model can realize improving space utilization and measurement accuracy's purpose.
Description
Technical Field
The utility model relates to a current transformer technical field especially relates to a special integrative mutual-inductor of three-phase of block terminal is synthesized to low pressure.
Background
The technical requirements of the comprehensive distribution box for unified bidding of national network and south network are provided with a secondary measuring instrument and a reactive compensation function, the secondary instrument and a reactive compensation controller share one group of mutual inductor, the current loop is complex in wiring, the batch production efficiency is low, the cabinet body occupies a large space, the current loop uses a connector and a lead wire which are long, so that the resistance of the current loop is large, and the measurement precision is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a special integrative mutual-inductor of three-phase of block terminal is synthesized to low pressure to realize improving space utilization and measurement accuracy's purpose.
In order to achieve the above object, the utility model provides a following scheme:
a special three-phase integrated mutual inductor for a low-voltage comprehensive distribution box is connected with a controller and comprises an ammeter, a communication interface, a three-phase coil, a secondary three-phase coil and a sampling resistor;
for each phase coil of the three-phase coil and each phase secondary coil of the secondary three-phase coil, the coil penetrates through the secondary coil and is connected with an ammeter to form a loop, and the ammeter is used for measuring the current of the three-phase coil; each phase of secondary coil is respectively connected with the sampling resistor in parallel and then connected with a communication interface, and the secondary coil is used for transmitting a voltage signal to the communication interface; the communication interface is connected with the controller.
Optionally, the ammeter, the three-phase coil, the secondary three-phase coil and the sampling resistor are all packaged in the ABS flame-retardant case.
Optionally, three ammeters are arranged; each ammeter is arranged corresponding to each phase coil of the three-phase coils; the ammeter is sequentially embedded into the ABS flame-retardant shell.
Optionally, the communication interface is an RJ45 plug port; the RJ45 plug port is arranged on one surface of the ABS flame-retardant shell embedded with the ammeter.
Optionally, three secondary three-phase coils are arranged between the two three-phase coils, and the three secondary three-phase coils are electronic transformer coils.
Optionally, a busbar perforation is further arranged in the middle of each phase of the three-phase coil, and the busbar perforation is used for fixing a busbar.
Optionally, the transformer fixing hole is further included; the mutual inductor fixing hole is used for fixing the special three-phase integrated mutual inductor for the low-voltage integrated distribution box.
Optionally, the secondary coil transmits the voltage signal to the communication interface through a shielded wire.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
the utility model provides a pair of special three-phase integrated mutual inductor of block terminal is synthesized to low pressure has current display and measurement function, adopts the modularized design, makes the installation more convenient, and space utilization is high, and the secondary circuit wire is short, and impedance is little, makes measured data more accurate, can also play the female efficiency of arranging fixedly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic diagram of the special three-phase integrated mutual inductor for the low-voltage integrated distribution box of the utility model;
FIG. 2 is a front view of the three-phase integrated mutual inductor dedicated for the low-voltage integrated distribution box of the present invention;
fig. 3 is the utility model discloses the special three-phase body transformer schematic diagram of block terminal is synthesized to low pressure.
Description of the symbols:
1-ABS flame retardant housing; 2-three phase coil; 3-a mutual inductor fixing hole; 4-perforating the busbar; 5-an ammeter; 6-RJ45 plug port; 7-a shielded wire; 8-sampling resistance; and 9-electronic transformer coil.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a special integrative mutual-inductor of three-phase of block terminal is synthesized to low pressure to realize improving space utilization and measurement accuracy's purpose.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 3, the special three-phase integrated mutual inductor for the low-voltage integrated distribution box is connected with a controller, and comprises an ammeter 5, a communication interface, a three-phase coil 2, a secondary three-phase coil 2 and a sampling resistor 8.
For each phase coil of the three-phase coil 2 and each phase secondary coil of the secondary three-phase coil, the coil passes through the secondary coil and is connected with the ammeter 5 to form a loop, and the ammeter 5 is used for measuring the current of the three-phase coil 2; each phase of secondary coil is respectively connected with the sampling resistor 8 in parallel and then connected with the communication interface, and the secondary coil is used for transmitting a voltage signal to the communication interface; wherein the secondary coil transmits a voltage signal to the communication interface through a shielded wire 7; the communication interface is connected with the controller.
For convenience and practical use, the ammeter 5, the three-phase coil 2, the secondary three-phase coil and the sampling resistor 8 are all packaged in the ABS flame-retardant housing 1. Wherein, the sampling resistor is a high-precision sampling resistor.
In order to improve the space utilization rate, three secondary three-phase coils are arranged between the two three-phase coils, and the three secondary three-phase coils 2 are electronic transformer coils. The three secondary coils are arranged in parallel between the two three-phase coils. In addition, the secondary three-phase coil may be arranged between two adjacent ammeters 5 in parallel.
In addition, the ammeter 5 is provided with three; each ammeter 5 is arranged corresponding to each phase coil of the three-phase coil 2; the ammeter 5 is sequentially embedded in the ABS flame-retardant shell 1. The communication interface is an RJ45 plug port 6; the RJ45 plug port 6 is arranged on one surface of the ABS flame-retardant shell 1 embedded with the ammeter 5.
The three-phase coil 2 is characterized in that a busbar is involved in practical use, and for this purpose, a busbar through hole 4 is further formed in the middle of each phase of the three-phase coil 2, and the busbar through hole 4 is used for fixing the busbar.
For better meeting practical application, a mutual inductor fixing hole 3 is further formed in the shell of the special three-phase integrated mutual inductor for the low-voltage integrated distribution box and used for fixing the special three-phase integrated mutual inductor for the low-voltage integrated distribution box.
In the practical use process, the special three-phase integrated mutual inductor for the low-voltage comprehensive distribution box is matched with an HD11 series knife switch for use, the phase-to-phase distance of the three-phase coil 2 is determined according to an HD11 knife switch, the three-phase distance is respectively 70mm, 80mm and 100mm, the special three-phase integrated mutual inductor for the low-voltage comprehensive distribution box is widely used in a JP cabinet, corresponding transformation ratios can be selected according to different types of HD11 series switches, and the special three-phase integrated mutual inductor for the low-voltage comprehensive distribution box is suitable for series products such as HD11-200/38200A, HD11-400/38400A, HD 11-600/38600A.
The special three-phase integrated mutual inductor for the low-voltage comprehensive distribution box has more convenient installation and high space utilization rate due to the modular design; the wiring procedure of a secondary circuit is reduced, the impedance of the secondary circuit is small, and the measurement precision is more accurate; possess the current display function, built-in electronic transformer is connected convenient and fast with voltage signal transmission to RJ45 interface, with the controller.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. The special three-phase integrated mutual inductor for the low-voltage comprehensive distribution box is characterized by being connected with a controller and comprising an ammeter, a communication interface, a three-phase coil, a secondary three-phase coil and a sampling resistor;
for each phase coil of the three-phase coil and each phase secondary coil of the secondary three-phase coil, the coil penetrates through the secondary coil and is connected with an ammeter to form a loop, and the ammeter is used for measuring the current of the three-phase coil; each phase of secondary coil is respectively connected with the sampling resistor in parallel and then connected with a communication interface, and the secondary coil is used for transmitting a voltage signal to the communication interface; the communication interface is connected with the controller.
2. The special three-phase integrated mutual inductor for the low-voltage comprehensive distribution box according to claim 1, wherein the ammeter, the three-phase coil, the secondary three-phase coil and the sampling resistor are all packaged in an ABS flame-retardant shell.
3. The special three-phase integrated mutual inductor for the low-voltage comprehensive distribution box according to claim 2, wherein three ammeter instruments are arranged; each ammeter is arranged corresponding to each phase coil of the three-phase coils; the ammeter is sequentially embedded into the ABS flame-retardant shell.
4. The special three-phase integrated mutual inductor for the low-voltage comprehensive distribution box according to claim 3, wherein the communication interface is an RJ45 plug port; the RJ45 plug port is arranged on one surface of the ABS flame-retardant shell embedded with the ammeter.
5. The special three-phase integrated mutual inductor for the low-voltage comprehensive distribution box according to claim 1, wherein three secondary three-phase coils are arranged between the two three-phase coils, and the three secondary three-phase coils are electronic mutual inductor coils.
6. The special three-phase integrated transformer for the low-voltage integrated distribution box according to claim 1, wherein a busbar perforation is further arranged in the middle of each phase of the three-phase coil, and the busbar perforation is used for fixing a busbar.
7. The special three-phase integrated mutual inductor for the low-voltage comprehensive distribution box according to claim 1, further comprising a mutual inductor fixing hole; the mutual inductor fixing hole is used for fixing the special three-phase integrated mutual inductor for the low-voltage integrated distribution box.
8. The three-phase integrated mutual inductor special for the low-voltage integrated distribution box according to claim 1, wherein the secondary coil transmits a voltage signal to the communication interface through a shielded wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922183857.2U CN211697946U (en) | 2019-12-09 | 2019-12-09 | Special three-phase integrated transformer for low-voltage integrated distribution box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922183857.2U CN211697946U (en) | 2019-12-09 | 2019-12-09 | Special three-phase integrated transformer for low-voltage integrated distribution box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211697946U true CN211697946U (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922183857.2U Active CN211697946U (en) | 2019-12-09 | 2019-12-09 | Special three-phase integrated transformer for low-voltage integrated distribution box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211697946U (en) |
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2019
- 2019-12-09 CN CN201922183857.2U patent/CN211697946U/en active Active
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