CN209626656U - The transmission line circuit of low-voltage drawer cabinet - Google Patents
The transmission line circuit of low-voltage drawer cabinet Download PDFInfo
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- CN209626656U CN209626656U CN201821906026.2U CN201821906026U CN209626656U CN 209626656 U CN209626656 U CN 209626656U CN 201821906026 U CN201821906026 U CN 201821906026U CN 209626656 U CN209626656 U CN 209626656U
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- connection jaws
- low
- drawer
- transmission line
- current transformer
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Abstract
This application discloses a kind of transmission line circuits of low-voltage drawer cabinet, for testing the transmission line circuit function of low-voltage drawer cabinet, including current transformer, drawer secondary inserting piece and ammeter, current transformer, drawer secondary inserting piece and ammeter are set in the low-voltage drawer cabinet, the side of the current transformer is equipped with the first connection jaws and the second connection jaws, the ammeter is equipped with third connection jaws and the 4th connection jaws, first connection jaws are connect with the 4th connection jaws by conducting wire, second connection jaws are connect with the third connection jaws by conducting wire, the drawer secondary inserting piece is connect with first connection jaws by conducting wire.The transmission line circuit of low-voltage drawer cabinet provided by the utility model, the mode of connection is simple, reduces artificial and material cost；Current loop does not pass through secondary plugging-in element, and node is few, reduces wiring error rate and runs the failure rate of use process；Current loop route is short and no-terminal transition, and resistance is small, improves current measurement precision.
Description
Technical field
The utility model relates to technical field of electric power, and in particular to the transmission line circuit of low-voltage drawer cabinet.
Background technique
Low-voltage drawer cabinet is wide since it has many advantages, such as that interlocking mechanism is simple, the exchange of safe and reliable and drawer is flexible
It is general to be applied to the various low-voltage distribution systems such as power plant, substation, industrial and mining enterprises, building hotel, urban construction.With low tension
The development of Force system power distribution automation, it is desirable that every road outlet of low-voltage drawer cabinet has the survey of the parameters such as electric current, voltage, power
Amount, but if current loop is all completed in low voltage drawer, will be unable to facilitate progress current loop function test test.Cause
This, current loop (as shown in Figure 1) in the drawer of existing low voltage drawer includes ammeter 101, Current Mutual Inductance in a circuit
Device 102, cabinet inner terminal row 103 and two drawer secondary inserting pieces 104, need to guide to drawer by the secondary plug connector 104 of drawer
External cabinet inner terminal row 103, then leads back in drawer again.In current loop function test, drawer space is closed, mould
Quasi- electric current is applied on drawer external terminal row 103.Though this design scheme is able to satisfy using function and experimental test demand, exist
Following disadvantage:
1. circuit is excessively complicated, time-consuming, wiring procedural error rate is high；
2. current loop node is crossed, multi-line is long, and loop resistance crosses the reduction of ambassador's current measurement precision.
Utility model content
For the utility model in view of the above-mentioned problems, proposing a kind of transmission line circuit of low-voltage drawer cabinet, the mode of connection is simple, drop
It is low manually and material cost；Current loop does not pass through secondary plugging-in element, and node is few, reduces wiring error rate and operation uses
The failure rate of process；Current loop route is short and no-terminal transition, and resistance is small, improves current measurement precision.
The technical solution that the utility model is taken is as follows: the utility model provides a kind of transmission line circuit of low-voltage drawer cabinet,
For testing the transmission line circuit function of low-voltage drawer cabinet, including current transformer, drawer secondary inserting piece and ammeter, electric current are mutual
Sensor, drawer secondary inserting piece and ammeter are set in the low-voltage drawer cabinet, and the side of the current transformer is equipped with first
Connection jaws and the second connection jaws, the ammeter be equipped with third connection jaws and the 4th connection jaws, first connection jaws with it is described
4th connection jaws are connected by conducting wire, and second connection jaws are connect with the third connection jaws by conducting wire, the drawer two
Secondary plug-in unit is connect with first connection jaws by conducting wire.
In an embodiment of the present invention, the current transformer is threephase current transformer.
The beneficial effects of the utility model are: the transmission line circuit of low-voltage drawer cabinet provided by the utility model, Current Mutual Inductance
Device and ammeter are directly connected to form current loop, are only connected to current transformer and ammeter in a circuit, and circuit is simple,
Wiring is easy, and circuit does not pass through other any terminals, and the resistance in circuit is small, and measurement accuracy is high, less passes through delicate drawer
Secondary inserting piece reduces circuit in the failure rate of operation use process.
Detailed description of the invention
Fig. 1 is the appearance circuit diagram of existing low-voltage drawer cabinet；
Fig. 2 is the appearance circuit diagram of the low-voltage drawer cabinet of the utility model.
Each appended drawing reference in figure are as follows: 1, current transformer, 2, drawer secondary inserting piece, 3, ammeter, the 11, first connection jaws,
12, the second connection jaws, 31, third connection jaws, the 32, the 4th connection jaws, 101, ammeter, 102, current transformer, 103, in cabinet
Terminal block, 104, drawer secondary inserting piece.
Specific embodiment
Below with reference to each attached drawing, by specific embodiment, the utility model in detail, completely describe.
It please refers to shown in Fig. 2, the utility model provides a kind of transmission line circuit of low-voltage drawer cabinet, for testing low voltage drawer
The transmission line circuit function of cabinet, including current transformer 1, drawer secondary inserting piece 2 and ammeter 3, current transformer 1, drawer two
Secondary plug-in unit 2 and ammeter 3 are set in the low-voltage drawer cabinet, and the side of the current transformer 1 is equipped with the first connection jaws 11
With the second connection jaws 12, the ammeter 3 is equipped with third connection jaws 31 and the 4th connection jaws 32, first connection jaws 31 with
4th connection jaws 32 are connected by conducting wire, and second connection jaws 12 are connect with the third connection jaws 31 by conducting wire,
The drawer secondary inserting piece 2 is connect with first connection jaws 11 by conducting wire.Current transformer 1 is directly connected to ammeter 3
Current loop is formed, ammeter when use on drawer control and testing board samples the current transformer 1 being directly derived from drawer, and one time
Current transformer 1 and ammeter 3 are only connected in road, circuit is simple, and wiring is easy, and reduces wiring error rate, goes out for every
Line cabinet saves a large amount of working hours, reduces artificial and material cost；And circuit does not pass through other any terminals, the resistance in circuit
Small, measurement accuracy is high；Circuit does not pass through delicate drawer secondary inserting piece 2, reduces circuit in the failure of operation use process
Rate.Drawer secondary inserting piece 2 is connect with the first connection jaws 11, and only the transmission line circuit function as measurement low-voltage drawer cabinet uses, function
When can test, analog current, which is applied on drawer secondary inserting piece 2, facilitates achievable test, under taking out each drawer
To be tested.
The current transformer 1 is threephase current transformer.Threephase current transformer is also named three-in-one mutual inductor as friendship
Galvanic electricity stream signal collecting element generally can save installation space, reduce the tired of wiring with multi-loop current monitoring device
It is trivial, it is convenient for the user to use, effectively reduces cost.
The above is only the preferred embodiment of the present invention, not thereby limits the patent protection of the utility model
Range, it is all with equivalent structure transformation made by the utility model specification and accompanying drawing content, directly or indirectly it is used in it
His relevant technical field similarly includes within the protection scope of the present utility model.
Claims (2)
1. a kind of transmission line circuit of low-voltage drawer cabinet, for testing the transmission line circuit function of low-voltage drawer cabinet, which is characterized in that packet
Current transformer, drawer secondary inserting piece and ammeter are included, current transformer, drawer secondary inserting piece and ammeter are set to described
In low-voltage drawer cabinet, the side of the current transformer is equipped with the first connection jaws and the second connection jaws, and the ammeter is equipped with the
Three connection jaws and the 4th connection jaws, first connection jaws are connect with the 4th connection jaws by conducting wire, second wiring
Mouth is connect with the third connection jaws by conducting wire, and the drawer secondary inserting piece is connect with first connection jaws by conducting wire.
2. the transmission line circuit of low-voltage drawer cabinet as described in claim 1, which is characterized in that the current transformer is three-phase electricity
Current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821906026.2U CN209626656U (en) | 2018-11-19 | 2018-11-19 | The transmission line circuit of low-voltage drawer cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821906026.2U CN209626656U (en) | 2018-11-19 | 2018-11-19 | The transmission line circuit of low-voltage drawer cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209626656U true CN209626656U (en) | 2019-11-12 |
Family
ID=68444041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821906026.2U Active CN209626656U (en) | 2018-11-19 | 2018-11-19 | The transmission line circuit of low-voltage drawer cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209626656U (en) |
-
2018
- 2018-11-19 CN CN201821906026.2U patent/CN209626656U/en active Active
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