CN206450817U - A kind of current transformer high current flows up line - Google Patents
A kind of current transformer high current flows up line Download PDFInfo
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- CN206450817U CN206450817U CN201621199053.1U CN201621199053U CN206450817U CN 206450817 U CN206450817 U CN 206450817U CN 201621199053 U CN201621199053 U CN 201621199053U CN 206450817 U CN206450817 U CN 206450817U
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Abstract
The utility model embodiment discloses a kind of current transformer high current up-flow line.The utility model embodiment includes：A plurality of single line, aviation plug；One end of the single line connects a public mouth binding post of the public mouth of the aviation plug, the other end of the single line connects a female mouth binding post of female mouth of the aviation plug so that a plurality of single line is connected by the aviation plug head and the tail of closure and forms closed loop connection.The utility model embodiment uses the connection of a plurality of single line and aviation plug, those skilled in the art are enabled easily to simulate the situation that high current passes through current transformer by the utility model embodiment, solve up-flow cable winding step trouble time-consuming, several circles, the limited technical problem of multiplication factor can only be wound.
Description
Technical field
The utility model is related to electrical equipment detection field, more particularly to a kind of current transformer high current up-flow line.
Background technology
Current transformer：The equipment that high current is converted to low current in electrical equipment.As shown in Figure 1, when electric current is mutual
When sensor primary side is by I1 high currents, its secondary side will produce I2 low currents in closure state by electromagnetic induction, I2 from
Current Transformer Secondary terminal flows out, and I1/I2=K, K is the design no-load voltage ratio of current transformer.
Rising test of current transformer：It is the elementary item that electrical equipment protects periodic inspection, to verify electricity
Can current transformer by no-load voltage ratio accurately be converted to secondary current by the primary current on electrical equipment.Sent out during up-flow using high current
Raw device passes through primary current I1 from current transformer primary side, Current Transformer Secondary it is coil-induced go out secondary current I2, root
Whether correct, the current transformer ratio K=I1/I2 according to the ratio verification current transformer ratio of first and second current value.If K
Value is close to the design no-load voltage ratio on current transformer nameplate, then the operation of current transformers is in good condition, can be continuing with；If
K value off-design no-load voltage ratios, then the operation of current transformers state difference, it is impossible to be continuing with.
Current transformer is mainly used in the operating current run on electrical equipment.Work electricity during electric equipment operation
The electric current that protection device is exported by current transformer damaged on electrical equipment, electrical equipment is possible to when flowing through big through no-load voltage ratio
True excessive electric current on electrical equipment can be monitored by being converted into high current, and protection device should be able to alarm or send trip signal and cut
Except the switch on electrical equipment, to prevent excessive circuit damage electrical equipment.Therefore, be electrical equipment in an exceptional case
It can be effectively protected, it periodically is verified to current transformer progress rising test whether in running order good.
The method of current current transformer up-flow verification no-load voltage ratio has two kinds：
High current flows up method：Flowed up using special strong current generator, specialty has high current to flow up equipment, typically can be defeated
Go out the electric current of the 100 peace above, the up-flow cross-section of cable used accumulates larger, generally 100mm2.From strong current generator output end
Connection once flows up cable, and up-flow cable passes through current transformer primary side, then Current Transformer Secondary lead-out terminal is short-circuit.
Start strong current generator and flow through high current to current transformer primary side, use electric current split-core type meter measurement current transform er secondary side
Electric current, no-load voltage ratio is calculated by primary side current value divided by secondary side current value.
High current directly can be exported to current transformer using high current up-flow method, no-load voltage ratio can intuitively be calculated by conversion.
But strong current generator is made with iron core and multiturn coil, including 100mm2Up-flow cable so that a full set of strong current generator
It is very heavy, move a full set of strong current generator and go out to consume very much manpower during work.
Low current flows up method：Flowed up using protection device tester, protection device tester is designed for verifying work electricity
Less protection device is flowed, 1 to 30 peace electric current can only be typically exported.The up-flow cross-section of cable used accumulates small, general 2.5mm2.From
The connection of protection device tester output end once flows up cable, and up-flow cable passes through current transformer primary side, then electric current is mutual
The short circuit of sensor secondary output terminals.Starting protection device tester flows through electric current to current transformer primary side, uses current clamp
Table measurement current transform er secondary side current, no-load voltage ratio is calculated by primary side current value divided by secondary side current value.
Method, the protection device tester average weight used are flowed up using low current, and is in verification protection device
The tester that must be carried in work, extra carry high current is not required to using protection device tester to current transformer up-flow
Generator.But its output current is smaller, for the current transformer that no-load voltage ratio is larger, it is impossible to which it is mutual to verify electric current to export high current
Sensor is when primary side flows through high current, and whether secondary side current is distorted.Staff can be in current transformer once
Side will flow up after cable winds several circles and flow up again, as shown in Figure 2, and the electric current of current transformer primary side sensing will also amplify several
Times.But winding step bothers time-consuming, the supporting test cable length of protection device tester is not oversize, can only wind several
Circle, multiplication factor is limited.Wind the method for cable in-convenience in use and effect less, using limited.
Therefore, up-flow cable winding step bothers time-consuming, can only wind several circles, and limited multiplication factor is art technology
Personnel's technical issues that need to address.
Utility model content
The utility model embodiment discloses a kind of current transformer high current up-flow line, for solving up-flow cable winding
Step bothers time-consuming, can only wind several circles, the limited technical problem of multiplication factor.
The utility model embodiment provides a kind of current transformer high current and flows up line, including：A plurality of single line, aviation are inserted
Head；
One end of the single line connects a public mouth binding post of the public mouth of the aviation plug, the single line it is another
One female mouth binding post of female mouth of the end connection aviation plug so that the aviation that a plurality of single line passes through closure
Plug head and the tail connection forms closed loop connection.
Preferably, a plurality of single line of the utility model embodiment includes head end single line, end single line and middle single line；
One end of the head end single line connects the first public mouth binding post of the public mouth of the aviation plug, the end
Hold tail female mouth binding post of female mouth of one end connection aviation plug of single line so that the head end single line, institute
State middle single line, the end single line and be in turn connected to form circuit pathways.
Preferably, the utility model embodiment also includes current transformer；
The high current up-flow line passes through the interstitial hole of the current transformer primary side, the public mouth of the aviation plug
The non-terminals connection of female mouth of non-terminals and the aviation plug.
Preferably, the utility model embodiment also includes current feedback circuit；
The current feedback circuit is connected with the head end single line, the end single line；
The current feedback circuit is streamed to the up-flow line for producing electricity.
Preferably, the utility model embodiment also includes protection device tester；
The protection device tester includes above-mentioned current feedback circuit, current detector；
The current detector connects the second siding ring of current transformer.
As can be seen from the above technical solutions, the utility model embodiment has advantages below：
The utility model embodiment discloses a kind of current transformer high current up-flow line.The utility model embodiment bag
Include：A plurality of single line, aviation plug；One end of the single line connects a public mouth binding post of the public mouth of the aviation plug,
The other end of the single line connects a female mouth binding post of female mouth of the aviation plug so that a plurality of single line passes through
The aviation plug head and the tail connection of closure forms closed loop connection.The utility model embodiment uses a plurality of single line and aviation plug
Connection so that it is mutual through overcurrent that those skilled in the art can easily simulate high current by the utility model embodiment
The situation of sensor, solves up-flow cable winding step trouble time-consuming, can only wind several circles, the limited technology of multiplication factor is asked
Topic.
In addition, compared with prior art, the utility model has the following advantages that：
1st, high current up-flow line can be superimposed the electric current of all single lines, simulate high current and flow through current transformer primary side.
2nd, flow up line using high current only need to input less electric current from head end and end, you can simulate high current.
3rd, using high current up-flow line light protection device tester can be coordinated to flow up current transformer, without removing
Move bulky special strong current generator.
4th, low current can be superimposed as to high current flow to current transformer primary side using high current up-flow line, can accurate school
Electrical verification current transformer is operated in no-load voltage ratio during rated primary current.
5th, aviation plug need to be only connected using high current up-flow line, it is simple to operate quick without coiling repeatedly.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is for illustrating that current transformer is used for the principle schematic of a rising test；
Fig. 2 is the schematic diagram of winding cable up-flow method in conventional art；
Fig. 3 flows up showing for one embodiment of line for a kind of current transformer high current that the utility model embodiment is provided
It is intended to；
A kind of another embodiment of current transformer high current up-flow line that Fig. 4 provides for the utility model embodiment
Schematic diagram；
Fig. 5 is used for the original of rising test for a kind of current transformer high current up-flow line that the utility model embodiment is provided
Manage schematic diagram.
Wherein, reference is as follows：
1st, single line；11st, single line one end；12nd, the single line other end；2nd, aviation plug；21st, the public mouth of aviation plug；22nd, aviation is inserted
The female mouth of head；23rd, aviation plug terminals；24th, the adjacent terminals of aviation plug；3rd, head end single line；4th, end single line.
Embodiment
The utility model embodiment discloses a kind of current transformer high current up-flow line, for solving up-flow cable winding
Step bothers time-consuming, can only wind several circles, the limited technical problem of multiplication factor.
Referring to Fig. 3, a kind of current transformer high current provided in the utility model embodiment flows up a reality of line
Applying example includes：A plurality of single line 1, aviation plug 2；
One public mouth binding post of the public mouth 21 of one end connection aviation plug of single line 1, the other end connection aviation of single line 1
One female mouth binding post of plug mother's mouth 22 so that a plurality of single line 1 is connected and forms closed loop from beginning to end by the aviation plug 2 of closure
Connection.
It should be noted that a plurality of single line of the utility model embodiment is connected on aviation plug, when aviation plug is closed
When conjunction, one end of a single line is connected by aviation plug with another single line, is formed between single line by aviation plug
Head and the tail are connected.
The utility model embodiment also includes head end single line 3, end single line 4, middle single line；
The first public mouth binding post of the public mouth 21 of one end connection aviation plug of head end single line 3, one end of end single line connects
Connect the female mouth binding post of tail of the female mouth 22 of aviation plug so that head end single line 3, middle single line, end single line 4 are sequentially connected shape
Into circuit pathways, now aviation plug 2 is closed.
The utility model embodiment also includes current transformer；
High current up-flow line passes through the interstitial hole of current transformer primary side, the non-terminals and boat of aviation plug public affairs mouth 21
The non-terminals connection of blind plug mother's mouth 22.
The utility model embodiment also includes current feedback circuit；
Current feedback circuit is connected with head end single line 3, end single line 4；
Current feedback circuit is streamed to up-flow line for producing electricity.
The utility model embodiment also includes protection device tester；
Protection device tester includes above-mentioned current feedback circuit, current detector；
Current detector connects the second siding ring of current transformer.
Above is flowing up one embodiment of line to a kind of current transformer high current that the utility model embodiment is provided
It is explained in detail, a kind of current transformer high current provided the utility model embodiment is flowed up into another of line below
Embodiment is explained in detail.
The utility model embodiment provides a kind of current transformer high current up-flow line, and up-flow line is made up of many single lines 1,
Single line 1 is connected to aviation plug 2, and one end of single line 1 is connected to the terminals of the female mouth 22 of aviation plug, and the other end of single line 1 connects
It is connected to the adjacent terminals of the public mouth 21 of plug.The list that the terminals head end or end of the male mouth 21 of aviation plug or female mouth 22 are connected
The end of line 1 one is connected to aviation plug, and the other end does not connect aviation plug.After the male mouth 21 of aviation plug is connected with female mouth 22, head end single line 3
Connected with remaining single line.
Thus, it is necessary to carry out during rising test staff can high current up-flow line through current transformer once
Side, the male mouth 21 of aviation plug is connected with female mouth 22, is then flowed into the head end of low current from up-flow line, from end outflow, is risen
Current transformer primary side is flowed through in all single line electric currents superposition of streamline, and current transformer primary side can be experienced big after superposition
Electric current, thus accurately, simply and quickly carry out rising test of current transformer.
On the basis of above-mentioned, the quantity of single line 1, the quantity of aviation plug terminals 23 can also be increased, more single lines are connected
1, expand superimposed current value, the electric current for flowing through current transformer primary side is bigger closer to rated current.
Above is flowing up another implementation of line to a kind of current transformer high current that the utility model embodiment is provided
Example is explained in detail, and a kind of current transformer high current provided the utility model embodiment is flowed up into the another of line below
Individual embodiment is explained in detail.
Referring to Fig. 4, the utility model embodiment provides a kind of current transformer high current up-flow line, including many single lines
1, aviation plug 2.First single line is referred to as head end single line 3, is connected to first terminals of aviation plug 2.Single line one end 11 connects
The aviation plug terminals 23 of the male mouth 21 (or the female mouth 22 of aviation plug) of aviation plug are connect, the connection aviation of the single line other end 12 is inserted
The adjacent terminals 24 of aviation plug of female mouth 22 (or male mouth 21 of aviation plug) of head.So by one end of same single line 1
It is connected the adjacent terminals 24 of the male mouth 21 of aviation plug and female mouth 22 respectively with the other end.Last last in aviation plug 2
Position connection end single line 4.So as to realize in the state of the male mouth 21 of aviation plug is connected with female mouth 22, head end single line 3 and end
Single line 4 is connected by the formation closed loop of aviation plug 2.
When flowing up line using high current, aviation plug 2 is passed through to the interstitial hole of current transformer primary side, then aviation is inserted
The male mouth 21 of head is connected with female mouth 22, and the input current I between head end single line 3 and end single line 4, the electric current of many single lines all flows through
The primary side of current transformer, as shown in Figure 5, the high current ∑ I after the formation superposition of current transformer primary side, by electricity
Current transformer second siding ring induces secondary current.High current ∑ I value is exactly the radical that input current I is multiplied by single line.
The low current I of high current ∑ I and secondary side sensing after being superimposed to primary side, you can calculate the no-load voltage ratio of current transformer.
Line is flowed up using high current, common protection device tester can be used to carry out up-flow examination to current transformer
Test.Without artificial winding cable repeatedly, current transformer primary side can be made to sense high current, to the up-flow school of current transformer
Test more accurate.Up-flow operation process need not carry bulky special strong current generator, mitigate the labor intensity of staff.
A kind of current transformer high current up-flow line provided by the utility model is described in detail above, for
Those of ordinary skill in the art, the thought of foundation the utility model embodiment, in specific embodiments and applications
It will change, in summary, this specification content should not be construed as to limitation of the present utility model.
Claims (5)
1. a kind of current transformer high current flows up line, it is characterised in that including：A plurality of single line, aviation plug；
One end of the single line connects a public mouth binding post of the public mouth of the aviation plug, and the other end of the single line connects
Connect a female mouth binding post of female mouth of the aviation plug so that the aviation plug that a plurality of single line passes through closure
Head and the tail connection forms closed loop connection.
2. current transformer high current according to claim 1 flows up line, it is characterised in that a plurality of single line includes head
Hold single line, end single line and middle single line；
One end of the head end single line connects the first public mouth binding post of the public mouth of the aviation plug, and the end is single
One end of line connects tail female mouth binding post of female mouth of the aviation plug so that the head end single line, it is described in
Between single line, the end single line be in turn connected to form circuit pathways.
3. current transformer high current according to claim 1 flows up line, it is characterised in that also including current transformer；
The high current up-flow line passes through the interstitial hole of the current transformer primary side, and the non-of public mouth of the aviation plug connects
The non-terminals connection of female mouth of line end and the aviation plug.
4. current transformer high current according to claim 2 flows up line, it is characterised in that also including current feedback circuit；
The current feedback circuit is connected with the head end single line, the end single line；
The current feedback circuit is streamed to the up-flow line for producing electricity.
5. current transformer high current according to claim 4 flows up line, it is characterised in that also verified including protection device
Instrument；
The protection device tester includes the current feedback circuit, current detector；
The current detector connects the second siding ring of current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621199053.1U CN206450817U (en) | 2016-11-07 | 2016-11-07 | A kind of current transformer high current flows up line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621199053.1U CN206450817U (en) | 2016-11-07 | 2016-11-07 | A kind of current transformer high current flows up line |
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| Publication Number | Publication Date |
|---|---|
| CN206450817U true CN206450817U (en) | 2017-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621199053.1U Active CN206450817U (en) | 2016-11-07 | 2016-11-07 | A kind of current transformer high current flows up line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181538A (en) * | 2018-03-14 | 2018-06-19 | 华北科技学院 | Intelligent short circuit experiment platform |
| CN108594154A (en) * | 2018-04-12 | 2018-09-28 | 广东电网有限责任公司 | A kind of binding clip of verification transformer station direct current system leakage current mutual inductor |
-
2016
- 2016-11-07 CN CN201621199053.1U patent/CN206450817U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181538A (en) * | 2018-03-14 | 2018-06-19 | 华北科技学院 | Intelligent short circuit experiment platform |
| CN108594154A (en) * | 2018-04-12 | 2018-09-28 | 广东电网有限责任公司 | A kind of binding clip of verification transformer station direct current system leakage current mutual inductor |
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