CN206531948U - Simple current transformer and secondary circuit polarity calibration equipment - Google Patents
Simple current transformer and secondary circuit polarity calibration equipment Download PDFInfo
- Publication number
- CN206531948U CN206531948U CN201720186914.0U CN201720186914U CN206531948U CN 206531948 U CN206531948 U CN 206531948U CN 201720186914 U CN201720186914 U CN 201720186914U CN 206531948 U CN206531948 U CN 206531948U
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- battery
- current transformer
- positive terminal
- secondary circuit
- calibration equipment
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- 229910018095 Ni-MH Inorganic materials 0.000 claims abstract description 16
- 229910018477 Ni—MH Inorganic materials 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000002253 acid Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Tests Of Electric Status Of Batteries (AREA)
Abstract
The utility model provides a kind of simple current transformer and secondary circuit polarity calibration equipment, and it includes battery case and gauge outfit；The battery case includes battery box and charging plug, and the battery box is internally provided with rechargeable battery groove and transformer module；The charging plug connects the battery box by the transformer module；The battery box interior side fixes the positive terminal L11 and negative terminal L12 of promising battery case voltage output；Some Ni-MH batteries are provided with the rechargeable battery groove, are connected in parallel on after each Ni-MH battery series connection between positive terminal L11 and negative terminal L12；The gauge outfit uses double reading milliammeter, described two ranges of top-of-form set, and sets the positive terminal K11 and positive terminal K12 of negative terminal K22 and each range of correspondence.Simple current transformer and secondary circuit the polarity calibration equipment is simple in construction, easy to use, has broad application prospects.
Description
Technical field
The utility model is related to field of electrical equipment, and in particular to a kind of simple current transformer and secondary circuit polarity school
Experiment device.
Background technology
Current transformer is the power equipment commonly used in power system, and critical role, usual electricity consumption are accounted in power system
High current is converted into low current by current transformer, and is surveyed using the appropriate meter of the no-load voltage ratio relation configuration of current transformer
Amount, is widely used in terms of the relay protection of power system, electric energy metrical, distant place observing and controlling, system failure recording.Current Mutual Inductance
Device winding and lead polarity wiring error, need to be modified in time, otherwise can cause measuring error, protection device tripping or malfunction
Etc. hidden danger.Therefore, by rated current transformer before and after handing-over and overhaul, polarity test is carried out, current transformer is examined and draws
The correctness of line polarity, is the essential working procedure of relay protection staff.
Judging the method for current transformer and lead polarity has three kinds, respectively direct current method, alternating current method, instrumental method.Wherein
Most convenient, it is most practical be direct current method, but the measuring accuracy of existing direct current method polarity tester is not high, and battery discharge speed
Degree is too fast, for the test of multiple mutual inductor polarities, the fully charged test that much can not meet experiment of single, it is therefore desirable to repeatedly
Charging, it is time-consuming oversize, extend the duration of a project.Meanwhile, traditional current transformer polarity calibration equipment, volume is big, relatively more stupid
Weight, at the heavy scene of capital construction, operation and transport inconvenience.
Utility model content
The purpose of this utility model is in view of the shortcomings of the prior art, so as to provide a kind of testing precision height, user
Just simple current transformer and secondary circuit polarity calibration equipment.
To achieve these goals, the technical scheme that the utility model is used is：
A kind of simple current transformer and secondary circuit polarity calibration equipment, including battery case and gauge outfit；
The battery case includes battery box and charging plug, and the battery box is internally provided with rechargeable battery groove and change
Depressor module；The charging plug connects the battery box by the transformer module, for being filled for the battery box
Electricity；
The battery box interior side fixes the positive terminal L11 and negative terminal of promising battery case voltage output
L12, the positive terminal L11 and the negative terminal L12 afterbody are respectively arranged with positive pole jack and negative pole jack, institute
State battery box and correspond to the positive pole jack and the positive pole jack perforate respectively；
Some Ni-MH batteries are provided with the rechargeable battery groove, positive terminal is connected in parallel on after each Ni-MH battery series connection
Between L11 and negative terminal L12；
The gauge outfit uses double reading milliammeter, described two ranges of top-of-form set, and sets negative terminal K22 and right
Answer the positive terminal K11 and positive terminal K12 of each range.
Based on above-mentioned, the Ni-MH battery is No. 1 battery, and voltage is 1.2 V, and capacity is 10 Ah.
Based on above-mentioned, provided with four pieces of Ni-MH batteries in the rechargeable battery groove.
The utility model compared with the prior art have substantive distinguishing features and progress, specifically, the utility model have with
Lower advantage：
Simple current transformer and secondary circuit polarity calibration equipment described in the utility model include battery case and gauge outfit,
The battery case and the gauge outfit are in split-type design, therefore, simple current transformer and secondary circuit polarity the verification dress
The polarity test that can be not only used for current transformer is put, its polarity for protecting cabinet lead can also be tested.In the battery case
Ni-MH battery is provided with as power supply, relative to traditional lead-acid battery, electric spark is no longer produced during point-polarity, battery is reduced
The loss of capacity, is greatly reduced potential safety hazard.The gauge outfit uses double reading milliammeter, and polarity connection can be avoided to cause mistake on the contrary
Sentence, described two ranges of top-of-form set, when battery capacity is sufficient, produced electric current is larger during point-polarity, and deflection amplitude is also big,
From wide range, it is to avoid deflection amplitude is excessive and the pointer that bends；When battery capacity is insufficient to allow wide range ammeter deflection amplitude bright
When aobvious visible, small-range is selected, to make full use of battery.
Brief description of the drawings
Fig. 1 is the structural representation of simple current transformer and secondary circuit polarity calibration equipment in the utility model.
Fig. 2 is the internal structure schematic diagram of battery case described in the utility model.
Fig. 3 is that the use principle of simple current transformer and secondary circuit polarity calibration equipment described in the utility model is shown
It is intended to.
In figure：1. battery case；11. positive pole jack；12. negative pole jack；13. charging plug；14. Ni-MH battery；15.
Transformer module；16. rechargeable battery groove；2. gauge outfit；3. current transformer；4. second protection cabinet.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
As shown in Figure 1 and Figure 2, a kind of simple current transformer and secondary circuit polarity calibration equipment, including the He of battery case 1
Gauge outfit 2；The battery case 1 includes battery box and charging plug 13, and the battery case 1 and the gauge outfit 2 are in split-type design,
Therefore, simple current transformer and secondary circuit the polarity calibration equipment can be not only used for the polarity survey of current transformer
Examination, can also test its polarity for protecting cabinet lead；The battery box is internally provided with rechargeable battery groove 16 and transformer mould
Block 15；The charging plug 13 connects the battery box by the transformer module 15, for being filled for the battery box
Electricity.
The battery box interior side fixes the positive terminal L11 and negative terminal of promising battery case voltage output
L12, the positive terminal L11 and the negative terminal L12 afterbody are respectively arranged with positive pole jack 11 and negative pole jack
12, the battery box corresponds to the positive pole jack 11 and the perforate of negative pole jack 12 respectively.
Provided with four pieces of Ni-MH batteries 14 in the rechargeable battery groove 16, the Ni-MH battery 14 is No. 1 battery, and voltage is
1.2 V, capacity is 10 Ah；Each Ni-MH battery 14 be connected in parallel on after connecting positive terminal L11 and negative terminal L12 it
Between；Using the Ni-MH battery 14 as power supply, relative to traditional lead-acid battery, electric spark is no longer produced during point-polarity, is subtracted
The small loss of battery capacity, is greatly reduced potential safety hazard.
The gauge outfit 2 uses double reading milliammeter, and polarity connection can be avoided to cause erroneous judgement on the contrary, and the gauge outfit 2 sets two
Range, and the positive terminal K11 and positive terminal K12 of negative terminal K22 and each range of correspondence are set.Battery holds
When amount is sufficient, produced electric current is larger during point-polarity, and deflection amplitude is also big, from wide range, it is to avoid deflection amplitude it is excessive and
Bend pointer；When battery capacity is insufficient to allow wide range ammeter deflection amplitude clearly visible, small-range is selected, so as to fully sharp
Use battery.
The use principle of simple current transformer and secondary circuit the polarity calibration equipment is as shown in figure 3, in use, institute
State primary side L1 and L2 the terminal phase of the positive terminal L11 and negative terminal L12 of battery case 1 respectively with current transformer 3
Connection, the outlet side of second protection cabinet 4 is connected with the gauge outfit 2, after energization, and the primary side of current transformer 3 instantaneously pressurizes, and looks into
The throw of pointer situation of the gauge outfit 2 is seen, pointer positive deflection is then same polarity, illustrates that wiring is correct, reverse-biased is then reversed polarity,
Illustrate wiring error；When only testing current transformer 3 itself, K11, K22 points of the positive and negative electrode binding post of the gauge outfit 2
It is not connected with secondary side K1, K2 terminal of current transformer.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：Still embodiment of the present utility model can be modified or some technical characteristics are equally replaced
Change；Without departing from the spirit of technical solutions of the utility model, it all should cover in the claimed technical scheme of the utility model
Among scope.
Claims (3)
1. a kind of simple current transformer and secondary circuit polarity calibration equipment, it is characterised in that：It includes battery case and gauge outfit；
The battery case includes battery box and charging plug, and the battery box is internally provided with rechargeable battery groove and transformer
Module；The charging plug connects the battery box by the transformer module, for being charged for the battery box；
The battery box interior side fixes the positive terminal L11 and negative terminal L12 of promising battery case voltage output,
The positive terminal L11 and the negative terminal L12 afterbody are respectively arranged with positive pole jack and negative pole jack, the electricity
Pond box body corresponds to the positive pole jack and the positive pole jack perforate respectively；
Some Ni-MH batteries are provided with the rechargeable battery groove, positive terminal L11 is connected in parallel on after each Ni-MH battery series connection
Between negative terminal L12；
The gauge outfit uses double reading milliammeter, described two ranges of top-of-form set, and sets negative terminal K22 and correspondingly every
The positive terminal K11 and positive terminal K12 of individual range.
2. simple current transformer according to claim 1 and secondary circuit polarity calibration equipment, it is characterised in that：It is described
Ni-MH battery is No. 1 battery, and voltage is 1.2 V, and capacity is 10 Ah.
3. simple current transformer according to claim 1 or 2 and secondary circuit polarity calibration equipment, it is characterised in that：
Provided with four pieces of Ni-MH batteries in the rechargeable battery groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720186914.0U CN206531948U (en) | 2017-02-28 | 2017-02-28 | Simple current transformer and secondary circuit polarity calibration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720186914.0U CN206531948U (en) | 2017-02-28 | 2017-02-28 | Simple current transformer and secondary circuit polarity calibration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206531948U true CN206531948U (en) | 2017-09-29 |
Family
ID=59915050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720186914.0U Active CN206531948U (en) | 2017-02-28 | 2017-02-28 | Simple current transformer and secondary circuit polarity calibration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206531948U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413657A (en) * | 2020-04-13 | 2020-07-14 | 西安热工研究院有限公司 | CT body secondary circuit calibration method |
-
2017
- 2017-02-28 CN CN201720186914.0U patent/CN206531948U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413657A (en) * | 2020-04-13 | 2020-07-14 | 西安热工研究院有限公司 | CT body secondary circuit calibration method |
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