CN103219143A - Standard DC (Direct Current) component resisting mutual inductor - Google Patents
Standard DC (Direct Current) component resisting mutual inductor Download PDFInfo
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- CN103219143A CN103219143A CN 201310112106 CN201310112106A CN103219143A CN 103219143 A CN103219143 A CN 103219143A CN 201310112106 CN201310112106 CN 201310112106 CN 201310112106 A CN201310112106 A CN 201310112106A CN 103219143 A CN103219143 A CN 103219143A
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- magnetic core
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- mutual inductor
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- amorphous magnetic
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Abstract
The invention discloses a standard DC (Direct Current) component resisting mutual inductor. The standard DC component resisting mutual inductor comprises a magnetic core main body, a copper wire and leading wires, wherein the copper wire is wound on the magnetic core main body, the leading wires are arranged at two ends of the copper wire, the magnetic core main body comprises an annular amorphous magnetic core, an outer shell which is arranged on the annular amorphous magnetic core and an inner shell, encapsulation adhesive layers are arranged between the annular amorphous magnetic core and the outer shell as well as the annular amorphous magnetic core and the inner shell, the functions of damp prevention, dust prevention, corrosion prevention and shock resistance of the encapsulation adhesive layers are increased, and the using performance and the steadiness parameters are increased. According to the standard DC component resisting mutual inductor disclosed by the invention in the structure, a DC component resisting mutual inductor can be detected online by matching with a detector, and the structure is simple and light.
Description
Technical field
The anti-DC component instrument transformer of the standard that the present invention relates to.
Background technology
The current transformer principle is according to electromagnetic induction principle.Current transformer is made up of the iron core and the winding of closure.Its umber of turn seldom; string is in the circuit of the electric current that needs are measured; therefore it often has whole electric currents of circuit to flow through; the secondary winding turn ratio is more; be serially connected in measuring instrument and the protection loop, current transformer is when work, and its 2 minor loops are closed all the time; therefore the impedance of measuring instrument and protection loop series coil is very little, and the operating state of current transformer is near short circuit.In the time of short circuit, contain the aperiodic component and the periodic component of decay in the short circuit current, aperiodic component is exactly a DC component.Because the application of reclosing is many in the present protection, in the time of reclosing,, will makes twice DC component stack, and make the current transformer iron core saturated if short circuit still exists.Also do not have the anti-DC component instrument transformer of standard at present, can't detect, can only carry out error testing by the ammeter complete machine, because whole table is through revising, so test parameter has error and efficient not high by correction platform to instrument transformer.
Summary of the invention
Deficiency at prior art exists the object of the present invention is to provide the anti-DC component instrument transformer of standard, cooperates the detector can the anti-DC component instrument transformer of online detection, and is simple and light.
For achieving the above object, the invention provides following technical scheme: the anti-DC component instrument transformer of standard, comprise the magnetic core main body, be wound on copper cash on the magnetic core main body, be located at the lead-in wire at copper cash two ends, described magnetic core main body comprises the ring-type amorphous magnetic core, is located at shell and inner casing on the ring-type amorphous magnetic core, be equipped with the embedding glue-line between described ring-type amorphous magnetic core and shell and the inner casing, this structure increases the embedding glue-line can be moistureproof, dustproof, anticorrosion, shockproof effect, and improve serviceability and steadiness parameter.
As preferably, described ring-type amorphous magnetic core is made by constant permeability magnetic material, and performance is good, working stability.
Beneficial effect:
The present invention adopts technique scheme to provide a kind of, cooperates the detector can the anti-DC component instrument transformer of online detection, and is simple and light.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
The present invention will be further described with reference to Fig. 1.
As shown in Figure 1, the anti-DC component instrument transformer of standard, comprise magnetic core main body 1, be wound on copper cash 2 on the magnetic core main body 1, be located at the lead-in wire 3 at copper cash 2 two ends, described magnetic core main body 1 comprises ring-type amorphous magnetic core 11, is located at shell 12 and inner casing 13 on the ring-type amorphous magnetic core 11, be equipped with embedding glue-line 4 between described ring-type amorphous magnetic core 11 and shell 12 and the inner casing 13, increasing the embedding glue-line can be moistureproof, dustproof, anticorrosion, shockproof effect, and improves serviceability and steadiness parameter.Described ring-type amorphous magnetic core 11 is made by constant permeability magnetic material, performance is good, working stability, 11 coilings of ring-type amorphous magnetic core are adopted thick line to carry out internal resistance and are remedied, waveform is carried out relatively with oscilloscope in the coiling back, ratio adopts the number of turn to remedy, ERROR CONTROL is in 0.1%, and copper cash 2 carries out coiling according to number of turn difference.The present invention adopts technique scheme to provide standard anti-DC component instrument transformer, cooperates the detector can the anti-DC component instrument transformer of online detection, and is simple and light.
Operation principle of the present invention is to utilize the permanent permeance of 1K101 material amorphous magnetic core, permeability is invariable in wide-range current, guaranteed the error unanimity of instrument transformer in the working range, test out the error of instrument transformer then by correction platform, by coiling error is remedied again, concrete operations are as follows: turn on the power switch earlier, errors table should be 00.0% on the display screen, and the standard mutual inductor terminal of detector is connected corresponding standard mutual inductor case terminal; The 60A2000Ts to-be-tested transformer is placed on the detector, then elementary copper rod is passed magnetic core, magnetic core coil termination line clips with the detection chuck; Regulate elementary adjustable transformer, input current is transferred to rated operational current; Ratio video data on the display screen according to standard, whether qualifiedly carries out sorting.If instrument transformer to be detected is 100A2500Ts, the 100A2500Ts port of standard mutual inductor input termination standard mutual inductor input.
Claims (2)
1. the anti-DC component instrument transformer of standard, comprise magnetic core main body (1), be wound on copper cash (2) on the magnetic core main body (1), be located at the lead-in wire (3) at copper cash (2) two ends, it is characterized in that: described magnetic core main body (1) comprises ring-type amorphous magnetic core (11), is located at shell (12) and inner casing (13) on the ring-type amorphous magnetic core (11), is equipped with embedding glue-line (4) between described ring-type amorphous magnetic core (11) and shell (12) and the inner casing (13).
2. the anti-DC component instrument transformer of standard according to claim 1 is characterized in that: described ring-type amorphous magnetic core (11) is made by constant permeability magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310112106 CN103219143A (en) | 2013-04-01 | 2013-04-01 | Standard DC (Direct Current) component resisting mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310112106 CN103219143A (en) | 2013-04-01 | 2013-04-01 | Standard DC (Direct Current) component resisting mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103219143A true CN103219143A (en) | 2013-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310112106 Pending CN103219143A (en) | 2013-04-01 | 2013-04-01 | Standard DC (Direct Current) component resisting mutual inductor |
Country Status (1)
| Country | Link |
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| CN (1) | CN103219143A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109817429A (en) * | 2019-03-01 | 2019-05-28 | 石家庄科林电气股份有限公司 | A kind of current mutual inductor coil coiling template and method for winding |
-
2013
- 2013-04-01 CN CN 201310112106 patent/CN103219143A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109817429A (en) * | 2019-03-01 | 2019-05-28 | 石家庄科林电气股份有限公司 | A kind of current mutual inductor coil coiling template and method for winding |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130724 |