CN214669548U - Polarity testing device for current transformer - Google Patents
Polarity testing device for current transformer Download PDFInfo
- Publication number
- CN214669548U CN214669548U CN202120534932.XU CN202120534932U CN214669548U CN 214669548 U CN214669548 U CN 214669548U CN 202120534932 U CN202120534932 U CN 202120534932U CN 214669548 U CN214669548 U CN 214669548U
- Authority
- CN
- China
- Prior art keywords
- current transformer
- testing
- polarity
- power supply
- emitting diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 description 10
- 239000012212 insulator Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model relates to a transformer substation equipment test technical field is a current transformer polarity testing arrangement, and it includes testing arrangement and test termination, the testing arrangement includes adjustable DC power supply, current transformer, resistance and double-colored emitting diode, and adjustable DC power supply connects in parallel at the current transformer primary side, and resistance connects in parallel at the current transformer secondary side, and double-colored emitting diode connects in parallel at the both ends of resistance; the testing wiring device comprises two testing wiring components which are respectively connected with two ends of the primary side of the current transformer. The utility model discloses utilize bicolor emitting diode L's characteristics, judge polarity through bicolor emitting diode L's colour, compare in the mode that polarity was judged to the artifical direction of deflection of observation ampere meter pointer of tradition, the degree of accuracy is high, more directly perceived, when having solved the use ampere meter, long-time operation caused the ampere meter precision step-down, the problem of error appears, has avoided the problem of artificial judgement error.
Description
Technical Field
The utility model relates to a substation equipment tests technical field, is a current transformer polarity testing arrangement.
Background
In the field operation process, the polarity test of the current transformer is needed before the newly built and expanded transformer substation is put into operation, the test method mainly adopted in the current operation and maintenance work is a direct current method, and the direct current method has the characteristics that the method for measuring the polarity of the current transformer is simple, the operation is easy, and the result is accurate. However, there are problems in the operation as follows: 1. the dry battery and the pointer type universal meter need to be carried respectively, are connected respectively, and need to be lifted up to hang a test wire, so that the operation is complex and the carrying is inconvenient; 2. multiple groups of tests are generally required in the field test process, and errors are likely to occur in the reading of the deflection indication condition of the pointer type multimeter along with the continuous extension of the operation time, so that artificial test errors are caused, and the safety of a power grid is influenced; 3. two persons are needed to complete the field test process, and the test efficiency is not high.
Disclosure of Invention
The utility model provides a current transformer polarity testing arrangement has overcome above-mentioned prior art not enough, and it can effectively solve and has now easily appear error, the easy problem of judging the error by the people through long-time operation that pointer multimeter carries out current transformer polarity test existence.
The technical scheme of the utility model is realized through following measure: a polarity testing device for a current transformer comprises a testing device and a testing wiring device, wherein the testing device comprises an adjustable direct current power supply, the current transformer, a resistor and a bicolor light-emitting diode; the testing wiring device comprises two testing wiring components which are respectively connected with two ends of the primary side of the current transformer.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the testing device can further comprise an insulating shell, wherein the insulating shell is provided with two testing wiring holes, two output wiring holes and an adjusting handle for adjusting the output voltage of the adjustable direct-current power supply, the double-color light-emitting diode, the ammeter and the starting switch are all arranged on the insulating shell, the adjustable direct-current power supply, the current transformer and the resistor are all arranged inside the insulating shell, the two testing wiring holes are respectively connected with the primary side of the current transformer, and the two output wiring holes are respectively connected with the secondary side of the current transformer.
The testing wiring assembly can comprise a conductive hanging wire hook, a conductive connecting pipe, an insulating rod and a wire, wherein a wire inserting groove with a leftward opening is formed in the left side of the upper portion of the conductive connecting pipe; plugs are respectively arranged at two ends of the wire, the plug at one end of the wire is inserted into the wire inserting groove, and the plug at the other end of the wire is inserted into the testing wiring hole.
The adjustable direct current power supply can be a 15V adjustable direct current power supply.
The utility model has simple structure, simple operation and convenient carrying; the principle of testing the polarity of the current transformer by using a direct current method and the characteristics of the double-color light-emitting diode are utilized, the polarity is judged by the color of the double-color light-emitting diode L, compared with the traditional mode of manually observing the deflection direction of the pointer of the ammeter to judge the polarity, the accuracy is high, the method is more intuitive, the problems that the precision of the ammeter is lowered and errors occur due to long-time operation when the ammeter is used are solved, and the problem of manual judgment errors is avoided; simultaneously the utility model discloses improve test termination, add and established electrically conductive hanging wire and collude, electrically conductive connecting pipe, insulator spindle, removed the link of personnel's operation of ascending a height from, improved the security of operation, saved test time.
Drawings
Fig. 1 is a schematic circuit diagram of the testing apparatus according to the preferred embodiment of the present invention.
Fig. 2 is a schematic structural view of the testing device according to the preferred embodiment of the present invention.
Fig. 3 is a schematic structural view of the testing wiring assembly according to the preferred embodiment of the present invention.
Fig. 4 is a wiring diagram of the best embodiment of the present invention for detecting the usage status.
The codes in the figures are respectively: p1 and P2 are testing wiring holes, S1 and S2 are output wiring holes, L is a two-color light-emitting diode, U is an adjustable direct-current power supply, CT is a current transformer, R is a resistor, 1 is an insulating shell, 2 is an adjusting handle, 3 is a conductive hanging wire hook, 4 is a conductive connecting pipe, 5 is an insulating rod, and 6 is a wire inserting groove.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention will be further described with reference to the following examples and drawings:
as shown in fig. 1, 2 and 4, the polarity testing device of the current transformer comprises a testing device and a testing wiring device, wherein the testing device comprises an adjustable direct current power supply U, a current transformer CT, a resistor R and a bicolor light-emitting diode L, the adjustable direct current power supply U is connected in parallel with a primary side of the current transformer CT, the resistor R is connected in parallel with a secondary side of the current transformer CT, and the bicolor light-emitting diode L is connected in parallel with two ends of the resistor R; the testing wiring device comprises two testing wiring components which are respectively connected with two ends of the primary side of the current transformer CT.
The adjustable direct current power supply U is a known technology in the prior art, and can adjust output voltage so as to meet the actual test requirement. The above-mentioned dual-color led L is a well-known technology, and emits lights of different colors when the current direction passing through the dual-color led L is different. The testing wiring device is used for connecting a tested current transformer with the testing device and comprises two testing wiring components, and the two testing wiring components are respectively connected with two ends of the primary side of the current transformer CT.
For example, the double-color led L can emit red and green light, and then the specific process of the present invention is as follows:
firstly, one end of each of the two testing wiring components in the utility model is respectively connected with the two ends of the primary side of the current transformer CT, and the other ends of the two testing wiring components are respectively connected with the primary side and the secondary side of the tested current transformer during working, thereby connecting the utility model with the tested current transformer;
secondly, with two terminals of the circuit breaker terminal incasement of transformer substation respectively with the utility model discloses the both ends of well current transformer CT secondary side are connected.
Finally, observing the bicolor light-emitting diode L to judge whether the tested current transformer is in an additive polarity state or a subtractive polarity state, namely if the bicolor light-emitting diode L emits red light, indicating that the current is input from the primary side 1 end, output from the primary side 2 end, input from the secondary side 1 end and output from the secondary side 2 end of the current transformer CT in the testing device, judging that the tested current transformer is in an additive polarity state; if the bicolor light emitting diode L emits green light, which indicates that the current is output from the primary side 1 input end, the primary side 2 output end, the secondary side 2 input end and the secondary side 1 output end of the current transformer CT in the testing device, the tested current transformer is judged to be under-polarized.
The utility model has simple structure, simple operation and convenient carrying; the principle of utilizing the direct current method to test current transformer polarity utilizes the characteristics of double-colored emitting diode L, judges polarity through double-colored emitting diode L's colour, compares in the mode of the artifical direction judgement polarity of observing the ampere meter pointer deflection of tradition, and the degree of accuracy is high, more directly perceived, when having solved the use ampere meter, long-time operation causes the ampere meter precision step-down, the problem of error appears, has avoided the problem of artificial judgement error.
The polarity testing device of the current transformer can be further optimized or/and improved according to actual needs:
as shown in fig. 1, 2 and 4, the testing device further includes an insulating housing 1, the insulating housing 1 is provided with two testing wiring holes (P1 and P2), two output wiring holes (S1 and S2), and an adjusting handle 2 for adjusting the output voltage of the adjustable dc power supply U, the two-color light emitting diode L, the ammeter a and the start switch K are all disposed on the insulating housing 1, the adjustable dc power supply U, the current transformer CT and the resistor R are all disposed inside the insulating housing 1, the two testing wiring holes (P1 and P2) are respectively connected with the primary side of the current transformer CT, and the two output wiring holes (S1 and S2) are respectively connected with the secondary side of the current transformer CT.
The arrangement of the insulating shell 1 increases the portability of the testing device.
As shown in fig. 3 and 4, the testing wiring assembly comprises a conductive hanging wire hook 3, a conductive connecting pipe 4, an insulating rod 5 and a wire, wherein a wiring slot 6 with a leftward opening is formed in the left side of the upper part of the conductive connecting pipe 4, the bottom end of the conductive hanging wire hook 3 is fixedly installed together with the right end of the wiring slot 6, and the bottom end of the conductive connecting pipe 4 is installed together with the top end of the insulating rod 5; plugs are respectively arranged at two ends of the lead, the plug at one end of the lead is inserted into the plug wire slot 6, and the plug at the other end of the lead is inserted into the testing wiring hole (P1, P2).
The utility model discloses well two test wiring subassemblies's structure is identical. The conductive hanging wire hook 3 is convenient to connect with a tested current transformer. The bottom of above-mentioned electrically conductive connecting pipe 4 is in the same place with the top accessible screw thread installation of insulator spindle 5, and insulator spindle 5 can be retractable insulator spindle to the staff need not the operation of ascending a height, just can be connected test wiring subassembly and testing arrangement. The left side of the upper part of the conductive connecting pipe 4 is provided with a wire inserting groove 6 with a leftward opening, and two ends of the wire are respectively provided with a plug so as to facilitate the connection of the wire with the conductive hanging wire hook 3 and the testing device.
The adjustable direct current power supply U is a 15V adjustable direct current power supply according to requirements.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
Claims (4)
1. A polarity testing device of a current transformer is characterized by comprising a testing device and a testing wiring device, wherein the testing device comprises an adjustable direct current power supply, the current transformer, a resistor and a bicolor light-emitting diode; the testing wiring device comprises two testing wiring components which are respectively connected with two ends of the primary side of the current transformer.
2. The polarity testing device of claim 1, further comprising an insulating housing, wherein the insulating housing is provided with two testing wiring holes, two output wiring holes, and an adjusting handle for adjusting the output voltage of the adjustable dc power supply, the two-color led, the current meter, and the start switch are all disposed on the insulating housing, the adjustable dc power supply, the current transformer, and the resistor are all disposed inside the insulating housing, the two testing wiring holes are respectively connected to the primary side of the current transformer, and the two output wiring holes are respectively connected to the secondary side of the current transformer.
3. The polarity testing device of the current transformer according to claim 2, wherein the testing wiring assembly comprises a conductive hanging wire hook, a conductive connecting pipe, an insulating rod and a wire, wherein a slot with a leftward opening is formed in the left side of the upper portion of the conductive connecting pipe, the bottom end of the conductive hanging wire hook is fixedly installed with the right end of the slot, and the bottom end of the conductive connecting pipe is installed with the top end of the insulating rod; plugs are respectively arranged at two ends of the wire, the plug at one end of the wire is inserted into the wire inserting groove, and the plug at the other end of the wire is inserted into the testing wiring hole.
4. The current transformer polarity testing device of claim 1, 2 or 3, wherein the adjustable DC power supply is a 15V adjustable DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120534932.XU CN214669548U (en) | 2021-03-15 | 2021-03-15 | Polarity testing device for current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120534932.XU CN214669548U (en) | 2021-03-15 | 2021-03-15 | Polarity testing device for current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214669548U true CN214669548U (en) | 2021-11-09 |
Family
ID=78453230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120534932.XU Active CN214669548U (en) | 2021-03-15 | 2021-03-15 | Polarity testing device for current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214669548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946555A (en) * | 2021-03-15 | 2021-06-11 | 国网新疆电力有限公司巴州供电公司 | Current transformer polarity test system based on dual display |
-
2021
- 2021-03-15 CN CN202120534932.XU patent/CN214669548U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946555A (en) * | 2021-03-15 | 2021-06-11 | 国网新疆电力有限公司巴州供电公司 | Current transformer polarity test system based on dual display |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20090212964A1 (en) | Electrical Test Apparatus | |
| CN203838286U (en) | Current transformer polarity tester | |
| CN214669548U (en) | Polarity testing device for current transformer | |
| CN2388607Y (en) | Cable tester | |
| CN111308165A (en) | Electricity testing operation rod | |
| CN112946555A (en) | Current transformer polarity test system based on dual display | |
| CN205427089U (en) | Cable switches on insulation test device | |
| CN112782444A (en) | Junction box for replacing electric energy meter in live mode | |
| CN208207120U (en) | Aviation plug detection device | |
| CN218585226U (en) | Shelter power station switch board detection device | |
| CN210347884U (en) | DC power supply simulation grounding test device | |
| CN209590076U (en) | A kind of High-voltage measuring box pressure test ground connection combination row | |
| CN201289915Y (en) | Secondary circuit pressure-drop measuring access kit of voltage transformator | |
| CN201583577U (en) | Universal meter capable of testing twisted pairs | |
| CN211826149U (en) | Test platform for train equipment power supply device | |
| CN211206609U (en) | Non-contact voltage detection device and plug-in structure of non-contact voltage detection device and socket | |
| CN211478513U (en) | Cable fault rapid detection device | |
| CN219695409U (en) | Aviation plug measuring device, circuit and motor train unit aviation plug measuring assembly | |
| CN220525903U (en) | Seeker interface voltage measurement control device | |
| CN204758739U (en) | Direct current return circuit error detection ware | |
| CN219997189U (en) | Portable simple cable nuclear phase meter | |
| CN208795814U (en) | A kind of Novel electric area network safety detector | |
| CN215340107U (en) | Secondary equipment switching value intelligence thing allies oneself with testing arrangement | |
| CN218213363U (en) | Sequence flash lamp fault detection device | |
| CN210013090U (en) | Quick detection device of paver automatic leveling line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |