CN203324417U - Turn-to-turn short circuit tester of distribution transformer coil - Google Patents
Turn-to-turn short circuit tester of distribution transformer coil Download PDFInfo
- Publication number
- CN203324417U CN203324417U CN2013202792561U CN201320279256U CN203324417U CN 203324417 U CN203324417 U CN 203324417U CN 2013202792561 U CN2013202792561 U CN 2013202792561U CN 201320279256 U CN201320279256 U CN 201320279256U CN 203324417 U CN203324417 U CN 203324417U
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- circuit
- turn
- oscillator
- perception
- short circuit
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Abstract
The utility model discloses a turn-to-turn short circuit tester of a distribution transformer coil. The turn-to-turn short circuit tester of the distribution transformer coil comprises a perception oscillator, a coupling circuit, a normal indicating circuit and an alarm circuit. The perception oscillator is used to perceive whether a turn-to-turn short circuit occurs in the transformer coil, and an oscillation signal of the perception oscillator is sent to the coupling circuit; the output end of the coupling circuit is connected with the normal indicating circuit, and an oscillation stop signal of the perception oscillator is sent to the alarm circuit, so that the transformer coil can be tested conveniently, and an alarm is given out immediately to prompt the staff when the short circuit occurs, and accordingly, faults can be found and processed as early as possible.
Description
Technical field
The utility model relates to the substation transformer field, relates in particular to a kind of distribution transformer coils turn-to-turn short circuit tester.
Background technology
At present, in vast power transmission and distribution electrical network, substation transformer distributes as important power supply point equipment, is applied in widely city, and rural area, undertake the need for electricity important task of supplying broad masses of the people.Once substation transformer breaks down, the masses' productive life on every side will be had a strong impact on, and substation transformer breaks down, ascertain the reason rapidly, taking corresponding measure is the most important condition of handling failure, but the transformer coil turn-to-turn has short circuit, fault is difficult for being found at the scene, therefore need to a kind ofly can test the device that the transformer coil turn-to-turn has short circuit.
The utility model content
The purpose of this utility model is to provide a kind of distribution transformer coils turn-to-turn short circuit tester, can test place transformer coil turn-to-turn short circuit situation, and send alerting signal.
The utility model adopts following technical proposals: a kind of distribution transformer coils turn-to-turn short circuit tester, comprise perception oscillator, coupled circuit, normal indicating circuit, warning circuit, described perception oscillator is used for the whether short circuit of perception transformer coil turn-to-turn, the oscillator signal of perception oscillator sends to coupled circuit, the output terminal of coupled circuit connects normal indicating circuit, and the failure of oscillation signal of described perception oscillator sends to warning circuit.
Described coupled circuit includes electric capacity, the first diode and the second diode, the first transistor amplifier and the second transistor amplifier, described electric capacity one end connects the oscillator signal output terminal of perception oscillator, the electric capacity other end connects the second diode cathode and the first diode cathode, the first diode cathode ground connection, the second diode cathode connects the first transistor base, the first transistor base also is connected with the first resistance, the first transistor emitter ground connection, collector connects the 12V power supply by the second resistance, collector connects the base stage of the second triode by the 3rd resistance, the emitter of the second triode connects the 12V power supply, collector connects ground connection after normal indicating circuit.
Described normal indicating circuit consists of green LED and the 4th resistance of series connection.
Described warning circuit comprises loudspeaker warning circuit and red light emitting diodes warning circuit.
The utility model discloses a kind of simple, practical coils short circuit tester, can be tested transformer coil easily, report to the police immediately when having short-circuit conditions to occur to the staff with prompting, find that early fault is processed.The utility model measuring accuracy is high and can carry out sound, the same alarm of light, and practicality is very strong.
The accompanying drawing explanation
Fig. 1 is principle schematic of the present utility model;
The schematic diagram that Fig. 2 is coupled circuit of the present utility model and normal indicating circuit.
Embodiment
As shown in Figure 1, a kind of distribution transformer coils turn-to-turn short circuit of the utility model tester, comprise perception oscillator, coupled circuit, normal indicating circuit, warning circuit, described perception oscillator is used for the whether short circuit of perception transformer coil turn-to-turn, the oscillator signal of perception oscillator sends to coupled circuit, the output terminal of coupled circuit connects normal indicating circuit, and the failure of oscillation signal of described perception oscillator sends to warning circuit.Described warning circuit comprises loudspeaker warning circuit and red light emitting diodes warning circuit.
As shown in Figure 2, described coupled circuit includes capacitor C 1, the first diode D1 and the second diode D2, the first transistor amplifier and the second transistor amplifier, described capacitor C 1 one ends connect the oscillator signal output terminal of perception oscillator, capacitor C 1 other end connects the negative pole of the second diode D2 positive pole and the first diode D1, the plus earth of the first diode D1, the negative pole of the second diode D2 connects the first triode Q1 base stage, the first triode Q1 base stage also is connected with the first resistance R 1, the first triode Q 1 grounded emitter, collector connects the 12V power supply by the second resistance R 2, collector also connects the rear ground connection of capacitor C 2, collector also connects the base stage of the second triode Q2 by the 3rd resistance R 3, the emitter of the second triode Q2 connects the 12V power supply, collector connects ground connection after normal indicating circuit.Described normal indicating circuit consists of green LED L1 and the 4th resistance R 4 of series connection.
As shown in Figure 1 and Figure 2, the utility model comes magnetic test coil whether the turn-to-turn short circuit situation is arranged by the perception oscillator.When by test coil during without turn-to-turn short circuit, the starting of oscillation of perception oscillator, sinewave output is arranged, by coupled circuit, this sinusoidal signal is exported to coupled circuit again, capacitor C 1 forms resaistance-capacity coupling circuit with the input resistance of follow-up amplifying circuit, the characteristics of this resaistance-capacity coupling circuit are that quiescent points at different levels are independent mutually, and the front and back circuit is independent of each other.If be there is no fault by test coil, IN has the sinusoidal signal input, and capacitor C 1 is the rectification amplifying circuit to back by this signal coupling, makes triode Q1, Q2 conducting, drives green LED L1 luminous, carries out coil and indicates normally; If between tested coil turn, short-circuit conditions is arranged, this short-circuited coil will form closed-loop path, and produce high damping in magnetic circuit, make the blocking of oscillator, the input of IN no signal, and Q1, Q2 cut-off, thus L1 is extinguished; Warning circuit carries out sound immediately, light is reported to the police.
Claims (4)
1. a distribution transformer coils turn-to-turn short circuit tester, it is characterized in that: comprise perception oscillator, coupled circuit, normal indicating circuit, warning circuit, described perception oscillator is used for the whether short circuit of perception transformer coil turn-to-turn, the oscillator signal of perception oscillator sends to coupled circuit, the output terminal of coupled circuit connects normal indicating circuit, and the failure of oscillation signal of described perception oscillator sends to warning circuit.
2. distribution transformer coils turn-to-turn short circuit tester according to claim 1, it is characterized in that: described coupled circuit includes electric capacity, the first diode and the second diode, the first transistor amplifier and the second transistor amplifier, described electric capacity one end connects the oscillator signal output terminal of perception oscillator, the electric capacity other end connects the second diode cathode and the first diode cathode, the first diode cathode ground connection, the second diode cathode connects the first transistor base, the first transistor base also is connected with the first resistance, the first transistor emitter ground connection, collector connects the 12V power supply by the second resistance, collector connects the base stage of the second triode by the 3rd resistance, the emitter of the second triode connects the 12V power supply, collector connects ground connection after normal indicating circuit.
3. distribution transformer coils turn-to-turn short circuit tester according to claim 2 is characterized in that: described normal indicating circuit consists of green LED and the 4th resistance of series connection.
4. distribution transformer coils turn-to-turn short circuit tester according to claim 1, it is characterized in that: described warning circuit comprises loudspeaker warning circuit and red light emitting diodes warning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202792561U CN203324417U (en) | 2013-05-21 | 2013-05-21 | Turn-to-turn short circuit tester of distribution transformer coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202792561U CN203324417U (en) | 2013-05-21 | 2013-05-21 | Turn-to-turn short circuit tester of distribution transformer coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203324417U true CN203324417U (en) | 2013-12-04 |
Family
ID=49663755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202792561U Expired - Fee Related CN203324417U (en) | 2013-05-21 | 2013-05-21 | Turn-to-turn short circuit tester of distribution transformer coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203324417U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203906A (en) * | 2015-09-21 | 2015-12-30 | 吴建堂 | Coil interturn short-circuit tester |
-
2013
- 2013-05-21 CN CN2013202792561U patent/CN203324417U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203906A (en) * | 2015-09-21 | 2015-12-30 | 吴建堂 | Coil interturn short-circuit tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20150521 |
|
| EXPY | Termination of patent right or utility model |