CN202522626U - Wiring switching apparatus used for measuring direct current resistance of transformer - Google Patents
Wiring switching apparatus used for measuring direct current resistance of transformer Download PDFInfo
- Publication number
- CN202522626U CN202522626U CN2012200815460U CN201220081546U CN202522626U CN 202522626 U CN202522626 U CN 202522626U CN 2012200815460 U CN2012200815460 U CN 2012200815460U CN 201220081546 U CN201220081546 U CN 201220081546U CN 202522626 U CN202522626 U CN 202522626U
- Authority
- CN
- China
- Prior art keywords
- panel
- post
- terminal connections
- binding post
- direct current
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
A wiring switching apparatus used for measuring a direct current resistance of a transformer comprises a first panel and a second panel. The first panel and the second panel are coaxially installed. The first panel is provided with a terminal and a connection sheet. The second panel is provided with the terminal. The first panel and the second panel are epoxy resin round plates and are concentrically installed through a shaft rod. The first panel is fixedly connected with the shaft rod. The second panel forms clearance fit with the shaft rod. The shaft rod is provided with a handle. The apparatus of the utility model is simple and effective. A test result is accurate and a current test instrument function is extended. Production cost is reduced and field production safety reliability is increased. The apparatus is suitable for rapid field measurement.
Description
Technical field
The utility model relates to a kind of wiring switching device shifter of measuring transformer direct current resistance, belongs to the power test field.
Background technology
The direct current resistance of measuring transformer winding is a very important pilot project; When being defined in transformer handing-over, overhaul, light maintenance, change tap joint position, trouble shooting and prerun among " power equipment preventive trial rules " DL/T596-1996, direct current resistance that must the measuring transformer winding.Its objective is: the welding quality of inspection winding inner lead and lead-in wire; Whether each position contact of inspection shunting switch is good; Inspection winding or extension line have or not the place that fractures; The correctness of inspection parallel branch, whether exist winding by several parallel conducting wire coileds that the situation of one place or a few place broken string takes place; Inspection layer, turn-to-turn have or not the phenomenon of short circuit.
In Transformer Winding direct current resistance in-site measurement, particularly in the test of high capacity high-tension transformer, because the inductance of step down side winding is bigger, resistance is less, and the excitatory number of turn is few, and is unshakable in one's determination saturated even big electric current can not make.So it is bigger that direct current resistance is measured charging rate; Directly measure the low-pressure side winding D.C. resistance and often need dozens of minutes even several hours; Measurement is difficult for reaching stability number; Having increased the difficulty that status of equipment is judged, is the key that guarantees the DCR of Transformer accuracy of measurement so select suitable measurement means and measuring equipment for use.
By the recommendation of " power equipment preventive trial rules " DL/T596-1996, measure the high-power transformer winding D.C. resistance with " magnetic assist method " in the existing measuring method, it is short to have Measuring Time, data stabilization, test efficiency advantages of higher.But the weak point of magnetic assist method be when testing at the scene wiring complicated, switch line loaded down with trivial details, error connection might take place, if wiring gets loose even might produce instantaneous high pressure in measuring process, jeopardize equipment and personal safety.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of wiring switching device shifter of measuring transformer direct current resistance, starts with from the test principle of magnetic assist method; All test wires all are connected on the utility model switching device shifter; Be connected with full-automatic instrument for measuring DC resistance again, only need in the measurement to switch by the examination winding, thereby save the line falling process in the test through this switching device shifter; Avoided changing hidden danger such as wrong line, wiring get loose and produced, thus realize fast, accurately, safety, measure efficiently.
The above-mentioned purpose of the utility model is to realize through such technical scheme: a kind of wiring switching device shifter of measuring transformer direct current resistance; Comprise first panel; Second panel; First panel is provided with binding post and brace with the coaxial installation of second panel, said first panel, and second panel is provided with binding post.
Said first panel, second panel are the epoxy resin plectane and install with one heart through axostylus axostyle that first panel is fixedly connected with axostylus axostyle, and second panel cooperates with axostylus axostyle is movable.
Said axostylus axostyle is provided with handle.
Said second faceplate is provided with Uo terminal connections post in the center, 60 ° of spacings, circumference are provided with U on second panel
A, Ub, U
B, Uc, U
C, six terminal connections posts of Ua; Along the distribution of above-mentioned six binding posts, on second panel on 60 ° of spacings, the circumferencial direction correspondence be provided with I
A, Ib, I
B, Ic, I
C, I
a, six terminal connections posts;
Said first panel is provided with six binding posts: 1., 2., 3., 4., 5., 6. number binding post, the 1. corresponding Ua terminal connections of binding post post, the 2. corresponding Uc terminal connections of binding post post, the 3. corresponding I of binding post
ATerminal connections post, 4. binding post Ic terminal connections post, the 5. corresponding U of binding post
ATerminal connections post, the 6. corresponding Uo terminal connections of binding post post.
The utility model provides a kind of wiring switching device shifter of measuring transformer direct current resistance, is used with common on the market single channel and binary channels instrument for measuring DC resistance.Start with from magnetic assist method test principle; All test wires all are connected on this device, are connected with full-automatic instrument for measuring DC resistance again, only need in the measurement to switch by the examination winding through this switching device shifter; Thereby save the line falling process in the test, avoided changing hidden danger such as wrong line, wiring get loose and produced.Can realize quick, accurate, safe, measurement efficiently.This device is simple and effective, and test findings has higher accuracy, makes existing test apparatus function obtain extension, has reduced production cost, has improved the produced on-site safety reliability, is suitable for on-site rapid measurement.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Fig. 1 is the utility model apparatus structure synoptic diagram;
Fig. 2 is the utility model device second panel binding post synoptic diagram;
Fig. 3 is the utility model device first panel binding post synoptic diagram;
Fig. 4 is the utility model device and instrument for measuring DC resistance connection layout.
Embodiment
A kind of wiring switching device shifter of measuring transformer direct current resistance comprises first panel, 1, the second panel 2, said first panel 1 and the 2 coaxial installations of second panel, and said first panel 1 is provided with binding post and brace, and brace adopts copper sheet.
Said first panel 1, second panel 2 adopt diameter 10cm epoxy resin plectanes to make.
And pass through axostylus axostyle 3 and install with one heart, first panel 1 is fixedly connected with axostylus axostyle 3, second panel 2 and 3 movable cooperations of axostylus axostyle.
Said axostylus axostyle 3 is provided with handle 4.
Be positioned at the center on said second panel 2 and be provided with Uo terminal connections post, 60 ° of spacings, circumference are provided with U on second panel 2
A, U
b, U
B, Uc, U
C, six terminal connections posts of Ua; Along the distribution of above-mentioned six binding posts, on second panel 2 on 60 ° of spacings, the circumferencial direction correspondence be provided with I
A, I
b, I
B, Ic, I
C, I
a, six terminal connections posts; Said first panel 1 is provided with six binding posts: 1., 2., 3., 4., 5., 6. number binding post, the 1. corresponding Ua terminal connections of binding post post, the 2. corresponding Uc terminal connections of binding post post, the 3. corresponding I of binding post
ATerminal connections post, 4. binding post Ic terminal connections post, the 5. corresponding U of binding post
ATerminal connections post, the 6. corresponding Uo terminal connections of binding post post.
The contact of above-mentioned binding post is good, and through-current capability is greater than 10A, and through brace: the change of copper sheet position realizes short circuit, the cross-over connection of magnetic assist method in inside.Simultaneously, should note reducing of the influence of the resistance of the utility model device self, in case of necessity, measure the utility model device resistance value, so that in measurement, remove to direct current resistance.
The utility model device is connected as shown in Figure 3 with instrument for measuring DC resistance.
As shown in Figure 1, full-automatic instrument for measuring DC resistance commonly used in the test has single channel four terminals: V+, V-, I+, I-and binary channels six terminals: V
1+, V
2+, V
1-, V
2-, two kinds of I+, I-, it is following that test connects method:
The I shelves are surveyed R
AO, Rac:
The corresponding respectively voltage and current connection terminal that connects on the instrument for measuring DC resistance of six binding posts of first panel 1,1. ~ 6. the connection terminal on number corresponding instrument of binding post difference is following: (being that six terminals connect method in the bracket)
①—V+（V1+）；②—V-?（V1-）；③—I+；④—I-；⑤—（V2+）；⑥—（V2-）
Annotate: when instrument for measuring DC resistance has only four connection terminals, need measurement data stable read the back manually will be 1., 2. the test wire on the binding post switch to 5., 6. on the binding post.
The II shelves are surveyed R
BO, Rba: with handle 4 first panel 1 is turned clockwise 120 °, the chucking get final product.
The III shelves are surveyed R
CO, Rcb: handle 4 first panels 1 are turned clockwise 120 ° again, the chucking get final product.
Whenever switching a gear, through copper sheet the BC short circuit is met a and change into successively: the AB short circuit meets c, the CA short circuit meets b; The measuring-signal that instrument for measuring DC resistance is corresponding simultaneously is successively by Ua, Uc, U
A, Uo, I
A, Ic changes Ub, Ua, U into
B, Uo, I
B, I
aTo Uc, Ub, U
C, Uo, I
C, Ib, the measurement result of DCR of Transformer is also correspondingly by R
AO, Rac changes R successively into
BO, Rba to R
CO, Rcb.Simplify measuring process greatly, shortened Measuring Time, improved safe reliability.
Embodiment:
Model is SFP-300000/500, rated voltage 550/13.8kV, and rated capacity is 300MVA, connecting group is that measurement result is following on the transformer of YNd11:
Use the contrast of the utility model device before and after test time spent:
The result shows; The utility model device can well remedy the deficiency that the magnetic assist method is measured direct current resistance; Reduce the probability of human error; Measuring Time also shortened to about 30 minutes, had improved work efficiency greatly, can bring into play the effect of magnetic assist method in high capacity high voltage transformer winding D.C. resistance is measured better.
Claims (4)
1. the wiring switching device shifter of a measuring transformer direct current resistance; Comprise first panel (1); Second panel (2); It is characterized in that: said first panel (1) and the coaxial installation of second panel (2), said first panel (1) is provided with binding post and brace, and second panel (2) is provided with binding post.
2. according to the wiring switching device shifter of the said a kind of measuring transformer direct current resistance of claim 1; It is characterized in that: said first panel (1), second panel (2) are for the epoxy resin plectane, also through axostylus axostyle (3) installation with one heart; First panel (1) is fixedly connected with axostylus axostyle (3), and second panel (2) cooperates with axostylus axostyle (3) is movable.
3. according to the wiring switching device shifter of the said a kind of measuring transformer direct current resistance of claim 2, it is characterized in that: said axostylus axostyle (3) is provided with handle (4).
4. according to the wiring switching device shifter of claim 1 or 2 said a kind of measuring transformer direct current resistances, it is characterized in that: be positioned at the center on said second panel (2) and be provided with Uo terminal connections post, second panel (2) is gone up 60 ° of spacings, circumference is provided with U
A, U
b, U
B, U
c, U
C, U
aSix terminal connections posts; Along the distribution of above-mentioned six binding posts, correspondence is provided with I on 60 ° of the last spacings of second panel (2), the circumferencial direction
A, I
b, I
B, I
c, I
C, I
a, six terminal connections posts;
Said first panel (1) is provided with six binding posts: 1., 2., 3., 4., 5., 6. number binding post, the 1. corresponding U of binding post
aTerminal connections post, the 2. corresponding U of binding post
cTerminal connections post, the 3. corresponding I of binding post
ATerminal connections post, 4. binding post I
cTerminal connections post, the 5. corresponding U of binding post
ATerminal connections post, the 6. corresponding U of binding post
oThe terminal connections post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200815460U CN202522626U (en) | 2012-03-07 | 2012-03-07 | Wiring switching apparatus used for measuring direct current resistance of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200815460U CN202522626U (en) | 2012-03-07 | 2012-03-07 | Wiring switching apparatus used for measuring direct current resistance of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202522626U true CN202522626U (en) | 2012-11-07 |
Family
ID=47105569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200815460U Expired - Lifetime CN202522626U (en) | 2012-03-07 | 2012-03-07 | Wiring switching apparatus used for measuring direct current resistance of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202522626U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706970A (en) * | 2017-01-16 | 2017-05-24 | 国家电网公司 | Transformer direct-current resistance test connection switching box |
| CN106841705A (en) * | 2017-03-30 | 2017-06-13 | 江门市赛为电力科技有限公司 | A kind of transformer resistance tester being switched fast |
-
2012
- 2012-03-07 CN CN2012200815460U patent/CN202522626U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706970A (en) * | 2017-01-16 | 2017-05-24 | 国家电网公司 | Transformer direct-current resistance test connection switching box |
| CN106706970B (en) * | 2017-01-16 | 2023-11-24 | 国家电网公司 | Wiring conversion box for DC resistance test of transformer |
| CN106841705A (en) * | 2017-03-30 | 2017-06-13 | 江门市赛为电力科技有限公司 | A kind of transformer resistance tester being switched fast |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201955421U (en) | Wiring detector for multifunctional electric energy metering device | |
| CN102879697A (en) | Optimized power transformer testing method | |
| CN201298448Y (en) | A split type voltage mutual inductor | |
| CN102981079B (en) | Response waveform detection method for straightly hanging type reactive power generation device | |
| CN106443561B (en) | Integral inspection method and device for electric energy metering device with voltage of 35kV or below | |
| CN101614798B (en) | Polarity detection system of electronic transformer | |
| CN102156273A (en) | Electric energy meter verification circuit for error test and direct current and even harmonic test | |
| CN110031718B (en) | Method for verifying integrity of alternating current circuit by pressurizing low-voltage side of railway traction station | |
| CN102445583B (en) | Voltage signal monitoring device of power energy quality monitoring device and circuit as well as application thereof | |
| CN202770945U (en) | Transposed conductor short circuit online testing device | |
| CN202522626U (en) | Wiring switching apparatus used for measuring direct current resistance of transformer | |
| CN103033700B (en) | Detecting device of responding wave form of dynamic reactive power compensation equipment and detecting method of the same | |
| CN202649451U (en) | Portable current transformer polarity calibration instrument | |
| CN105182173A (en) | Novel combined-type mutual inductor polarity tester | |
| CN104808022A (en) | Temperature rise test connection method for three-side combined operation of three-phase three-winding transformer | |
| CN205157757U (en) | Standard current transformer secondary load improves device | |
| CN209069965U (en) | DC Resistance Test of Transformer rapid wiring device | |
| CN103424672A (en) | Large wind turbine generator stator insulation discharge starting and extinction voltage test method | |
| CN104459451B (en) | Transformer current mutual inductor polarity tester and testing method | |
| CN102262203B (en) | Device for monitoring insulating state of capacitor sleeve online and method thereof | |
| CN216285463U (en) | Power flow analyzer for power system | |
| CN204789879U (en) | Test system is put in electrified office of cubical switchboard and voltage signal extraction element thereof | |
| CN201955466U (en) | Multifunctional electric apparatus parameter test instrument | |
| CN201464596U (en) | Electronic transducer polarity detecting system | |
| CN106501750A (en) | A kind of voltage transformer site error detects secondary wiring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |