CN207751610U - A kind of dry transformer temperature measurement instrument calibration equipment - Google Patents
A kind of dry transformer temperature measurement instrument calibration equipment Download PDFInfo
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- CN207751610U CN207751610U CN201721781953.1U CN201721781953U CN207751610U CN 207751610 U CN207751610 U CN 207751610U CN 201721781953 U CN201721781953 U CN 201721781953U CN 207751610 U CN207751610 U CN 207751610U
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Abstract
The utility model is a kind of dry transformer temperature measurement instrument calibration equipment, including babinet, three three-prong plugs and three verification channel units being arranged in babinet, and three verification channel units are electrically connected by three coring circuits with corresponding three-prong plug respectively；The verification channel unit includes change-over switch, knob, more gear resistors, potentiometer.Calibration equipment described in the utility model can accurately verify the measurement accuracy of dry transformer temperature measurement instrument, convenient to be verified, safeguarded to dry transformer temperature measurement instrument.
Description
Technical field
The utility model belongs to electric system maintenance special instrument field, is related to a kind of dry transformer temperature measurement instrument verification dress
It sets.
Background technology
In electric system, various power plants, substation, factory distribution system in, dry transformer temperature measurement instrument be survey
The unique device and the unique non-ionizing energy loss device of dry-type transformer for measuring dry-type transformer, if temperature measurer breaks down, pole
Power plant and substation's tripping are easily caused, can cause non-ionizing energy loss that cannot correctly act when serious, transformer is due to temperature height
Explosion or burnout failure, bring a negative impact the safe and stable operation of the distribution system in power plant, substation, factory.
About the verification of dry transformer temperature measurement instrument, standard resistance box is usually utilized, but commercial standard resistance box is usually only
There are one verification channels, and are two-wire system measurement method, and logical in the dry transformer temperature measurement instrument of power plant, substation, factory
It is often three-wire system, and there are three three single-phase transformers that single-phase temperature measuring unit corresponds to dry-type transformer for tool, if therefore using mark
Quasi- resistance box verifies dry transformer temperature measurement instrument, it is difficult to same to three single-phase temperature measuring units of dry transformer temperature measurement instrument
Shi Jinhang verification operations, thus not only easily there is error in check results, but also influence verification efficiency.
Invention content
The purpose of this utility model is to provide a kind of dry transformer temperature measurement instrument calibration equipments, are become with improving verification dry type
The precision and efficiency of depressor temperature measurer, it is convenient that dry transformer temperature measurement instrument is verified, is safeguarded.
Dry transformer temperature measurement instrument calibration equipment described in the utility model, including babinet, three three-prong plug C-1 and setting
The first verification channel unit, the second verification channel unit in babinet, third verify channel unit, each to verify channel unit point
It is not electrically connected with corresponding three-prong plug C-1 by three coring circuits；The first verification channel unit, the second verification channel unit
It is identical with third verification channel unit structure, it is each to verify channel unit including change-over switch K1, knob K2, more gear resistors
R-1 and potentiometer R-2, the change-over switch K1 are the change-over switch for including X static palping foot, and X >=9, multi gear position resistance
Device R-1 includes the different haptic element of Y resistance value, and Y >=6, the potentiometer include the first top flat pin, the second top flat pin and
One movable plate pin, the power positive end circuit S-1 and signal output plus terminal circuit S-2 of three coring circuit are connected rear and connect current potential
The first top flat pin, the incoming end of more gear resistor R-1 and the 1st static palping foot of change-over switch K1 of device R-2, the multi gear position
The 2nd static palping foot that the haptic element of resistor R-1 is separately connected change-over switch according to the sequence of resistance value from small to large is quiet to X -2
Haptic element, -1 static palping foot of X of the second top flat pin connection change-over switch of the potentiometer R-2, the of the change-over switch K1
X static palping foot skies connect, and the moving contact K-13 of change-over switch K1 is connected with the power supply negative terminal circuit S-3 of three coring circuits, the knob K2
It is connected with the movable plate pin of potentiometer R-2, to the movement of the movable plate pin of controlling potential device.
Compact-sized to make, the first verification of connection channel unit and three coring circuits of corresponding three-prong plug C-1 connect second
Verification channel unit and three coring circuits of corresponding three-prong plug C-1 connects third and verify channel unit and corresponding three-prong plug C-1
Three coring circuit concentrated settings in same multicore cable.
In order to more accurately be verified to dry transformer temperature measurement instrument, it is preferable that the change-over switch K1 be include 0 foot
The change-over switch of~12 13 static palping foots of foot, more gear resistors include 10 different haptic elements of resistance value, and described three
After the power positive end circuit of coring circuit is connected with signal output plus terminal circuit and connect the first top flat pin of potentiometer, multi gear position electricity
0 foot of the incoming end and change-over switch of device is hindered, the haptic element of more gear resistors divides according to the sequence of resistance value from small to large
Not Lian Jie change-over switch 1 foot~10 foot, 11 feet of the second top flat pin connection change-over switch of the potentiometer, the conversion
12 foot skies of switch connect, and the moving contact of change-over switch is connected with the power supply negative terminal circuit of three coring circuits.
In order to more accurately be verified to dry transformer temperature measurement instrument, in particular for the normal of dry transformer temperature measurement instrument
The phasing meter of rule selection PT100 temperature detecting resistances optimizes, the specifications of more gear resistors be drift 20ppm with
Under, precision 0.01%, by resistance value be 100 ohm, 9.7347 ohm, 9.6624 ohm, 9.5903 ohm, 9.5181 ohm,
9.4459 ohm, 9.3737 ohm, 9.3016 ohm, 9.2293 ohm, 36.1955 ohm of high-accuracy resistance of RX70-E military project grades
Series connection, to simulate 0 DEG C, 25 DEG C, 50 DEG C, 75 DEG C, 100 DEG C, 125 DEG C, 150 DEG C, 175 DEG C, 200 DEG C, 300 DEG C of temperature values,
It can carry out arbitrarily customizing resistance value according to actual needs.
When the gear of change-over switch is selected as adjustable temperature, the movable plate pin of potentiometer can be carried out by the knob
Control, to change the resistance of potentiometer.
The utility model has the beneficial effect that：
1, calibration equipment described in the utility model can accurately verify the measurement accuracy of dry transformer temperature measurement instrument, convenience pair
Dry transformer temperature measurement instrument is verified, is safeguarded that staff can accurately be tested by calibration equipment described in the utility model
Temperature alarm and overtemperature tripping etc. verification project, reduce dry transformer temperature measurement instrument failure to power plant, substation, factory distribution
Risk caused by system.
2, the plug of calibration equipment described in the utility model is three-wire system, and is had there are three channel unit is verified, can be simultaneously
To tool, there are three the dry transformer temperature measurement instrument of single-phase temperature measuring unit to verify, and possesses at least six definite value gears for school
Work is tested, thus verification speed can be greatly improved, and reduces verification error.
3, calibration equipment described in the utility model is compact-sized, easy to use, is conducive to promote the use of.
Description of the drawings
Fig. 1 is the structure diagram of dry transformer temperature measurement instrument calibration equipment described in the utility model and is surveyed with dry-type transformer
The connection diagram of Wen Yi.
Fig. 2 is the appearance schematic diagram and and dry-type transformer of dry transformer temperature measurement instrument calibration equipment described in the utility model
The connection diagram of temperature measurer.
Fig. 3 is a kind of knot that channel unit is individually verified in dry transformer temperature measurement instrument calibration equipment described in the utility model
Structure schematic diagram.
In figure, 1 babinet, 2 dry transformer temperature measurement instrument, 2-1A phase temperature measuring units, 2-2B phase temperature measuring units, 2-3C phase thermometrics
Unit, 3 multicore cables, 4 first verification channel units, 5 second verification channel units, 6 thirds verify channel unit.
Specific implementation mode
Calibration equipment described in the utility model is described in further detail by way of example and in conjunction with the accompanying drawings, but simultaneously
It is not intended to be any restriction to scope of protection of the utility model.
The dry transformer temperature measurement instrument calibration equipment that the present embodiment is provided is as shown in Figure 1 and Figure 2, including babinet 1, three
Three-prong plug C-1 and the first verification channel unit 4, second being arranged in babinet verify channel unit 5, third verification channel list
Member 6, the first verification channel unit 4, second verifies channel unit 5, third verification channel unit 6 passes through three coring circuits respectively
It is electrically connected with corresponding three-prong plug C-1；Three core wires of the connection the first verification channel unit 4 and corresponding three-prong plug C-1
Road, the second verification of connection channel unit 5 and three coring circuits of corresponding three-prong plug C-1 connect third and verify channel unit 6 and phase
Answer the three coring circuit concentrated settings of three-prong plug C-1 in same multicore cable 3.
First verification channel unit 4, second verification channel unit 5 and third verification 6 structure of channel unit are identical, this implementation
In example, each structure for verifying channel unit is as shown in figure 3, including change-over switch K1, knob K2, more gear resistor R-1, electricity
Position device R-2, the change-over switch K1 are the change-over switch for including foot (K-0~K-12) 13 static palping foots of 0 foot~12, described more
Gear resistor R1 includes 10 different haptic elements of resistance, and the potentiometer R-2 includes the first top flat pin, the second top flat pin
With a movable plate pin, the power positive end circuit S-1 and signal output plus terminal circuit S-2 of three coring circuit are connected rear and connect electricity
The first top flat pin, the incoming end of more gear resistor R-1 and the 0 foot K-0 of change-over switch K1 of position device R-2, the multi gear position
The haptic element of resistor R-1 is separately connected -10 foot of 1 foot (K-1~K-10) of change-over switch K1 according to the sequence of resistance from small to large,
The 12 foot K-12 of 11 the foot K-11, the change-over switch K1 of the second top flat pin connection change-over switch K1 of the potentiometer R-2
Sky connects, and the moving contact K-13 of change-over switch K1 is connected with the power supply negative terminal circuit S-3 of three coring circuits, the knob K2 and potentiometer
The movable plate pin of R-2 is connected, to the movement of the movable plate pin of controlling potential device.
The construction of more gear resistor R-1 be drift in 20ppm hereinafter, precision is 0.01%, be 100 Europe by resistance value
Nurse, 9.7347 ohm, 9.6624 ohm, 9.5903 ohm, 9.5181 ohm, 9.4459 ohm, 9.3737 ohm, 9.3016 Europe
Nurse, 9.2293 ohm, the high-accuracy resistance series connection of 36.1955 ohm of RX70-E military project grades, to simulate 0 DEG C, 25 DEG C, 50 DEG C, 75
DEG C, 100 DEG C, 125 DEG C, 150 DEG C, 175 DEG C, 200 DEG C, 300 DEG C of temperature values.
In the present embodiment, the potentiometer R-2 selection models WSD3-13, the potentiometer that resistance value is 0-200 ohm；Institute
It states change-over switch K1 and selects 13 gear KHT-2 selecting switch；More gear resistor R-1 select model RX24 types.They
It can be bought by market.
As shown in Figure 1 and Figure 2, the occupation mode of calibration equipment described in the present embodiment：By three three-prong plug C-1 with have
The dry transformer temperature measurement instrument 2 of three single-phase temperature measuring units is attached, specially by three three-prong plug C-1 respectively with A phases
Then the 2-3 electrical connections of temperature measuring unit 2-1, B phase temperature measuring unit 2-2 and C phase temperature measuring unit pass through each verification channel unit respectively
Change-over switch K1 and knob K2 are adjusted, and are verified to each single-phase temperature measuring unit of dry transformer temperature measurement instrument 2.
The change-over switch K1 has 13 gears, corresponds to 0 foot~12,13 static palping foots of foot (K-0~K-12) respectively,
It is followed successively by short trouble, 0 DEG C, 25 DEG C, 50 DEG C, 75 DEG C, 100 DEG C, 125 DEG C, 150 DEG C, 175 DEG C, 200 DEG C, 300 DEG C, temperature controllable
Degree, open fault.Above-mentioned 13 gears provide two kinds of fault simulations, a kind of verification of adjustable temperature and ten kinds of fixations for verifying work
Temperature checking mode.
When the gear of change-over switch is selected as adjustable temperature, the movable plate pin of potentiometer can be carried out by the knob
Control, to change the resistance of potentiometer.
Claims (3)
1. a kind of dry transformer temperature measurement instrument calibration equipment, it is characterised in that including babinet (1), three three-prong plugs (C-1) and
The first verification channel unit (4), the second verification channel unit (5), the third verification channel unit (6) being arranged in babinet, respectively
Channel unit is verified to be electrically connected with corresponding three-prong plug (C-1) by three coring circuits respectively；
The first verification channel unit (4), the second verification channel unit (5) are identical with third verification channel unit (6) structure,
Each verification channel unit is described including change-over switch (K1), knob (K2), more gear resistors (R-1) and potentiometer (R-2)
Change-over switch (K1) is the change-over switch for including X static palping foot, and X >=9, and more gear resistors (R-1) include Y resistance
It is worth different haptic elements, and Y >=6, the potentiometer (R-2) is drawn including the first top flat pin, the second top flat pin and a movable plate
The power positive end circuit (S-1) of foot, three coring circuit is connected rear with signal output plus terminal circuit (S-2) and meets potentiometer (R-
2) the 1st static palping foot of the incoming end and change-over switch (K1) of the first top flat pin, more gear resistors (R-1), the multi gear
The haptic element of position resistor (R-1) is separately connected the 2nd static palping foot of change-over switch to X-according to the sequence of resistance value from small to large
2 static palping foots, -1 static palping foot of X of the second top flat pin connection change-over switch of the potentiometer (R-2), the change-over switch
(K1) X static palping foot sky connects, the moving contact (K-13) of change-over switch (K1) and power supply negative terminal circuit (S-3) phase of three coring circuits
Even, the knob (K2) is connected with the movable plate pin of potentiometer (R-2), to the movement of the movable plate pin of controlling potential device.
2. dry transformer temperature measurement instrument calibration equipment according to claim 1, it is characterised in that：The first verification of the connection is logical
Road unit (4) and three coring circuits of corresponding three-prong plug (C-1) connect the second verification channel unit (5) and corresponding three-prong plug
(C-1) three coring circuit concentrated settings of three coring circuits, connection third verification channel unit (6) and corresponding three-prong plug (C-1)
In same multicore cable (3).
3. dry transformer temperature measurement instrument calibration equipment according to claim 1 or claim 2, it is characterised in that：The change-over switch
(K1) it is the change-over switch for including foot (K-0~K-12) 13 static palping foots of 0 foot~12, more gear resistors (R-1) packets
Include 10 different haptic elements of resistance value, the power positive end circuit (S-1) and signal output plus terminal circuit (S-2) of three coring circuit
Be connected the first top flat pin, the incoming end of more gear resistors (R-1) and 0 foot of change-over switch rear and that connect potentiometer (R-2)
(K-0), the haptic element of more gear resistors (R-1) is separately connected the 1 of change-over switch according to the sequence of resistance value from small to large
The foot (K-1~K-10) of foot~10,11 feet (K-11) of the second top flat pin connection change-over switch of the potentiometer (R-2), institute
12 feet (K-12) sky for stating change-over switch (K1) connects, the power supply negative terminal of moving contact (K-13) and three coring circuits of change-over switch (K1)
Circuit (S-3) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721781953.1U CN207751610U (en) | 2017-12-19 | 2017-12-19 | A kind of dry transformer temperature measurement instrument calibration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721781953.1U CN207751610U (en) | 2017-12-19 | 2017-12-19 | A kind of dry transformer temperature measurement instrument calibration equipment |
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| Publication Number | Publication Date |
|---|---|
| CN207751610U true CN207751610U (en) | 2018-08-21 |
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ID=63149344
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721781953.1U Active CN207751610U (en) | 2017-12-19 | 2017-12-19 | A kind of dry transformer temperature measurement instrument calibration equipment |
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| Country | Link |
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| CN (1) | CN207751610U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111258304A (en) * | 2020-02-28 | 2020-06-09 | 福州英诺电子科技有限公司 | Temperature controller verifying attachment |
-
2017
- 2017-12-19 CN CN201721781953.1U patent/CN207751610U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111258304A (en) * | 2020-02-28 | 2020-06-09 | 福州英诺电子科技有限公司 | Temperature controller verifying attachment |
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