CN101387657B - Standard current transformer integration apparatus for on-site detection - Google Patents
Standard current transformer integration apparatus for on-site detection Download PDFInfo
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- CN101387657B CN101387657B CN2008100553860A CN200810055386A CN101387657B CN 101387657 B CN101387657 B CN 101387657B CN 2008100553860 A CN2008100553860 A CN 2008100553860A CN 200810055386 A CN200810055386 A CN 200810055386A CN 101387657 B CN101387657 B CN 101387657B
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Abstract
The invention relates to an on-site standard current transformer integrated device, for resolving the problems of the prior art such as disorder wiring, low safety, difficult motion, narrow detection range and low efficiency, which comprises a multi-ratio main current transformer (1) and a single-ratio auxiliary current transformer (2) for converting the secondary coil 5A of the current transformer into 1A cascade which are arranged at the left of a frame in a shell (7), and a current booster (6) at the right of the frame in the shell (7), wherein the hole of the annular iron core of the multi-ratio main current transformer (1) is opposite to the hole of the annular iron core of the current booster (6), the horizontal distance between the multi-ratio main current transformer (1) and the current booster (6) is 100 to 200mm, a front panel (4) is arranged between the multi-ratio main current transformer (1) and the current booster (6) and is provided with a through hole. The on-site standard current transformer integrated device has high integrality and fast on-site detection.
Description
Technical field
The present invention relates to a kind of critical point field electric energy measurement and detect the standard current transformer integrating device that electric power mutual-inductor is used, particularly a kind of standard current transformer and current lifting device employing threeway feedthrough hole structure-integrated from up-flow standard current transformer and integrating device thereof.
Background technology
At present, the standard current transformer that electric energy metrical detects usefulness has three kinds, a kind of is the standard current transformer of not punching band current lifting device, a kind of more common standard current transformer that carries current lifting device one logical core-theaded type also has a kind of standard current transformer that need not join current lifting device with current lifting device in addition.All be covered with on the heavy and panel of these three kinds of standard current transformers and current lifting device equipment benzene represent all no-load voltage ratio taps once with the big and small copper binding post of secondary, need to adopt spanner to switch binding post in turn and change mutual inductor ratio, also to be equipped with when testing in addition voltage regulator, mutual-inductor tester, current loading case and plurality of specifications once with the secondary lead.Therefore, they exist in the electric power transformer field test, and testing equipment is many, volume is big, quality is heavy, wiring is random, dangerous, mobile difficulty, the shortcoming that detection range is narrow and efficient is low, labor strength is big.
Summary of the invention
Standard current transformer integration apparatus for on-site detection provided by the invention has solved the equipment heaviness that exists in the existing current mutual inductor on site detection, moves difficulty, and the random fallibility of wiring is dangerous, the technical problem that detection efficiency is low.
The present invention solves above technical problem by the following technical programs:
Standard current transformer integration apparatus for on-site detection, comprise polytropic ratio main current mutual-inductor 1, Current Transformer Secondary 5A changes the monotropic than secondary current instrument transformer 2 of 1A cascade, top panel 3, front panel 4, Current Transformer Secondary 5A and 1A change over switch 5, current lifting device 6, shell 7, the secondary tap switch 8 of polytropic ratio main current mutual-inductor 1, the following tap terminal row 9 of a 100A of polytropic ratio main current mutual-inductor 1, a terminal board 10 of current lifting device 6, the secondary connection terminal board 11 of polytropic ratio current transformer 1, described polytropic ratio main current mutual-inductor 1 summation current transformer secondary 5A changes the monotropic left side that is fixedly installed on the frame in the shell 7 than secondary current instrument transformer 2 of 1A cascade, described current lifting device 6 is fixedly installed on the right side of the frame in the shell 7, feedthrough hole in feedthrough hole in the polytropic ratio main current mutual-inductor 1 and the current lifting device 6 is oppositely arranged, and the level interval between polytropic ratio main current mutual-inductor 1 and the current lifting device 6 is between 100mm～200mm, the front panel 4 that is provided with between polytropic ratio main current mutual-inductor 1 and the current lifting device 6 is provided with one and passes through the hole, thereby realize the feedthrough hole in the polytropic ratio main current mutual-inductor 1, the Kong Sankong that passes through that is provided with on feedthrough hole in the current lifting device 6 and the front panel 4 communicates, and has formed on-the-spot detection standard current transformer and current lifting device threeway feedthrough hole integral structure.
This device is provided with standby external lead 23 of current transformer and the standby external secondary lead 24 of current lifting device, and these two leads are its length of multiply annealed copper wire and are 7.5～8 meters, and their cross section is 35mm
2One end of the standby external lead 23 of current transformer and the polar end of tested current transformer link together, the feedthrough hole polar end that the other end passes earlier in the polytropic ratio main current mutual-inductor 1 is serially connected with an end of current lifting device 6 standby external secondary leads 24 by passing through in the feedthrough hole of hole in polytropic ratio main current mutual-inductor 1 behind circulation punching two to four circles of being provided with on the front panel 4 then to non-polar end, the other end of current lifting device 6 standby external secondary leads 24 passes pass through hole feedthrough hole in current lifting device 6 in punching 6～9 circles of feedthrough hole by being provided with on the front panel 4 in the current lifting device 6, be connected with the non-polar end of tested current transformer then, thereby form the once closed test loop that detects.
This device is provided with standby external lead 23 of current transformer and the standby external secondary lead 24 of current lifting device, and these two leads are its length of multiply annealed copper wire and are 7.5～8 meters,, their cross section is 35mm
2Standby external lead 23 of current transformer and current lifting device 6 standby external secondary leads 24 are connected together, one end and the tested current transformer polar end of also wiring are linked together, and the feedthrough hole polar end that the other end of wiring passes earlier in the polytropic ratio main current mutual-inductor 1 is punching one circle to non-polar end, directly pass pass through hole feedthrough hole in current lifting device 6 in punching 6～9 circles of feedthrough hole in the current lifting device 6 again by being provided with on the front panel 4, be connected with the non-polar end of tested current transformer then, thereby form the once closed test loop that detects.
In described shell 7, also be integrated with voltage regulator 14.
In described shell 7, except that being integrated with voltage regulator 14, also be integrated with mutual-inductor tester 16 and analog current load box 17 and pull bar assembly 19 and move wheel 20.
The present invention have the integrated level height, on-the-spot detect quick, efficient is high, test specification is wide, it is flexible, simple to operate to move, volume little in light weight carry light, energy consumption is low and safeguard easily.
Description of drawings:
Fig. 1 is the front view of the embodiment of the invention 1
Fig. 2 is the left view of the embodiment of the invention 1
Fig. 3 is the rearview of the embodiment of the invention 1
Fig. 4 is the circuit connection diagram of the embodiment of the invention 1
Fig. 5 is the front view of the embodiment of the invention 2
Fig. 6 is the left cutaway view of the embodiment of the invention 2
Fig. 7 is the rearview of the embodiment of the invention 2
Fig. 8 is the circuit connection diagram of the embodiment of the invention 2
Fig. 9 is the front view of the embodiment of the invention 3
Figure 10 is the left cutaway view of the embodiment of the invention 3
Figure 11 is the rearview of the embodiment of the invention 3
Figure 12 is that working state figure is looked on the right side of the embodiment of the invention 3
Figure 13 is the circuit connection diagram of the embodiment of the invention 3
Embodiment
Embodiment one:
Standard current transformer integration apparatus for on-site detection in the present embodiment is seen accompanying drawing 1 accompanying drawing 2 accompanying drawings 3 accompanying drawings 4, it comprises polytropic ratio main current mutual-inductor 1, Current Transformer Secondary 5A changes the monotropic than secondary current instrument transformer 2 of 1A cascade, top panel 3, front panel 4, Current Transformer Secondary 5A and 1A change over switch 5, current lifting device 6, shell 7, main current mutual-inductor secondary tap switch 8, the following tap terminal row 9 of 100A of main current mutual-inductor, terminal board 10 of current lifting device, secondary wiring of current mutual inductor terminal board 11, the standby external primary line 23 of current transformer, the standby external secondary line 24 of current lifting device, the external secondary line group 25 of current transformer.Its inside is provided with clamp system, the punching sleeve pipe, clamp system is located at shell 7 the insides, the punching sleeve pipe cooperate with clamp system also be located at the inside, left side in the monotropic frame that is fixed on shell 7 than secondary current instrument transformer 2 that three clamp systems change the 1A cascade to polytropic ratio main current mutual-inductor 1 summation current transformer secondary 5A respectively, current lifting device 6 is fixed on right side in the frame of shell 7, top panel 3 is fixed on top by the handgrip of both sides, shell 7 top, front panel 4 is fixed on the front of shell 7, Current Transformer Secondary 5A and 1A change over switch 5, main current mutual-inductor secondary tap switch 8 summation current transformer secondary connection terminal boards 11, current lifting device Input terminal block 10 all is fixed in the above on the plate 3, the following tap terminal of 100A of main current mutual-inductor row 9 is fixed on the front panel 4, the spacing of polytropic ratio main current mutual-inductor 1 and current lifting device 6 be controlled between 100mm～200mm and polytropic ratio main current mutual-inductor 1 feedthrough hole and current lifting device 6 feedthrough holes and front panel 4 on hole formation threeway feedthrough hole integral structure.Current Transformer Secondary 5A changes the 1A cascade monotropicly presses accompanying drawing 4 cascades or disconnection than secondary current instrument transformer 2 and polytropic ratio main current mutual-inductor 1 by Current Transformer Secondary 5A and 1A change over switch 5 and main current mutual-inductor secondary tap switch 8 and secondary wiring of current mutual inductor terminal board 11, Current Transformer Secondary 5A changes the 1A cascade monotropicly is mainly used in polytropic ratio main current mutual-inductor 1 all 5A～2000A/5A no-load voltage ratio than secondary current instrument transformer 2 and is converted to 5A～2000A/1A, has enlarged detection range.The spacing of polytropic ratio main current mutual-inductor 1 and current lifting device 6 is controlled between 100mm～200mm, for no-load voltage ratio below 100A tap L by polytropic ratio main current mutual-inductor 1 the inside
1, L
2, L
3Be connected to corresponding polarity terminal L on the following tap terminal row 9 of 100A of main current mutual-inductor with the secondary tap of current lifting device 6 the insides by accompanying drawing 4 methods
1, nonpolar terminal L
2, L
3On, detect 20A of current transformer ratio like this when following, two 7.5 rice noodles (35mm
2/ root) one meets polar end L respectively
1With non-polar end L
3On the corresponding terminal, L
1The other end is corresponding to link together L with polar end of tested current transformer
3The other end is corresponding to link together with tested current transformer non-polar end once, has formed the once closed test loop that detects like this.Main current mutual-inductor secondary tap switch 8 switches the secondary tap equally according to tested current transformer ratio makes its no-load voltage ratio unanimity, presses national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " by the external secondary line group 25 of secondary wiring of current mutual inductor terminal board 11 Current Transformer and inserts analog current load box and mutual-inductor tester and tested Current Transformer Secondary formation secondary closure error of measurement comparison loop.When detecting 25A of current transformer ratio～100A, two 7.5 rice noodles (35mm
2/ root) one meets polar end L respectively
1With non-polar end L
2On the corresponding terminal, L
1The other end is corresponding to link together L with tested current transformer polar end once
2The other end is corresponding to link together with tested current transformer non-polar end once, has formed the once closed test loop that detects like this.Main current mutual-inductor secondary tap switch 8 switches the secondary tap equally according to tested current transformer ratio makes its no-load voltage ratio unanimity, presses national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " by the external secondary line group 25 of secondary wiring of current mutual inductor terminal board 11 Current Transformer and inserts analog current load box and mutual-inductor tester and tested Current Transformer Secondary formation secondary closure error of measurement comparison loop; When detecting 150A to the current transformer of 400A no-load voltage ratio, the feedthrough hole of the feedthrough hole of polytropic ratio main current mutual-inductor 1 and current lifting device 6 forms threeway feedthrough hole integral structure, two 7.5 rice noodles (35mm by the hole of passing through on the front panel 4
2/ root) use line as standby external primary line 23 of current transformer and the standby external secondary line 24 of current lifting device respectively, these two leads are its length of multiply annealed copper wire and are 7.5 meters, and their cross section is 35mm
2One end of the standby external lead 23 of current transformer and the polar end of tested current transformer link together, the other end passes feedthrough hole polar end in the polytropic ratio main current mutual-inductor 1 earlier to non-polar end, then by be provided with on the front panel 4 pass through the hole in polytropic ratio main current mutual-inductor 1 according to using corresponding terminal L on the following tap terminal row 9 of 100A of main current mutual-inductor with an end of current lifting device 6 standby external secondary leads 24 behind circulation punching two to four circles in the different feedthrough hole of tested current transformer ratio
1, L
2, L
3In any terminal be fastenedly connected it be serially connected, the other end of current lifting device 6 standby external secondary leads 24 passes pass through hole feedthrough hole in current lifting device 6 in punching 6～9 circles of feedthrough hole by being provided with on the front panel 4 in the current lifting device 6, be connected with the non-polar end of tested current transformer then, thereby form the once closed test loop that detects.Main current mutual-inductor secondary tap switch 8 switches the secondary tap equally according to tested current transformer ratio makes its no-load voltage ratio unanimity, presses national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " by the external secondary line group 25 of secondary wiring of current mutual inductor terminal board 11 Current Transformer and inserts analog current load box and mutual-inductor tester and tested Current Transformer Secondary formation secondary closure error of measurement comparison loop; When detecting 500A to the current transformer of 1000A no-load voltage ratio, two 7.5 rice noodles (35mm
2/ root) as standby external primary line 23 of current transformer and the standby external secondary line 24 usefulness lines of current lifting device and lump together, these two leads are its length of multiply annealed copper wire and are 7.5 meters,, their cross section is 35mm
2Standby external lead 23 of current transformer and current lifting device 6 standby external secondary leads 24 are connected together, one end and the tested current transformer polar end of also wiring are linked together, and the feedthrough hole polar end that the other end of wiring passes earlier in the polytropic ratio main current mutual-inductor 1 is punching one circle to non-polar end, directly pass pass through hole feedthrough hole in current lifting device 6 in punching 6～9 circles of feedthrough hole in the current lifting device 6 again by being provided with on the front panel 4, be connected with the non-polar end of tested current transformer then, thereby form the once closed test loop that detects.Main current mutual-inductor secondary tap switch 8 switches the secondary tap equally according to tested current transformer ratio makes its no-load voltage ratio unanimity, presses national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " by the external secondary line group 25 of secondary wiring of current mutual inductor terminal board 11 Current Transformer and inserts analog current load box and mutual-inductor tester and tested Current Transformer Secondary formation secondary closure error of measurement comparison loop; When detecting the current transformer of a 1200A～2000A/5A no-load voltage ratio, can wear a circle more and wait the ampere-turn method by once detecting for the following instrument transformer of 1000A according to national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " employing if tested current transformer also is a core-theaded type; If tested current transformer is not core-theaded type then advises that dwindling five times according to multiplying power becomes 240A～400A/1A and test; Outer auxiliary tone depressor output is received the corresponding A on the Input terminal block 10 of current lifting device 6, on terminal of X, and the corresponding 220V city's electric forming power supply input circuit that inserts of outer auxiliary tone depressor input.Above-mentioned finishing can enter test mode.
Embodiment two:
The structure-integrated band voltage regulator of threeway feedthrough hole in the present embodiment is seen accompanying drawing 5 accompanying drawings 6 accompanying drawings 7 accompanying drawings 8 from up-flow standard current transformer integrating device, it comprises that polytropic ratio main current mutual-inductor 1, Current Transformer Secondary 5A change the monotropic than secondary current instrument transformer 2, top panel 3, front panel 4 of 1A cascade, Current Transformer Secondary 5A and 1A change over switch 5, current lifting device 6, shell 7, main current mutual-inductor secondary tap switch 8, the following tap terminal row 9 of 100A of main current mutual-inductor, secondary wiring of current mutual inductor terminal board 11.Use external application change over switch 12, voltage regulator external application connecting terminal block 13, voltage regulator 14 in the voltage regulator, voltage regulator output monitoring form 15, voltage regulator Input terminal block 22, the standby external primary line 23 of current transformer, the standby external secondary line 24 of current lifting device, the external secondary line group 25 of current transformer.Its inside is provided with clamp system, the punching sleeve pipe, clamp system is located at shell 7 the insides, the punching sleeve pipe cooperate with clamp system also be located at the inside, left side in the monotropic frame that is fixed on shell 7 than secondary current instrument transformer 2 that three clamp systems change the 1A cascade to polytropic ratio main current mutual-inductor 1 summation current transformer secondary 5A respectively, current lifting device 6 is fixed on right side in the frame of shell 7, top panel 3 is fixed on top by the handgrip of both sides, shell 7 top, front panel 4 is fixed on the front of shell 7, Current Transformer Secondary 5A and 1A change over switch 5, main current mutual-inductor secondary tap switch 8, secondary wiring of current mutual inductor terminal board 11, voltage regulator output monitoring form 15 is separately fixed on the top panel 3, the following tap terminal row 9 of 100A of main current mutual-inductor is fixed on the front panel 4, be fixed on shell 7 back lower left quarters with external application change over switch 12 and voltage regulator external application connecting terminal block 13 according to integrated needs in the voltage regulator, voltage regulator Input terminal block 22 is fixed on shell 7 back right lower quadrants according to integrated needs, and voltage regulator 14 is removed the voltage regulator shell and is fixed on middle and lower part, shell 7 back.Current Transformer Secondary 5A changes the 1A cascade monotropicly presses accompanying drawing 8 cascades or disconnection than secondary current instrument transformer 2 and polytropic ratio main current mutual-inductor 1 by Current Transformer Secondary 5A and 1A change over switch 5 and main current mutual-inductor secondary tap switch 8 and secondary wiring of current mutual inductor terminal board 11, Current Transformer Secondary 5A changes the 1A cascade monotropicly is mainly used in polytropic ratio main current mutual-inductor 1 all 5A～2000A/5A no-load voltage ratio than secondary current instrument transformer 2 and is converted to 5A～2000A/1A, has enlarged detection range.The spacing of polytropic ratio main current mutual-inductor 1 and current lifting device 6 is controlled between 100mm～200mm, for no-load voltage ratio below 100A tap L by polytropic ratio main current mutual-inductor 1 the inside
1, L
2, L
3Be connected to corresponding polarity terminal L on the following tap terminal row 9 of 100A of main current mutual-inductor with the secondary tap of current lifting device 6 the insides by accompanying drawing 8 methods
1With nonpolar terminal L
2, L
3On, detect 20A of current transformer ratio like this when following, two 7.5 rice noodles (35mm
2/ root) one meets polar end L respectively
1With non-polar end L
3On the corresponding terminal, L
1The other end is corresponding to link together L with tested current transformer polar end once
3The other end is corresponding to link together with tested current transformer non-polar end once, has formed the once closed test loop that detects like this.Main current mutual-inductor secondary tap switch 8 switches the secondary tap equally according to tested current transformer ratio makes its no-load voltage ratio unanimity, presses national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " by the external secondary line group 25 of secondary wiring of current mutual inductor terminal board 11 Current Transformer and inserts analog current load box and mutual-inductor tester and tested Current Transformer Secondary formation secondary closure error of measurement comparison loop.When detecting 25A of current transformer ratio～100A, two 7.5 rice noodles (35mm
2/ root) one meets polar end L respectively
1With non-polar end L
2On the corresponding terminal, L
1The other end is corresponding to link together L with tested current transformer polar end once
2The other end is corresponding to link together with tested current transformer non-polar end once, has formed the once closed test loop that detects like this.Main current mutual-inductor secondary tap switch 8 switches the secondary tap equally according to tested current transformer ratio makes its no-load voltage ratio unanimity, presses national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " by the external secondary line group 25 of secondary wiring of current mutual inductor terminal board 11 Current Transformer and inserts analog current load box and mutual-inductor tester and tested Current Transformer Secondary formation secondary closure error of measurement comparison loop; When detecting 150A to the current transformer of 400A no-load voltage ratio, the feedthrough hole of the feedthrough hole of polytropic ratio main current mutual-inductor 1 and current lifting device 6 forms threeway feedthrough hole integral structure, two 7.5 rice noodles (35mm by the hole of passing through on the front panel 4
2/ root) use line as standby external primary line 23 of current transformer and the standby external secondary line 24 of current lifting device respectively, these two leads are its length of multiply annealed copper wire and are 7.5 meters, and their cross section is 35mm
2One end of the standby external lead 23 of current transformer and the polar end of tested current transformer link together, the other end passes feedthrough hole polar end in the polytropic ratio main current mutual-inductor 1 earlier to non-polar end, then by be provided with on the front panel 4 pass through the hole in polytropic ratio main current mutual-inductor 1 according to using corresponding terminal L on the following tap terminal row 9 of 100A of main current mutual-inductor with an end of current lifting device 6 standby external secondary leads 24 behind circulation punching two to four circles in the different feedthrough hole of tested current transformer ratio
1, L
2, L
3In any terminal be fastenedly connected it be serially connected, the other end of current lifting device 6 standby external secondary leads 24 passes pass through hole feedthrough hole in current lifting device 6 in punching 6～9 circles of feedthrough hole by being provided with on the front panel 4 in the current lifting device 6, be connected with the non-polar end of tested current transformer then, thereby form the once closed test loop that detects.Main current mutual-inductor secondary tap switch 8 switches the secondary tap equally according to tested current transformer ratio makes its no-load voltage ratio unanimity, presses national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " by the external secondary line group 25 of secondary wiring of current mutual inductor terminal board 11 Current Transformer and inserts analog current load box and mutual-inductor tester and tested Current Transformer Secondary formation secondary closure error of measurement comparison loop; When detecting 500A to the current transformer of 1000A no-load voltage ratio, two 7.5 rice noodles (35mm
2/ root) as standby external primary line 23 of current transformer and the standby external secondary line 24 usefulness lines of current lifting device and lump together, these two leads are its length of multiply annealed copper wire and are 7.5 meters,, their cross section is 35mm
2Standby external lead 23 of current transformer and current lifting device 6 standby external secondary leads 24 are connected together, one end and the tested current transformer polar end of also wiring are linked together, and the feedthrough hole polar end that the other end of wiring passes earlier in the polytropic ratio main current mutual-inductor 1 is punching one circle to non-polar end, directly pass pass through hole feedthrough hole in current lifting device 6 in punching 6～9 circles of feedthrough hole in the current lifting device 6 again by being provided with on the front panel 4, be connected with the non-polar end of tested current transformer then, thereby form the once closed test loop that detects.Main current mutual-inductor secondary tap switch 8 switches the secondary tap equally according to tested current transformer ratio makes its no-load voltage ratio unanimity, presses national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " by the external secondary line group 25 of secondary wiring of current mutual inductor terminal board 11 Current Transformer and inserts analog current load box and mutual-inductor tester and tested Current Transformer Secondary formation secondary closure error of measurement comparison loop; When detecting the current transformer of a 1200A～2000A/5A no-load voltage ratio, can wear a circle more and wait the ampere-turn method by once detecting for the following instrument transformer of 1000A according to national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " employing if tested current transformer also is a core-theaded type; If tested current transformer is not core-theaded type then advises that dwindling five times according to multiplying power becomes 240A～400A/1A and test; Integrated voltage regulator 14 output a, x by in the voltage regulator with 12 dozens of external application change over switches at interior once input 0～250V power supply signal of using to current lifting device 6, Input terminal block 22 corresponding the accesses in 220V city's electric forming power supplys of voltage regulator 14 are used the pressure regulation input circuits.Use outside with 12 dozens of external application change over switches in the voltage regulator, Input terminal block 22 corresponding 220V city's electric forming power supply external application pressure regulation input circuits that insert of voltage regulator 14, so other configuration standard voltage transformer and stepup transformer etc. can be used for the test site voltage transformer, have increased test function.Above-mentioned finish wiring and confirm can enter test mode.
Embodiment three:
The structure-integrated band voltage regulator of threeway feedthrough hole in the present embodiment is seen accompanying drawing 9 accompanying drawings 10 accompanying drawings 11 accompanying drawings 12 accompanying drawings 13 from up-flow standard current transformer integrating device, comprise polytropic ratio main current mutual-inductor 1, Current Transformer Secondary 5A changes the monotropic than secondary current instrument transformer 2 of 1A cascade, top panel 3, front panel 4, Current Transformer Secondary 5A and 1A change over switch 5, current lifting device 6, shell 7, main current mutual-inductor secondary tap switch 8, the following tap terminal row 9 of 100A of main current mutual-inductor, use external application change over switch 12, voltage regulator external application connecting terminal block 13 in the secondary wiring of current mutual inductor terminal board 11, voltage regulator, voltage regulator 14, voltage regulator output monitoring form 15, mutual-inductor tester 16, analog current load box 17, high voltage induction alarm 18, pull bar assembly 19 moves wheel 20, analog current load box connecting terminal block 21, voltage regulator Input terminal block 22, the standby external primary line 23 of current transformer, the standby external secondary line 24 of current lifting device, the external secondary line group 25 of current transformer.Its inner setting also has clamp system, the punching sleeve pipe, clamp system is located at shell 7 the insides, the punching sleeve pipe cooperate with clamp system also be located at the inside, left side in the monotropic frame that is fixed on shell 7 than secondary current instrument transformer 2 that three clamp systems change the 1A cascade to polytropic ratio main current mutual-inductor 1 summation current transformer secondary 5A respectively, current lifting device 6 is fixed on right side in the frame of shell 7, top panel 3 is fixed on top by the handgrip of both sides, shell 7 top, front panel 4 is fixed on the front of shell 7, Current Transformer Secondary 5A and 1A change over switch 5, main current mutual-inductor secondary tap switch 8, secondary wiring of current mutual inductor terminal board 11, voltage regulator output monitoring form 15, analog current load box connecting terminal block 21 is separately fixed on the top panel 3, the following tap terminal row 9 of 100A of main current mutual-inductor is fixed on the front panel 4, be fixed on shell 7 back lower left quarters with external application change over switch 12 and voltage regulator external application connecting terminal block 13 in the voltage regulator, voltage regulator Input terminal block 22 is fixed on shell 7 back right lower quadrants, voltage regulator 14 is fixed on middle and lower part, shell 7 back, mutual-inductor tester 16 is fixed on middle and upper part, shell 7 back, analog current load box 17 is fixed on middle and upper part, shell 7 the inside, high voltage induction alarm 18 is fixed on shell 7 forward, central part, and pull bar assembly 19 and mobile wheel 20 are fixed on shell 7 rear sides.Current Transformer Secondary 5A changes the 1A cascade monotropicly presses accompanying drawing 13 cascades or disconnection than secondary current instrument transformer 2 and polytropic ratio main current mutual-inductor 1 by Current Transformer Secondary 5A and 1A change over switch 5 and main current mutual-inductor secondary tap switch 8 and secondary wiring of current mutual inductor terminal board 11, Current Transformer Secondary 5A changes the 1A cascade monotropicly is mainly used in polytropic ratio main current mutual-inductor 1 all 5A～2000A/5A no-load voltage ratio than secondary current instrument transformer 2 and is converted to 5A～2000A/1A, has enlarged detection range.The spacing of polytropic ratio main current mutual-inductor 1 and current lifting device 6 is controlled between 100mm～200mm, for no-load voltage ratio below 100A tap L by polytropic ratio main current mutual-inductor 1 the inside
1, L
2, L
3Be connected to corresponding polarity terminal L on the following tap terminal row 9 of 100A of main current mutual-inductor with the secondary tap of current lifting device 6 the insides by accompanying drawing 13 methods
1With nonpolar terminal L
2, L
3On, detect 20A of current transformer ratio like this when following, two 7.5 rice noodles (35mm
2/ root) one meets polar end L respectively
1With non-polar end L
3On the corresponding terminal, L
1The other end is corresponding to link together L with tested current transformer polar end once
3The other end is corresponding to link together with tested current transformer non-polar end once, has formed the once closed test loop that detects like this.Main current mutual-inductor secondary tap switch 8 switches the secondary tap equally according to tested current transformer ratio makes its no-load voltage ratio unanimity, presses national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " by secondary wiring of current mutual inductor terminal board 11 and the external secondary line group 25 of analog current load box connecting terminal block 21 Current Transformer and inserts integrated analog current load box 17 and integrated mutual-inductor tester 16 and tested Current Transformer Secondary formation secondary closure error of measurement comparison loop.When detecting 25A of current transformer ratio～100A, two 7.5 rice noodles (35mm
2/ root) one meets polar end L respectively
1With non-polar end L
2On the corresponding terminal, L
1The other end is corresponding to link together L with tested current transformer polar end once
2The other end is corresponding to link together with tested current transformer non-polar end once, has formed the once closed test loop that detects like this.Main current mutual-inductor secondary tap switch 8 switches the secondary tap equally according to tested current transformer ratio makes its no-load voltage ratio unanimity, presses national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " by secondary wiring of current mutual inductor terminal board 11 and the external secondary line group 25 of analog current load box connecting terminal block 21 Current Transformer and inserts integrated analog current load box 17 and integrated mutual-inductor tester 16 and tested Current Transformer Secondary formation secondary closure error of measurement comparison loop; When detecting 150A to the current transformer of 400A no-load voltage ratio, the feedthrough hole of the feedthrough hole of polytropic ratio main current mutual-inductor 1 and current lifting device 6 forms threeway feedthrough hole integral structure, two 7.5 rice noodles (35mm by the hole of passing through on the front panel 4
2/ root) use line as standby external primary line 23 of current transformer and the standby external secondary line 24 of current lifting device respectively, these two leads are its length of multiply annealed copper wire and are 7.5 meters, and their cross section is 35mm
2One end of the standby external lead 23 of current transformer and the polar end of tested current transformer link together, the other end passes feedthrough hole polar end in the polytropic ratio main current mutual-inductor 1 earlier to non-polar end, then by be provided with on the front panel 4 pass through the hole in polytropic ratio main current mutual-inductor 1 according to using corresponding terminal L on the following tap terminal row 9 of 100A of main current mutual-inductor with an end of current lifting device 6 standby external secondary leads 24 behind circulation punching two to four circles in the different feedthrough hole of tested current transformer ratio
1, L
2, L
3In any terminal be fastenedly connected it be serially connected, the other end of current lifting device 6 standby external secondary leads 24 passes pass through hole feedthrough hole in current lifting device 6 in punching 6～9 circles of feedthrough hole by being provided with on the front panel 4 in the current lifting device 6, be connected with the non-polar end of tested current transformer then, thereby form the once closed test loop that detects.Main current mutual-inductor secondary tap switch 8 switches the secondary tap equally according to tested current transformer ratio makes its no-load voltage ratio unanimity, presses national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " by secondary wiring of current mutual inductor terminal board 11 and the external secondary line group 25 of analog current load box connecting terminal block 21 Current Transformer and inserts integrated analog current load box 17 and integrated mutual-inductor tester 16 and tested Current Transformer Secondary formation secondary closure error of measurement comparison loop; When detecting 500A to the current transformer of 1000A no-load voltage ratio, two 7.5 rice noodles (35mm2/ root) are as standby external primary line 23 of current transformer and the standby external secondary line 24 usefulness lines of current lifting device and lump together, these two leads are its length of multiply annealed copper wire and are 7.5 meters, and their cross section is 35mm
2Standby external lead 23 of current transformer and current lifting device 6 standby external secondary leads 24 are connected together, one end and the tested current transformer polar end of also wiring are linked together, and the feedthrough hole polar end that the other end of wiring passes earlier in the polytropic ratio main current mutual-inductor 1 is punching one circle to non-polar end, directly pass pass through hole feedthrough hole in current lifting device 6 in punching 6～9 circles of feedthrough hole in the current lifting device 6 again by being provided with on the front panel 4, be connected with the non-polar end of tested current transformer then, thereby form the once closed test loop that detects.Main current mutual-inductor secondary tap switch 8 switches the secondary tap equally according to tested current transformer ratio makes its no-load voltage ratio unanimity, presses national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " by secondary wiring of current mutual inductor terminal board 11 and the external secondary line group 25 of analog current load box connecting terminal block 21 Current Transformer and inserts integrated analog current load box 17 and integrated mutual-inductor tester 16 and tested Current Transformer Secondary formation secondary closure error of measurement comparison loop; When detecting the current transformer of a 1200A～2000A/5A no-load voltage ratio, can wear a circle more and wait the ampere-turn method by once detecting for the following instrument transformer of 1000A according to national metrological verification regulations " JJG1021-2007 electric power mutual-inductor " employing if tested current transformer also is a core-theaded type; If tested current transformer is not core-theaded type then advises that dwindling five times according to multiplying power becomes 240A～400A/1A and test; Integrated voltage regulator 14 output a, x by in the voltage regulator with 12 dozens of external application change over switches at interior once input 0～250V power supply signal of using to current lifting device 6, Input terminal block 22 corresponding the accesses in 220V city's electric forming power supplys of voltage regulator 14 are used the pressure regulation input circuits.Use outside with 12 dozens of external application change over switches in the voltage regulator, Input terminal block 22 corresponding 220V city's electric forming power supply external application pressure regulation input circuits that insert of voltage regulator 14, so other configuration standard voltage transformer and stepup transformer etc. can be used for the test site voltage transformer, have increased test function.Above-mentioned finish wiring and confirm shift pull bar in the pull bar assembly 19 onto bottom location, device leans forward 10 °, moves to take turns 20 and lift and can enter comfortable man-machine test mode as shown in Figure 12.Pull bar is moved topmost the location to and is moved wheel 20 and land the displacement of can walking, convenient on-the-spot detection in turn in the pull bar assembly 19.Whether high voltage induction alarm 18 is installed is to have high-tension electricity to exist around reminding the operating personnel scene, protection people and device safety.
[0030] operation principle of the present invention is: according to the no-load voltage ratio difference of the on-the-spot tested current transformer in critical point, the external secondary line group of Current Transformer 25 connects simulation current loading casees and mutual-inductor tester (embodiment three all integrated then in advance externally connect) and directly is connected tested current transformer with two special wires again and forms secondary closure error of measurement comparison loop, and Current Transformer secondary 5A and 1A change over switch 5 and main current mutual-inductor secondary tap switch 8 are according to the secondary gear of tested current transformer ratio selection affirmation current transformer ratio.With two 7.5 rice noodles (35mm
2/ root) primary circuit of connection polytropic ratio main current mutual-inductor 1 and current lifting device 6 and tested current transformer forms once closed test loop.Voltage regulator is connected with the mains output voltage to current lifting device 6 once, give once closed test loop logical primary current by the electromagnetic induction circuit, produce the signal of telecommunication for secondary closure error of measurement comparison loop by the electromagnetic induction circuit again, computer by mutual-inductor tester the inside carries out data operation and error result is shown then, and storing data automatically can connect the calibration certificate that computer generates standard.
Claims (4)
1. standard current transformer integration apparatus for on-site detection, comprise polytropic ratio main current mutual-inductor (1), Current Transformer Secondary 5A changes the monotropic than secondary current instrument transformer (2) of 1A cascade, top panel (3), front panel (4), Current Transformer Secondary 5A and 1A change over switch (5), current lifting device (6), shell (7), the secondary tap switch (8) of polytropic ratio main current mutual-inductor (1), the following tap terminal row of a 100A of polytropic ratio main current mutual-inductor (1) (9), a terminal board (10) of current lifting device (6), the secondary connection terminal board (11) of polytropic ratio current transformer (1), it is characterized in that: described polytropic ratio main current mutual-inductor (1) summation current transformer secondary 5A changes the monotropic left side that is fixedly installed on the frame in the shell (7) than secondary current instrument transformer (2) of 1A cascade, described current lifting device (6) is fixedly installed on the right side of the frame in the shell (7), feedthrough hole in feedthrough hole in the polytropic ratio main current mutual-inductor (1) and the current lifting device (6) is oppositely arranged, and the level interval between polytropic ratio main current mutual-inductor (1) and the current lifting device (6) is between 100mm～200mm, the front panel (4) that is provided with between polytropic ratio main current mutual-inductor (1) and the current lifting device (6) is provided with one and passes through the hole, thereby realize the feedthrough hole in the polytropic ratio main current mutual-inductor (1), feedthrough hole in the current lifting device (6) and front panel (4) are gone up the Kong Sankong that passes through that is provided with and are communicated, and have formed the feedthrough hole of on-the-spot detection with standard current transformer, pass through the Kong Sankong integral structure that communicates on the feedthrough hole of current lifting device and the front panel (4).
2. standard current transformer integration apparatus for on-site detection according to claim 1, it is characterized in that: this device is provided with standby external lead of current transformer (23) and the standby external secondary lead of current lifting device (24), these two leads are the multiply annealed copper wire, the length of the standby external secondary lead of standby external lead of current transformer (23) and current lifting device (24) is 7.5～8 meters, and their cross section is 35mm
2One end of the standby external lead of current transformer (23) and the polar end of tested current transformer link together, the feedthrough hole polar end that the other end passes earlier in the polytropic ratio main current mutual-inductor (1) is serially connected with an end of the standby external secondary lead of current lifting device (6) (24) by passing through in the feedthrough hole of hole in polytropic ratio main current mutual-inductor (1) behind circulation punching two to four circles of go up being provided with of front panel (4) then to non-polar end, the feedthrough hole that the other end of the standby external secondary lead of current lifting device (6) (24) passes in the current lifting device (6) is gone up punching 6～9 circles in the feedthrough hole of hole in current lifting device (6) that pass through that are provided with by front panel (4), be connected with the non-polar end of tested current transformer then, thereby form the once closed test loop that detects.
3. standard current transformer integration apparatus for on-site detection according to claim 1, it is characterized in that: this device is provided with standby external lead of current transformer (23) and the standby external secondary lead of current lifting device (24), these two leads are its length of multiply annealed copper wire and are 7.5～8 meters, and the cross section of these two leads is 35mm
2Standby external lead of current transformer (23) and the standby external secondary lead of current lifting device (6) (24) are connected together, with and the end and the tested current transformer polar end that connect link together, and the feedthrough hole polar end that the other end that connects passes earlier in the polytropic ratio main current mutual-inductor (1) is punching one circle to non-polar end, the feedthrough hole that directly passes again in the current lifting device (6) is gone up punching 6～9 circles in the feedthrough hole of hole in current lifting device (6) that pass through that are provided with by front panel (4), be connected with the non-polar end of tested current transformer then, thereby form the once closed test loop that detects.
4. according to claim 1 or 2 or 3 described standard current transformer integration apparatus for on-site detection, it is characterized in that: in described shell (7), also be integrated with voltage regulator (14).
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| CN102393477A (en) * | 2011-11-03 | 2012-03-28 | 四川电力科学研究院 | Integration wiring apparatus used for high voltage three-phase combination mutual inductor on-site detection |
| CN109407036B (en) * | 2018-12-29 | 2023-12-15 | 太原山互科技有限公司 | Full-automatic calibrating device of batch current transformer based on PLC control |
| CN112327016A (en) * | 2020-11-05 | 2021-02-05 | 国网湖北省电力有限公司宜昌供电公司 | Current transformer test wire box |
| CN112735755B (en) * | 2020-12-07 | 2021-10-01 | 云南电网有限责任公司 | High-precision multi-transformation-ratio standard current transformer working for long time at 150% rated current |
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