CN115902355A - Current measuring device of neutral point arc suppression coil grounding system - Google Patents
Current measuring device of neutral point arc suppression coil grounding system Download PDFInfo
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- CN115902355A CN115902355A CN202310168542.9A CN202310168542A CN115902355A CN 115902355 A CN115902355 A CN 115902355A CN 202310168542 A CN202310168542 A CN 202310168542A CN 115902355 A CN115902355 A CN 115902355A
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- cable
- neutral point
- clamping plate
- adjusting
- arc suppression
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
The invention relates to the technical field of current measurement, in particular to a current measuring device of a neutral point grounding system with an arc suppression coil, which comprises a shell arranged in the arc suppression coil grounding system, wherein a supporting frame is arranged on the inner wall of the shell, a mounting bracket is connected in the supporting frame, a plurality of measuring substrates are arranged on the mounting bracket, a limiting block is connected on the back side of each measuring substrate, a limiting groove is arranged on the mounting bracket in a penetrating manner, the limiting block is arranged in the limiting groove in a matching and sliding manner, adjusting brackets are connected on two sides of the mounting bracket, and adjusting clamping components are arranged in the adjusting brackets and clamp the limiting blocks. According to the invention, the adjustment and switching of the locking and the active state of the limiting block are realized by utilizing the adjusting and clamping assembly, so that the measuring position can be adjusted according to the wire inlet direction of a wire inlet cable, the cable does not need to be pulled during current measurement, the cable is arranged neatly, and the adjusting process of the current measuring position is greatly simplified.
Description
Technical Field
The invention relates to the technical field of current measurement, in particular to a current measuring device of a neutral point arc suppression coil grounding system.
Background
With the development of an electric power system, more and more cable circuits are adopted by a power distribution network, the increase of the cable circuits leads to the rapid increase of system capacitance current, and the continuous increase of the capacitance current in an ungrounded neutral point operation mode brings serious influence on the equipment insulation safety and protection equipment. In order to prevent the generation of electric arcs, especially intermittent electric arcs, when ground faults occur, an arc suppression coil grounding mode is adopted, namely, the arc suppression coil is connected to a neutral point of a transformer or a generator to reduce grounding current, and the grounding device has good protection effects on the aspects of improving power supply reliability, insulating level of electrical equipment and circuits, reducing interference on a communication system and the like.
Current arc suppression coil earthing device is when carrying out current measurement, electric measuring instrument is generally direct through the bolt fastening, then will await measuring cable traction stay cord to measuring position, because adopt multichannel cable junction between arc suppression coil unit and the transformer unit, need carry out current measurement to every group cable, the tractive cable carries out the mode of measuring and leads to the cable to arrange in a jumble easily, simultaneously when the cable is difficult to carry out the tractive, need pull down the bolt and look for suitable fixed point position again and be used for fixed electric measuring instrument, measuring position's adjustment process is more loaded down with trivial details.
Disclosure of Invention
The invention aims to provide a current measuring device of a system with a neutral point grounded through an arc suppression coil, and aims to solve the technical problem.
The purpose of the invention can be realized by the following technical scheme:
a neutral point is through arc suppression coil grounding system current measuring device, including the body that sets up in the arc suppression coil grounding system, the inboard wall mounting of said body has braced frames, the said braced frame is connected with the mounting bracket, install several measurement base plates on the said mounting bracket, the dorsal part of the said measurement base plate connects with the stopper, run through and have spacing grooves on the said mounting bracket, the said stopper adaptation is slipped and mounted in spacing groove, both sides of the said mounting bracket connect with the regulating support, there are regulating clamping assemblies in the said regulating support, the said regulating clamping assembly grasps the spacing movement to the stopper; the utility model discloses a cable of measuring instrument, including measuring base plate, casing, cable hole site coaxial arrangement, measuring base plate, casing internally mounted has current acquisition terminal and measurement ammeter, current acquisition terminal realizes the current measurement of inlet wire cable with current transformer and measurement ammeter electric connection respectively, last fixedly connected with current transformer, binding post and the bunch ware of having in proper order of measuring base plate, the coaxial setting of cable hole site on current transformer, binding post and the bunch ware, wear to be equipped with the inlet wire cable in the current transformer, casing internally mounted has current acquisition terminal and measurement ammeter.
Through above technical scheme, the cooperation movable mounting that the measurement base plate passes through stopper and spacing groove is on the installing support, and the regulation clamping components who is located the installing support both sides can realize carrying out spacing clamp to the stopper and press from both sides tightly, before carrying out current measurement, it unclamps the stopper to adjust clamping components, make the measurement base plate can be along spacing groove rectilinear movement on the installing support, thereby can adjust measuring position according to the inlet wire direction of inlet wire cable, avoid drawing the cable and draw, after the measurement base plate aligns with the inlet wire cable that corresponds, it will lock fixedly to the stopper to adjust clamping components, the inlet wire cable passes current transformer, current transformer is connected with the input at current acquisition terminal simultaneously, current acquisition terminal's output is connected with the measurement ammeter, be used for carrying out current measurement to the inlet wire cable.
As a further scheme of the invention: adjust clamping component and include adjusting screw, remove seat, actuating lever and connecting rod, adjusting screw's one end and regulation support normal running fit, adjusting screw's other end screw thread runs through and removes the seat and rotate with the bearing frame and be connected, the actuating lever symmetry sets up in adjusting screw's upper and lower both sides, the actuating lever rotates through the support pivot and installs on adjusting the support, the one end of connecting rod with remove the seat and rotate and be connected, the other end and the actuating lever rotation of connecting rod are connected.
Through above technical scheme, rotate adjusting screw and can drive and remove the seat and carry out rectilinear movement along adjusting screw's axis direction, remove the seat and drive the actuating lever through the connecting rod and swing, when the antiport adjusting screw, remove seat and actuating lever also with reverse motion, adjustment process convenient and fast.
As a further scheme of the invention: the adjusting and clamping assembly further comprises a first clamping plate and a second clamping plate, the first clamping plate is symmetrically arranged on the upper side and the lower side of the limiting block, two ends of the first clamping plate are fixedly connected with the driving rods on two sides respectively, one side of the moving seat is connected with a push rod, and two ends of the second clamping plate are fixedly connected with the corresponding push rods respectively.
Through above technical scheme, the swing process of actuating lever can drive the relative motion of the first pinch-off blades of both sides about, and the linear displacement process of removing the seat can drive the second pinch-off blades and carry out linear motion in step.
As a further scheme of the invention: the mounting bracket both sides are equipped with the spout along removing the seat direction of motion through, push rod adaptation slidable mounting is in the spout.
Through above technical scheme, the spout not only provides the activity space for the linear displacement process of push rod, can also carry out spacing direction to the push rod simultaneously, guarantees the direction accuracy of push rod displacement in-process.
As a further scheme of the invention: the clamping action of the first clamping plate for extruding the limiting block from the upper side and the lower side and the clamping action of the second clamping plate for pressing the limiting block from the side edge are simultaneously carried out.
Through above technical scheme, when the actuating lever drove the first clamp plate of both sides about the drive and pressed and leaned on at the upper and lower both ends of stopper, remove the seat and drive the second clamp plate and just in time lean on the lateral wall of stopper, continue to rotate adjusting screw this moment, first clamp plate and second clamp plate will exert the extrusion effort to the stopper simultaneously to realize that trilateral centre gripping of stopper is fixed, improved the centre gripping steadiness of stopper.
As a further scheme of the invention: and anti-skid particles are arranged on one sides of the first clamping plate and the second clamping plate towards the limiting block.
Through above technical scheme, the frictional force between first clamp plate and second clamp plate and the stopper contact surface can effectively be increased to the antiskid granule to improve the centre gripping effect.
As a further scheme of the invention: the last mounting groove that is provided with of installing support, the dorsal part of measuring the base plate is provided with the connecting piece, the connecting piece hooks in the mounting groove, it depends on through the connecting piece and installs on measuring the base plate to measure the base plate.
Through above technical scheme, utilize the connecting piece to make things convenient for the measurement base plate to install on the installing support fast, when the adjustment was measured the base plate position, the connecting piece removed in the mounting groove simultaneously, kept the stability of measuring the base plate all the time firmly.
As a further scheme of the invention: the transformer cable penetrates through the wire harness, the incoming cable is connected with the transformer cable through the wiring terminal, and the shell is provided with cable through holes corresponding to the incoming cable and the transformer cable respectively.
Through the technical scheme, the wire inlet direction of the transformer cable is restricted by the wire harness device and is aligned with the wire inlet cable, so that the wiring process of the wire inlet cable and the transformer cable on the wiring terminal is facilitated.
The invention has the beneficial effects that: according to the invention, the measuring substrate is movably arranged on the mounting bracket through the matching of the limiting block and the limiting groove, the limiting block can be limited and clamped by the adjusting and clamping components on the two sides, before current measurement is carried out, the limiting block is loosened by the adjusting and clamping components, so that the measuring substrate can linearly move on the mounting bracket along the limiting groove, the measuring position can be adjusted according to the wire inlet direction of a wire inlet cable, the adjusting process is simple and quick, the cable is prevented from being pulled and drawn, the wire inlet cable is neatly arranged, after the measuring substrate is aligned with the corresponding wire inlet cable, the limiting block is locked and fixed by the adjusting and clamping components, the wire inlet cable penetrates through the current transformer, the current transformer is connected with the input end of the current acquisition terminal, and the output end of the current acquisition terminal is connected with the metering ammeter and is used for carrying out current measurement on the wire inlet cable.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the construction of the support frame of the present invention;
FIG. 3 is a schematic view of the back side of the mounting bracket of the present invention;
FIG. 4 is a schematic view of the structure of a measurement substrate according to the present invention;
FIG. 5 is a schematic view of the structure of the adjusting bracket of the present invention;
FIG. 6 is a schematic view of the structure of the adjustable clamp assembly of the present invention.
In the figure: 1. a housing; 2. a support frame; 3. mounting a bracket; 301. a limiting groove; 302. mounting grooves; 303. a chute; 4. measuring the substrate; 401. a limiting block; 402. a connecting member; 5. adjusting the bracket; 6. adjusting the clamping assembly; 601. adjusting the screw rod; 602. a movable seat; 603. a drive rod; 604. a connecting rod; 605. a bearing seat; 606. a support shaft; 607. a first clamping plate; 608. a second clamping plate; 609. a push rod; 7. a current transformer; 8. a wiring terminal; 9. a wire harness; 10. a wire inlet cable; 11. a current collection terminal; 12. a metering ammeter; 13. a transformer cable.
Detailed description of the preferred embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the invention relates to a current measuring device of a neutral point arc suppression coil grounding system, which comprises a shell 1 arranged in an arc suppression coil grounding system, wherein a supporting frame 2 is arranged on the inner wall of the shell 1, a mounting bracket 3 is connected in the supporting frame 2, a plurality of measuring substrates 4 are arranged on the mounting bracket 3, a limiting block 401 is connected to the back side of each measuring substrate 4, a limiting groove 301 is arranged on the mounting bracket 3 in a penetrating manner, the limiting block 401 is arranged in the limiting groove 301 in a sliding manner in an adaptive manner, adjusting brackets 5 are connected to two sides of the mounting bracket 3, an adjusting clamping assembly 6 is arranged in each adjusting bracket 5, and the adjusting clamping assembly 6 is used for clamping and limiting the limiting block 401; the measuring substrate 4 is sequentially and fixedly connected with a current transformer 7, a wiring terminal 8 and a wiring harness 9, cable holes on the current transformer 7, the wiring terminal 8 and the wiring harness 9 are coaxially arranged, a wire inlet cable 10 is arranged in the current transformer 7 in a penetrating mode, a current collecting terminal 11 and a metering ammeter 12 are arranged in the shell 1, and the current collecting terminal 11 is respectively electrically connected with the current transformer 7 and the metering ammeter 12 to realize current measurement of the wire inlet cable 10.
Wherein, the measurement substrate 4 is movably mounted on the mounting bracket 3 through the cooperation of the limiting block 401 and the limiting groove 301, and the adjusting and clamping assembly 6 located on both sides of the mounting bracket 3 can realize the limiting and clamping of the limiting block 401, before the current measurement is performed, the adjusting and clamping assembly 6 loosens the limiting block 401, so that the measurement substrate 4 can linearly move along the limiting groove 301 on the mounting bracket 3, thereby the measurement position can be adjusted according to the incoming line direction of the incoming line cable 10, the cable is prevented from being pulled and pulled, after the measurement substrate 4 is aligned with the corresponding incoming line cable 10, the adjusting and clamping assembly 6 locks and fixes the limiting block 401, the incoming line cable 10 passes through the current transformer 7, meanwhile, the current transformer 7 is connected with the input end of the current collection terminal 11, the output end of the current collection terminal 11 is connected with the metering ammeter 12, and is used for performing the current measurement on the incoming line cable 10.
As shown in fig. 5 and 6, the adjusting and clamping assembly 6 includes an adjusting screw 601, a moving seat 602, a driving rod 603 and a connecting rod 604, one end of the adjusting screw 601 is rotatably fitted to the adjusting bracket 5, the other end of the adjusting screw 601 penetrates through the moving seat 602 and is rotatably connected to a bearing seat 605, the driving rods 603 are symmetrically disposed on the upper and lower sides of the adjusting screw 601, the driving rod 603 is rotatably mounted on the adjusting bracket 5 through a supporting rotating shaft 606, one end of the connecting rod 604 is rotatably connected to the moving seat 602, and the other end of the connecting rod 604 is rotatably connected to the driving rod 603.
Wherein, rotating adjusting screw 601 and can driving and remove seat 602 and carry out rectilinear movement along adjusting screw 601's axis direction, remove seat 602 and drive actuating lever 603 through connecting rod 604 and swing, when the rotation adjusting screw 601 of reversal, remove seat 602 and actuating lever 603 and also will reverse motion, adjustment process convenient and fast.
Specifically, the adjusting and clamping assembly 6 further includes a first clamping plate 607 and a second clamping plate 608, the first clamping plate 607 is symmetrically disposed on the upper and lower sides of the limiting block 401, two ends of the first clamping plate 607 are respectively fixedly connected to the driving rods 603 on the two sides, one side of the movable base 602 is connected to a push rod 609, and two ends of the second clamping plate 608 are respectively fixedly connected to the corresponding push rod 609. The swing process of the driving rod 603 can drive the first clamping plates 607 at the upper and lower sides to move oppositely, and the linear displacement process of the movable base 602 can drive the second clamping plate 608 to synchronously perform linear motion.
More specifically, the two sides of the mounting bracket 3 are provided with a sliding groove 303 along the moving direction of the moving seat 602, and the push rod 609 is slidably mounted in the sliding groove 303. The sliding groove 303 not only provides a moving space for the linear displacement process of the push rod 609, but also can limit and guide the push rod 609, so that the direction accuracy of the push rod 609 in the displacement process is ensured.
More specifically, the clamping action of the first clamping plate 607 pressing the stopper 401 from both the upper and lower sides is performed simultaneously with the clamping action of the second clamping plate 608 pressing the stopper 401 from the side.
Wherein, when the driving rod 603 drives the first clamping plate 607 of upper and lower both sides to press against the upper and lower both ends of stopper 401, remove the seat 602 and drive the second clamping plate 608 and just in time lean on the lateral wall of stopper 401, continue to rotate adjusting screw 601 this moment, first clamping plate 607 and second clamping plate 608 will exert the extrusion effort to stopper 401 simultaneously to realize that the trilateral centre gripping of stopper 401 is fixed, improved the centre gripping steadiness of stopper 401.
More specifically, the first clamping plate 607 and the second clamping plate 608 are provided with anti-slip particles on the sides facing the limiting block 401. The anti-slip particles can effectively increase the friction force between the contact surfaces of the first clamping plate 607 and the second clamping plate 608 and the limiting block 401, so that the clamping effect is improved.
As shown in fig. 4, mounting bracket 3 is provided with mounting groove 302, and the back side of measurement substrate 4 is provided with connector 402, and connector 402 is hooked in mounting groove 302, and measurement substrate 4 is hung on and mounted on measurement substrate 4 via connector 402. Utilize connecting piece 402 to conveniently measure base plate 4 and can install on installing support 3 fast, when the adjustment was measured base plate 4 position, connecting piece 402 removed in mounting groove 302 simultaneously, kept measuring base plate 4's stable firm throughout. The connecting member 402 in this embodiment is a steel plate bending sheet metal member.
As shown in fig. 1, a transformer cable 13 is inserted into the wire harness 9, the incoming cable 10 and the transformer cable 13 are connected through the connection terminal 8, and the housing 1 is provided with cable through holes corresponding to the incoming cable 10 and the transformer cable 13, respectively. The wire inlet direction of the transformer cable 13 is restricted by the wire harness 9 and is aligned with the wire inlet cable 10, so that the wire inlet cable 10 and the transformer cable 13 can be conveniently connected on the wiring terminal 8.
The working principle of the invention is as follows: during the use, install measuring substrate 4 on installing support 3 through connecting piece 402, inlet wire cable 10 lets in casing 1 and prepares to carry out current measurement, adjust the measuring position of measuring substrate 4 on installing support 3 according to the inlet wire direction of inlet wire cable 10, thereby need not to pull and draw inlet wire cable 10, after measuring substrate 4 aligns with corresponding inlet wire cable 10, rotate adjusting screw 601, drive and remove seat 602 and carry out rectilinear movement along adjusting screw 601's axis direction, remove seat 602 and drive actuating lever 603 through connecting rod 604 and swing simultaneously, when actuating lever 603 drives the upper and lower both sides first clamp plate 607 and presses the upper and lower both ends of stopper 401, it just leans on the lateral wall of stopper 401 just to remove seat 602, continue to rotate adjusting screw 601 this moment, first clamp plate 607 and second clamp plate 608 will exert the extrusion effort to stopper 401 simultaneously, thereby realize that trilateral centre gripping of stopper 401 is fixed, then pass through current transformer 7 with inlet wire cable 10, utilize current acquisition terminal 11 and measurement ammeter 12 to carry out current measurement to inlet wire cable 10.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (8)
1. The neutral point is through casing (1) among arc suppression coil ground system, its characterized in that, install braced frame (2) on casing (1) inner wall, braced frame (2) in-connection has installing support (3), install a plurality of measuring substrate (4) on installing support (3), the dorsal part of measuring substrate (4) is connected with stopper (401), it is equipped with spacing groove (301) to run through on installing support (3), stopper (401) adaptation slidable mounting is in spacing groove (301), the both sides of installing support (3) are connected with regulation support (5), be provided with in the regulation support (5) and adjust clamping component (6), adjust clamping component (6) and carry out the spacing action of centre gripping to stopper (401); measure on base plate (4) fixedly connected with current transformer (7), binding post (8) and bunch ware (9) in proper order, the coaxial setting of cable hole site on current transformer (7), binding post (8) and bunch ware (9), inlet wire cable (10) wear to be equipped with in current transformer (7), casing (1) internally mounted has current acquisition terminal (11) and measurement ammeter (12), current acquisition terminal (11) realize the current measurement of inlet wire cable (10) with current transformer (7) and measurement ammeter (12) electric connection respectively.
2. The neutral point arc suppression coil grounding system current measuring device according to claim 1, wherein the adjusting clamping assembly (6) comprises an adjusting screw rod (601), a moving seat (602), a driving rod (603) and a connecting rod (604), one end of the adjusting screw rod (601) is rotatably matched with the adjusting bracket (5), the other end of the adjusting screw rod (601) penetrates through the moving seat (602) in a threaded manner and is rotatably connected with a bearing seat (605), the driving rod (603) is symmetrically arranged on the upper side and the lower side of the adjusting screw rod (601), the driving rod (603) is rotatably mounted on the adjusting bracket (5) through a supporting rotating shaft (606), one end of the connecting rod (604) is rotatably connected with the moving seat (602), and the other end of the connecting rod (604) is rotatably connected with the driving rod (603).
3. The current measuring device of a neutral point arc suppression coil grounding system according to claim 2, wherein the adjusting clamping assembly (6) further comprises a first clamping plate (607) and a second clamping plate (608), the first clamping plate (607) is symmetrically arranged on the upper side and the lower side of the limiting block (401), two ends of the first clamping plate (607) are respectively and fixedly connected with the driving rods (603) on the two sides, one side of the moving seat (602) is connected with a push rod (609), and two ends of the second clamping plate (608) are respectively and fixedly connected with the corresponding push rod (609).
4. A neutral point over arc suppression coil grounding system current measuring device as claimed in claim 3, wherein sliding grooves (303) are arranged on two sides of the mounting support (3) in a penetrating manner along the moving direction of the moving seat (602), and the push rod (609) is slidably mounted in the sliding grooves (303) in a matching manner.
5. A neutral point crowned coil grounding system current measuring device as claimed in claim 4, characterized in that the clamping action of the first clamping plate (607) pressing the stopper (401) from both the upper and lower sides is performed simultaneously with the clamping action of the second clamping plate (608) pressing the stopper (401) from the side.
6. A neutral point over arc suppression coil grounding system current measurement device as claimed in claim 5, wherein the side of the first clamping plate (607) and the second clamping plate (608) facing the limiting block (401) are provided with anti-slip particles.
7. A neutral point over arc suppression coil grounding system current measuring device according to claim 1, wherein the mounting bracket (3) is provided with a mounting groove (302), the back side of the measuring substrate (4) is provided with a connecting piece (402), the connecting piece (402) is hooked in the mounting groove (302), and the measuring substrate (4) is hung and mounted on the measuring substrate (4) through the connecting piece (402).
8. A neutral point arc suppression coil grounding system current measuring device as claimed in claim 1, wherein a transformer cable (13) is arranged in the wire harness (9) in a penetrating manner, the incoming cable (10) and the transformer cable (13) are connected through a wiring terminal (8), and a cable through hole corresponding to the incoming cable (10) and the transformer cable (13) is formed in the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310168542.9A CN115902355B (en) | 2023-02-27 | 2023-02-27 | Neutral point is through arc suppression coil earthing system current measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310168542.9A CN115902355B (en) | 2023-02-27 | 2023-02-27 | Neutral point is through arc suppression coil earthing system current measurement device |
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| Publication Number | Publication Date |
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| CN115902355A true CN115902355A (en) | 2023-04-04 |
| CN115902355B CN115902355B (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310168542.9A Active CN115902355B (en) | 2023-02-27 | 2023-02-27 | Neutral point is through arc suppression coil earthing system current measurement device |
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| CN (1) | CN115902355B (en) |
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| CN217035381U (en) * | 2021-12-01 | 2022-07-22 | 河北中互互感器有限公司 | Current transformer for metering |
| CN115436720A (en) * | 2022-08-12 | 2022-12-06 | 国网山东省电力公司诸城市供电公司 | Live display distribution box detection device and use method thereof |
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| CA2773562A1 (en) * | 2011-04-11 | 2012-10-11 | Schneider Electric Industries Sas | Device and assembly for measuring an electric current |
| US20120256617A1 (en) * | 2011-04-11 | 2012-10-11 | Schneider Electric Industries Sas | Device and Assembly for Measuring an Electric Current |
| US20150177355A1 (en) * | 2013-12-20 | 2015-06-25 | Industrial Technology Research Institute | Compensating apparatus for a non-contact current sensor installing variation in two wire power cable |
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| Publication number | Publication date |
|---|---|
| CN115902355B (en) | 2023-05-12 |
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