CN213843500U - Magnetic attraction type voltage and current special integrated terminal board capable of checking electric meter on line - Google Patents
Magnetic attraction type voltage and current special integrated terminal board capable of checking electric meter on line Download PDFInfo
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- CN213843500U CN213843500U CN202022715574.0U CN202022715574U CN213843500U CN 213843500 U CN213843500 U CN 213843500U CN 202022715574 U CN202022715574 U CN 202022715574U CN 213843500 U CN213843500 U CN 213843500U
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Abstract
The utility model discloses a magnetic type special integrated terminal board for voltage and current of an online check watt-hour meter, which comprises a magnetic type voltage terminal, a magnetic type current terminal and a magnetic type short connecting piece of the current terminal, wherein when the magnetic type voltage terminal and the magnetic type current terminal are not connected with a test meter, the magnetic type short connecting piece of the current terminal is closed, thereby forming a voltage and current path for normal operation; when the magnetic type voltage terminal and the magnetic type current terminal are connected with the test meter, the magnetic type current terminal short connecting piece is disconnected, so that complete test voltage and current paths are formed to check the watt-hour meter on line. The utility model integrates the magnetic current and voltage terminals into a whole, integrates the normal wiring terminal and the check wiring terminal into a whole, and is convenient for operation wiring; adopt magnetism to inhale formula terminal and magnetism to inhale formula terminal short splicing simultaneously, can the wiring on line, can avoid the productivity reduction that the device that needs under traditional check-up wiring mode parkked and brought, greatly practice thrift the cost.
Description
Technical Field
The utility model relates to an electrical engineering and automatic technical field especially relate to a but special integrated terminal block of formula voltage current is inhaled to magnetism of online calibration kilowatt-hour meter.
Background
In power stations, petrochemical engineering and other projects, some watt-hour meter verification work is frequently encountered, and the related prior art is as follows:
patent document CN1667908A discloses a terminal board unit capable of setting and executing the time for turning on/off the dc power supply and the overcurrent for turning off the dc power supply for each power supply terminal, and displaying the current value/voltage value and reporting the overcurrent, and a control method thereof. It has the following components: input terminals 11 and 12 connected to a current-appropriate power supply device PS; output terminals a1, B1-An, Bn for branching the dc voltage VD supplied from the dc power supply PS and supplying the dc voltage VD and the load currents IL 1-ILn to the loads L1-Ln, respectively; terminal board control means 2 for controlling the on/off timing and off current value of the dc power supply (dc voltage VD) supplied to the plurality of loads (loads L1 to Ln), and for controlling the display of the current value/voltage value and the notification of the overcurrent.
Patent document CNI11289781A discloses a terminal board detection interface, which includes: an analog standard interface and a digital standard interface; the analog standard interface is arranged on the terminal board and used for realizing undisturbed leading-out of analog channel signals; the digital standard interface is arranged on the terminal board and used for achieving undisturbed leading-out of digital channel signals. According to the invention, by adopting the principle that the voltage drop of the diodes in the analog standard interface and the digital standard interface is fixedly conducted and is greater than the voltage drop of the ammeter, the undisturbed switching of the current and the current measurement without disconnection are realized, a multimeter or other intelligent detection devices can be conveniently matched for measuring process signals, the fault type and source can be judged according to the led-out signals, and the devices do not need to be stopped, and the detection is carried out in turn by one route.
The utility model patent CN209418796U discloses an integrated terminal board of fast wiring, terminal board upper end middle part fixedly connected with wire chase, other fixedly connected with hollow sleeve and fixed column are equallyd divide to the terminal board left and right sides both ends, hollow sleeve upper end activity is pegged graft and is had first branch, first branch bottom end fixedly connected with stopper. The utility model discloses a through setting up hollow sleeve, lower connecting block, a spring, go up the connecting block, the stopper, first branch, the clamp plate, the briquetting, second branch, the fixed column, the atress piece, the box, the son is detained, the mounting bracket, the pintle, the connecting rod, slotted hole and handle, realize the purpose of quick installation, avoided using the fixed screw trouble of fixed screw fixed in turn, the work load has been reduced, the work efficiency of installation has been improved, and simultaneously, also make the box straining son detain more, prevented that the automatic condition that breaks away from the box of son detain from taking place, the steadiness of wiring has been guaranteed.
According to the current prior art, the traditional watt-hour meter calibration wiring mode is complex in wiring and cannot provide an online calibration solution. Meanwhile, in order to ensure the safety, the device needs to be stopped and powered off at first, which brings great economic loss.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a magnetic type special integrated terminal board for voltage and current based on the basic principle of secondary wiring of voltage and current and combined with the practical experience of engineering projects, which integrates the magnetic type current and voltage terminals into a whole, integrates the normal wiring terminal and the checking wiring terminal into a whole and is convenient for wiring operation; meanwhile, the special integrated terminal board adopts the magnetic type terminal and the magnetic type terminal short connecting piece, can realize on-line wiring, and provides a new economic, safe and reliable technical scheme for the watt-hour meter calibration work in engineering projects.
The utility model discloses a but special integrated terminal block of formula voltage electric current is inhaled to magnetism of online calibration kilowatt-hour meter, include:
one end of the magnetic attraction type voltage terminal is connected with a secondary voltage signal end of the voltage transformer, and the other end of the magnetic attraction type voltage terminal is connected with the watt-hour meter or respectively connected with the watt-hour meter and the test meter;
one end of the magnetic current terminal is connected with a secondary current signal end of the current transformer, and the other end of the magnetic current terminal is connected with the watt-hour meter or respectively connected with the watt-hour meter and the test meter;
the magnetic type current terminal short connecting piece is closed when the magnetic type voltage terminal and the magnetic type current terminal are not connected with the test meter, so that a voltage and current path for normal operation is formed; magnetic type voltage terminal with magnetic type current terminal all connects during the experimental test table, magnetic type current terminal short splicing disconnection to constitute complete test voltage, current path with online check-up kilowatt-hour meter.
Furthermore, double short-contact pieces are adopted for each phase current signal, so that the reliability of loop connection is improved.
Further, still include insulating protection casing, magnetism inhale the formula voltage terminal with magnetism inhale the formula current terminal set up in the insulating protection casing.
Further, insulating protection casing bottom is provided with reserves the through wires hole, so that formula voltage terminal is inhaled to magnetism with formula current terminal business turn over line is inhaled to magnetism.
Further, still include the bottom plate, magnetism inhale the formula voltage terminal with magnetism inhale the formula current terminal is integrated integrative, and set up in on the bottom plate.
Furthermore, four groups of magnetic attraction type voltage terminals are arranged, and correspond to three phase lines and a neutral line of a power supply; each group is provided with three connecting ends which are respectively used for connecting a secondary voltage signal end of the voltage transformer, the watt-hour meter and the test meter.
Furthermore, the magnetic current terminals are provided with three groups corresponding to three phase lines of a power supply; each group is provided with three pairs of connecting ends for connecting a secondary current signal end of the current transformer, the watt-hour meter and the test meter.
The beneficial effects of the utility model reside in that:
the magnetic attraction type voltage and current special integrated terminal board integrates magnetic attraction type current and voltage terminals into a whole, integrates a normal wiring terminal and a check wiring terminal into a whole, is convenient for operation wiring, and has high reliability, accuracy and safety; meanwhile, the special integrated terminal board adopts the magnetic type terminal and the magnetic type terminal short connecting piece, can realize online wiring, and provides a new economic, safe and reliable technical scheme for the watt-hour meter calibration work in engineering projects; the production capacity reduction caused by the device parking required under the traditional checking wiring mode can be avoided, and the cost is greatly saved;
in the utility model, each phase of current signal adopts double short splicing pieces, thus increasing the reliability of loop connection;
the magnetic attraction type voltage terminal and the magnetic attraction type current terminal are both arranged in the insulating protective cover, and can play the roles of insulation and protection;
the utility model discloses an insulating protection casing bottom is provided with reserves the through wires hole to be convenient for magnetism to inhale formula voltage terminal and magnetism and inhale formula current terminal business turn over line.
Drawings
Fig. 1 is one of the principle wiring diagrams of the integrated terminal board according to the embodiment of the present invention;
fig. 2 is a second schematic wiring diagram of the integrated terminal board according to the embodiment of the present invention;
fig. 3 is a schematic view of an insulation shield according to an embodiment of the present invention.
Reference numerals: 1-magnetic type voltage and current special integrated terminal board, 2-watt-hour meter, 3-test meter, 401 reserve threading hole;
magnetic attraction type voltage terminal: ua 1-Ua 3, Ub 1-Ua 3, Uc 1-Uc 3 and Un;
formula current terminal is inhaled to magnetism: ia 1-Ia 6, Ib 1-Ib 6 and Ic 1-Ic 6;
magnetic attraction type current terminal short contact piece: LP 1-LP 6.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, the embodiments of the present invention will be described. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
This embodiment provides a but special integrated terminal block of formula voltage current is inhaled to magnetism of online check-up kilowatt-hour meter, including magnetism inhale formula voltage terminal, magnetism inhale formula current terminal and inhale formula current terminal short splicing, wherein the secondary voltage signal end of voltage transformer is connected to the one end of formula voltage terminal, and kilowatt-hour meter 2 or connect kilowatt-hour meter 2 and test table 3 respectively are connected to the other end. One end of the magnetic current terminal is connected with a secondary current signal end of the current transformer, and the other end of the magnetic current terminal is connected with the watt-hour meter 2 or the watt-hour meter 2 and the test meter 3 respectively. The working principle is as follows:
the timing of 2 kilowatt-hour meters of online check-up is not carried out, and formula voltage terminal is inhaled to magnetism and formula current terminal is inhaled all not to connect test table 3 with magnetism, and formula current terminal short splicing is closed to magnetism to constitute voltage, the current path of normal work.
Carry out 2 timing of online check-up kilowatt-hour meter, magnetism is inhaled formula voltage terminal and is inhaled formula current terminal and all connect test table 3 with magnetism, and magnetism is inhaled formula current terminal short splicing disconnection to constitute complete test voltage, current path.
In a preferred embodiment of the present invention, as shown in fig. 1, the on-line verification of the timing of the watt-hour meter 2 is not performed, and the secondary voltage signal of the voltage transformer is connected to the magnetic-type voltage terminals Ua1, Ub1, Uc1 and Un, and then connected to the watt-hour meter 2 through the magnetic-type voltage terminals Ua2, Ub2, Uc2 and Un; the secondary current signals of the current transformers are connected to magnetic attraction type current terminals Ia1, Ia5, Ib1, Ib5, Ic1 and Ic5, and then connected to the watt-hour meter 2 through magnetic attraction type current terminals Ia2, Ia4, Ib2, Ib4, Ic2 and Ic4, and meanwhile, magnetic attraction type current terminal short connection pieces LP 1-LP 6 are all closed to form a complete voltage and current path. Preferably, double short-contact pieces are adopted for each phase current signal, so that the reliability of loop connection is improved.
As shown in fig. 2, when the online verification watt-hour meter 2 is used for timing, the secondary voltage signals of the voltage transformers are connected to magnetic attraction type voltage terminals Ua1, Ub1, Uc1 and Un, and then connected to the watt-hour meter 2 through the magnetic attraction type voltage terminals Ua2, Ub2, Uc2 and Un, and further connected to the test table 3 through the magnetic attraction type voltage terminals Ua3, Ub3, Uc3 and Un; the secondary current signal of the current transformer is connected to magnetic attraction type current terminals Ia1, Ia5, Ib1, Ib5, Ic1 and Ic5, then connected to the watt-hour meter 2 through magnetic attraction type current terminals Ia2, Ia4, Ib2, Ib4, Ic2 and Ic4, connected to the test table 3 through magnetic attraction type current terminals Ia3, Ia6, Ib3, Ib6, Ic3 and Ic6, and finally disconnected from the short connection pieces LP1 to LP6 of the magnetic attraction type current terminals to form a complete test voltage and current path, so that the work of the on-line verification electric power meter can be carried out.
In a preferred embodiment of the present invention, as shown in fig. 3, the magnetic type voltage terminal and the magnetic type current terminal are disposed in the insulating protective cover to perform the functions of insulation and protection. Preferably, insulating protection casing bottom is provided with reserves through wires hole 401 to in the formula voltage terminal is inhaled to magnetism and formula current terminal business turn over line is inhaled to magnetism.
In a preferred embodiment of the utility model, still include the bottom plate, magnetism is inhaled formula voltage terminal and is inhaled formula current terminal integration an organic whole and set up on the bottom plate with magnetism.
The utility model discloses a special integrated terminal block of formula voltage electric current is inhaled to magnetism, magnetism is inhaled formula electric current, voltage terminal and is integrated integrative, and with the integrated an organic whole of normal binding post and check-up binding post, the operation wiring of being convenient for, reliability, accuracy and security are high. In addition, adopt magnetism to inhale formula terminal and magnetism to inhale formula terminal short splicing, but online wiring to the solution that the 2 meters of check-up kilowatt-hour meter on line is provided, the nimble solution that the economic nature is good is provided for engineering project implementation.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the present invention is directed must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either a wired or wireless connection.
Claims (7)
1. The utility model provides a but special integrated terminal board of formula voltage current is inhaled to magnetism of online check-up kilowatt-hour meter which characterized in that includes:
one end of the magnetic attraction type voltage terminal is connected with a secondary voltage signal end of the voltage transformer, and the other end of the magnetic attraction type voltage terminal is connected with the watt-hour meter or respectively connected with the watt-hour meter and the test meter;
one end of the magnetic current terminal is connected with a secondary current signal end of the current transformer, and the other end of the magnetic current terminal is connected with the watt-hour meter or respectively connected with the watt-hour meter and the test meter;
the magnetic type current terminal short connecting piece is closed when the magnetic type voltage terminal and the magnetic type current terminal are not connected with the test meter, so that a voltage and current path for normal operation is formed; magnetic type voltage terminal with magnetic type current terminal all connects during the experimental test table, magnetic type current terminal short splicing disconnection to constitute complete test voltage, current path with online check-up kilowatt-hour meter.
2. The integrated terminal board for magnetic attraction type voltage and current of an online verifiable electric meter according to claim 1, wherein each phase current signal adopts double short-contact pieces to increase the reliability of the loop connection.
3. The integrated terminal board special for magnetic attraction type voltage and current of the electric meter capable of being verified on line according to claim 1, characterized by further comprising an insulating protective cover, wherein the magnetic attraction type voltage terminal and the magnetic attraction type current terminal are arranged in the insulating protective cover.
4. The integrated terminal board for magnetic attraction type voltage and current of the electric meter capable of being verified on line according to claim 3, wherein a reserved threading hole is formed in the bottom of the insulating protective cover so as to facilitate the wire access of the magnetic attraction type voltage terminal and the magnetic attraction type current terminal.
5. The integrated terminal board for magnetic attraction type voltage and current of the electric meter capable of being verified on line according to any one of claims 1 to 4, further comprising a bottom board, wherein the magnetic attraction type voltage terminal and the magnetic attraction type current terminal are integrated and arranged on the bottom board.
6. The integrated terminal board special for magnetic attraction type voltage and current of the online verifiable electric meter according to any one of claims 1 to 4, characterized in that the magnetic attraction type voltage terminals are provided with four groups, corresponding to three phase lines and one neutral line of a power supply; each group is provided with three connecting ends which are respectively used for connecting a secondary voltage signal end of the voltage transformer, the watt-hour meter and the test meter.
7. The integrated terminal board special for magnetic attraction type voltage and current of the electric meter capable of being verified on line according to any one of claims 1 to 4, wherein three groups of magnetic attraction type current terminals are arranged, and correspond to three phase lines of a power supply; each group is provided with three pairs of connecting ends for connecting a secondary current signal end of the current transformer, the watt-hour meter and the test meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022715574.0U CN213843500U (en) | 2020-11-20 | 2020-11-20 | Magnetic attraction type voltage and current special integrated terminal board capable of checking electric meter on line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022715574.0U CN213843500U (en) | 2020-11-20 | 2020-11-20 | Magnetic attraction type voltage and current special integrated terminal board capable of checking electric meter on line |
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| Publication Number | Publication Date |
|---|---|
| CN213843500U true CN213843500U (en) | 2021-07-30 |
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| CN202022715574.0U Active CN213843500U (en) | 2020-11-20 | 2020-11-20 | Magnetic attraction type voltage and current special integrated terminal board capable of checking electric meter on line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115754397A (en) * | 2022-10-31 | 2023-03-07 | 云南电网有限责任公司昆明供电局 | Multifunctional testing system and method for seamlessly connecting high-precision calculation of electric quantity |
-
2020
- 2020-11-20 CN CN202022715574.0U patent/CN213843500U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115754397A (en) * | 2022-10-31 | 2023-03-07 | 云南电网有限责任公司昆明供电局 | Multifunctional testing system and method for seamlessly connecting high-precision calculation of electric quantity |
| CN115754397B (en) * | 2022-10-31 | 2023-12-05 | 云南电网有限责任公司昆明供电局 | Multifunctional testing system and method for seamless connection high-precision electric quantity calculation |
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