CN210323153U - Take device of three-phase four-wire electric energy measurement - Google Patents
Take device of three-phase four-wire electric energy measurement Download PDFInfo
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- CN210323153U CN210323153U CN201920663588.7U CN201920663588U CN210323153U CN 210323153 U CN210323153 U CN 210323153U CN 201920663588 U CN201920663588 U CN 201920663588U CN 210323153 U CN210323153 U CN 210323153U
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Abstract
The utility model relates to an electric power measurement field especially relates to a take device of three-phase four-wire electric energy measurement, including three-phase four-wire electric energy meter, open type clamp type current transformer and crocodile clamp, three-phase four-wire electric energy meter is equipped with a plurality of binding post, binding post divide into current terminal and voltage terminal, open type clamp type current transformer pass through the secondary current line with current terminal is connected, the crocodile clamp through the annealed copper line with voltage terminal is connected. The device can be used for rapidly metering the three-phase circuit, is convenient to disassemble and assemble, and can be carried movably.
Description
Technical Field
The utility model relates to an electric power measurement field especially relates to a take device of three-phase four-wire electric energy measurement.
Background
At present, a common access type three-phase four-wire electric energy metering device with a transformer comprises a multifunctional electric energy meter, a low-voltage closed current transformer, a combined junction box, an electric energy meter box, a secondary circuit and the like. When no complete fixed installation metering device is required on site or electric energy needs to be metered temporarily, the traditional fixed installation mode of installing the metering device cannot well deal with the problem of electric energy metering. Traditionally, a low-voltage primary three-phase line needs to pass through a closed current transformer. When the metering device is assembled and disassembled on the original three-phase main circuit, the primary bus needs to be firstly disassembled for assembling or disassembling the closed mutual inductor, the process is complicated, and the efficiency is low. The metering secondary voltage is subjected to voltage measurement in a mode that a secondary voltage wire is wound on the bus or is connected with the primary bus through a fixing nut, the assembly and disassembly steps are complex, and the operation is difficult.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solve the technical defect who exists, provide a take device of three-phase four-wire electric energy measurement, utilize the device can measure three-phase circuit fast, easy dismounting, portable carries.
The technical scheme of the utility model is that:
the utility model provides a take device of three-phase four-wire electric energy measurement, includes three-phase four-wire electric energy meter, open type clamp current transformer and alligator clip, three-phase four-wire electric energy meter is equipped with a plurality of binding post, binding post divide into current terminal and voltage terminal, open type clamp current transformer pass through the secondary current line with current terminal is connected, the alligator clip pass through the annealed copper wire with voltage terminal is connected.
Further, the wiring terminals comprise 10 wiring terminals of numbers 1-10, wherein numbers 1, 3, 4, 6, 7 and 9 are current terminals, and numbers 2, 5, 8 and 10 are voltage terminals.
Furthermore, the open type clamp current transformer is provided with 3, 3 the open type clamp current transformer is respectively connected with the current terminals of No. 1 and No. 3, No. 4 and No. 6, No. 7 and No. 9 through secondary current lines.
Furthermore, the crocodile clip is provided with 4, 4 the crocodile clip respectively through annealed copper wire with 2, 5, 8, 10 voltage terminal are connected.
When the electricity consumption of a certain section of three-phase four-wire line is required to be measured in unit time, the voltage is clamped by 4 alligator clamps on corresponding phase lines respectively, 3 open type clamp type current transformers are clamped in a primary line according to the same name and the same phase, the electric energy measurement can be realized, and the total electric quantity of the line is the product of the row degree difference of an electric energy meter and the multiplying power of the current transformers.
The utility model has the advantages that:
1. the device is composed of a three-phase four-wire electric energy meter, an open type clamp current transformer, an alligator clip and a plurality of annealed copper wires, and is simple in structure, easy to carry and high in universality;
2. compared with fixed installation, the device has simple assembly and disassembly process, easy operation, flexibility and easy use;
3. the installation can be carried out under the electrified condition of primary line, and the normal power consumption of the line can not be influenced due to the need of power failure.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
in the figure: the device comprises a 1-three-phase four-wire electric energy meter, a 2-open type clamp current transformer and a 3-crocodile clip.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Example 1:
as shown in fig. 1, a take device of three-phase four-wire electric energy measurement, including three-phase four-wire electric energy meter 1, open type clamp current transformer 2 and crocodile clamp 3, three-phase four-wire electric energy meter 1 is equipped with 10 binding post including 1-10, binding post divide into current terminal and voltage terminal, wherein 1, 3, 4, 6, 7, 9 number is current terminal, 2, 5, 8, 10 number is voltage terminal, open type clamp current transformer 2 is equipped with 3, 3 individual open type clamp current transformer 2 is respectively through secondary current line and 1 and 3 numbers, 4 numbers and 6 numbers, 7 numbers and 9 numbers's current terminal is connected, crocodile clamp 3 is equipped with 4, 4 individual crocodile clamp 3 is connected through annealed copper line and 2, 5, 8, 10 numbers voltage terminal respectively.
The three-phase four-wire electric energy meter 1 is used for calculating the electric energy of the main circuit; the number of the open type clamp type current transformers 2 with the annealed copper wires is 3, proper transformation ratio and accuracy are selected according to the situation of field load capacity, large current of a primary circuit is converted into small current in the working range of the electric energy meter, and the small current is connected with corresponding terminals of the electric energy meter through secondary current wires; the number of the crocodile clips 3 is 4, the metal exposed part at the primary line power supply side is used for clamping voltage, and the voltage is connected with the corresponding voltage terminal of the electric energy meter through a soft copper wire.
When the electricity consumption of a certain section of three-phase four-wire line is required to be measured in unit time, the electric energy measurement can be realized only by clamping the 4 alligator clamps 3 on the corresponding phase lines respectively and clamping the 3 open type clamp type current transformers 2 in a primary line according to the homonymy ends and the phase difference, and the total electric quantity of the line is the product of the row degree difference of the electric energy meter and the multiplying power of the current transformers.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (4)
1. The utility model provides a take device of three-phase four-wire electric energy measurement, its characterized in that, includes three-phase four-wire electric energy meter, open type clamp current transformer and alligator clip, three-phase four-wire electric energy meter is equipped with a plurality of binding post, binding post divide into current terminal and voltage terminal, open type clamp current transformer pass through the secondary current line with current terminal is connected, the alligator clip pass through the annealed copper wire with voltage terminal is connected.
2. The device with three-phase four-wire electric energy metering of claim 1, wherein the wiring terminals comprise 10 wiring terminals of numbers 1-10, wherein numbers 1, 3, 4, 6, 7 and 9 are current terminals, and numbers 2, 5, 8 and 10 are voltage terminals.
3. The apparatus of claim 2, wherein 3 open clamp current transformers are connected to the current terminals No. 1 and No. 3, No. 4 and No. 6, and No. 7 and No. 9 through secondary current wires.
4. The device with the three-phase four-wire electric energy metering function according to claim 2, wherein the number of the crocodile clamps is 4, and the 4 crocodile clamps are respectively connected with the No. 2, No. 5, No. 8 and No. 10 voltage terminals through annealed copper wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920663588.7U CN210323153U (en) | 2019-05-09 | 2019-05-09 | Take device of three-phase four-wire electric energy measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920663588.7U CN210323153U (en) | 2019-05-09 | 2019-05-09 | Take device of three-phase four-wire electric energy measurement |
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| CN210323153U true CN210323153U (en) | 2020-04-14 |
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| CN201920663588.7U Active CN210323153U (en) | 2019-05-09 | 2019-05-09 | Take device of three-phase four-wire electric energy measurement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111415558A (en) * | 2020-05-28 | 2020-07-14 | 广东电网有限责任公司培训与评价中心 | Parallel low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet |
| CN111707970A (en) * | 2020-06-28 | 2020-09-25 | 国网山东省电力公司威海供电公司 | Secondary phase checking device of combined mutual inductor |
| CN112083208A (en) * | 2020-09-23 | 2020-12-15 | 国网山东省电力公司潍坊供电公司 | Mutual inductor type three-phase electric energy meter capable of preventing electricity stealing by short-circuit current |
-
2019
- 2019-05-09 CN CN201920663588.7U patent/CN210323153U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111415558A (en) * | 2020-05-28 | 2020-07-14 | 广东电网有限责任公司培训与评价中心 | Parallel low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet |
| CN111415558B (en) * | 2020-05-28 | 2022-03-29 | 广东电网有限责任公司培训与评价中心 | Parallel low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet |
| CN111707970A (en) * | 2020-06-28 | 2020-09-25 | 国网山东省电力公司威海供电公司 | Secondary phase checking device of combined mutual inductor |
| CN112083208A (en) * | 2020-09-23 | 2020-12-15 | 国网山东省电力公司潍坊供电公司 | Mutual inductor type three-phase electric energy meter capable of preventing electricity stealing by short-circuit current |
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