Split type measuring device

Abstract

The split type measuring device of the present invention comprises: a first annular core which forms a magnetic closed loop around a first power line and is composed of a first upper core and a first lower core; and a second annular core that forms a magnetic closed loop around the second power line and is composed of a second upper core and a second lower core, the upper module and the lower module being capable of being coupled and separated, the upper module including an upper housing for accommodating the first upper core and the second upper core, and the lower module including a lower housing for accommodating the first upper core and the second upper core. The lower module includes a lower case for accommodating a first lower core and a second lower core, and measures the current of the first power line using the first annular core and the current of the second power line using the second annular core. A pair of first contact regions in which the first upper core and the first lower core are in contact with each other and a pair of second contact regions in which the second upper core and the second lower core are in contact with each other are provided so as to be spaced apart from each other in the direction in which the first power line and the second power line extend.

Description

Technical Field

[0001] This invention relates to a split-type measuring device with current measurement function, and further to a measuring device with a detachable temperature measurement module. Background Technology

[0002] In power measurement of distribution boards and sub-distribution boards, only the input end is usually measured. However, in order to achieve refined management of power systems, the requirements for branch circuit measurement are constantly increasing.

[0003] To perform such measurements, current transformers (CTs) are typically installed in each branch circuit, and signal lines are connected from each current transformer (CT) to a central measuring device for measurement. However, this increases the complexity of the wiring and makes it difficult to calibrate each current transformer module individually, limiting the improvement of accuracy.

[0004] To overcome this limitation, a voltage measurement module for measuring voltage and a current measurement module for measuring current are separated. The voltage data measured by the voltage measurement module is transmitted to the current measurement module located in each branch circuit. Each current measurement module is developed into a form that uses the received voltage data to calculate power, etc.

[0005] As a current measurement module used for measuring current, the split-type design facilitates panel manufacturing and allows for live-line work during power line replacement, thus enjoying widespread demand in the field. However, according to the inventors' research, existing split-type current measurement modules have limitations in improving accuracy.

[0006] Figure 1 A conceptual diagram illustrating an application example of an existing split-type current measurement module.

[0007] In each current measuring device 1, three busbars 3 connected to the molded case circuit brake 2 (MCCB) are formed. In order to measure the current of each busbar 3, an annular core is provided to surround the busbar 3.

[0008] In the split-type current measuring device 1, the upper core and the lower core form a closed loop through contact, but the upper core and the lower core are in contact with each other in the contact area 1a. Since there is little available space between the busbars, the cores are adjacent to each other, and in order to ensure the specified horizontal core cross-sectional size, the cores are shaped to extend along the length direction of the busbar.

[0009] In the split-type current measuring device 1, this existing structure can also provide a fairly high level of measurement accuracy. However, according to the inventors' research, since the contact areas 1a are adjacent to each other, interference occurs between adjacent cores, thereby limiting the improvement of accuracy.

[0010] In a three-phase power line connected to the same molded case circuit brake (MCCB), the distance between multiple contact areas 1a of the cores of adjacent power lines is d1. In a three-phase power line connected to different molded case circuit brakes (MCCB), the distance between multiple contact areas 1a of the cores of adjacent power lines is d2. If two molded case circuit brakes (MCCB) are adjacent, d1 and d2 are almost the same.

[0011] Since the upper and lower coils are in contact with each other, existing split-type current measuring devices do not have much of a problem in ensuring a fairly high level of accuracy. However, in the process of improving accuracy to ensure the highest level of accuracy, the contiguousness between multiple contact areas 1a has become a problem. Summary of the Invention

[0012] One objective of this invention is to provide a split-type measuring device that can overcome the limitations of existing measurement accuracy.

[0013] Furthermore, another object of the present invention is to provide a split-type measuring device with higher measurement accuracy.

[0014] Furthermore, another objective of the present invention is to provide a temperature measurement module and a split-type measurement device that are more convenient for measuring temperature.

[0015] A split-type measuring device according to one embodiment of the present invention includes: a first annular core forming a magnetic closed loop around a first power line, and composed of a first upper core and a first lower core; and a second annular core forming a magnetic closed loop around a second power line, and composed of a second upper core and a second lower core. The upper module and the lower module can be combined and separated. The upper module includes an upper outer shell for housing the first upper core and the second upper core, and the lower module includes a lower outer shell for housing the first lower core and the second lower core. The first annular core is used to measure the current of the first power line, and the second annular core is used to measure the current of the second power line. The first annular core and the second annular core are spaced apart from each other in the direction in which the first power line and the second power line extend, that is, they are spaced apart from each other in the extension direction.

[0016] The aforementioned split-type measuring device is characterized in that a pair of first contact areas where the first upper core and the first lower core are in contact with each other and a pair of second contact areas where the second upper core and the second lower core are in contact with each other are separated from each other in the direction of extension of the first power line and the second power line, that is, separated from each other in the extension direction.

[0017] In the above-mentioned split-type measuring device, the pair of first contact areas and the pair of second contact areas are quadrilateral regions, and the lateral width perpendicular to the extension direction can be greater than 0.5 times the width of the extension direction and less than 2 times the width of the extension direction.

[0018] In the aforementioned split-type measuring device, the width in the lateral direction can be the same as the width in the extension direction.

[0019] In the above-mentioned split-type measuring device, the separation distance L between the pair of first contact areas and the pair of second contact areas in the above-mentioned extending direction can be 20 mm or more.

[0020] In the aforementioned split-type measuring device, when viewed from above, the main body, formed by the combination of the upper and lower modules, exhibits portions protruding from two sides. Figure 24 or Figure 25 The shape shown.

[0021] In the aforementioned split-type measuring device, in the main body where the upper module and the lower module are combined, a protruding portion and a recessed portion are formed on the first side, and a protruding portion and a recessed portion are formed on the second side facing the first side. The recessed portion of the second side is formed on the opposite side of the protruding portion of the first side, and the protruding portion of the second side is formed on the opposite side of the recessed portion of the first side.

[0022] In the above-mentioned split-type measuring device, when the two main bodies are arranged adjacent to each other, the protruding part of the second main body is received in the recessed part of the first main body, and the protruding part of the first main body is received in the recessed part of the second main body.

[0023] In the aforementioned split-type measuring device, for a three-phase four-wire power line, the first main body can measure the current of two of the four power lines, and the second main body can measure the current of the remaining two of the four power lines.

[0024] In the aforementioned split-type measuring device, a portion of the first annular core may be located inside the protruding portion of the first side, and a portion of the second annular core may be located inside the protruding portion of the second side.

[0025] In the above-mentioned split-type measuring device, the current of two adjacent power lines in two pairs of single-phase power lines can be measured at one time by using the first ring core and the second ring core respectively.

[0026] In the aforementioned split-type measuring device, in a three-phase three-wire power line, the current of the three-phase three-wire power line can be measured by using the first ring core and the second ring core to measure the current of two adjacent power lines respectively.

[0027] In the above-mentioned split-type measuring device, the upper part of the lower housing may include: a first cylindrical wall body, which is inserted into a rectangular cylindrical shape to surround the first-1 contact area near the side of the pair of first contact areas; and a second cylindrical wall body, which is inserted into a rectangular cylindrical shape to surround the second-1 contact area near the side of the pair of second contact areas.

[0028] In the above-mentioned split-type measuring device, a third cylindrical wall can be provided on the upper part of the lower outer shell. The third cylindrical wall is inserted into a rectangular cylinder in a manner that surrounds the first-2 contact area and the second-2 contact area. The first-2 contact area is the contact area located at the center of the pair of first contact areas, and the second-2 contact area is the contact area located at the center of the pair of second contact areas.

[0029] In the above-mentioned split-type measuring device, an insertion part is provided at the lower part of the upper outer shell, which is inserted and attached to the third cylindrical wall and inserted downward. Inside the third cylindrical wall, a key plate is provided and inserted in a direction perpendicular to the third cylindrical wall. The key plate is inserted into the key groove of the insertion part to help the upper module and the lower module fit together.

[0030] In the aforementioned split-type measuring device, a first through hole through which the first power line passes and a second through hole through which the second power line passes are formed in the combined upper and lower housings. The upper module may further include: a first temperature sensor housed in the upper housing, which detects the temperature of the first power line by being disposed above the first through hole; and a second temperature sensor housed in the upper housing, which detects the temperature of the second power line by being disposed above the second through hole.

[0031] In the aforementioned split-type measuring device, the split-type measuring device may further include: a first temperature measuring module, which can be detachably combined with the upper module on a first side of the upper module for detecting the temperature of adjacent power lines that are not connected; and a second temperature measuring module, which can be detachably combined with the upper module on a second side of the upper module for detecting the temperature of adjacent power lines that are not connected, wherein the second side is the opposite side of the first side.

[0032] In the aforementioned split-type measuring device, the first temperature measuring module and the second temperature measuring module respectively include: a module connecting pin, which can be connected to the main body connecting pin of the upper module; a temperature sensor, which can be moved by lateral sliding to detect the temperature of the power line downwards; and a flexible printed circuit board (FPCB), which is disposed between the temperature sensor and the module connecting pin to form a path for electrical signals.

[0033] In the above-mentioned split-type measuring device, the split-type measuring device may include: a sliding module, which is equipped with the temperature sensor and has a window or lens on its lower surface that allows detection light to pass through; and a guide housing for guiding the sliding module to slide.

[0034] In the above-mentioned split-type measuring device, a flange extending vertically from the periphery of the module connecting pin is formed in the guide housing, and a groove that fits with the flange along the periphery of the main connecting pin is formed in the upper housing. The first temperature measuring module or the second temperature measuring module can be installed by sliding the flange into the groove from bottom to top.

[0035] In the above-mentioned split-type measuring device, the split-type measuring device may include: micro-grooves formed on the upper surface of the sliding module, and multiple micro-grooves formed along the transverse direction; and a cantilever disposed on the upper part of the guide housing, extending along the transverse direction, with a protrusion formed at the lower part of the front end, and the protrusion being placed in one of the micro-grooves.

[0036] In the aforementioned split-type measuring device, on the upper surface of the aforementioned sliding module, next to the plurality of aforementioned micro-grooves, multiple characters indicating the specifications of the Molded Case Circuit Brake (MCCB) are printed or engraved, and a confirmation window can be formed on the upper part of the aforementioned guide housing, the confirmation window being used to expose one of the aforementioned multiple characters.

[0037] The split-type measuring device according to the present invention has the following advantages: it facilitates the arrangement of multiple contact areas of the core to be sufficiently separated so that they are not adjacent to each other. Therefore, interference between contact areas and interference with power lines can be minimized, thereby further improving the measurement accuracy compared to existing split-type measuring devices. Thus, the limitations of existing split-type measuring devices in terms of measurement accuracy can be overcome.

[0038] The split-type measuring device according to the present invention has the following effect: the contact surface between the upper core and the lower core can be designed as a square or a shape with small differences in size in the horizontal and vertical directions, thereby further improving the measurement accuracy compared with existing split-type measuring devices.

[0039] The split-type measuring device according to the present invention has the following effect: by forming cylindrical walls on both sides of the power line to ensure the gap between the power line and the contact area (core) and to achieve complete insulation, electrical safety is maximized.

[0040] The split-type measuring device according to the present invention has the following effect: protruding and recessed portions are formed on the lateral side, and by making each protruding portion fit into the recessed portion on the opposite side, multiple split-type measuring devices can be easily applied by tightly attaching them along the lateral side.

[0041] The split-type measuring device and temperature measuring module according to the present invention have the following effects: users can assemble the temperature measuring module by disassembly and assembly, so it can also detect the temperature of adjacent power lines that are not connected to the main body. In applications where the temperature measuring module is disassembled and the main body is continuously set, it can also be used as the same main body.

[0042] The split-type measuring device and temperature measuring module according to the present invention have the following advantages: since the position of the temperature sensor extending from the main body can be adjusted, it can be adapted to various specifications of power line spacing (various specifications of plastic-cased circuit brakes (MCCB)) to detect the temperature of external power lines.

[0043] The split-type measuring device and temperature measuring module according to the present invention have the following advantages: the position of the temperature sensor can be easily set according to the specifications of the plastic-cased circuit brake (MCCB), making it easy to accurately position the temperature sensor above the power line. Attached Figure Description

[0044] Figure 1 A conceptual diagram illustrating an application example of an existing split-type current measurement module.

[0045] Figure 2 and Figure 3 This is a perspective view showing the exterior of a split-type measuring device according to an embodiment of the present invention.

[0046] Figure 4 and Figure 5 This is a perspective view showing the exterior of the upper and lower modules separated from the temperature measurement module.

[0047] Figure 6 and Figure 7 An exploded perspective view of the temperature measurement module and the upper module in a split-type measuring device according to an embodiment of the present invention is shown.

[0048] Figure 8 and Figure 9 An exploded perspective view of the lower module in a split-type measuring device according to an embodiment of the present invention is shown.

[0049] Figure 10 This is a perspective view of a temperature measurement module according to an embodiment of the present invention.

[0050] Figure 11 and Figure 12 A perspective view showing an exploded embodiment of the temperature measurement module of the present invention.

[0051] Figure 13 The diagram illustrates a split-type measuring device according to an embodiment of the present invention.

[0052] Figure 14 The diagram illustrates, schematically, the state in which a split-type measuring device according to an embodiment of the present invention is installed on multiple three-phase three-wire power lines.

[0053] Figure 15 Part (a) is a schematic diagram showing the state in which a split-type measuring device according to an embodiment of the present invention is installed on two single-phase power lines. Figure 15 Part (b) is a schematic diagram showing the state of a split measuring device according to an embodiment of the present invention installed on a three-phase four-wire power line.

[0054] Figure 16 The diagram illustrates, schematically, the temperature measurement module installed in the main body of a split-type measuring device according to an embodiment of the present invention. Figure 16 Part (a) and Figure 16 Part (b) shows different examples installed on a three-phase three-wire power line. Figure 16 Section (c) shows an example installed on two pairs of single-phase power lines.

[0055] Figure 17 This is a schematic diagram illustrating the simulated situation.

[0056] Figure 18 and Figure 19 Visually displays the magnetic flux density (peak value) in adjacent cores (current transformers (CTs)). Figure 18For based on Figure 17 The diagram showing the settings (horizontally separated) for part (a). Figure 19 For based on Figure 17 The diagram shows the setup of part (b) (separated by the extension direction).

[0057] Figure 20 and Figure 21 A graph representing the crosstalk ratio based on the spacing between cores (current transformers (CTs)). Figure 20 For based on Figure 17 The diagram showing the settings (horizontally separated) for part (a). Figure 21 For based on Figure 17 The diagram shows the setup of part (b) (separated by the extension direction).

[0058] Figure 22 This is a schematic diagram illustrating a simulation conducted to understand the separation distance that is almost unaffected by crosstalk.

[0059] Figure 23 A table showing the output voltage and crosstalk ratio.

[0060] Figure 24 and Figure 25 The shapes of the outer perimeter of the first upper shell, the second upper shell, and the main body are shown.

[0061] Explanation of reference numerals in the attached figures

[0062] 10: Split-type measuring device; 100: Upper module

[0063] 111: 1st upper core 121: 2nd upper core

[0064] 112: First upper spool 122: Second upper spool

[0065] 130: Upper Printed Circuit Board (PCB) Assembly; 140: First Upper Housing

[0066] 150: Second upper outer shell; 160: Upper cover.

[0067] 170: Main Printed Circuit Board (PCB) Assembly 181: First Leaf Spring

[0068] 182: Second leaf spring; 200: Lower module

[0069] 211: 1st lower core 221: 2nd lower core

[0070] 212: First lower spool 222: Second lower spool

[0071] 240: Lower First Printed Circuit Board (PCB) Assembly

[0072] 250: Second Lower Printed Circuit Board (PCB) Assembly

[0073] 260: First lower outer shell; 270: Second lower outer shell

[0074] 300, 400: Temperature measurement module; 310: Temperature sensor module

[0075] 321, 322: Connecting units; 330, 340: Sliding modules

[0076] 350, 360: Guide housing Detailed Implementation

[0077] Figure 2 and Figure 3 This is a perspective view showing the exterior of a split-type measuring device according to an embodiment of the present invention. Figure 4 and Figure 5 This is a perspective view showing the exterior of the upper and lower modules separated from the temperature measurement module.

[0078] In one embodiment of the present invention, a split-type measuring device 10 is installed in each branch circuit in a distribution panel or switchboard. The central measuring device is connected to each split-type measuring device 10 via a data communication line. After receiving voltage data from the central measuring device, the device calculates the power value using the current it measures and transmits the calculated power value to the central measuring device.

[0079] A split-type measuring device 10 according to an embodiment of the present invention includes an upper module 100, a lower module 200, a first temperature measuring module 300, and a second temperature measuring module 400. As its name suggests, the split-type measuring device 10 of the present invention allows the user to separate or combine the upper module 100 and the lower module 200. The upper module 100 and the lower module 200 constitute the main body 11 of the split-type measuring device.

[0080] The upper module 100 and lower module 200, which are connected to each other, have a first through hole T1 through which a power line such as a busbar or wire passes, and a second through hole T2 through which another power line passes. The outer casing has a first through hole T1 through which the first power line passes, and a second through hole T2 through which the second power line passes.

[0081] In one embodiment of the present invention, the split measuring device is connected by two power lines (busbars or wires). For example, the lower module 200 can be installed behind the panel of the distribution panel or switchboard using bolts P2, P3 or screws. The power lines are placed in the areas that will become the through holes T1 and T2. Then, the upper module 100 is attached to the lower module 200 using bolt P1.

[0082] Through holes T1 and T2 are formed in the main body 11 according to the direction of the power line extension (hereinafter also referred to as the "extension direction") (X direction), forming an empty space in a roughly square column shape along the extension direction. Although not exposed in the appearance of the combined main body, as described later, a first annular core is provided along the periphery of the first through hole T1, and a second annular core is provided along the periphery of the second through hole T2. The main body 11 includes the first annular core, the second annular core, and a shell, etc.

[0083] In particular, in the main body 11, there is a height difference on the side located in the direction perpendicular to the extension direction (X direction) and spanning the two power lines (Y direction). The first side is composed of the first-1 side S11 and the first-2 side S12, and there is a height difference between the first-1 side S11 and the first-2 side S12. The second side is composed of the second-1 side S21 and the second-2 side S22, and there is a height difference between the second-1 side S21 and the second-2 side S22.

[0084] Side 1-2 S12 is located in a more concave position than side 1-1 S11, thus forming a concave portion next to side 1-2 S12. Side 2-2 S22 is located in a more concave position than side 2-1 S21, thus forming a concave portion next to side 2-2 S22.

[0085] Conversely, since side 1-1 S11 is located in a more protruding position than side 1-2 S12, the main body forms a protruding portion composed of side 1-1 S11. Similarly, since side 2-1 S21 is located in a more protruding position than side 2-2 S22, a protruding portion composed of side 2-1 S21 is formed. Side 1-2 S12 meets the first through hole T1 and is cut off in its middle portion; side 2-2 S12 meets the second through hole T2 and is cut off in its middle portion.

[0086] In the first and second sides, the recessed portion and the protruding portion are perpendicular to the extension direction and extend into the same contour in the vertical direction (Z direction).

[0087] Connectors 171 and 172 for supplying power and transmitting communication signals are exposed on the upper surface of the upper module 100. A first temperature measurement module 300 can be installed on the first side (specifically the first-second side S12), and a second temperature measurement module 400 can be installed on the second side (specifically the second-second side S22).

[0088] Although the upper module 100 and the lower module 200 are essential, the first temperature measurement module 300 and the second temperature measurement module 400 can be set up, or only one of them can be set up, or none of them can be set up.

[0089] Temperature measurement modules 300 and 400 can be used to measure the temperature of adjacent power lines that do not penetrate the main body 11. When using the temperature measurement module, it is inserted and fixed after installation from the bottom to the top of the main body (upper module) in a sliding manner.

[0090] When the first temperature measurement module 300 is not set, the first cover 510 is slidably inserted into the upper module 100 to block the part where the first temperature measurement module 300 will be joined. When the second temperature measurement module 400 is not set, the second cover 520 is slidably inserted into the upper module 100 to close the part where the second temperature measurement module 400 will be joined.

[0091] The first temperature measurement module 300 can be detachably attached to the upper module 100 on a first side of the main body 10 (specifically the upper module 100) for detecting the temperature of adjacent power lines that are not connected. The second temperature measurement module 400 can be detachably attached to the upper module 100 on a second side, which is the opposite side of the first side of the main body 10 (specifically the upper module 100), for detecting the temperature of other adjacent power lines that are not connected.

[0092] Figure 6 and Figure 7 An exploded perspective view of the temperature measurement module and the upper module in a split-type measuring device according to an embodiment of the present invention is shown. Figure 8 and Figure 9 An exploded perspective view of the lower module in a split-type measuring device according to an embodiment of the present invention is shown.

[0093] The upper module 100 includes a first upper core 111, a second upper core 121, a first upper spool 112, a second upper spool 122, an upper printed circuit board (PCB) assembly 130, a first upper housing 140, a second upper housing 150, a first leaf spring 181, a second leaf spring 182, an upper cover 160, and a main printed circuit board (PCB) assembly 170.

[0094] The lower module 200 includes a first lower core 211, a second lower core 221, a first lower bobbin 212, a second lower bobbin 222, a first lower printed circuit board (PCB) assembly 240, a second lower printed circuit board (PCB) assembly 250, a first lower housing 260, and a second lower housing 270.

[0095] The outer shell of the main body 11 includes a first upper outer shell 140, a second upper outer shell 150, a first lower outer shell 260, and a second lower outer shell 270. The upper outer shell is used to house the first upper core and the second upper core, etc., and includes the first upper outer shell 140 and the second upper outer shell 150. The lower outer shell is used to house the first lower core and the second lower core, etc., and includes the first lower outer shell 260 and the second lower outer shell 270.

[0096] The first upper core 111 and the first lower core 211, which are in contact with each other, form a first annular core. The first annular core forms a magnetic (magnetic) closed loop around the first power line that will pass through the first line through hole T1. The first upper core 111 and the first lower core 211 extend in such a way that they have quadrilateral cross-sections and the quadrilateral cross-sections form a closed loop. The first annular core is arranged such that the through portion at its center is finally aligned with the first line through hole T1.

[0097] When the upper module 100 and the lower module 200 are combined, the first upper core 111 and the first lower core 211 form a pair of quadrilateral first contact areas and contact each other.

[0098] One of the first contact areas is the area where one end of the first upper core 111 contacts one end of the first lower core 211, and the other of the first contact areas is the area where the other end of the first upper core 111 contacts the other end of the first lower core 211.

[0099] The first upper spool 112 surrounds the first upper core 111 above the first upper core, providing a (woundable) frame for winding the first upper coil (not shown) and providing insulation between the upper and lower spools. The first lower spool 212 surrounds the first lower core 211 below the first lower core, providing a (woundable) frame for winding the first lower coil (not shown) and providing insulation between the lower and lower spools.

[0100] The second upper core 121 and the second lower core 221, which are in contact with each other, form a ring-shaped second annular core. The second annular core forms a magnetic (magnetic) closed loop around the second power line that will pass through the second line through hole T2. The second upper core 121 and the second lower core 221 extend in such a way that they have quadrilateral cross-sections and the quadrilateral cross-sections form a closed loop. The second annular core is arranged such that the through portion at its center is finally aligned with the second line through hole T2.

[0101] When the upper module 100 and the lower module 200 are combined, the second upper core 121 and the second lower core 221 form a pair of quadrilateral first contact areas and contact each other.

[0102] One of the second contact areas is the area where one end of the second upper core 121 contacts one end of the second lower core 221, and the other of the second contact areas is the area where the other end of the second upper core 121 contacts the other end of the second lower core 221.

[0103] The second upper spool 122 surrounds the second upper core 121 above the second upper core, providing a (woundable) frame for winding the second upper coil (not shown) and providing insulation between the upper and lower spools. The second lower spool 222 surrounds the second lower core 221 below the second lower core, providing a (woundable) frame for winding the second lower coil (not shown) and providing insulation between the lower and lower spools.

[0104] The first leaf spring 181 has blade portions 181b and 181c extending downward from both sides of a plate-shaped center portion 181a. By applying downward pressure to the first upper spool 112 above it, a tight fit is achieved between the first upper core and the first lower core. The second leaf spring 182 has blade portions 182b and 182c extending downward from both sides of a plate-shaped center portion 182a. By applying downward pressure to the second upper spool 122 above it, a tight fit is achieved between the second upper core and the second lower core.

[0105] The upper housing consists of a first upper housing 140 and a second upper housing 150, which are used to house various components that make up the upper module 100. The internal space between the two houses the first upper core 111, the second upper core 121, the first upper spool 112, the second upper spool 122, the first leaf spring 181, the second leaf spring 182, and the upper printed circuit board (PCB) assembly 130.

[0106] The outer perimeter of the first upper outer shell 140 is formed Figure 24 or Figure 25The shape shown extends vertically (in the Z direction) and provides space to its interior. The second upper housing 150 blocks the lower part of the first upper housing 140 and has openings that are slightly exposed by the lower ends of the first upper core 111 and the second upper core 121 and the lower ends of the first upper spring pin 133 and the second upper spring pin 134 extending downward from the upper printed circuit board (PCB) assembly 130. Inverted U-shaped first upper grooves t1 and second upper grooves t2 are formed in the second upper housing 150 to form approximately half of the first through-hole T1 and the second through-hole T2.

[0107] The second upper housing 150 has a first upper plug portion 153 and a second upper plug portion 154 extending downward.

[0108] The first upper plug portion 153 includes: a first plug block 153a, the outer periphery of which is generally short rectangular prism; a first core through hole 153b, which is penetrated by the first upper core 111 to form a rectangular prism space in the first plug block 153a; and a first spring pin through hole 153c, which is penetrated by the first upper spring pin 133 to form a cylindrical space in the first plug block 153a.

[0109] The second upper plug portion 154 includes: a second plug block 154a, the outer periphery of which is generally short rectangular prism; a second core through hole 154b, which is penetrated by the second upper core 121 to form a rectangular prism space in the second plug block 154a; and a second spring pin through hole 154c, which is penetrated by the second upper spring pin 134 to form a cylindrical space in the second plug block 154a.

[0110] The first upper housing 140 forms a first upper space E1 and a second upper space E2 for accommodating the first upper core 111, the second upper core 121, the first upper spool 112, the second upper spool 122 and the upper printed circuit board (PCB) assembly 130, with the housing partition 141 as the center.

[0111] The upper printed circuit board (PCB) assembly 130 is housed in the first upper space E1 and includes a printed circuit board (PCB) substrate 137, a first temperature sensor 131, a second temperature sensor 132, an upper spring pin 133, an upper spring pin 134, a main body connecting pin 135, a main body connecting pin 136, a first upper socket 139a, a second upper socket 139b, and a connecting pin 138.

[0112] Upper spring pins 133 and 134 are mounted on the lower part of the printed circuit board (PCB) substrate 137 and are used to transmit signals with the first lower PCB assembly 240 and the second lower PCB assembly 250, respectively. Main connecting pins 135 and 136 are mounted on the upper surface of the PCB substrate 137 and are used to transmit signals with the first temperature measurement module 300 and the second temperature measurement module 400. The two ends of the first upper coil are connected to the first upper socket 139a, and the two ends of the second upper coil are connected to the second upper socket 139b. Connecting pin 138 is used to transmit signals with the main PCB assembly 170.

[0113] The first temperature sensor 131 is housed in the housing (upper housing) and is disposed above (or below) the first line through hole T1 for detecting the temperature of the first power line. The first temperature sensor 131 is mounted on the lower surface of the printed circuit board (PCB) substrate 137 and allows detection light to pass through through the window A formed in the second upper housing 150.

[0114] The first temperature sensor 131 measures the temperature of the first power line passing through the first line through hole T1 at the upper part of the first upper groove t1.

[0115] The second temperature sensor 132 is housed in the housing (upper housing) and is positioned above (or below) the second through-hole T2 for detecting the temperature of the second power line. The second temperature sensor 132 is mounted on the lower surface of the printed circuit board (PCB) substrate 137 and allows detection light to pass through a window formed in the second upper housing 150. The second temperature sensor 132 measures the temperature of the second power line passing through the second through-hole T2 at the upper part of the second upper trench t2.

[0116] A lens can be provided in window A or between the temperature sensor and window A. The lens can narrow the detection angle (range) of the temperature sensor by focusing the detection light, thereby accurately detecting only the power line. A filter can be provided in window A or between the temperature sensor and window A. The filter can be used to allow a portion (e.g., the central portion) of the detection light to pass through and accurately detect only the power line by narrowing the detection angle (range) of the temperature sensor.

[0117] Temperature sensors 131 and 132 are non-contact temperature sensors, such as infrared temperature sensors.

[0118] The main printed circuit board (PCB) assembly 170 is housed in the second upper space E2 and includes a printed circuit board (PCB) 173 and a first connector 171, a second connector 172, and a third connector 174 mounted on the printed circuit board (PCB) 173. The upper cover 160 covers the exposed second upper space E2 of the first upper housing 140.

[0119] Connectors 171 and 172 can be used for power supply and communication signal transmission in a daisy-chain topology. Connector 174 can be used to connect additional sensor modules, for example, to connect a Z-current transformer (CT) module to a split-type measuring device (main body).

[0120] Furthermore, the split-type measuring device can be divided into two types: a main split-type measuring device and a sub-split-type measuring device. The main split-type measuring device is connected to a daisy-chain topology using connectors 171 and 172, and the sub-split-type measuring device can be connected to the main split-type measuring device using connector 174. For example, as... Figure 15 As shown in part (b), when measuring a three-phase four-wire power line, one of the two split measuring devices can be used as the main split measuring device and the other as the sub-split measuring device for measurement.

[0121] The lower housing consists of a first lower housing 260 and a second lower housing 270, which are used to house multiple components constituting the lower module. Specifically, they are used to house a first lower core 211, a second lower core 221, a first lower bobbin 212, a second lower bobbin 222, a first lower printed circuit board (PCB) assembly 240, and a second lower printed circuit board (PCB) assembly 250.

[0122] The outer perimeter of the second lower outer shell 270 is formed. Figure 24 or Figure 25 The shape shown extends vertically (in the Z direction) and provides space to its interior. The first lower housing 260 blocks the upper part of the second lower housing 270, but exposes the upper ends of the first lower core 211 and the second lower core 221, allowing the upper ends of the first lower spring pin 242 and the second lower spring pin 252 to pass through and be exposed. Inverted "U"-shaped first lower grooves t3 and second lower grooves t4 are formed in the first lower housing 260 to form approximately half of the first circuit through-hole T1 and the second circuit through-hole T2. The first circuit through-hole T1, through which the first power line passes, and the second circuit through-hole T2, through which the second power line passes, are formed in the interlocking upper and lower housings.

[0123] The first lower printed circuit board (PCB) assembly 240 includes a printed circuit board (PCB) 241, a first lower socket 243 connected to both ends of a first lower coil (not shown), and a first lower spring pin 242 in contact with a first upper spring pin. The second lower printed circuit board (PCB) assembly 250 includes a printed circuit board (PCB) 251, a second lower socket 253 connected to both ends of a second lower coil (not shown), and a second lower spring pin 252 in contact with a second upper spring pin.

[0124] A third cylindrical wall 262 is provided on the upper part of the lower outer shell (specifically the first lower outer shell 260). The third cylindrical wall 262 is inserted into a rectangular cylindrical shape to surround the first-2 contact area and the second-2 contact area. The first-2 contact area is the central contact area among a pair of first contact areas, and the second-2 contact area is the central contact area among a pair of second contact areas.

[0125] A key plate D is provided inside the third cylindrical wall 262. The key plate D is inserted vertically between the third cylindrical wall and the bottom surface, and is roughly triangular in shape. The key plate D is inserted into the keyway F of the insertion part 151 to help the upper module 100 and the lower module 200 fit together.

[0126] Furthermore, the first cylindrical wall 261 is inserted into a rectangular cylindrical shape to surround the first-1 contact area near the side of a pair of first contact areas, and the second cylindrical wall 264 is inserted into a rectangular cylindrical shape to surround the second-1 contact area near the side of a pair of second contact areas.

[0127] The end of the first upper core 111 and the first upper plug portion 153 are received from the top of the opening into the interior of the first cylindrical wall 261, and the end of the second upper core 121 and the second upper plug portion 154 are received from the top of the opening into the interior of the second cylindrical wall 264.

[0128] Because the first cylindrical wall 261 completely surrounds the first contact area (specifically, the first-1 contact area), complete insulation and clearance are ensured between it and the first power line. Furthermore, although the split measuring device does not penetrate through it, complete insulation and clearance are also ensured between it and other adjacent power lines. Because the second cylindrical wall 264 completely surrounds the second contact area (specifically, the second-1 contact area), complete insulation and clearance are ensured between it and the second power line. Furthermore, although the split measuring device does not penetrate through it, complete insulation and clearance are also ensured between it and other adjacent power lines.

[0129] Since the third cylindrical wall 262 completely surrounds the first-2 contact area and the second-2 contact area, complete insulation and clearance are ensured between it and the first power line and the second power line.

[0130] The split-type measuring device according to the present invention has the following effect: by forming cylindrical walls on both sides and the center of the power line to ensure the gap between the power line and the contact area (core) and to achieve complete insulation, electrical safety is maximized.

[0131] An insertion portion 151 is provided at the lower part of the upper outer casing, which is inserted into and fits against the third cylindrical wall. The insertion portion 151 is formed into a plug shape that is inserted downward between the first upper groove t1 and the second upper groove t2, allowing the first upper core and the second upper core to pass through. A keyway F is provided on the side of the insertion portion 151 for inserting a key plate D. The lateral depth of the keyway F narrows from bottom to top to accommodate the narrowing of the triangular plate-shaped key plate D from bottom to top.

[0132] Figure 10 This is a perspective view of a temperature measurement module according to an embodiment of the present invention. Figure 11 and Figure 12 A perspective view showing an exploded embodiment of the temperature measurement module of the present invention.

[0133] The first temperature measurement module 300 has the same structure as the second temperature measurement module 400, therefore, only the "temperature measurement module 300" will be described below. The temperature measurement module 300 includes a temperature sensor module 310, a connection unit 320 (flexible printed circuit board 321, module connecting pin 322), a sliding module 330, a sliding module 340, and guide housings 350 and 360.

[0134] Temperature sensor module 310 has a temperature sensor 311 mounted on the lower surface of printed circuit board (PCB) substrate 312. Temperature sensor 311 faces downward through window 343 of sliding module. Temperature sensor module 310 (temperature sensor 311) fixedly mounted on sliding module slides together with sliding module 330 and sliding module 340 along the lateral Y direction, thereby enabling relative positional movement between it and main body 10 (upper module 100). Temperature sensor 311 detects the temperature of power line downwards using a non-contact method, such as using an infrared temperature sensor.

[0135] The connecting unit 320 (flexible printed circuit board 321, module connecting pin 322) serves as the unit for electrically connecting the temperature sensor 311 to the main connecting pins 135 and 136, and includes the module connecting pin 322 and the flexible printed circuit board 321 (FPCB).

[0136] A flexible printed circuit board 321 (FPCB) is disposed between the temperature sensor 311 and the module connecting pin 322, forming a path for electrical signals. It can be flexibly bent even if the temperature sensor 311 and the sliding modules 330 and 340 move. The module connecting pin 322 has multiple spring pins 322a on its side facing the main body 10, which are elastically connected one-to-one with multiple spring pins disposed on the main body connecting pins 135 and 136 to transmit electrical signals.

[0137] Temperature sensors 311 are mounted on sliding modules 330 and 340. A window 343 on the lower surface of the sensor allows detection light to pass through. A lens may be provided between the window 343 and the temperature sensor 311. The lens can focus the detection light to reduce the detection angle (range) of the temperature sensor 311, thereby accurately detecting only electrical lines. A first downward-facing guide protrusion 342 is located at the lower part of the sliding module, and a second upward-facing guide protrusion 332 is located at the upper part. Furthermore, a grip protrusion 341 is formed at the end of the sliding module to facilitate user handling.

[0138] Guide housings 350 and 360 are used to guide the sliding module, and include an upper guide housing 350 and a lower guide housing 360. A sliding module is mounted between the upper guide housing 350 and the lower guide housing 360, and can slide in the lateral direction (Y direction).

[0139] A second guide protrusion 332 of the sliding module is placed in the second guide groove 352 that penetrates the upper surface of the upper guide housing 350, so that the sliding module can move linearly within a specified range. A first guide protrusion 342 of the sliding module is placed in the first guide groove 362 that penetrates the lower surface of the lower guide housing 360, so that the sliding module can move linearly within a specified range.

[0140] The guide housings 350 and 360 are provided with flanges 303 (flanges 353 and flanges 363) extending vertically around the periphery of the module connecting pin 322. The flanges 303 have the same thickness, extend vertically (Z direction) and connect with the flange, and have grooves extending vertically (Z direction) on their inner sides.

[0141] Furthermore, around the main connecting pins 135 and 136, grooves 143a and 143b are provided in the upper module 100 of the main body 10 to engage with the flanges 303 (flanges 353 and 363). The lower entrances of the grooves 143a and 143b are open, while the upper entrances are closed. Therefore, the flanges 303 can be slid into the grooves from bottom to top through the lower entrances of the open grooves 143a and 143b to install the temperature measurement module. A hook 354 is provided on the upper part of the main body side of the upper guide housing 350. If the flanges 353 and 363 are fully inserted into the grooves, the hook 354 will be placed in the hook slots 144a and 144b of the upper housing 140, thereby preventing the temperature sensor module from detaching downwards.

[0142] When temperature measurement modules 300 and 400 are not installed, the cover flanges 510a and 520a can be inserted into the open grooves 143a and 143b (see reference). Figure 4 and Figure 5 The lower end of the cover is slidably inserted into the groove from bottom to top, thereby installing the cover. The cover is provided with cover hooks 510b and 520b. If the cover flanges 510a and 520a are fully inserted into the groove, the cover hooks 510b and 520b will be placed in the hook grooves 144a and 144b of the upper housing 140, thereby preventing the cover from falling off.

[0143] Micro-grooves 331 are formed on the upper surface of the sliding module, and multiple micro-grooves 331 are formed along the transverse direction (Y direction). Furthermore, on the upper surface of the sliding module, multiple characters indicating the specifications of the Molded Case Circuit Brake (MCCB) are printed or engraved next to the multiple micro-grooves 331, the number of characters being the same as the number of micro-grooves 331. For example, the characters are engraved as 60A, 125A, and 250A, respectively.

[0144] Furthermore, a cantilever 351 is provided on the upper part of the guide housing. The cantilever 351 also extends laterally (in the Y direction), and a protrusion 351a is formed on the lower part of its front end. The protrusion 351a is placed in one of the micro-grooves 331. When the user adjusts the position of the sliding module, the protrusion 351a of the cantilever 351 can be located in one of the micro-grooves 331.

[0145] Furthermore, a confirmation window 356 is formed on the upper part of the guide housing. The confirmation window 356 is used to expose one of a plurality of characters. For example, according to the micro groove 331 where the protrusion 351a is placed, one of 60A, 125A and 250A can be observed through the confirmation window 356.

[0146] According to an embodiment of the present invention, the temperature measurement module has the following effect: since the position of the temperature sensor 311 extending from the main body 10 can be adjusted, it can adapt to various specifications of power line spacing (various specifications of plastic-cased circuit brakes (MCCBs)) to detect the temperature of external power lines.

[0147] Furthermore, the temperature measurement module according to an embodiment of the present invention has the following effect: the position of the temperature sensor 311 can be easily set according to the specifications of the plastic case circuit brake (MCCB), so that the temperature sensor 311 is accurately located above the power line.

[0148] Figure 13 The diagram illustrates a split-type measuring device according to an embodiment of the present invention. Figure 14 The diagram illustrates, schematically, the state in which a split-type measuring device according to an embodiment of the present invention is installed on multiple three-phase three-wire power lines. Figure 15 Part (a) is a schematic diagram showing the state in which a split-type measuring device according to an embodiment of the present invention is installed on two single-phase power lines. Figure 15 Part (b) is a schematic diagram showing the state of a split measuring device according to an embodiment of the present invention installed on a three-phase four-wire power line.

[0149] The split-type measuring device 10 measures the first power line using a first ring core composed of a first upper core 111 and a first lower core 211. Figure 14 4A in part (a), Figure 14 The current in 4B of part (b) is measured using the second ring core composed of the second upper core 121 and the second lower core 221, and the second power line is measured. Figure 14 4B in part (a), Figure 14 The current in part (b) is 4C.

[0150] The present invention is characterized in that a pair of first contact areas 11a and 11b of the first upper core 111 and the first lower core 211 that are in contact with each other, and a pair of second contact areas 12a and 12b of the second upper core 121 and the second lower core 221 that are in contact with each other are spaced apart from each other in the direction of extension of the first power line and the second power line, that is, spaced apart from each other in the extension direction (X direction).

[0151] A pair of first contact regions 11a and 11b includes a first-1 contact region 11a near the first side and a first-2 contact region 11b on its inner side (i.e., center). Since the pair of first contact regions formed on the same annular core are naturally located at the same position in the extending direction (X direction). A pair of second contact regions 12a and 12b includes a second-1 contact region 12a near the second side and a second-2 contact region 12b on its inner side (i.e., center). Since the pair of second contact regions formed on the same annular core are naturally located at the same position in the extending direction (X direction).

[0152] Furthermore, preferably, the first-second contact area 11b and the second-second contact area 12b are located at the same position in the transverse (Y direction). Figure 7 As shown, the first-second contact area 11b and the second-second contact area 12b located at the same position in the lateral direction (Y direction) can make the design of the insertion part 151 easier and optimize the lateral width of the device.

[0153] like Figure 13 As shown, the first contact area and the second contact area are sufficiently separated by a distance L in the extending direction. This separation can be achieved very easily by the split measuring device of the present invention.

[0154] The split-type measuring device according to an embodiment of the present invention is characterized in that the first annular core and the second annular core are spaced apart from each other in the direction in which the first power line and the second power line extend, that is, spaced apart from each other in the extension direction (X direction).

[0155] like Figure 1 As shown, according to the existing split-type measuring device, the three annular cores are not separated at all in the extension direction (X direction) and are set at the same position in the extension direction (X direction).

[0156] The split-type measuring device according to the present invention has the following advantages: it facilitates the arrangement of multiple contact areas of the core to be sufficiently separated so that they are not adjacent to each other. Therefore, interference between contact areas and interference with power lines can be minimized, thereby further improving the measurement accuracy compared to existing split-type measuring devices. This overcomes the limitations of existing split-type measuring devices in terms of measurement accuracy.

[0157] According to the split-type measuring device of the present invention, a pair of first contact areas 11a, 11b and a pair of second contact areas 12a, 12b are quadrilateral areas. Preferably, the lateral width W1 perpendicular to the extension direction should be greater than 0.5 times the width W2 in the extension direction and less than 2 times the width in the extension direction. More preferably, the lateral width W1 is the same as the width W2 in the extension direction.

[0158] In a split-type measuring device according to an embodiment of the present invention, the separation distance L between a pair of first contact areas and a pair of second contact areas in the extending direction is more than 3.4 times larger than the lateral width W1 of the first contact area and the second contact area perpendicular to the extending direction.

[0159] Figure 17 To illustrate the simulated situation, Figure 17 Part (a) is similar to the prior art, with the two cores (i.e., current transformers (CTs)) laterally spaced, while, as in the embodiments of the present invention, Figure 17 Part (b) shows two cores (current transformers (CTs)) spaced apart along the extension direction.

[0160] The current flowing in the power line (busbar) is 60A. Figure 17 In part (a), the lateral spacing M1 between the cores (i.e., the spacing between contact areas) is 5 mm. Figure 17 In part (b), the spacing M2 between the cores in the extending direction (i.e., the spacing between the contact areas) is 5 mm, the cross-sectional dimensions of the core and the contact area are 6×6 mm, the height H1 of the core is 51.3 mm, the width H2 of the core is 31.0 mm, the number of winding turns is 1500, and the diameter of the winding is 0.16 mm.

[0161] Figure 18 and Figure 19 To visually display a graph of the magnetic flux density (peak value) in adjacent cores (current transformers (CTs)), Figure 18 For based on Figure 17 The diagram showing the settings of part (a) (separated horizontally). Figure 19 For based on Figure 17 The diagram shows the setup of part (b) (separated by the extension direction).

[0162] Figure 20 and Figure 21 A graph representing the crosstalk ratio based on the spacing between cores (current transformers (CTs)). Figure 20 For based on Figure 17 The diagram showing the settings of part (a) (separated horizontally). Figure 21 For based on Figure 17 The diagram shows the setup of part (b) (separated by the extension direction).

[0163] It can be observed that when the spacing between cores is the same, the crosstalk ratio is lower when the cores are arranged in the extending direction (front-back direction) compared to the case where two cores are arranged laterally. Among all spacing distances of 5mm, 10mm, 20mm, 30mm, and 40mm, the crosstalk ratio when arranged in the extending direction is lower than that when arranged laterally, making it superior. With the same spacing between current transformers (CTs), the crosstalk ratio is lower when two current transformers (CTs) are arranged front-back compared to the case where two current transformers (CTs) are side-by-side. When two current transformers (CTs) are located in the direction of movement (front-back movement) and the spacing between the two current transformers (CTs) is greater than 20mm, the crosstalk ratio is extremely low, approximately between 0.165% and 0.17%.

[0164] Figure 22 This is a schematic diagram illustrating a simulation conducted to understand the separation distance that is almost unaffected by crosstalk. Figure 22 Part (a) and Figure 22 Part (b) arranges a pair of cores (current transformers (CTs)) along the extension direction, in Figure 22 In part (a), the power line passes through the left core (current transformer (CT)). Figure 22 In part (b), the power line passes through the right core (current transformer (CT)). Figure 22 Part (c) and Figure 22 Part (d) only constitutes one core (current transformer (CT)). Figure 22 In part (c), the power line through core (current transformer (CT)), Figure 22 Section (d) shows a simulation of the power line located in a space without cores (current transformers (CTs)).

[0165] In the simulation, the current flowing in the power line (busbar) is 60A, and other conditions are the same as... Figure 17 The conditions are the same.

[0166] Figure 23 A table showing the output voltage and crosstalk ratio is provided. Figure 23 The table in part (a) is in Figure 22 Part (a) and Figure 22 The output voltage and crosstalk ratio obtained from the settings in part (b) Figure 23 The table in part (b) is in Figure 22 Part (c) and Figure 22The output voltage and crosstalk ratio obtained from the settings in section (d).

[0167] If one current transformer (CT) is excluded, the crosstalk ratio is 0.161%, which is the case where there is no influence from adjacent current transformers (CTs). However, when two current transformers (CTs) are separated, the crosstalk ratio is 0.166%, according to... Figure 21 The simulation results show that when the spacing exceeds 20mm, the crosstalk ratio is less than 0.17%. Therefore, it can be considered that when the spacing between two current transformers (CTs) is at least 20mm, adjacent current transformers (CTs) are almost unaffected by crosstalk. When the two cores are arranged along the mutual extension direction, starting from a spacing of 20mm or more between the cores, adjacent cores are almost unaffected by crosstalk.

[0168] like Figure 1 As shown, in existing split-type measuring devices, the width of the contact area (refer to...) Figure 1 The width of W0 in the middle can only be relatively narrow. Therefore, when the upper module is combined with the lower module, even if there is a slight misalignment between the upper core and the lower core, there is a risk that the contact area may be greatly reduced.

[0169] In existing split-type measuring devices, two contact areas need to be set simultaneously within the distance (lateral distance) between two power lines. However, according to the split-type measuring device of the present invention, only one contact area needs to be set within the same distance, thus greatly increasing the lateral width of the contact area.

[0170] Therefore, the split-type measuring device according to the present invention has the following advantages: it facilitates increasing the lateral width of the contact area, and even if there is a misalignment between the upper core and the lower core, the decrease in the contact area can be significantly reduced.

[0171] like Figure 14 As shown, in a three-phase three-wire power line, the split-type measuring device (main body) of the present invention is applied to two adjacent power lines to measure the current of the three-phase three-wire power line by using the first ring core and the second ring core respectively.

[0172] As a single, split-type measuring device proposed in this invention, it can measure the current of a three-phase circuit brake (MCCB) (the power line connected to the three-phase circuit brake (MCCB)). Even if one phase is not measured in the three-phase current measurement, since the sum of the three-phase currents is zero, one phase can be calculated from two phases, thus eliminating the need for hardware to measure the remaining phase. Due to the simplicity of the circuit brake (MCCB) structure, it can be selected... Figure 14 The measurement method shown in part (a) or Figure 14 The measurement method shown in part (b) constitutes the measurement method.

[0173] like Figure 15 As shown in part (a), current measurements of two adjacent single-phase power lines in two pairs of single-phase power lines connected to two circuit brakes (MCCBs) can be performed simultaneously by using the first and second ring cores included in a single split-type measuring device.

[0174] In a continuous single-phase circuit brake (MCCB) structure with the same capacity, a separate measuring device can be used to measure the current of one circuit (power line) of each circuit brake (MCCB) in order to measure the current. This allows for the measurement of two single-phase circuit brakes (MCCBs), thus reducing the panel manufacturing cost.

[0175] like Figure 15 As shown in part (b), if the split measuring device of the present invention is used, for a three-phase four-wire circuit brake (MCCB) and power lines, the first body 10A can measure the current of two of the four power lines, and the second body 10B can measure the current of the remaining two of the four power lines.

[0176] In a three-phase four-wire system, the current in all four circuits (power lines) needs to be measured independently, making it impossible to use measuring devices designed for three-phase three-wire systems. Therefore, in the past, products for three-phase four-wire measurement had to be manufactured and supplied separately. However, the split-type measuring device proposed according to this invention allows direct use of split-type measuring devices applicable to both single-phase and three-phase three-wire circuits, offering the advantage of being able to handle three-phase four-wire structures with two separate measuring devices.

[0177] The main body 10, which combines the upper and lower modules, is characterized by having protruding and recessed portions on both sides (horizontally) when viewed from above. Figure 24 or Figure 25 The shape shown. In the main body 10, where the upper and lower modules are combined, a protruding portion P1 is formed by connecting on the first horizontal side (see reference). Figure 13The protruding portion P2 and the recessed portion Q2 are connected to the second side in the transverse direction opposite to the first side. The recessed portion Q2 of the second side is formed on the opposite side of the protruding portion P1 of the first side, and the protruding portion P2 of the second side is formed on the opposite side of the recessed portion Q1 of the first side.

[0178] Moreover, such as Figure 15 As shown in the example of part (b), when the two bodies 10A and 10B are arranged adjacent to each other, the protruding portion of the second body is received in the recessed portion of the first body, and the protruding portion of the first body is received in the recessed portion of the second body. Moreover, a portion of the first annular core is located inside the protruding portion P1 on the first side, and a portion of the second annular core is located inside the protruding portion P2 on the second side.

[0179] The split-type measuring device according to the present invention has the following effect: protruding and recessed portions are formed on the lateral side. By aligning each protruding portion with the recessed portion on the opposite side, multiple split-type measuring devices can be easily applied in situations such as the application of a three-phase four-wire system and the need to connect and install split-type measuring devices.

[0180] Figure 16 The diagram illustrates, schematically, the temperature measurement module installed in the main body of a split-type measuring device according to an embodiment of the present invention. Figure 16 Part (a) and Figure 16 Part (b) shows different examples installed on a three-phase three-wire power line. Figure 16 Section (c) shows an example installed on two pairs of single-phase power lines.

[0181] A first temperature measurement module 300 can be installed (integrated) on the first side of the main body 10, and a second temperature measurement module 400 can be installed (integrated) on the second side.

[0182] like Figure 16 As shown in part (a), for power line 4C in a three-phase power line that does not penetrate the main body 10, the temperature can be detected using a temperature sensor 411 of a temperature measurement module 400 installed separately on the second side, or as... Figure 16 As shown in part (b), for power line 4A in a three-phase power line that does not penetrate the main body 10, the temperature can be detected by temperature sensor 311 of temperature measurement module 300 installed separately on the first side.

[0183] like Figure 16As shown in part (c), for power line 5A, which is one of the two power lines that does not pass through the outer side of the main body 10 in the two pairs of single-phase power lines, the temperature is detected by temperature sensor 311 installed on the first side of the temperature measurement module 300, and for power line 5D, the temperature is detected by temperature sensor 411 installed on the second side of the temperature measurement module 400.

[0184] According to an embodiment of the present invention, a split-type measuring device has the following advantages: users can assemble a temperature measuring module by disassembly and reassembly, thus enabling temperature detection even for adjacent power lines that are not connected to the main body. Figure 15 In the application shown in part (b), the same main body can also be used in applications where the temperature measurement module is disassembled and the main body is connected.

Claims

1. A split-type measuring device, comprising: The first ring core forms a magnetic closed loop around the first power line and consists of the first upper core and the first lower core. as well as The second ring core forms a magnetic closed loop around the second power line, and consists of the second upper core and the second lower core. The upper module and the lower module can be joined and separated. The upper module includes an upper outer shell for housing the first upper core and the second upper core, and the lower module includes a lower outer shell for housing the first lower core and the second lower core. The first ring core is used to measure the current of the first power line, and the second ring core is used to measure the current of the second power line, wherein... The first ring core and the second ring core are spaced apart from each other in the direction in which the first power line and the second power line extend, that is, they are spaced apart from each other in the direction of extension.

2. A split-type measuring device, comprising: The first ring core forms a magnetic closed loop around the first power line and consists of the first upper core and the first lower core. as well as The second ring core forms a magnetic closed loop around the second power line, and consists of the second upper core and the second lower core. The upper module and the lower module can be joined and separated. The upper module includes an upper outer shell for housing the first upper core and the second upper core, and the lower module includes a lower outer shell for housing the first lower core and the second lower core. The first ring core is used to measure the current of the first power line, and the second ring core is used to measure the current of the second power line, wherein... The pair of first contact areas where the first upper core and the first lower core contact each other and the pair of second contact areas where the second upper core and the second lower core contact each other are separated from each other in the direction in which the first power line and the second power line extend, that is, they are separated from each other in the direction of extension.

3. The split-type measuring device according to claim 2, characterized in that, The aforementioned pair of first contact areas and the aforementioned pair of second contact areas are quadrilateral regions, and the lateral width perpendicular to the aforementioned extension direction is greater than 0.5 times the width of the aforementioned extension direction and less than 2 times the width of the aforementioned extension direction.

4. The split-type measuring device according to claim 2, characterized in that, The distance (L) between the pair of first contact areas and the pair of second contact areas in the aforementioned extending direction is 20 mm or more.

5. The split-type measuring device according to claim 1 or 2, characterized in that, When viewed from above, the main body, which combines the upper module and the lower module, presents a shape with parts protruding from both sides.

6. The split-type measuring device according to claim 1 or 2, characterized in that, In the main body where the upper module and the lower module are combined, a protruding portion and a recessed portion are formed by connecting on the first side, and a protruding portion and a recessed portion are formed by connecting on the second side opposite to the first side. A recessed portion of the second side is formed on the opposite side of the protruding portion of the first side, and a protruding portion of the second side is formed on the opposite side of the recessed portion of the first side.

7. The split-type measuring device according to claim 6, characterized in that, When the two aforementioned main bodies are arranged adjacent to each other, the protruding portion of the second main body is received in the recessed portion of the first main body, and the protruding portion of the first main body is received in the recessed portion of the second main body.

8. The split-type measuring device according to claim 2, characterized in that, The upper part of the aforementioned lower outer casing includes: The first cylindrical wall is inserted in a rectangular cylindrical shape to surround the first-1 contact area near the side of the pair of first contact areas mentioned above; and The second cylindrical wall is inserted in a rectangular cylindrical shape to surround the second-1 contact area near the side of the pair of second contact areas mentioned above.

9. The split-type measuring device according to claim 2, characterized in that, A third cylindrical wall is provided on the upper part of the lower outer shell. The third cylindrical wall is inserted into a rectangular tube shape to surround the first-2 contact area and the second-2 contact area. The first-2 contact area is the central contact area among the pair of first contact areas, and the second-2 contact area is the central contact area among the pair of second contact areas.

10. The split-type measuring device according to claim 9, characterized in that, An insertion part is provided at the lower part of the aforementioned upper outer shell, which is inserted and fitted against the aforementioned third cylindrical wall and inserted downwards. Inside the third cylindrical wall, a key plate is inserted in a direction perpendicular to the third cylindrical wall. The key plate is inserted into the key groove of the insertion part to help the upper module and the lower module fit together.

11. The split-type measuring device according to claim 1 or 2, characterized in that, The combined upper and lower outer shells have a first through hole through which the first power line passes and a second through hole through which the second power line passes. The aforementioned upper module also includes: The first temperature sensor, housed in the upper housing, detects the temperature of the first power line by being positioned above the first line through-hole; and The second temperature sensor, housed in the upper housing, detects the temperature of the second power line by being positioned above the second line through hole.

12. The split-type measuring device according to claim 1 or 2, characterized in that, include: The first temperature measurement module, which can be detachably attached to the first side of the upper module, is used to detect the temperature of adjacent power lines that are not connected; and The second temperature measurement module can be detachably attached to the upper module on the second side of the upper module for detecting the temperature of adjacent power lines that are not connected. The second side is the opposite side of the first side.

13. The split-type measuring device according to claim 12, characterized in that, The first temperature measurement module and the second temperature measurement module mentioned above each include: The module connecting pin can be connected to the main connecting pin of the upper module mentioned above; A temperature sensor, capable of being moved laterally, is used to detect the temperature of power lines facing downwards; and A flexible printed circuit board is disposed between the temperature sensor and the module connection pin, forming a path for electrical signals.

14. The split-type measuring device according to claim 13, characterized in that, include: The sliding module, equipped with the aforementioned temperature sensor, has a window or lens on its lower surface that allows detection light to pass through; as well as The guide housing is used to guide the sliding module to slide.

15. The split-type measuring device according to claim 14, characterized in that, include: Micro-grooves are formed on the upper surface of the sliding module, and multiple micro-grooves are formed along the transverse direction. as well as A cantilever, disposed on the upper part of the aforementioned guide housing, extends laterally as described above, and has a protrusion formed at the lower part of its front end, the protrusion being placed in one of the aforementioned micro-grooves.

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