Power distribution cabinet

Abstract

The utility model provides a power distribution cabinet. The power distribution cabinet comprises a cabinet body; the functional chamber of the cabinet body is divided into n sub-functional chambers by the first partition plates; the n feeder line metering units are arranged corresponding to the n sub-functional chambers, and each feeder line metering unit comprises an electric equipment wiring end and an incoming cable or a copper bar; each incoming cable or copper bar is electrically connected with the vertical bus channel; the m current transformers and the m feeder line metering units are correspondingly arranged, and current input from an incoming cable or a copper bar of each feeder line metering unit passes through the current transformer corresponding to the feeder line metering unit and then enters a terminal of the electric equipment; m is smaller than or equal to n, and incoming cables or copper bars of the other feeder metering units penetrate through the wire passing holes of the first partition plate and then are electrically connected with at least one current transformer. According to the utility model, the problem that the metering scheme of the power distribution cabinet cannot meet the requirements of users because the power consumption condition in the power distribution cabinet cannot be obtained in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a power distribution cabinet. Background Art

[0002] At present, with the increasing consumption of fossil energy, electricity has become the main energy required for the development of modern society.

[0003] However, during the operation of the distribution cabinet, as the power-consuming equipment changes, the power metering solution also needs to change accordingly. The current metering solution cannot meet the flexible and changing needs of users. Utility Model Content

[0004] The main purpose of the utility model is to provide a power distribution cabinet to solve the problem that the metering solution of the power distribution cabinet cannot meet the needs of users.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a power distribution cabinet, comprising: a cabinet body, having a functional chamber and a metering chamber; a plurality of first partitions, which are arranged at intervals along the height direction of the functional chamber to divide the functional chamber into n sub-functional chambers; at least one first partition is provided with a wire passing hole; n feeder metering units, which are arranged one-to-one corresponding to the n sub-functional chambers, and each feeder metering unit includes an electrical equipment terminal and an incoming cable or copper bus; a vertical bus channel, which is arranged in the cabinet body, and each incoming cable or copper bus is electrically connected to the vertical bus channel; m current transformers, which are arranged corresponding to the m feeder metering units, and the current input from the incoming cable or copper bus of the feeder metering unit enters the electrical equipment terminal after passing through the current transformer corresponding to the feeder metering unit; wherein, m≤n, and the incoming cables or copper buses of the remaining (nm) feeder metering units are electrically connected to at least one current transformer after passing through the wire passing hole.

[0006] Furthermore, each feeder metering unit further includes: a second partition, which is arranged in the sub-functional chamber to separate the sub-functional chamber into a component chamber and a transformer chamber; and the current transformer is arranged in the transformer chamber.

[0007] Furthermore, the cabinet also has a cable room located behind the functional chamber, and the vertical bus channel and the electrical equipment connection terminals are arranged in the cable room.

[0008] Furthermore, the power distribution cabinet also includes: a lead sealing plate connected to the vertical bus channel, so as to separate the inner cavity of the cabinet into a functional chamber and a cable chamber through the vertical bus channel and the lead sealing plate.

[0009] Furthermore, the power distribution cabinet also includes a first cabinet door and a second cabinet door, there are n first cabinet doors, the n first cabinet doors are arranged in a one-to-one correspondence with the n sub-functional chambers, the second cabinet door is arranged in correspondence with the metering chamber, each first cabinet door has a first installation port connected to the sub-functional chamber, and the second cabinet door has a second installation port connected to the metering chamber; the power distribution cabinet also includes: a first observation window, the first observation window is arranged at the first installation port, so as to observe the metering value of the current transformer corresponding to the first observation window; and / or, a second observation window, the second observation window is arranged at the second installation port, so as to observe the metering values ​​of all current transformers.

[0010] Furthermore, the power distribution cabinet further comprises: a label, which is arranged on the first cabinet door to mark the name and / or performance parameters of the electrical equipment; and / or a PEN line, which is arranged in the cable room.

[0011] Furthermore, the power distribution cabinet further includes a lead locks, which are arranged in one-to-one correspondence with the a first cabinet doors, and each lead lock is used to lock the first cabinet door corresponding thereto; wherein a≤n.

[0012] Furthermore, the power distribution cabinet also includes: m indicator lights, which are arranged one-to-one corresponding to the m current transformers; a control module, which is electrically connected to the indicator lights and the current transformers. When the current transformer is put into use, the control module controls the indicator lights corresponding to the current transformers to light up or flash.

[0013] Furthermore, the cabinet has a ventilation hole, and the ventilation hole is communicated with the metering chamber and at least one sub-functional chamber.

[0014] Furthermore, each feeder metering unit also includes: a switch, which is arranged between the current transformer and the connection terminal of the electrical equipment.

[0015] Applying the technical solution of the utility model, the power distribution cabinet includes a cabinet body, a plurality of first partitions, n feeder metering units, a vertical bus channel and m current transformers. The cabinet body has a functional chamber and a metering chamber. The plurality of first partitions are arranged at intervals along the height direction of the functional chamber to divide the functional chamber into n sub-functional chambers. A wire passing hole is provided on at least one first partition. The n feeder metering units are arranged one-to-one correspondingly to the n sub-functional chambers, and each feeder metering unit includes an electrical equipment terminal and an incoming cable or copper busbar. The vertical bus channel is arranged in the cabinet body, and each incoming cable or copper busbar is electrically connected to the vertical bus channel. The m current transformers are arranged correspondingly to the m feeder metering units, and the current input from the incoming cable or copper busbar of the feeder metering unit enters the electrical equipment terminal after passing through the current transformer corresponding to the feeder metering unit. Among them, m≤n, and the incoming cables or copper buses of the remaining (nm) feeder metering units are electrically connected to at least one current transformer after passing through the wire passing hole. In this way, each current transformer can measure the current of at least one electrical equipment electrically connected to it. When m=n, the number of current transformers is consistent with that of feeder metering units, and each current transformer measures the current of the electrical equipment in the feeder metering unit corresponding to and electrically connected to it. Each current transformer can also be electrically connected to the electrical equipment in at least two feeder metering units to measure the current of the electrical equipment in at least two feeder metering units; when m<n, m current transformers can be set in a one-to-one correspondence with m feeder metering units, and the incoming cables or copper bars of the remaining (nm) feeder metering units are passed through the wire holes and electrically connected to at least one current transformer to flexibly measure the power consumption of the electrical equipment in the cabinet, thereby solving the problem that the metering scheme of the distribution cabinet in the prior art cannot meet the needs of users, and realizing a flexible and changeable metering method of multi-circuit total and sub-circuit sub-metering (the number of metering circuits can be variable) to meet different metering needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A front view of an embodiment of a power distribution cabinet according to the utility model is shown;

[0018] Figure 2 Shows Figure 1 AA section view of the power distribution cabinet in the figure;

[0019] Figure 3 Shows Figure 1 Side view of the switchboard in Figure 1.

[0020] The above drawings include the following reference numerals:

[0021] 10. Cabinet; 11. Sub-function chamber; 111. Component chamber; 112. Transformer chamber; 12. Measuring chamber; 13. Cable chamber; 14. Ventilation hole; 15. Horizontal busbar chamber;

[0022] 20. First partition plate; 21. Wire hole;

[0023] 31. Connection terminal of electrical equipment; 32. Second partition;

[0024] 40. Vertical bus channel;

[0025] 50. Current transformer;

[0026] 61. First cabinet door; 62. Second cabinet door;

[0027] 71. First observation window; 72. Second observation window;

[0028] 80. Label;

[0029] 90. Lead sealing plate;

[0030] 100. Operating handle;

[0031] 110. Closing indication. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0034] In the present invention, unless otherwise specified, directional words such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0035] In order to solve the problem that the metering solution of the power distribution cabinet in the prior art cannot meet the user's needs, the present application provides a power distribution cabinet.

[0036] like Figures 1 to 3As shown, the power distribution cabinet includes a cabinet 10, a plurality of first partitions 20, n feeder metering units, a vertical bus channel 40 and m current transformers 50. The cabinet 10 has a functional chamber and a metering chamber 12. The plurality of first partitions 20 are arranged at intervals along the height direction of the functional chamber to divide the functional chamber into n sub-functional chambers 11; at least one first partition 20 is provided with a wire hole 21. The n feeder metering units are arranged one-to-one corresponding to the n sub-functional chambers 11, and each feeder metering unit includes an electrical equipment terminal 31 and an incoming cable or copper busbar. The vertical bus channel 40 is arranged in the cabinet 10, and each incoming cable or copper busbar is electrically connected to the vertical bus channel 40. The m current transformers 50 are arranged corresponding to the m feeder metering units, and the current input from the incoming cable or copper busbar of the feeder metering unit passes through the current transformer 50 corresponding to the feeder metering unit and enters the electrical equipment terminal 31. Among them, m≤n, and the incoming cables or copper bars of the remaining (nm) feeder metering units are electrically connected to at least one current transformer 50 after passing through the wire hole 21.

[0037] By applying the technical solution of this embodiment, each current transformer 50 can measure the current of at least one electrical equipment electrically connected thereto. When m=n, the number of current transformers 50 is consistent with that of feeder metering units, and each current transformer 50 measures the current of the electrical equipment in the feeder metering unit corresponding thereto and electrically connected thereto. Each current transformer 50 can also be electrically connected to the electrical equipment in at least two feeder metering units to measure the current of the electrical equipment in at least two feeder metering units. When m<n, m current transformers 50 can be arranged in a one-to-one correspondence with m feeder metering units, and the incoming cables or copper bars of the remaining (nm) feeder metering units are electrically connected to at least one current transformer 50 after passing through the wire holes 21, so as to flexibly measure the power consumption of the electrical equipment in the cabinet, thereby solving the problem that the metering solution of the distribution cabinet in the prior art cannot meet the needs of users, thereby realizing a flexible and changeable metering method of multi-circuit total and sub-circuit sub-metering (the number of metering circuits can be variable) to meet different metering needs.

[0038] In this embodiment, not only the number of metering feeder metering units and non-metering feeder metering units is flexible and changeable, but also total metering and sub-loop control of multi-loop feeders can be realized, and sub-loop metering and sub-loop control of multi-loop feeders can be realized to meet the user's flexible and changeable metering solutions and provide practical and effective data for energy efficiency assessment and energy conservation and emission reduction.

[0039] like Figure 1As shown, each feeder metering unit further includes a second partition 32. The second partition 32 is arranged in the sub-functional chamber 11 to separate the sub-functional chamber 11 into a component chamber 111 and a transformer chamber 112. The current transformer 50 is arranged in the transformer chamber 112. In this way, the above arrangement makes the structural layout in each feeder metering unit more reasonable and compact, and improves the space utilization.

[0040] Specifically, the second partition 32 divides the sub-functional chamber 11 into two parts (component chamber 111 and transformer chamber 112), the component chamber 111 is located in front of the transformer chamber 112, the front part is equipped with switches and secondary devices, and the rear part is equipped with a current transformer 50.

[0041] like Figure 2 and Figure 3 As shown, the cabinet 10 also has a cable chamber 13 located behind the functional chamber, and the vertical bus channel 40 and the electrical equipment terminal 31 are arranged in the cable chamber 13. In this way, the above arrangement makes the space layout in the cabinet more reasonable and compact, and improves the space utilization rate in the cabinet.

[0042] like Figure 1 As shown, the power distribution cabinet further includes a first cabinet door 61 and a second cabinet door 62, wherein there are n first cabinet doors 61, and the n first cabinet doors 61 are arranged one-to-one with the n sub-function chambers 11, and the second cabinet door 62 is arranged corresponding to the metering chamber 12, and each first cabinet door 61 has a first installation port connected to the sub-function chamber 11, and the second cabinet door 62 has a second installation port connected to the metering chamber 12. The power distribution cabinet further includes a first observation window 71 and / or a second observation window 72, and the first observation window 71 is arranged at the first installation port to observe the metering value of the current transformer 50 corresponding to the first observation window 71. The second observation window 72 is arranged at the second installation port to observe the metering values ​​of all current transformers 50. In this way, the above-mentioned arrangement of the first observation window 71 and / or the second observation window 72 facilitates the staff to obtain the metering values ​​of the sub-circuit and / or the total circuit, thereby improving the user experience.

[0043] In this embodiment, the power distribution cabinet further includes a first observation window 71 and a second observation window 72. The first observation window 71 is provided at the first installation opening to observe the metering value of the current transformer 50 corresponding to the first observation window 71. The second observation window 72 is provided at the second installation opening to observe the metering values ​​of all current transformers 50. The first observation window 71 is used to observe the metering value of the sub-loop feeder, and the second observation window 72 is used to observe the metering value of the main loop feeder.

[0044] Optionally, the power distribution cabinet further includes a lead locks, which are arranged one-to-one with a first cabinet door 61, and each lead lock is used to lock the first cabinet door 61 corresponding thereto; wherein a≤n. In this way, the above arrangement of the lead locks can lock the first cabinet door 61, thereby preventing non-staff members from accidentally opening the first cabinet door 61 and causing an electric shock accident.

[0045] Optionally, the power distribution cabinet further includes m indicator lights and a control module. The m indicator lights are arranged in one-to-one correspondence with the m current transformers 50. The control module is electrically connected to the indicator lights and the current transformers 50. When the current transformers 50 are put into use, the control module controls the indicator lights corresponding to the current transformers 50 to light up or flash. In this way, during the operation of the power distribution cabinet, the staff can obtain the operating status of each current transformer 50 through the indicator lights, thereby improving the user experience.

[0046] like Figure 1 As shown, the power distribution cabinet further includes a label 80 and / or a PEN line. The label 80 is set on the first cabinet door 61 to mark the name and / or performance parameters of the electrical equipment. The PEN line is set in the cable room 13. In this way, the staff can identify the name and / or performance parameters of the corresponding electrical equipment through the label 80. The PEN line plays a protective grounding role to avoid electric shock accidents.

[0047] Optionally, there are n labels 80 , and the n labels 80 are arranged in a one-to-one correspondence with the n first cabinet doors 61 .

[0048] like Figure 1 As shown, the cabinet 10 has a ventilation hole 14, which is connected to the metering chamber 12 and at least one sub-function chamber 11. In this way, the above-mentioned arrangement of the ventilation hole 14 can cool down the components in the cabinet 10, thereby preventing the temperature in the power distribution cabinet from being too high, thereby affecting the service life of the components or causing a fire.

[0049] Optionally, each feeder metering unit further includes a switch, wherein the switch is arranged between the current transformer 50 and the electrical equipment connection terminal 31. In this way, the switch is used to control the on / off state of the feeder loop, and further control the use state of the corresponding electrical equipment.

[0050] In this embodiment, the incoming cable or copper busbar of each feeder metering unit takes power from the vertical bus channel 40, passes through the current transformer 50, and is connected to the switch incoming side of the unit, and then connected to the power equipment terminal 31 from the switch outgoing side to complete the power feeding.

[0051] like Figure 2As shown, the power distribution cabinet further includes a lead sealing plate 90. The lead sealing plate 90 is connected to the vertical bus channel 40, so as to separate the inner cavity of the cabinet 10 into a functional chamber and a cable chamber 13 through the vertical bus channel 40 and the lead sealing plate 90. In this way, the above-mentioned setting of the lead sealing plate 90 ensures that the functional chamber and the cable chamber 13 are independently set and do not interfere with each other.

[0052] like Figure 1 As shown, the cabinet 10 further comprises a horizontal busbar chamber 15, which is located above the functional chamber and is used for placing the horizontal busbar.

[0053] like Figure 1 As shown, the power distribution cabinet further includes an operating handle 100 , which is connected to the switch so as to control the switch state of the switch by rotating the operating handle 100 .

[0054] like Figure 1 As shown, a closing indicator 110 is provided on the first cabinet door 61 .

[0055] In this embodiment, a wire hole 21 is provided on the first partition 20 between different feeder metering units to realize the total metering of multi-circuit feeders. The current transformer 50 is installed in the transformer room 112 of the circuit that needs total metering. The first observation window 71 is provided at the corresponding position of the first cabinet door 61, and a meter is installed inside. The incoming cable or copper bar of the feeder unit to be metered is powered from the vertical bus channel 40 corresponding to the feeder unit equipped with the current transformer 50, passes through the wire hole 21 after passing the current transformer 50, and is connected to the switch incoming side of the corresponding feeder metering unit, and then connected to the power equipment terminal 31 of the cable room of the corresponding feeder metering unit from the switch outgoing side to complete the feeding. The feeder units for total metering of multiple circuits all pass through the total metering transformer, so the total metering of multiple circuits can be completed by the cooperation between the meter installed at the corresponding position in the metering room and the total metering transformer.

[0056] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0057] The power distribution cabinet includes a cabinet body, a plurality of first partitions, n feeder metering units, a vertical bus channel and m current transformers. The cabinet body has a functional chamber and a metering chamber. The plurality of first partitions are arranged at intervals along the height direction of the functional chamber to divide the functional chamber into n sub-functional chambers. At least one first partition is provided with a wire-passing hole. The n feeder metering units are arranged one-to-one correspondingly to the n sub-functional chambers, and each feeder metering unit includes an electrical equipment terminal and an incoming cable or copper busbar. The vertical bus channel is arranged in the cabinet body, and each incoming cable or copper busbar is electrically connected to the vertical bus channel. The m current transformers are arranged correspondingly to the m feeder metering units, and the current input from the incoming cable or copper busbar of the feeder metering unit enters the electrical equipment terminal after passing through the current transformer corresponding to the feeder metering unit. Among them, m≤n, and the incoming cables or copper buses of the remaining (nm) feeder metering units are electrically connected to at least one current transformer after passing through the wire-passing hole. In this way, each current transformer can measure the current of at least one electrical equipment electrically connected to it. When m=n, the number of current transformers is consistent with that of feeder metering units, and each current transformer measures the current of the electrical equipment in the feeder metering unit corresponding to and electrically connected to it. Each current transformer can also be electrically connected to the electrical equipment in at least two feeder metering units to measure the current of the electrical equipment in at least two feeder metering units; when m<n, m current transformers can be set in a one-to-one correspondence with m feeder metering units, and the incoming cables or copper bars of the remaining (nm) feeder metering units are passed through the wire holes and electrically connected to at least one current transformer to flexibly measure the power consumption of the electrical equipment in the cabinet, thereby solving the problem that the metering scheme of the distribution cabinet in the prior art cannot meet the needs of users, and realizing a flexible and changeable metering method of multi-circuit total and sub-circuit sub-metering (the number of metering circuits can be variable) to meet different metering needs.

[0058] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0059] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0060] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0061] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A power distribution cabinet, characterized in that: include: A cabinet (10) having a functional chamber and a metering chamber (12); a plurality of first partitions (20), the plurality of first partitions (20) being arranged at intervals along the height direction of the functional chamber so as to divide the functional chamber into n sub-functional chambers (11); at least one of the first partitions (20) being provided with a wire hole (21); n feeder metering units are arranged in one-to-one correspondence with the n sub-functional chambers (11), each feeder metering unit comprising an electrical equipment connection terminal (31) and an incoming cable or copper busbar; A vertical bus channel (40) is arranged in the cabinet (10), and each of the incoming cables or copper bars is electrically connected to the vertical bus channel (40); m current transformers (50), the m current transformers (50) being arranged corresponding to the m feeder metering units, the current input from the incoming cable or copper busbar of the feeder metering unit passing through the current transformer (50) corresponding to the feeder metering unit and then entering the connection terminal (31) of the electrical equipment; wherein m≤n, the incoming cables or copper busbars of the remaining (nm) feeder metering units passing through the wire hole (21) are electrically connected to at least one current transformer (50).

2. The power distribution cabinet according to claim 1, characterized in that: Each of the feeder metering units further includes: A second partition (32), wherein the second partition (32) is arranged in the sub-functional chamber (11) to separate the sub-functional chamber (11) into a component chamber (111) and a transformer chamber (112); the current transformer (50) is arranged in the transformer chamber (112).

3. The power distribution cabinet according to claim 1, characterized in that: The cabinet (10) further comprises a cable chamber (13) located behind the functional chamber, and the vertical bus channel (40) and the electrical equipment connection terminal (31) are arranged in the cable chamber (13).

4. The power distribution cabinet according to claim 3, characterized in that: The power distribution cabinet also includes: A lead sealing plate (90) is connected to the vertical bus channel (40) so as to separate the inner cavity of the cabinet (10) into the functional chamber and the cable chamber (13) through the vertical bus channel (40) and the lead sealing plate (90).

5. The power distribution cabinet according to claim 3, characterized in that: The power distribution cabinet further comprises a first cabinet door (61) and a second cabinet door (62), wherein the number of the first cabinet doors (61) is n, and the n first cabinet doors (61) are arranged in a one-to-one correspondence with the n sub-functional chambers (11), and the second cabinet doors (62) are arranged in a corresponding manner with the metering chambers (12), and each of the first cabinet doors (61) has a first installation port communicating with the sub-functional chamber (11), and each of the second cabinet doors (62) has a second installation port communicating with the metering chamber (12); the power distribution cabinet further comprises: a first observation window (71), the first observation window (71) being arranged at the first installation opening, for observing a measurement value of a current transformer (50) corresponding to the first observation window (71); and / or, A second observation window (72), wherein the second observation window (72) is arranged at the second installation opening and is used for observing the measurement values ​​of all current transformers (50).

6. The power distribution cabinet according to claim 5, characterized in that: The power distribution cabinet also includes: a label (80), the label (80) being arranged on the first cabinet door (61) for marking the name and / or performance parameters of the electrical equipment; and / or, The PEN line is arranged in the cable chamber (13).

7. The power distribution cabinet according to claim 1, characterized in that: The power distribution cabinet further comprises a lead locks, which are arranged in one-to-one correspondence with a first cabinet doors (61), and each lead lock is used to lock the first cabinet door (61) corresponding thereto; wherein a≤n.

8. The power distribution cabinet according to claim 1, characterized in that: The power distribution cabinet also includes: m indicator lights, the m indicator lights being arranged in one-to-one correspondence with the m current transformers (50); A control module is electrically connected to the indicator light and the current transformer (50); when the current transformer (50) is put into use, the control module controls the indicator light corresponding to the current transformer (50) to light up or flash.

9. The power distribution cabinet according to any one of claims 1 to 8, characterized in that: The cabinet (10) has a ventilation hole (14), and the ventilation hole (14) is connected to the metering chamber (12) and at least one of the sub-functional chambers (11).

10. The power distribution cabinet according to any one of claims 1 to 8, characterized in that: Each of the feeder metering units further includes: A switch is arranged between the current transformer (50) and the electrical equipment connection terminal (31).

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