An indoor current transformer
By designing an auxiliary mechanism, the main body of the current transformer can slide horizontally, which solves the problem of limited operation of indoor current transformers in power cabinets and improves the convenience of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHIJIAZHUANG HUILING TRANSFORMER CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-06-16
Smart Images

Figure CN224366627U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of current transformers, and in particular to an indoor current transformer. Background Technology
[0002] A current transformer is a device that converts a large current on the primary side into a small current on the secondary side. It is commonly used for measurement, metering, and protection in power systems. There are various types of current transformers, including indoor current transformers.
[0003] Existing indoor current transformers typically include a housing, wiring harness connectors, and a mounting plate. The wiring harness connectors are located on the housing, and the mounting plate is located inside the housing. The mounting plate usually has mounting holes, which are then used to install the indoor current transformer in a designated location for use.
[0004] However, indoor current transformers are usually installed together with various other devices inside electrical cabinets. When performing certain operations on indoor current transformers, adjacent devices often block the tools, restricting the operation. Therefore, it is necessary to slide the indoor current transformer out of its installation position. Utility Model Content
[0005] The purpose of this invention is to provide an indoor current transformer to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an indoor current transformer, comprising:
[0007] The current transformer body has a mounting plate fixedly connected to its bottom;
[0008] An auxiliary mechanism, located at the bottom of the mounting plate, is used to allow the current transformer body to slide out horizontally. The auxiliary mechanism includes:
[0009] An auxiliary plate, located below the mounting plate;
[0010] A connector, located between the auxiliary plate and the mounting plate, is used to lock the mounting position of the current transformer body;
[0011] A sliding assembly located on top of the auxiliary plate.
[0012] Preferably, the connector includes:
[0013] A fixing plate, which is located at the bottom of the mounting plate;
[0014] A positioning plate, which is fixedly connected to the bottom of the mounting plate and is located on the side of the fixed plate;
[0015] The mounting bolt is threadedly connected to the side of the positioning plate, and one end of the mounting bolt is threadedly connected to the fixing plate.
[0016] A positioning seat is fixedly connected to the side of the auxiliary plate.
[0017] Preferably, the sliding component includes:
[0018] The fixing block has a mounting groove on the top of the auxiliary plate and is located inside the mounting groove.
[0019] A sliding frame, which is slidably inserted into the interior of the mounting slot;
[0020] A support plate is fixedly connected to the side of the fixed block, and the support plate is slidably inserted into the inner cavity of the sliding frame.
[0021] Preferably, the sliding component further includes:
[0022] A positioning bolt, the positioning bolt being threadedly inserted into the top of the fixing block, and one end of the positioning bolt being threadedly inserted into the inner wall of the mounting groove;
[0023] A positioning element, which is located on top of the auxiliary plate.
[0024] Preferably, the positioning element includes:
[0025] A connecting frame, which is fixedly connected to the top of an adjacent sliding frame;
[0026] A threaded seat, which is fixedly connected to the top of the auxiliary plate;
[0027] A locking post is located on the connecting frame and is threadedly connected to the inner cavity of the threaded seat.
[0028] Preferably, the top of the connecting frame has a through hole, the locking pin is slidably inserted into the inner cavity of the through hole, and an operating rod is fixedly connected to the outside of the locking pin.
[0029] The technical effects and advantages of this utility model are as follows:
[0030] This utility model utilizes the cooperation of an auxiliary plate, a fixed plate, a positioning plate, a fixing block, a sliding frame, a support plate, and a positioning component. The auxiliary plate supports the mounting plate through the fixed plate and the positioning plate, thereby supporting the main body of the current transformer. The sliding frame drives the fixed plate to slide horizontally on the auxiliary plate, which facilitates the horizontal sliding of the main body of the current transformer. This allows the main body of the current transformer to slide forward from the installation position, away from adjacent devices, making it easier to operate the main body of the current transformer. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0032] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle.
[0033] Figure 3 This is a schematic diagram of the sliding frame structure of this utility model.
[0034] In the figure: 1. Current transformer body; 2. Mounting plate; 3. Auxiliary mechanism; 31. Auxiliary plate; 32. Fixing plate; 33. Positioning plate; 34. Fixing block; 35. Sliding frame; 36. Support plate; 37. Connecting frame; 38. Threaded seat; 39. Locking column; 310. Positioning seat. Detailed Implementation
[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0036] This utility model provides, for example Figure 1-3 The image shows an indoor current transformer.
[0037] Example 1
[0038] The current transformer includes a current transformer body 1 and an auxiliary mechanism 3. The current transformer body 1 consists of an iron core made of stacked silicon steel sheets, used for magnetic conduction and transmission of alternating magnetic fields; a primary winding with fewer turns, used in series in the circuit under test to carry the measured current; a secondary winding with more turns, used for closed connection to a measuring or protection device, outputting a current signal proportional to the primary current; insulating material used to isolate the winding from the iron core, between the windings, and from the outer casing to ensure electrical safety; and an outer casing used to provide mechanical protection and fix the internal structure. The current transformer body 1 is an epoxy resin cast insulated, fully enclosed, pillar-type current transformer, suitable for AC power systems with a rated frequency of 50 or 60 Hz and a rated voltage of 10 kV and below, used for current measurement, energy metering, and relay protection. A mounting plate 2 is fixedly connected to the bottom of the current transformer body 1, which helps to support the current transformer body 1 and facilitates its installation. The auxiliary mechanism 3 is located at the bottom of the mounting plate 2 and is used to allow the current transformer body 1 to slide out horizontally.
[0039] Furthermore, the auxiliary mechanism 3 includes an auxiliary plate 31, a connector, and a sliding assembly. The auxiliary plate 31 is convenient to be installed in a power cabinet or other location via the positioning seat 310, which facilitates the installation and fixing of the current transformer body 1. The auxiliary plate 31 is located below the mounting plate 2. The connector is located between the auxiliary plate 31 and the mounting plate 2. The connector is used to lock the installation position of the current transformer body 1. The sliding assembly is located on top of the auxiliary plate 31.
[0040] Specifically, the connecting components include a fixing plate 32, a positioning plate 33, mounting bolts, and a positioning seat 310. The fixing plate 32 is conducive to cooperating with the positioning plate 33, thereby providing a certain height support for the current transformer body 1, and also facilitates the sliding of the mounting plate 2. The positioning plate 33 is conducive to supporting the mounting plate 2 and is easy to fix to the fixing plate 32 by the mounting bolts, thereby realizing the installation of the current transformer body 1. The fixing plate 32 is located at the bottom of the mounting plate 2, and the positioning plate 33 is fixedly connected to the bottom of the mounting plate 2. The positioning plate 33 is located on the side of the fixing plate 32. The mounting bolts are threadedly connected to the side of the positioning plate 33, and one end of the mounting bolts is threadedly connected to the fixing plate 32. The positioning seat 310 is fixedly connected to the side of the auxiliary plate 31.
[0041] Specifically, the sliding assembly includes a fixed block 34, a sliding frame 35, and a support plate 36. The fixed block 34 facilitates the support plate 36 and its installation. The sliding frame 35 facilitates the movement of the fixed plate 32, which in turn facilitates the horizontal sliding of the mounting plate 2, allowing the current transformer body 1 to slide forward and out from between adjacent devices, thus facilitating operation of the current transformer body 1. The top of the auxiliary plate 31 has a mounting groove, the fixed block 34 is located inside the mounting groove, the sliding frame 35 is slidably inserted into the inside of the mounting groove, and the support plate 36 is fixedly connected to the side of the fixed block 34. The support plate 36 is slidably inserted into the inner cavity of the sliding frame 35.
[0042] More specifically, the sliding assembly also includes positioning bolts and positioning elements. The positioning bolts facilitate the installation and removal of the fixing block 34, which in turn facilitates the installation and removal of the support plate 36. The positioning bolts are threadedly connected to the top of the fixing block 34, and one end of the positioning bolts is threadedly connected to the inner wall of the mounting groove. The positioning elements are located on the top of the auxiliary plate 31.
[0043] Example 2
[0044] Based on Embodiment 1, the positioning component includes a connecting frame 37, a threaded seat 38, and a locking post 39. The connecting frame 37 is U-shaped and facilitates the series connection of two sliding frames 35, making it easy to pull the sliding frames 35. It also helps to limit and fix the connecting frame 37. The threaded seat 38 cooperates with the locking post 39, which helps to limit and protect the sliding frames 35 when they are stored on the auxiliary plate 31, preventing the current transformer body 1 from sliding arbitrarily. The connecting frame 37 is fixedly connected to the top of the adjacent sliding frames 35, the threaded seat 38 is fixedly connected to the top of the auxiliary plate 31, and the locking post 39 is located on the connecting frame 37. The locking post 39 is threadedly inserted into the inner cavity of the threaded seat 38. A through hole is opened at the top of the connecting frame 37, and the locking post 39 is slidably inserted into the inner cavity of the through hole. An operating rod is fixedly connected to the outside of the locking post 39, which facilitates the rotation of the locking post 39.
[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An indoor current transformer, characterized in that, include: A current transformer body (1) is provided, and a mounting plate (2) is fixedly connected to the bottom of the current transformer body (1). An auxiliary mechanism (3) is located at the bottom of the mounting plate (2). The auxiliary mechanism (3) is used to allow the current transformer body (1) to slide out horizontally. The auxiliary mechanism (3) includes: An auxiliary plate (31) is located below the mounting plate (2); A connector located between the auxiliary plate (31) and the mounting plate (2) is used to lock the mounting position of the current transformer body (1); A sliding assembly located on top of the auxiliary plate (31).
2. The indoor current transformer according to claim 1, characterized in that, The connector includes: A fixing plate (32) is located at the bottom of the mounting plate (2); Positioning plate (33), which is fixedly connected to the bottom of mounting plate (2) and is located on the side of fixing plate (32); The mounting bolt is threadedly connected to the side of the positioning plate (33), and one end of the mounting bolt is threadedly connected to the fixing plate (32). Positioning seat (310) is fixedly connected to the side of auxiliary plate (31).
3. An indoor current transformer according to claim 1, characterized in that, The sliding component includes: The fixing block (34) is located inside the mounting slot of the auxiliary plate (31). A sliding frame (35) is slidably inserted into the interior of the mounting groove; The support plate (36) is fixedly connected to the side of the fixed block (34), and the support plate (36) is slidably inserted into the inner cavity of the sliding frame (35).
4. An indoor current transformer according to claim 3, characterized in that, The sliding component also includes: A positioning bolt is threadedly inserted into the top of the fixing block (34), and one end of the positioning bolt is threadedly inserted into the inner wall of the mounting groove. A positioning element located on top of the auxiliary plate (31).
5. An indoor current transformer according to claim 4, characterized in that, The positioning element includes: A connecting frame (37) is fixedly connected to the top of an adjacent sliding frame (35); A threaded seat (38) is fixedly connected to the top of the auxiliary plate (31); Locking pin (39) is located on connecting frame (37) and is threadedly connected to the inner cavity of threaded seat (38).
6. An indoor current transformer according to claim 5, characterized in that, The top of the connecting frame (37) is provided with a through hole, and the locking pin (39) is slidably inserted into the inner cavity of the through hole. An operating rod is fixedly connected to the outside of the locking pin (39).