Novel low-voltage drawer unit test tool

Abstract

The utility model discloses a novel low-voltage drawer unit test tool in the field of 400V low-voltage drawer type switch cabinets and intelligent miniaturized box type substations in the power industry, which comprises a test tool box body, tool box body handles are rotatably connected to two sides of the test tool box body, a plurality of primary contact sockets are connected to the side surface of the test tool box body, and a plurality of secondary contact sockets are connected to the side surface of the test tool box body. The low-voltage drawer unit test tool comprises a test tool box body, the side surface of the test tool box body is connected with a secondary contact socket, the secondary contact socket is connected with an A switch drawer primary plug-in connection copper bar, and one side, far away from the primary contact socket and the secondary contact socket, of the test tool box body is connected with an opening indicating lamp. The tool has universality and simplicity, can enable drawer units of different specifications to complete the test work of drawers of different specifications under the condition that the drawer units of different specifications are not placed in a cabinet body, is provided with a handle, and can be suitable for different test environments.

Description

Technical Field

[0001] This utility model relates to the technical field of 400V low-voltage drawer-type switchgear and intelligent miniaturized box-type substation in the power industry, and in particular to a new type of low-voltage drawer unit test fixture. Background Technology

[0002] Currently, standard low-voltage drawer-type switchgear can be installed with drawer units of 200mm, 400mm, and 600mm height depending on the user's electrical load. Since the heights of the three drawer units are different, there is currently no universal testing fixture that can quickly test the three specifications of drawer units.

[0003] The current practice is to insert drawer units of different heights into their respective cabinets and conduct electrical tests on each unit separately, which is inefficient. Furthermore, since the standard low-voltage cabinet is 2200mm high and the drawer units are heavy, moving them up and down is inconvenient, resulting in high labor costs and slowing down work efficiency. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] The purpose of this utility model is to address the technical problems existing in the background art. This utility model proposes a novel low-pressure drawer unit testing fixture. This utility model designs a novel low-pressure drawer unit testing fixture, which is versatile and simple. It can enable the testing of drawer units of different specifications without placing them in the cabinet. The testing fixture is also designed with handles, making it suitable for different testing environments.

[0006] This utility model proposes a novel low-pressure drawer unit test fixture, including a test fixture box, with handles rotatably connected to both sides of the test fixture box, a plurality of primary contact sockets connected to the side of the test fixture box, and secondary contact sockets connected to the side of the test fixture box.

[0007] The secondary contact socket is connected to a copper busbar for primary plug-in connection of switch drawer A. The primary contact socket is electrically connected to a three-phase power supply. A closing indicator light is connected to the side of the test fixture box away from the primary and secondary contact sockets. An opening indicator light is connected to the side of the test fixture box away from the primary and secondary contact sockets. The closing indicator light and the opening indicator light are communicatively connected to the primary and secondary contact sockets. A fault indicator is connected to the test fixture box. The fault indicator is electrically connected to a wire, and the other end of the wire is electrically connected to the secondary contact socket.

[0008] By adopting the above technical solution, this solution can effectively reduce the difficulty of detection and maintenance of this device through the fault indicator, thereby improving the operation and maintenance efficiency of the staff through the fault codes and other data displayed by the fault indicator during actual use.

[0009] Preferably, the fault indicator is communicatively connected to the secondary contact socket via the wire, and the fault indicator is equipped with a display screen and a control button, the control button being connected to the secondary contact socket via the wire.

[0010] By adopting the above technical solution, this solution can effectively improve the operation and interaction efficiency of this device and reduce the operation difficulty of this device through the display screen and control buttons.

[0011] Preferably, the bottom of the test fixture box is provided with a mating groove, the inside of the mating groove is provided with a connecting hole, and the outer end face of the test fixture box is provided with an insulating component.

[0012] By adopting the above technical solution, this solution can effectively reduce the risk of short circuits in the outer casing of the device through the structure of the insulating components, thereby reducing the risk of electric shock to the staff.

[0013] Preferably, the copper busbar for connecting the primary plug-in of the A switch drawer has several connection ports, which are electrically connected to multiple primary contact sockets respectively. The primary contact sockets not connected to the copper busbar for connecting the primary plug-in of the A switch drawer are electrically connected to an external three-phase power supply.

[0014] By adopting the above technical solution, this solution can achieve the effect of external connection combination expansion of this device through multiple sets of primary contact sockets, thereby enabling this device to be combined and connected between multiple connectors according to actual usage requirements.

[0015] Preferably, the test fixture box has an air inlet window through the side, and a heat exchange fan is installed inside the test fixture box, with the air outlet of the heat exchange fan facing the air inlet window.

[0016] By adopting the above technical solution, this solution can improve the heat exchange efficiency of the device through the combination of air inlet window and heat exchange fan, thereby avoiding the risk of overheating at the connection of electrical equipment during use.

[0017] Preferably, the outer side of the secondary contact socket is provided with a waterproof seal, which is connected to the joint of the test fixture box. The edge structure of the primary contact socket is the same as that of the secondary contact socket.

[0018] By adopting the above technical solution, this solution can improve the safety and stability of the interface connection through waterproof sealing components.

[0019] In summary, this utility model has at least one of the following beneficial effects:

[0020] The test fixture housing is 640mm high and 840mm wide. Depending on the different positions of the primary and secondary connectors for drawer units with heights of 200mm, 400mm, and 600mm, the test fixture is designed with different primary and secondary connector positions, allowing all three types of drawer units to be inserted into the test fixture housing. Furthermore, the test fixture is equipped with yellow, red, and blue indicator lights, which can intuitively and accurately determine whether the "closed, open, and fault" signals of the switches inside the drawers are correct.

[0021] During use, push the sample directly into the test fixture housing. Introduce three-phase power from the power inlet at the rear of the housing. Rotate the handle on the drawer panel to perform the closing and opening operations. If the operation closes, the red light on the back of the fixture housing will illuminate, indicating correct closing. If the operation opens, the green light on the back of the fixture housing will illuminate, indicating correct opening. If the switch trips due to a fault, the yellow light on the back of the fixture housing will illuminate, indicating that the fault trip signal was transmitted correctly.

[0022] This low-pressure drawer unit testing fixture has a simple structure, is not restricted by the on-site installation environment, and is easy to operate. It is applicable to all specifications of drawer cable outlet units, greatly improving work efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a front view of an embodiment of a novel low-pressure drawer unit test fixture of the present invention;

[0025] Figure 2This is a side view of an embodiment of the present utility model;

[0026] Figure 3 A schematic diagram of a primary and secondary socket and a three-color indicator light;

[0027] Attached reference numerals: 1. Test fixture housing; 2. Primary contact socket; 3. Secondary contact socket; 4. Fixture housing handle; 5. Copper busbar for primary plug-in connection of 630A switch drawer; 6. Closing indicator light; 7. Opening indicator light; 8. Fault indicator; 9. Wire. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-3 The present invention will be described in further detail below.

[0029] Example 1, as Figures 1-3 As shown, in order to solve the existing problems, this utility model discloses a new type of low-pressure drawer unit test fixture, including a test fixture box 1, with tooling box handles 4 rotatably connected to both sides of the test fixture box 1, a plurality of primary contact sockets 2 connected to the side of the test fixture box 1, and secondary contact sockets 3 connected to the side of the test fixture box 1.

[0030] The secondary contact socket 3 is connected to a copper busbar 5 for primary plug-in connection of a 630A switch drawer. The primary contact socket 2 is electrically connected to a three-phase power supply. A closing indicator light 6 is connected to the side of the test fixture box 1 away from the primary contact socket 2 and the secondary contact socket 3. An opening indicator light 7 is connected to the side of the test fixture box 1 away from the primary contact socket 2 and the secondary contact socket 3. The closing indicator light 6 and the opening indicator light 7 are communicatively connected to the primary contact socket 2 and the secondary contact socket 3. A fault indicator 8 is connected to the test fixture box 1. The fault indicator 8 is electrically connected to a wire 9, and the other end of the wire 9 is electrically connected to the secondary contact socket 3.

[0031] The fault indicator 8 is communicatively connected to the secondary contact socket 3 via the wire 9. The fault indicator 8 is equipped with a display screen and a control button, and the control button is connected to the secondary contact socket 3 via the wire 9.

[0032] The bottom of the test fixture box 1 is provided with a docking groove, and a connecting hole is provided inside the docking groove. The outer end face of the test fixture box 1 is provided with an insulating component.

[0033] The copper busbar 5 for primary plug-in connection of the 630A switch drawer has several connection ports, which are electrically connected to multiple primary contact sockets 2 respectively. The primary contact sockets 2 not connected to the copper busbar 5 for primary plug-in connection of the 630A switch drawer are electrically connected to an external three-phase power supply.

[0034] The test fixture box 1 has an air inlet window through its side, and a heat exchange fan is installed inside the test fixture box 1 with the air outlet facing the air inlet window.

[0035] The specific working principle is as follows: The test fixture structure of this low-voltage drawer unit mainly includes a fixture box, a fixture box handle 4, a primary contact socket 2, a secondary contact socket 3, a closing indicator light 6, a closing indicator light 7, a fault indicator 8, and a copper busbar 5 for connecting the primary plug-in of the 630A switch drawer.

[0036] The installation sequence is as follows: fix the three primary contact sockets 2 and one secondary contact socket 3 to the rear panel of the fixture box with screws. Install the two fixture box handles 4 on both sides of the fixture box with screws. Install the closing indicator light 6, the opening indicator light 7, and the fault indicator 8 on an indicator light box. Fix the indicator light box to the back of the box with two screws. Connect the three indicator lights to the secondary contact sockets 3 with wires 9 to realize the display of closing signal, opening signal, and fault signal.

[0037] The tooling enclosure is used by inserting the 200mm, 400mm, and 600mm high drawer units one by one into the enclosure. After the drawer units are inserted, the primary and secondary plugs on the rear of the drawer units and the primary and secondary sockets on the rear panel of the enclosure will be tightly connected. During testing, simply connect the three-phase power supply to the primary plug on the back of the enclosure, and then rotate the handle on the drawer panel to perform the closing and opening operations. If the operation closes the circuit breaker, the red indicator light on the back of the enclosure will illuminate, indicating that the closing was correct. If the operation opens the circuit breaker, the green indicator light on the back of the enclosure will illuminate, indicating that the opening was correct. If the circuit breaker trips due to a fault, the yellow indicator light on the back of the enclosure will illuminate, indicating that the fault trip signal was transmitted correctly.

[0038] Example 2, as Figures 1-3 As shown, in this embodiment, in order to solve the existing problems, based on the same concept as the first embodiment above, this novel low-pressure drawer unit test fixture further includes: a waterproof seal is provided on the outer side of the secondary contact socket 3, the waterproof seal is connected to the joint of the test fixture box 1, and the structure at the edge of the primary contact socket 2 is the same as that of the secondary contact socket 3. 。

[0039] Because this new low-voltage drawer unit testing fixture has pre-installed the primary and secondary contact sockets 3 of three different specifications of drawer units (200mm, 400mm, and 600mm) inside the housing, it can be adapted to conduct power-on tests on drawers of different specifications, thus possessing extremely high versatility. Furthermore, it is equipped with yellow, green, and red tri-color indicator lights to indicate the three states of the drawer unit's switch, thus providing extremely high visibility.

[0040] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A novel low-pressure drawer unit test fixture, comprising a test fixture housing (1), characterized in that, The test fixture box (1) is rotatably connected to the two sides with fixture box handles (4), and the test fixture box (1) is connected to several primary contact sockets (2) on the side and secondary contact sockets (3) on the side. The secondary contact socket (3) is connected to a copper busbar (5) for primary plug-in connection of a 630A switch drawer. The primary contact socket (2) is electrically connected to a three-phase power supply. A closing indicator light (6) is connected to the side of the test fixture box (1) away from the primary contact socket (2) and the secondary contact socket (3). A closing indicator light (7) is connected to the side of the test fixture box (1) away from the primary contact socket (2) and the secondary contact socket (3). The closing indicator light (6) is communicatively connected to the primary contact socket (2) and the secondary contact socket (3). The closing indicator light (7) is communicatively connected to the primary contact socket (2) and the secondary contact socket (3). A fault indicator (8) is connected to the test fixture box (1). The fault indicator (8) is electrically connected to a wire (9). The other end of the wire (9) is electrically connected to the secondary contact socket (3).

2. The novel low-pressure drawer unit test fixture according to claim 1, characterized in that, The fault indicator (8) is communicatively connected to the secondary contact socket (3) via the wire (9). The fault indicator (8) is equipped with a display screen and a control button. The control button is connected to the secondary contact socket (3) via the wire (9).

3. A novel low voltage drawer unit test fixture according to claim 2, wherein, The test fixture box (1) has a docking groove at the bottom and a connecting hole inside the docking groove. The test fixture box (1) has an insulating component on its outer end face.

4. The novel low-pressure drawer unit test fixture according to claim 3, characterized in that, The copper busbar (5) for primary plug-in connection of the 630A switch drawer is provided with several connection ports. The several connection ports are electrically connected to several primary contact sockets (2). The primary contact sockets (2) not connected to the copper busbar (5) for primary plug-in connection of the 630A switch drawer are electrically connected to an external three-phase power supply.

5. A novel low voltage drawer unit test fixture according to claim 4, wherein, The test fixture box (1) has an air inlet window through its side, and a heat exchange fan is provided inside the test fixture box (1), with the air outlet of the heat exchange fan facing the air inlet window.

6. A novel low voltage drawer unit test fixture according to claim 5, wherein, The outer side of the secondary contact socket (3) is provided with a waterproof seal. The waterproof seal is connected to the joint of the test fixture box (1). The structure of the edge of the primary contact socket (2) is the same as that of the secondary contact socket (3).

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