Built-in bypass structure of soft starter

Abstract

The utility model discloses a built-in bypass structure of a soft starter, and relates to the technical field of soft starters. Comprising a PCB, silicon controlled rectifiers and relays, three paths of silicon controlled rectifiers are installed on the back face of the PCB, three paths of relays are installed on the front face of the PCB, and the three paths of relays are installed over the three paths of silicon controlled rectifiers through terminals. According to the utility model, the three silicon controlled rectifier modules and the three bypass relays are arranged on the front and back surfaces of the PCB, so that the installation space of circuit design is greatly saved, and the installation time and consumables are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of soft starters, in particular to a built-in bypass structure of a soft starter. Background Art

[0002] A soft starter is a motor control device that integrates soft starting, soft stopping, light-load energy saving, and multi-function protection. It enables smooth, impact-free starting of the motor throughout the entire startup process, and can adjust various startup parameters, such as current limit and start time, based on the characteristics of the motor load.

[0003] Existing soft starters with built-in bypass structures have a non-compact component layout, resulting in a large overall size, making them unsuitable for use in space-constrained applications. The presence of numerous wiring harnesses not only complicates assembly but can also lead to higher failure rates and difficult maintenance. The large number of wiring harnesses and additional installation time increases production costs. The complex connections and large size increase installation time and costs. The use of additional wiring harnesses and installation materials increases material costs and environmental impact.

[0004] In summary, the utility model designs a built-in bypass structure of a soft starter. Utility Model Content

[0005] In response to the deficiencies in the existing technology, the purpose of the utility model is to provide a built-in bypass structure for a soft starter. By installing a three-way thyristor module and a three-way bypass relay on the front and back sides of a PCB, the installation space of the circuit design is greatly saved, and installation time and consumables are saved.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solution: a built-in bypass structure of a soft starter, including a PCB board, a thyristor and a relay, wherein three thyristors are installed on the back of the PCB board, and three relays are installed on the front of the PCB board, and the three relays are installed directly above the three thyristors through terminals.

[0007] Preferably, the relay is mounted on the terminal via an M5 screw.

[0008] Preferably, the thyristor is fixed to the radiator by screws.

[0009] Preferably, a safe distance is left between each phase of the alternating current on the PCB board.

[0010] Beneficial effects of the utility model:

[0011] 1. The utility model has a compact design and small size. The three-way thyristor module is on the back of the PCB, and the corresponding three-way relay is installed just above the thyristor (on the front of the PCB) through the terminal. This reduces the size of the PCB, removes the corresponding connecting harness, saves installation time and consumables, and greatly reduces production costs.

[0012] 2. After the product soft start is completed, the circuit is input through the terminal, passes through the relay, and then outputs through the terminal, without passing through the PCB board, which greatly extends the life of the PCB;

[0013] 3. A safe distance is left between each phase of AC power on the PCB board to prevent abnormal situations such as creepage and ensure product safety;

[0014] 4. The selection of relays and terminals can safely pass the maximum current of 90A, ensuring the safe operation of the product when large current occurs during operation;

[0015] 5. The thyristor module is installed on the back of the PCB and fixed to the radiator by screws. When the product is running, the heat dissipation reliability of the module is guaranteed, ensuring the reliable and stable operation of the soft starter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments;

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is a side view of the utility model;

[0019] Figure 3 This is a schematic diagram of a PCB board of the present invention. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] Reference Figure 1-3 This specific embodiment adopts the following technical solution: a built-in bypass structure of a soft starter, including a PCB board 1, a thyristor 2 and a relay 3. The three-way thyristor 2 is installed on the back of the PCB board 1, and the three-way relay 3 is installed on the front of the PCB board 1. The three-way relay is installed directly above the three-way thyristor 2 through a terminal 4.

[0022] It is worth noting that the relay 3 is mounted on the terminal 4 via the M5 screw 5.

[0023] It is worth noting that the thyristor 2 is fixed to the radiator by screws.

[0024] It is worth noting that a safe distance is left between each phase of the alternating current on the PCB board.

[0025] This embodiment operates in this manner: During soft start, current flows through the terminals to the thyristor module. The current only travels a few millimeters above the PCB, significantly reducing the burden on the PCB and extending its lifespan. After startup, the system enters bypass mode, where the current flows through the terminals and then to the relay before being output, bypassing the PCB. This significantly reduces the burden on the PCB and extends its lifespan.

[0026] In this specific embodiment, the three-way thyristor module and the three-way bypass relay are installed on the front and back sides of the PCB, which greatly saves the installation space of the circuit design, saves installation time and consumables.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A built-in bypass structure of a soft starter, characterized in that: The invention comprises a PCB board (1), a thyristor (2) and a relay (3), wherein the back of the PCB board (1) is provided with a three-way thyristor (2), the front of the PCB board (1) is provided with a three-way relay (3), and the three-way relay is provided directly above the three-way thyristor (2) via a terminal (4).

2. The built-in bypass structure of a soft starter according to claim 1, characterized in that: The relay (3) is mounted on the terminal (4) via an M5 screw (5).

3. The built-in bypass structure of a soft starter according to claim 1, characterized in that: The thyristor (2) is fixed on the radiator by screws.

4. The built-in bypass structure of a soft starter according to claim 1, characterized in that: A safe distance is left between each phase of alternating current on the PCB board (1).

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