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ที่ Chint Universal Transfer Switch LW5D16YH3/3 is a highperformance switch specifically designed for industrial control, suitable for scenarios such as voltage measurement and motor control. The following are its core information and application guidelines:
- Model Analysis and Core Parameters
- Model Meaning
LW5D: รหัสซีรีส์ (L transfer switch, W universal, 5 design serial number, D positioning type).
16: Rated thermal current 16A (applicable to AC15/DC13 loads).
YH3/3: Function code (YH voltage measurement, 3 3section contact system, 3 3 operation positions).
- Technical ParametersClick on the red text to view the
แรงดันไฟฟ้าที่ได้รับการจัดอันดับ: AC 380V/DC 220V.
Contact form: 3 independent sections of contacts, supporting threephase voltage switching (such as UAB, UBC, UCA).
Operation angle: Fourposition positioning at 0° (middle position), 90°, 180°, and 270°, and voltage switching is achieved by rotating the handle.
Certification: Complies with GB/T 14048.5 และไออีซี 6094751 มาตรฐาน, and has passed 3C certification (Certificate number: 2024010305685092).
- สถานการณ์การใช้งานทั่วไป
- Voltage Measurement
Used to switch the voltmeter in the power distribution cabinet to measure the threephase line voltage (such as UAB, UBC, UCA).
ตัวอย่างการเดินสายไฟ
Inlet terminal: Terminals 1, 5, และ 9 are connected to the threephase power supply (L1, L2, L3).
Outlet terminal: Terminals 2 และ 4 are connected to the voltmeter, and terminals 6 และ 10, as well as terminals 8 และ 12, are shortcircuited internally through the connection piece.
- การควบคุมมอเตอร์
Supports functions such as forward and reverse rotation and twospeed switching of motors below 5.5kW (the corresponding model needs to be selected, such as LW5D16 5.5N/3).
Wiring key points
Main circuit: Connect the motor power cable to the output terminals of the switch (such as 2/T1, 4/T2, 6/T3).
Control circuit: Achieve motor rotation direction or speed switching through the onoff of contacts.
- Special Requirements
Explosionproof and anticorrosion: A customized model (such as LW5D16YH3/3Ex) is required to meet the use in dangerous environments.
Seismic reinforcement: Complies with the GB 50260 seismic code and is suitable for highvibration occasions.
III. การติดตั้งและบำรุงรักษา
- วิธีการติดตั้ง
Railmounted: Quickly installed through a 35mm standard rail, saving cabinet space.
Bolt fixation: Use M4 bolts to fix it on the panel to ensure mechanical stability.
- Wiring Specifications
Contact layout: Terminals 112 are divided into three groups (14, 58, 912), and each group corresponds to a voltage gear.
Insulation requirements: หลังจากเดินสายไฟ, check the insulation resistance (≥10MΩ) to avoid short circuits.
- Maintenance Suggestions
Replacement of vulnerable parts: The height of components such as contactor coils and indicator lights is ≤1.8m for easy operation.
Regular inspection: Clean the contacts quarterly to ensure good contact; calibrate the action value of the protection device annually.
- Model Selection and Procurement
- Model Comparison
| Model | Number of Contact Sections | Operation Positions | การใช้งานทั่วไป |
| LW5D16YH2/2 | 2 sections | Three positions | Twophase voltage measurement |
| LW5D16YH3/3 | 3 sections | Four positions | Threephase voltage measurement |
| LW5D16 5.5N/3 | 3 sections | Three positions | Forward and reverse rotation control of motors |
- Procurement Channels
Ecommerce platforms: Suning.com, เจดีดอทคอม, Alibaba, ฯลฯ, โดยมีราคาต่อหน่วยประมาณ 2333 หยวน (including freight).
Authorized distributors: A business license needs to be provided, and bulk purchases are supported (such as Beijing Chuangxinjie Electromechanical Equipment Co., บจ.).
- ประเด็นสำคัญในการยอมรับ
Function test: Manual/automatic opening and closing, and the dualpower supply switching time ≤100ms.
Document verification: It should include circuit diagrams, component lists, a copy of the 3C certification, and the factory test report.
- Frequently Asked Questions
- How to distinguish between voltage/current transfer switches?
Voltage type (YH): Fewer contact groups (เช่น 3 sections), used to switch the voltmeter.
Current type (LH): More contact groups (เช่น 6 sections), used to switch the ammeter.
- Can it replace Schneider’s similar products?
It is necessary to confirm the installation dimensions (such as a panel opening of 55×55mm) and contact logic. It is recommended to consult the manufacturer’s technical support.
- How to customize the explosionproof type?
It is necessary to communicate with the manufacturer in advance and provide the explosionproof grade (such as Ex d IIB T4 Gb) and installation environment parameters.
