Driven by the dual imperatives of the "dual carbon" goals and the digital transformation of manufacturing, energy efficiency upgrading in the industrial sector has become a critical pathway for high-quality development. Recently, Ganzhou Sun&Lynn Circuits Co., Ltd. (hereinafter referred to as "Sun&Lynn Circuits") successfully completed an energy efficiency retrofit of its factory mixer equipment, procuring a batch of IE4/GB2 efficiency TED4 series dust-explosion-proof motors (explosion protection rating: Ex tb IIIC T135 °C) from WEIMA ELECTRIC (Shanghai) Co., Ltd. to replace aging motors. This upgrade not only enhances the stability and safety of production lines but also achieves significant energy-saving and emission-reduction results, setting a new practical benchmark for green manufacturing in the PCB industry.

Company Profile

Ganzhou Sun&Lynn Circuits Co., Ltd., established in June 2010 and located in the Zhanggong District High-Tech Industrial Park, Ganzhou City, Jiangxi Province, is a national high-tech enterprise specializing in the R&D, production, and sales of mid-to-high-end printed circuit boards, including High-Density Interconnect (HDI), Flexible Printed Circuits (FPC), and Rigid-Flex boards. The company is a subsidiary of Sun&Lynn Circuits Group—the latter was founded in Shenzhen in 2002 and officially renamed Sun&Lynn Circuits in 2006, representing a technological innovation leader among domestic circuit board manufacturers.

Project Introduction

In Sun&Lynn Circuits's Ganzhou factory PCB production process, mixers are key equipment in critical operations such as chemical batching and solution mixing, responsible for uniformly blending various chemical liquids, resin slurries, and other raw materials. For a long time, the factory's mixers were equipped with older motors of standard energy efficiency. Under prolonged continuous operation, these motors exhibited issues including high energy consumption, large starting current surges, and suboptimal operational stability.

 With the continuous upgrading of national energy efficiency standards for industrial motors, and Sun&Lynn Circuits's own commitment to green manufacturing and carbon reduction, the factory decided to carry out a comprehensive energy efficiency upgrade of the mixer drive systems. After rigorous technical evaluation and equipment selection, Sun&Lynn Circuits ultimately chose the TED4 series dust-explosion-proof motors as the replacement solution.

Solutions and Customer Value

The TED4 series dust-explosion-proof motors delivered in this project are manufactured by TECO, a globally renowned electric motor brand. As an officially authorized distributor of TECO motors, WEIMA ELECTRIC (Shanghai) Co., Ltd. leveraged nearly twenty years of experience in TECO product sales and professional technical service capabilities to provide Sun&Lynn Circuits with full-process support—from product selection and technical consultation to delivery and after-sales service.

Tailored to the specific requirements of Sun&Lynn Circuits's mixer operating conditions, this solution delivers tangible value across multiple dimensions, including safety protection, energy efficiency improvement, and operational adaptability.

• Safety Value: High-Level Explosion Protection and Sealing Design Reinforce Production Safety

  The TED4 motor achieves an explosion protection rating of Ex tb IIIC T135 °C, effectively accommodating combustible dust environments prevalent in PCB production workshops. It holds GB, IECEx, and ATEX multiple explosion-proof certifications, fundamentally eliminating dust explosion hazards. With an IP65 protection rating, it offers excellent dust-tight and water-resistant performance, ensuring stable and reliable operation even in complex conditions involving chemical splashes and dust-laden atmospheres. This solution provides frontline operators with enhanced workplace safety, supporting Sun&Lynn Circuits's continued track record of "safe production and steady development."

  
  

• Energy-Saving Value: IE4 High-Efficiency Rating Significantly Reduces Electricity Costs

  The TED4 series motors feature an IE4 premium efficiency rating, delivering substantial electricity savings at the same output power compared to the factory's older motors. The motors employ optimized electromagnetic designs that smooth current variations under load fluctuations, effectively improving energy utilization. For continuously operating equipment like mixers, the energy efficiency gains translate into notably lower electricity costs. Based on operational data from comparable energy-efficiency retrofit projects, the electricity cost savings alone can recover the equipment investment within a relatively short period. Combined with Sun&Lynn Circuits's existing intelligent energy monitoring system, the energy-saving effects can be tracked in real time, further amplifying management benefits.

  
  

• Stability Value: Superior Mixing-Duty Adaptability Enhances Overall Equipment Effectiveness

  The TED4 motor excels in mixing, conveying, and feeding applications, with its stable torque output characteristics ideally matching the varying power demands of mixers during starting, running, and load fluctuations—ensuring uniformity and consistency in the mixing process. Actual operations show that the new motors start more smoothly, with lower current peaks and significantly reduced vibration in transmission components. The overall operational stability of the mixer lines has been comprehensively improved, reducing unplanned downtime and production losses, while effectively enhancing Overall Equipment Effectiveness (OEE).