HV Harness Solutions: Custom 300V–1000V Wiring for EV & Energy

WEITAI's HV harnesses are the culmination of 20 years of innovation and manufacturing excellence. Our core competence lies in customizing wire harnesses for high-voltage applications across electric vehicles (EVs), renewable energy systems, medical equipment, and industrial automation. Our production process begins with rigorous material selection: we source high-grade copper conductors with tin or silver plating to ensure low resistance and high conductivity. Insulation materials, such as cross-linked polyethylene (XLPE) and silicone rubber, are chosen for their thermal stability and dielectric strength. All raw materials undergo 100% inspection to meet RoHS and REACH standards. The manufacturing process involves precision wire stripping, crimping, and soldering, supervised by skilled technicians with over a decade of experience. We utilize semi-automatic and fully automated machines from Germany and Japan, achieving a crimp pull force that exceeds industry standards by 20%. Each harness is tested under high-voltage (up to 3000V) and insulation resistance tests. Our in-house laboratory conducts thermal cycling, vibration, and moisture resistance tests to simulate real-world conditions. In the EV sector, we have supplied harnesses for battery packs, charging stations, and motor controllers. One notable project involved a 800V busbar harness for a luxury EV, where our design prevented arcing and electromagnetic interference (EMI). In solar applications, our harnesses are designed to withstand UV radiation and extreme temperatures from -40°C to 125°C. We also offer sealing solutions, such as waterproof connectors with IP67 ratings, for harsh environments. The medical industry requires stringent cleanliness and biocompatibility; our harnesses are manufactured in a cleanroom and use medical-grade materials, providing reliable performance in diagnostic and therapeutic devices. With a global footprint, WEITAI exports to over 40 countries, including Germany, Japan, and the United States. Our commitment to quality is reflected in our 98% product qualified rate and our ability to deliver custom prototypes within 7-10 days. We also offer value engineering, helping clients reduce costs through design optimization. For instance, by recommending a specific connector series, we helped a client save 25% on assembly costs. Our dual production bases in Dongguan ensure scalability, with a monthly output of 1 million harnesses. We hold 40+ patents, including innovations in high-voltage connector designs and cable shielding. Our R&D team collaborates closely with clients to anticipate future trends, such as the transition to higher voltage platforms (800V+) for EVs. We are ready to support your next high-voltage project with customized solutions tailored to your specifications. Contact us today for a free consultation and obtain a quotation within 24 hours. Let WEITAI be your trusted partner in powering the world with safe, efficient, and reliable HV harnesses.