Zhejiang Yipu Metal Manufacturing Co., Ltd.
Zhejiang Yipu Metal Manufacturing Co., Ltd.
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FAQ

Copper Braided Wire · Soft Connection

Professional Solutions · Zhejiang Yipu Metal

⚡ High conductivity · Resistant to vibration · Customizable

Copper braided wire is constructed by interweaving multiple strands of fine copper wire (often bare or tinned) into a flat or tubular braid. Unlike rigid standard cables, the braided structure provides exceptional flexibility, high vibration resistance, and efficient heat dissipation. It is primarily used for flexible electrical connections, earthing straps, and EMI shielding rather than long-distance power transmission. Zhejiang Yipu Metal is very professional on such two types of wire.

A flexible copper connector (often called a laminated copper flexible connector or copper braid connector) is a conductive component made by cold-pressing or diffusion-welding copper braided wire or stacked copper foils onto solid terminals. It is designed to connect two electrical components while absorbing vibration, compensating for installation tolerances, and accommodating thermal expansion. Zhejiang Yipu Metal is very professional on such products with completed certifications.

We primarily use high-conductivity T1 electrolytic copper (Cu-ETP) with a copper content of ≥99.9%. For enhanced corrosion resistance, we also offer tinned, nickel-plated, or silver-plated copper wires. The standard wire diameter for braiding is typically 0.04 mm to 0.15 mm.

The critical parameters include:

  • Cross-sectional area (mm²): Determines the current-carrying capacity.
  • Current rating (A): Based on temperature rise limits.
  • DC resistance (Ω/m): Lower is better for efficiency.
  • Operating temperature: Standard ranges from -40°C to +150°C (or up to 300°C for specialized high-temp versions).
  • Terminal dimensions: Hole diameter, hole spacing, and pad size.

Our copper braids and flexible connectors are widely used in:

  • Power distribution: Transformers, switchgear, and busbar connections.
  • Transportation: Electric vehicles (EV battery packs), rail transit, and automotive grounding.
  • Industrial equipment: Vacuum circuit breakers, electrolytic smelting, and welding machines.
  • Renewable energy: Wind turbines and solar inverters.

Zhejiang Yipu Metal employ molecular diffusion welding or high-pressure cold pressing for the terminal connections. This ensures a low contact resistance (often in the micro-ohm range) and high pull-out strength. We conduct routine tests including resistance testing, tension testing, and thermal cycling to ensure the joint remains stable under high current loads.

Yes. Zhejiang Yipu Metal provide full customization services. You can specify the overall length, width, thickness, terminal hole patterns, and the type of plating (tin, silver, or nickel). Simply provide a 2D drawing or a physical sample, and we can manufacture to your exact specifications.

Our production and testing generally comply with:

  • JB/T 6313.1-2011: General requirements for electrical copper braided wires.
  • GB/T 12970.2: Soft copper stranded wires for electrical purposes.
  • T/ZZB 3784-2024: Conductive laminated copper flexible connectors for electric vehicles (for EV-specific orders).

Zhejiang Yipu Metal can also provide products that meet equivalent international standards upon request.

Yes, we can supply material certificates, RoHS and SGS reports as required.

Braided wire connectors are made from woven round wires, offering multidirectional flexibility and excellent vibration dampening, making them ideal for irregular routing. Laminated foil connectors are made from stacked thin copper sheets, which typically provide a higher cross-sectional area in a more compact, flat profile and are often used for high-current busbar connections in tight spaces.

Braided: interwoven strands, softer, better for vibration offset. Stranded: twisted strands, higher tensile strength.

The cross-section depends on the required current and the allowable temperature rise. As a general rule, copper braids are rated at approximately 3-5 A per mm² for continuous duty, but this varies based on installation conditions (ventilation, ambient temperature). Please provide your rated current and duty cycle, and our engineers can recommend the optimal size.

Yes. Zhejiang Yipu Metal can provide heat shrink tube, silicone sleeve and fiberglass sleeve are optional for insulation protection.

Small trial orders are accepted; MOQ varies by specification.

10-20 years under normal use. Tinned copper lasts longer; lifespan depends on load, vibration and environment.

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