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Bridgold In Rail Transit Equipment

Factory Qualification & Expertise

With over 40 years in braided and stranded copper wires, we master the entire chain from material selection, braiding processes to terminal termination. Our new Phase II facility (15,000 m²) was commissioned in October 2023, integrating digital management and intelligent production to ensure high precision and consistency for rail transit equipment. Grounded in deep understanding of vibration, thermal rise, and space constraints, we offer customized connection solutions from the early design stage.

    Laminated Busbar – Core Interconnect for Traction & Auxiliary Converters

    Typical Applications: Traction converters, auxiliary power cabinets, train control cabinets, braking resistor cabinets.

    Advantages: Low parasitic inductance suppresses switching overvoltage, protects IGBTs; flat structure saves cabinet depth, increases power density; custom L/Z shapes fit confined spaces.

    Expertise Support: 40 years of copper performance knowledge ensures insulation withstand and current margins, complying with EN 50155 and other railway standard

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    Braided Busbar – Anti-vibration Cross-connection & Displacement Compensation

    Typical Applications: High‑current connections between bogies and car body, inter‑car busbar crossings, pantograph/current collector flexible leads, gearbox grounding.

    Advantages: Extreme flexibility absorbs multi‑directional vibration and coupler displacement, preventing rigid fractures; compensates for assembly tolerances, simplifies on‑site installation.

    Expertise Support: 40‑year braiding process database, validated by tens of thousands of fatigue tests, ensures stable contact resistance under -40°C~+125°C and severe vibration.

    Braided/Standard Wire – Grounding & Auxiliary Circuits

    Typical Applications: Car body grounding, bogie grounding, equipotential bonding of equipment enclosures, signal shielding grounding, maintenance jumper leads.

    Advantages: Flexible and lightweight, easy to route, ensures reliable grounding and fault current diversion; available in bare copper, tin‑plated, or silver‑plated for various corrosion protection needs.

    Expertise Support: 40 years of stranded/braided process accumulation, with strong batch consistency, guarantees long‑term safe operation of rolling stock.

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