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    Regarding busbars, our understanding and knowledge are gained through continuous learning, which allows us to improve ourselves and gradually accumulate experience, so as to achieve the expected learning goals and requirements as soon as possible. Therefore, the following is no exception, still about the acceptance standards for busbar installation, which we should be clear about, so that everyone can gain new insights and thus shorten the gap towards the goals.

    I. Brackets

    1. Should be treated with anti-corrosion.

    2. Should be continuously welded.

    3. Installed securely, with consistent positions of mounting holes.

    II. Bracket spacing

    For single-line "H" type below 300A, spacing ≤1.5M; above 400A, spacing ≤3M.

    For multi-line seamless busbar type: 1.0-1.5M; conduit type: 1.0-1.5M; cable trolley type: 1.0-2.0M; for arc segments, bracket spacing should be <1.0M according to site conditions.

    III. Suspension parts

    Position correct, installed securely, quantity meets requirements.

    IV. Busbar main body

    1. Gap between protective shell and conductor ≤2mm.

    2. Straightness: allowable deviation from track center height < ±15mm.

    3. Straightness: allowable longitudinal deviation from track center < ±15mm.

    4. Twist: <15mm/10m.

    V. Expansion joints

    1. Quantity complies with regulations.

    2. Gap distance should accommodate the theoretical expansion caused by temperature differences at the installation site.

    VI. Current collectors

    1. The square steel bracket is securely welded, and the centerline is perpendicular to the busbar with allowable deviation ±3mm.

    2. The dimensions between the square steel bracket and the busbar should ensure that the movable arm of the current collector is parallel to the busbar main body, with allowable deviation ±3mm.

    3. The current collector slides smoothly on the busbar surface, meeting the specified pressure. (See next page: Contact pressure table between collector brush and rail)

    VII. Fasteners

    The torque of tightening nuts should comply with the manufacturer's recommended values. Recommended values: M10-28NM, M8-12NM, M6-6.5NM

    VIII. Power inlet

    The inlet end should be secure and must not bear tension.







Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.