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  Regarding busbars, our understanding and knowledge are gained through continuous learning, allowing us to improve ourselves and gradually accumulate experience, so as to achieve the expected learning goals and requirements as soon as possible. So below, as usual, it is still about the installation acceptance standards for busbars, which we should be clear about, so that everyone can gain new insights and thereby shorten the gap to the goal.

I. Brackets

1. Anti-corrosion treatment should be applied.

2. Continuous welding should be used.

3. Installation should be firm, and the positions of mounting holes should be consistent.

II. Bracket spacing

For single-line "H" type below 300A, it should be ≤1.5M; above 400A, it should be ≤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, the bracket spacing should be <1.0M according to site conditions.

III. Suspension parts

The position should be correct, installation should be firm, and the quantity should meet the requirements.

IV. Busbar main body

1. The gap between the protective shell and the conductor should be ≤2mm.

2. Straightness: The allowable deviation in height from the track center is <±15mm.

3. Straightness: The allowable deviation in the longitudinal direction from the track center is <±15mm.

4. Twist: <15mm/10m.

V. Expansion joints

1. The quantity should comply with regulations.

2. The gap distance should meet the theoretical expansion amount caused by the temperature difference at the installation site.

VI. Current collectors

1. The square steel frame should be welded firmly, and the allowable deviation of the centerline perpendicular to the busbar is ±3mm.

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

3. The current collector should slide smoothly on the busbar plane, meeting the specified pressure. (See next page: Contact pressure gauge between the current collector brush and the guide rail)

VII. Fasteners

The torque of the fastening 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 firm and must not bear tension.