Common box bus duct is a device used for power transmission, and its usage details involve multiple aspects. Here is a specific introduction:

1、 Preparation and selection matching before installation

-Specification compatibility check: Select the corresponding model (such as GFM series) based on the power supply system parameters (AC 50~60Hz, voltage 3.6~35kV, rated current 400~6300A), and confirm that the environmental conditions (altitude ≤ 2000 meters, temperature -25 ℃~40 ℃) meet the protection level (IP40/IP54) requirements.

-Component integrity verification: Check whether the shell, conductive strip, insulation material and accessories are intact, measure the insulation resistance (≥ 100M Ω) to ensure that there is no moisture or damage.

2、 Core installation process and structural specifications

-Bracket fixation and spatial planning: Install fixed brackets along walls or columns, with a horizontal laying distance of ≥ 2.2m from the ground and a vertical section spacing of ≤ 2.5m; install shock-absorbing devices and waterproof platforms at floor slabs to avoid mechanical stress concentration.

-Segmented splicing and sealing treatment

-Conductor connection: Welding or bolt fastening is used to ensure that the contact area is not less than the cross-sectional area of the main line protective conductor, and the priority of PE line connection is higher than that of phase line.

-Shell sealing: The side plate and cover plate are assembled without screws through a hook groove, and the joint surface needs to be flat without gaps; Cross connect the grounding wire at the joint of the shell, and ensure reliable grounding at both ends.

-Thermal expansion and contraction compensation design: When the straight section exceeds 40m or passes through building deformation joints, install corrugated pipe expansion joints to achieve horizontal/vertical bidirectional displacement adjustment and compensate for temperature difference settlement errors.

3、 Strengthening measures for electrical safety and protection

-Shock absorption and noise reduction implementation: Soft connections or copper braided tapes are used between transformers, generators, and bus ducts, and rubber pads are installed between the shells; Add shock absorbers, elastic support porcelain bottles, and conductive bars within the system.

4、 Operation and maintenance management and fault handling

-Routine inspection content

-Monitor joint temperature rise (≤ 70K), shell leakage, and foreign object intrusion;

-Check the elasticity of the spring bracket, aging of the insulation layer, and contact status of the plug-in box.

-Periodic maintenance

-Tighten the connecting bolts every year, clean the accumulated dust to ensure heat dissipation;

-Use a voltage tester to check for insulation breakdown, and replace or wrap the faulty section locally.

-Emergency response mechanism: In case of water spray, condensation or corona discharge, immediately cut off the power supply and activate the backup line; Ensure the fire resistance performance of fire protection distribution lines in fire scenarios (950 ℃ flame test).

The efficient application of shared busbar trunking relies on refined control throughout the entire process - from early 3D wiring planning, to mid-term seismic sealing construction, and then to later intelligent monitoring and maintenance.