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Intensive busway for dry and non-corrosive gases

  • Categories:Zhongrui News
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  • Time of issue:2019-05-28 14:04
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(Summary description)Busway construction 1. Closed busbar installation Suitable for dry and non-corrosive gases. When the enclosed busbar is laid horizontally, the height from the ground should not be less than 2.2m. When the vertical laying is less than 1.8m from the ground, measures to prevent mechanical damage shall be taken, except for laying in electrical special rooms (such as power distribution room, motor room, electric shaft, technical layer, etc.).

Intensive busway for dry and non-corrosive gases

(Summary description)Busway construction

1. Closed busbar installation

Suitable for dry and non-corrosive gases. When the enclosed busbar is laid horizontally, the height from the ground should not be less than 2.2m. When the vertical laying is less than 1.8m from the ground, measures to prevent mechanical damage shall be taken, except for laying in electrical special rooms (such as power distribution room, motor room, electric shaft, technical layer, etc.).

  • Categories:Zhongrui News
  • Author:
  • Origin:
  • Time of issue:2019-05-28 14:04
  • Views:
Information
Busway construction
 
1. Closed busbar installation
 
Suitable for dry and non-corrosive gases. When the enclosed busbar is laid horizontally, the height from the ground should not be less than 2.2m. When the vertical laying is less than 1.8m from the ground, measures to prevent mechanical damage shall be taken, except for laying in electrical special rooms (such as power distribution room, motor room, electric shaft, technical layer, etc.).
 
The distance between the supporting points of the closed busbar horizontal laying shall not exceed 2.5m; when laying vertically, it shall be supported by special attachments through the floor. The closed busbar that is laid vertically shall be fixed by brackets when the inlet box and the end are suspended.
 
When the length of the closed busbar is more than 40m, the expansion joint shall be provided. When the busbar crosses the expansion joint or settlement joint of the building, measures suitable for the movement of the building structure should be adopted. The plug-in branch points of the enclosed busbars should be located in a safe and reliable place with convenient installation and maintenance. The connection of the enclosed busbars should not be made through the floor or wall. Fire isolation measures should be taken when passing through firewalls and fire slabs. The lap joint between the busbar and the busbar, the busbar and the terminal of the electrical appliance shall be cleaned and coated with electric compound grease.
 
2. Naked busbar installation
 
When the bare busbar is laid horizontally across the column, beam or truss, the spacing between the brackets shall not exceed 6m, and the maximum cross-sectional area of ​​the bare busbar shall not exceed 100mm×10mm. When the bare busbar is laid along the wall, along the beam or horizontally along the roof truss, the distance between the brackets shall not exceed 3m. When the terminal tensioning device is not laid, the bare busbar shall be clamped on the insulator. When the bare busbar is laid along the wall along the beam or horizontally along the truss, the distance between the brackets shall not exceed 2m, and the busbar shall be clamped on the insulator.
 
When the bare busbar is laid across the beam or across the truss, the terminal and the intermediate tensioning device are respectively used at the terminal and the intermediate section. Whether the two clamping brackets need to be equipped with a fixed clamping plate to improve the dynamic stability during the short circuit is The designer decided.
 
The tensile force of each phase busbar, when the distance between the support points is 6m, the temperature is between 25°C and 30°C, the sag is about 100~120mm, and the tensile force is 0.1×9.8N/mm2; the maximum tensile force can be increased to 0.2× in winter. 9.8 N/mm2, so the sag is reduced to 60 mm. The lap joint between the busbar and the busbar, the busbar and the electrical appliance terminals shall be cleaned and coated with electric compound grease. The installation and fixing of the components on the wall should be closely coordinated with the civil construction, and pre-installed or pre-embedded parts should be avoided in advance to avoid the excavation.
 
Installing a dense busway busway is quick and easy. Compared with other power distribution methods, reducing the installation time of the busway can directly save installation costs.

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