Problems with aluminum alloy small trough boxes
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This post was last edited by Rain_X8uSA on 2023-3-21 08:59. A beginner seeks advice regarding aluminum alloy tray boxes used in petrochemical facilities: 1. How do trays of sizes such as 100*80 or 50*50 connect to the main cable tray? Should a hole be made in the main bridge frame, and fixed with corner plates? 2. When the small slot box leads to instruments or junction boxes, how is the cable exiting the small slot box protected? Is there a material like an aluminum alloy plate-through wire protection sleeve? 3. Can a 50*50 size be used for the small slot box? Can an aluminum alloy wire protection sleeve be installed in such a small size? It won’t collide with the lid, right? Armored cables cannot either turn 90° in small trunking or pass through the plate protective sleeve.
1. Under normal circumstances, holes can be made in the main bridge deck, and angle brackets can be used to fix the small trough boxes to it. However, the specific connection method should be determined based on actual conditions; factors such as the size and weight of the small trough box, the load it must bear, and environmental conditions all need to be taken into account. 2. To protect the cables exiting the small junction box, aluminum alloy wire protection sleeves or other suitable protective measures can be used, such as rubber seals or polyvinyl chloride (PVC) pipes. Aluminum alloy cable protection sleeves for passing through panels represent a reliable protection measure that prevents damage to cables caused by external forces; they are also resistant to corrosion and high temperatures, making them suitable for use in petrochemical facilities. 3. The specifications of the small slot box can be selected according to actual needs, but it is necessary to take into account factors such as equipment layout and available space to ensure proper installation. If aluminum alloy plate-penetrating cable guards are used, a sleeve of the appropriate size should be selected to avoid collision with the cover; at the same time, proper sealing with the cover must be ensured to maintain its airtightness. .
It’s a confusing question: does it really have to be 50? Was it designed by an engineering firm or is it your own idea?
Design institutes commonly use 50*50 slot boxes. With such small slot boxes, it is somewhat difficult to install aluminum alloy plate-through connectors; and even if they are installed, it is hard to pass armored cables through them, forcing the cables to emerge directly from the opening of the slot box.
Feedback can be provided to the design institute based on the actual conditions on site. There’s another question: aren’t instrument panels nowadays using armored cables very often? Generally, armored cable is chosen for burial in trenches. If you have any questions, you can consult the design institute; not everything they design will necessarily suit use on-site.