Can petrochemical instrument cable trays be laid with wave climbing?
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Can petrochemical instrument cable trays be laid with wave climbing? Are there any design specifications that specify the creeping angle, etc.?
Could you first explain what \"crawling wave laying\" means? What wave on the wave? Big waves, small waves, or waves that fill the chest with excitement?
Wave? Slope? Vertical is fine; what other angle issues are there?
I was wrong; the cable tray is not laid from low to high through upper and lower bends, but rather reaches from low to high directly with a certain slope.
Sure, we’ve done this before. When cable trays enter the control room from the wall, they should enter at an upward slope (to prevent rainwater from entering along the trays).
The cable tray can have a slope. For cables laid at an inclination greater than 45°, they should be secured every 2 meters. In accordance with the instrumentation construction standards for the petrochemical industry, SH/T 203521 (? (I can’t remember; please check on your own.) Requirement: The design of the electrical circuits in the instruments shall comply with the relevant provisions of GB 50168 and GB 50303. The figure below shows the GB 50303-2015 Code for Acceptance of Construction Quality of Building Electrical Engineering
It can radiate uphill, mainly depending on the thickness of the cable used and the bending requirements.