Cable sealing
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In an environment with corrosive gases, how can we effectively prevent these gases from entering the junction box or the interior through the cable openings? For example, foam sealant can only provide fire protection, and its sealing effect is poor ； The cement does not have good sealing properties......
Use explosion-proof electrical equipment and explosion-proof junction boxes
The cables run in cable trays, and there are a large number of electrical and instrumentation cables
When cables are run in cable trays, only fireproof boards and fireproof putty can be used; they do not provide explosion protection
These all make it difficult to prevent corrosive gases from entering
Perhaps connect a pipe carrying nitrogen or compressed air to the cabinet and blow gently to maintain a slight positive pressure inside the cabinet
This is how I handle it in my control box
Was it really done that way? Compressed air strike? There are new risks with nitrogen
The cable goes into the rack room, not the control cabinet