Selection of glands for increased-safety junction boxes
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For flameproof junction boxes, we generally use flameproof glands; for intrinsically safe junction boxes, we use ordinary glands with certain protective capabilities. But what about increased safety junction boxes? In practical design, we often focus on using flameproof glands, but upon reflection, is that really appropriate? In theory, glands with increased safety certification should be used; the principles of explosion isolation and increased safety for explosion protection are different, and the performance requirements for such glands also vary. What design do you people actually use in practice?
Our company produces intrinsically safe and flameproof double-certified Gran products
Adding explosion protection enhances safety; I don’t think there’s any issue with that. Using a higher-grade version for a lower-grade application – you’d better consult the manufacturer for details.
The enhanced safety junction box, equipped with flameproof connectors, is fine.