Title: Instructions manual - THGT fan.pdf
This is especially important for ATEX and Flameproof applications.4.4 Ensure any fan / motor temperature protection devices are fitted and operating correctly, especially for all ATEX Ex e motoredproducts, and all ATEX Ex d motored products speed controlled by VSD Frequency Inverter. Warning: To prevent ATEX Ex e motored products temperature rise exceeding the maximum limit, protection devices must trip: A) If maximum temperature achieved. B) Within specified time (tE) if short circuit or short circuit current to rated current ratio achieved (IA / IN) This data is found on Exe motor labels.Refer: IEC EN 60079 -7, IEC EN 60079 – 14.