Ex Isolators — Selection Inspection and Applications
This article covers Ex Isolators — Selection Inspection and Applications. Ex isolators provide means of isolation for electrical circuits in hazardous areas. This guide covers Ex d and Ex e isolator selection, inspection, and the requirements for emergency stop functions.
Overview
Understanding this equipment type is important for both CompEx Ex01/Ex02 (installation and selection) and Ex03/Ex04 (inspection). EX Academy's simulations include this equipment type across multiple scenarios.
EX Academy's inspection simulations and equipment selection scenarios include this equipment type. Each scenario presents a real work order with the equipment type, zone classification, gas group, and inspection findings or selection requirements.
Key Selection and Inspection Points
For selection: verify zone, gas group, T-class, and EPL against the area classification. For inspection: check the certificate matches the area, verify all entries are sealed, check for physical damage, and classify any deficiencies using the IEC 60079-17 Category X/A/B/C system.
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