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(Please note that this ISA standard is an IEC adoption with modifications. Therefore, the "Free Preview for Members" option is not available, and the Standards Redemption Coupon may not be applied to its purchase.)This standard is applicable to electrical apparatus protected by enclosures and surface temperature limitation for use in explosive dust atmospheres classified as Zone 21 or Zone 22 hazardous locations in accordance with Article 506 of the NECŪ. It specifies requirements for design, construction and testing of electrical apparatus.
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