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ISA 61241-18 : 2006

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

ELECTRICAL APPARATUS FOR USE IN ZONE 20, ZONE 21 AND ZONE 22 HAZARDOUS (CLASSIFIED) LOCATIONS - PROTECTION BY ENCAPSULATION "MD"

Withdrawn date

01-01-2016

Published date

01-01-2006

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1 Scope
2 References
3 Terms and definitions
4 General
   4.1 Temperature classification
   4.2 Level of protection
   4.3 Level of protection "maD"
   4.4 Level of protection "mbD"
   4.5 Supply specifications
5 Requirements for compounds
   5.1 General
   5.2 Specification
6 Temperatures
   6.1 General
   6.2 Temperature limitation
   6.3 Determination of the limiting temperature values
7 Constructional requirements
   7.1 General
   7.2 Determination of possible faults
   7.3 Switching contacts
   7.4 External connections
   7.5 Protection of bare live parts
   7.6 Cells and batteries
   7.7 Protective devices
8 Type tests
   8.1 Tests on the compound - water absorption test
   8.2 Tests on the apparatus
9 Routine verifications and tests
   9.1 Visual inspections
   9.2 Dielectric strength test
10 Marking
Annex A (informative) Basic requirements for compounds for
                      encapsulation "mD" apparatus
Annex B (normative) Allocation of test samples
Annex C (normative) Test procedure during thermal cycling test
Annex D (Informative) United States major deviations

Applies to electrical apparatus protected by encapsulation type of protection "mD" and surface temperature limitation for use in areas where combustible dust may be present in quantities which could lead to a fire or explosion hazard. Also specifies requirements for design, construction and testing of electrical apparatus, parts of electrical apparatus and Ex components where the rated voltage does not exceed 10 kV.

Committee
SP12.10
DevelopmentNote
To be read in conjunction with ISA 61241-0. (10/2006)
DocumentType
Standard
PublisherName
International Society of Automation
Status
Withdrawn

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