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1 Scope 1.1 This part of GB 3836 contains the specific requirements for construction and assessment of intrinsically safe electrical systems, type of protection “i”, intended for use, as a whole or in part, in explosive atmospheres in Group II locations. This standard is intended for use by the designer of the system who may be a manufacturer, a specialist consultant or a member of the end-user’s staff.
NOTE 1 The detailed requirements for construction and assessment of intrinsically safe electrical systems in Group I and Group III locations are intended to be given out in the next revision of this part.
1.2 This part supplements GB 3836.4-2010, the requirements of which apply to electrical apparatus used in intrinsically safe electrical systems.
As for the apparatus in Group II system intended for used in the explosive atmospheres, the groups of whose surface temperature shall be given out in accordance with GB 3836.1 and GB 3836.4.
NOTE 2 The detailed requirements for “ic” intrinsically safe systems are intended to be given out in the next revision of this part.
1.3 The installation requirements of a Group II system designed in accordance with this part are specified in GB 3836.15-2000.
2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
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