Wednesday, January 9, 2013
Difference Between ia & ib Intrinsic Safety Protection
Difference Between ia & ib Intrinsic Safety Protection
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ProtectionType
ia
Apparatus is designed so that it is
suitable for Zone 0 & it will not cause ignition when the maximum permitted
values are applied to its terminals:
a)
in
normal operation with application of those non-countable faults which give the
most
onerous
condition;
b)
in
normal operation with application of one countable fault and those
non-countable faults
which
give the most onerous condition; and
c)
in
normal operation with application of two countable faults and those
non-countable faults which give the most onerous condition.
Labels: difference between ia and ib protection, hazardous area, ia, ia category, ib, intrinsic safe circuit, Intrnsic safety, level of protection ia apparatus, level of protection ib apparatus
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