1.

Explain Ex I Intrinsic Safety?

Answer»

A protection concept in which the ELECTRICAL energy within the equipment is restricted to a LEVEL which is below that what may cause an ignition or to limit the heating of the surface of the equipment. There are TWO main SUB types to Ex i protection, these being “ia” and “ib”.

  • Type “ia” protection ALLOWS for the occurrence of two faults during operation.
  • Type “ib” protection allows for the occurrence of one fault during operation.

A protection concept in which the electrical energy within the equipment is restricted to a level which is below that what may cause an ignition or to limit the heating of the surface of the equipment. There are two main sub types to Ex i protection, these being “ia” and “ib”.



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