Explosive atmospheres - Part 25: Intrinsically safe electrical systems
- extension of the scope from Group II to Groups I, II and III;
- introduction of level of protection "ic";
- addition of requirements for cables and multi-core cables;
- reference to IEC 60079-11 regarding the termination of intrinsically safe circuits;
- requirements for the assessment of an expanded and clarified intrinsically safe system regarding level of protection "ic", simple apparatus and faults in multi-core cables;
- introduction of predefined systems and merging of the system requirements for FISCO from IEC 60079-27;
- addition of requirements for simple intrinsically safe systems containing both lumped inductance and lumped capacitance;
- addition of a method for testing the electrical parameters of cables;
- additional information for the use of simple apparatus in systems.
|Publication type||International Standard|
|Available language(s)||English/French, Spanish|
|TC/SC||TC 31/SC 31G - Intrinsically-safe apparatusrss|
|ICS||29.260.20 - Electrical apparatus for explosive atmospheres|
|File size||4505 KB|
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