ДСТУ EN IEC 60079-25:2024 Вибухонебезпечні середовища. Частина 25. Іскробезпечні електричні системи (EN IEC 60079-25:2022, IDT; IEC 60079-25:2020, IDT)
ДСТУ EN IEC 60079-25:2024
(EN IEC 60079-25:2022, IDT; IEC 60079-25:2020, IDT)
Вибухонебезпечні середовища.
Частина 25. Іскробезпечні електричні системи
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)
CONTENTS
FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Descriptive system document
5 Grouping and temperature classification
6 Levels of Protection
6.1 General
6.2 Level of Protection “ia”
6.3 Level of Protection “ib”
6.4 Level of Protection “ic”
7 Non-intrinsically safe circuits
8 Interconnecting wiring / cables used in an intrinsically safe system
8.1 General
8.2 Cables containing a single intrinsically safe circuit
8.3 Cables containing more than one intrinsically safe circuit
9 Requirements of single and multi-circuit cables
9.1 General
9.2 Dielectric strength
9.3 Intrinsic safety parameters of cables
9.4 Conducting screens
9.5 Types of multi-circuit cables
10 Enclosures
11 Earthing and bonding of intrinsically safe systems
12 Assessment of an intrinsically safe system
12.1 General
12.2 Systems containing only apparatus certified to IEC 60079-11
12.3 Systems containing apparatus not separately evaluated to IEC 60079-11
12.4 Systems containing a single power source
12.5 Systems containing more than one power source
12.6 Simple apparatus
12.7 Assessment of capacitance, inductance and cable L/R
12.8 Faults in multi-circuit cables
12.9 Type verifications and type tests
13 Predefined systems
Annex A (informative) Assessment of a simple intrinsically safe system
Annex В (informative) Assessment of circuits with more than one power source
Annex C (informative) Interconnection of non-linear and linear intrinsically safe circuits
Annex D (informative) Verification of inductive parameters
Annex E (informative) Example format for a descriptive system document
Annex F (informative) Use of simple apparatus in systems
Annex G (normative) FISCO systems
Bibliography
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