ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 15: FUNCTIONAL SAFETY REQUIREMENTS FOR INSULATION MONITORING DEVICES IN IT SYSTEMS AND EQUIPMENT FOR INSULATION FAULT LOCATION IN IT SYSTEMS
International Electrotechnical Committee
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 Definition of safety functions embedded in
IMDs and IFLSs
5 Requirements on products implementing safety-related
functions
6 Management of functional safety during the development
lifecycle
7 Management of functional safety during the realisation
lifecycle of IMDs and IFLSs
8 Requirements for modifications
9 Proven in use approach
Annex A (informative) - Risk analysis and SIL assignment for
IMDs and IFLSs
Annex B (informative) - Examples for the determination of PFD,
DC and SFF
Annex C (informative) - Failure rate databases
Annex D (informative) - Guide to embedded software design
and development
Annex E (informative) - Information for the assessment of
safety functions
Annex F (informative) - Example of applications
Bibliography
Defines requirements related to functional safety and is based on the IEC 61508 standard series for the realization of insulation monitoring devices (IMD) as specified in IEC 61557-8 and for insulation fault location systems (IFLS) according to IEC 61557-9, according to phase 10 of the IEC 61508-1 lifecycle.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 85 |
