Purpose: To identify the purpose and applicability of this standard and the exclusions from the scope.<\/p>\n
Rationale: The scope excludes requirements for functional safety. Functional safety is addressed in IEC 61508-1. Because the scope includes computers that may control safety systems, functional safety requirements would necessarily include requirements for computer processes and software.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 4<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | Clause 0 Principles of this product safety standard <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Clause 1 Scope Clause 2 Normative references Clause 3 Terms, definitions and abbreviations <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | Clause 4 General requirements <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Tables Table\u00a01 \u2013 General summary of required safeguards <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Clause 5 Electrically-caused injury <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Figures Figure\u00a01\u00a0\u2013\u00a0Conventional time\/current zones of effects of a.c. currents (15 Hz to 100 Hz) on persons for a current path corresponding to left hand to feet (see IEC\u00a0TS 60479-1:2005, Figure 20) <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Figure\u00a02\u00a0\u2013\u00a0Conventional time\/current zones of effects of d.c. currents on personsfor a longitudinal upward current path (see IEC\u00a0TS 60479-1:2005, Figure 22) Table\u00a02 \u2013 Time\/current zones for a.c. 15 Hz to 100 Hzfor hand to feet pathway (see IEC\u00a0TS 60479-1:2005, Table 11) <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Figure\u00a03\u00a0\u2013\u00a0Illustration that limits depend on both voltage and current Table\u00a03\u00a0\u2013\u00a0Time\/current zones for d.c. for hand to feet pathway(see IEC\u00a0TS 60479-1:2005, Table 13) <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Table 4 \u2013 Limit values of accessible capacitance (threshold of pain) <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Table\u00a05\u00a0\u2013\u00a0Total body resistances RT for a current path hand to hand, d.c.,for large surface areas of contact in dry condition <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Figure\u00a04 \u2013 Illustration of transient voltages on paired conductor external circuits <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Figure\u00a05 \u2013 Illustration of transient voltages on coaxial-cable external circuits Table\u00a06\u00a0\u2013\u00a0Insulation requirements for external circuits <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Figure\u00a06 \u2013\u00a0Basic and reinforced insulation in Table 15 of IEC\u00a062368-1:2014 \u2013Ratio reinforced to basic <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Figure\u00a07 \u2013\u00a0Reinforced clearances according to Rule 1, Rule 2, and Table 15 <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Table\u00a07\u00a0\u2013\u00a0Voltage drop across clearance and solid insulation in series <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | Figure\u00a08\u00a0\u2013\u00a0Example illustrating accessible internal wiring <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | Figure\u00a09\u00a0\u2013\u00a0Waveform on insulation without surgesuppressors and no breakdown Figure\u00a010\u00a0\u2013\u00a0Waveforms on insulation during breakdownwithout surge suppressors <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | Figure\u00a011\u00a0\u2013\u00a0Waveforms on insulation withsurge suppressors in operation Figure\u00a012\u00a0\u2013\u00a0Waveform on short-circuitedsurge suppressor and insulation <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | Figure\u00a013\u00a0\u2013\u00a0Example for an ES2 source <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | Figure\u00a014\u00a0\u2013\u00a0Example for an ES3 source <\/td>\n<\/tr>\n | ||||||
| 49<\/td>\n | Figure\u00a015\u00a0\u2013\u00a0Overview of protective conductors <\/td>\n<\/tr>\n | ||||||
| 53<\/td>\n | Figure\u00a017\u00a0\u2013\u00a0Touch current from a floating circuit Figure\u00a018\u00a0\u2013\u00a0Touch current from an earthed circuit <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | Figure\u00a019\u00a0\u2013\u00a0Summation of touch currents in a PABX <\/td>\n<\/tr>\n | ||||||
| 55<\/td>\n | Clause 6 Electrically-caused fire <\/td>\n<\/tr>\n | ||||||
| 59<\/td>\n | Figure\u00a020\u00a0\u2013\u00a0Possible safeguards against electrically-caused fire <\/td>\n<\/tr>\n | ||||||
| 61<\/td>\n | Table 8 \u2013 Examples of application of various safeguards <\/td>\n<\/tr>\n | ||||||
| 62<\/td>\n | Figure\u00a021 \u2013 Fire clause flow chart <\/td>\n<\/tr>\n | ||||||
| 63<\/td>\n | Table 9\u00a0\u2013\u00a0Basic safeguards against fire under normal operating conditionsand abnormal operating conditions <\/td>\n<\/tr>\n | ||||||
| 64<\/td>\n | Table 10 \u2013 Supplementary safeguards against fire under single fault conditions <\/td>\n<\/tr>\n | ||||||
| 65<\/td>\n | Table\u00a011\u00a0\u2013\u00a0Method 1: Reduce the likelihood of ignition <\/td>\n<\/tr>\n | ||||||
| 66<\/td>\n | Figure\u00a022 \u2013 Prevent ignition flow chart <\/td>\n<\/tr>\n | ||||||
| 68<\/td>\n | Figure\u00a023 \u2013 Control fire spread summary <\/td>\n<\/tr>\n | ||||||
| 69<\/td>\n | Figure\u00a024 \u2013 Control fire spread PS2 <\/td>\n<\/tr>\n | ||||||
| 70<\/td>\n | Figure\u00a025 \u2013 Control fire spread PS3 <\/td>\n<\/tr>\n | ||||||
| 73<\/td>\n | Table\u00a012 \u2013 Method 2: Control fire spread <\/td>\n<\/tr>\n | ||||||
| 78<\/td>\n | Figure\u00a026 \u2013 Fire cone application to large component <\/td>\n<\/tr>\n | ||||||
| 80<\/td>\n | Table\u00a013 \u2013 Fire barrier and fire enclosure flammability requirements <\/td>\n<\/tr>\n | ||||||
| 83<\/td>\n | Table\u00a014 \u2013 Summary \u2013 Fire enclosure and fire barrier material requirements <\/td>\n<\/tr>\n | ||||||
| 85<\/td>\n | Clause 7 Injury caused by hazardous substances <\/td>\n<\/tr>\n | ||||||
| 87<\/td>\n | Table\u00a015 \u2013 Control of chemical hazards <\/td>\n<\/tr>\n | ||||||
| 88<\/td>\n | Figure 27 \u2013 Flowchart demonstrating the hierarchy of hazard management <\/td>\n<\/tr>\n | ||||||
| 89<\/td>\n | Clause 8 Mechanically-caused injury Figure\u00a028 \u2013 Model for chemical injury <\/td>\n<\/tr>\n | ||||||
| 94<\/td>\n | Figure\u00a029 \u2013 Direction of forces to be applied <\/td>\n<\/tr>\n | ||||||
| 97<\/td>\n | Clause 9 Thermal burn injury Figure\u00a030 \u2013 Model for a burn injury <\/td>\n<\/tr>\n | ||||||
| 99<\/td>\n | Figure\u00a031 \u2013 Model for safeguards against thermal burn injury Figure\u00a032 \u2013 Model for absence of a thermal hazard Figure\u00a033 \u2013 Model for presence of a thermal hazard with a physical safeguard in place <\/td>\n<\/tr>\n | ||||||
| 100<\/td>\n | Figure\u00a034 \u2013 Model for presence of a thermal hazard with behavioural safeguard in place <\/td>\n<\/tr>\n | ||||||
| 104<\/td>\n | Clause 10 Radiation Table\u00a016 \u2013 Protection against radiation <\/td>\n<\/tr>\n | ||||||
| 106<\/td>\n | Figure\u00a035 \u2013 Graphical representation of LAeq,T <\/td>\n<\/tr>\n | ||||||
| 107<\/td>\n | Figure 36 \u2013 Overview of operating modes <\/td>\n<\/tr>\n | ||||||
| 111<\/td>\n | Figure 37 \u2013 Voltage-current characteristics (typical data) <\/td>\n<\/tr>\n | ||||||
| 116<\/td>\n | Figure\u00a038\u00a0\u2013\u00a0Current limit curves <\/td>\n<\/tr>\n | ||||||
| 119<\/td>\n | Figure\u00a039\u00a0\u2013\u00a0Example of a dummy battery circuit <\/td>\n<\/tr>\n | ||||||
| 122<\/td>\n | Figure\u00a040\u00a0\u2013\u00a0Example of a circuit with two power sources <\/td>\n<\/tr>\n | ||||||
| 126<\/td>\n | Annex A(informative) Background information related to the use of SPDs <\/td>\n<\/tr>\n | ||||||
| 127<\/td>\n | Figure A.1 \u2013 Installation has poor earthing and bonding \u2013Equipment damaged (from\u00a0ITUT\u00a0K.66) Figure A.2 \u2013 Installation has poor earthing and bonding \u2013 Using main earth bar for protection against lightning strike (from ITU-T K.66) <\/td>\n<\/tr>\n | ||||||
| 128<\/td>\n | Figure A.3 \u2013 Installation with poor earthing and bonding, using a varistorand a GDT for protection against a lightning strike Figure A.4 \u2013 Installation with poor earthing and bonding \u2013 Equipment damaged (TV set) <\/td>\n<\/tr>\n | ||||||
| 129<\/td>\n | Figure A.5 \u2013 Safeguards <\/td>\n<\/tr>\n | ||||||
| 132<\/td>\n | Figure A.6 \u2013 Discharge stages <\/td>\n<\/tr>\n | ||||||
| 133<\/td>\n | Figure A.7 \u2013 holdover <\/td>\n<\/tr>\n | ||||||
| 134<\/td>\n | Figure A.8 \u2013 Discharge <\/td>\n<\/tr>\n | ||||||
| 136<\/td>\n | Figure A.9 \u2013 Characteristics <\/td>\n<\/tr>\n | ||||||
| 137<\/td>\n | Figure A.10 \u2013 Follow on current pictures <\/td>\n<\/tr>\n | ||||||
| 138<\/td>\n | Annex B (informative) Background information related to measurement of discharges \u2013 Determining the R-C discharge time constant for X- and Y-capacitors Figure B.1 \u2013 Typical EMC filter schematic <\/td>\n<\/tr>\n | ||||||
| 140<\/td>\n | Figure B.2 \u2013 100 M\u03a9 oscilloscope probes Table B.1 \u2013 100 M\u03a9 oscilloscope probes Table B.2 \u2013 Capacitor discharge <\/td>\n<\/tr>\n | ||||||
| 142<\/td>\n | Figure B.3 \u2013 Combinations of EUT resistance and capacitancefor 1-s time constant <\/td>\n<\/tr>\n | ||||||
| 143<\/td>\n | Figure B.4 \u2013 240 V mains followed by capacitor discharge <\/td>\n<\/tr>\n | ||||||
| 144<\/td>\n | Figure B.5 \u2013 Time constant measurement schematic <\/td>\n<\/tr>\n | ||||||
| 147<\/td>\n | Table B.3 \u2013 Maximum Tmeasured values for combinationsof REUT and CEUT for TEUT of 1 s <\/td>\n<\/tr>\n | ||||||
| 148<\/td>\n | Figure B.6 \u2013 Worst-case measured time constant values for 100 M\u03a9 and 10 M\u03a9 probes <\/td>\n<\/tr>\n | ||||||
| 149<\/td>\n | Annex C (informative) Background information related to resistance to candle flame ignition <\/td>\n<\/tr>\n | ||||||
| 150<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Audio\/video, information and communication technology equipment – Explanatory information related to IEC 62368-1<\/b><\/p>\n |