BSI PD IEC/TR 62368-2:2011
$215.11
Audio/video, information and communication technology equipment – Explanatory information related to IEC 62368-1
| Published By | Publication Date | Number of Pages |
| BSI | 2011 | 110 |
Purpose: To identify the purpose and applicability of this standard and the exclusions from the scope.
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. The TC108 experts are experts in hardware safety, and have little or no expertise to properly address functional safety requirements.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | FOREWORD |
| 6 | Clause 0 Introduction – Principles of this product safety standard Clause 1 Scope Clause 3 Terms and definitions |
| 8 | Clause 4 General requirements |
| 11 | Clause 5 Electrically-caused injury |
| 13 | Figures Figure 1 – Conventional 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/TS 60479-1:2005, Figure 20) Tables Table 1 – Time/current zones for a.c. 15 Hz to 100 Hzfor hand to feet pathway (see IEC/TS 60479-1:2005, Table 11) |
| 14 | Figure 2 – Conventional time/current zones of effects of d.c. currents on persons for a longitudinal upward current path (see IEC/TS 60479-1:2005, Figure 22) Table 2 – Time/current zones for d.c. for hand to feet pathway(see IEC/TS 60479-1:2005, Table 13) |
| 15 | Figure 3 – Illustration that limits depend on both voltage and current |
| 17 | Table 3 – Limits for steady-state voltages (see IEC 61201:2007) |
| 18 | Table 4 – Limit values of accessible capacitance (threshold of pain) – (IEC 61201:2007) |
| 19 | Table 5 – Total body resistances RT for a current path hand to hand, d.c.,for large surface areas of contact in dry condition |
| 20 | Figure 4 – Safeguards between an energy source and an ordinary person |
| 21 | Figure 5 – Safeguards between an energy source and an instructed person |
| 22 | Figure 6 – Safeguards between energy sources and a skilled person |
| 29 | Figure 7 – Illustration of transient voltages on paired conductor external circuits |
| 30 | Figure 8 – Illustration of transient voltages on coaxial-cable external circuits |
| 32 | Table 6 – Voltage drop across clearance and solid insulation in series |
| 37 | Figure 9 – Example illustrating accessible internal wiring |
| 40 | Figure 10 – Overview of protective conductors |
| 42 | Figure 11 – Example of a typical touch current measuring network |
| 43 | Clause 6 Electrically caused fire |
| 47 | Figure 12 – Possible safeguards against electrically-caused fire |
| 49 | Table 7 – Examples of application of various safeguards |
| 50 | Figure 13 – Fire clause flow chart |
| 51 | Table 8 – Basic safeguards against fire under normal operating conditionsand abnormal operating conditions |
| 52 | Table 9 – Supplementary safeguards against fire under single fault conditions |
| 53 | Table 10 – Method 1: Reduce the likelihood of ignition |
| 54 | Figure 14 – Prevent ignition flow chart |
| 56 | Figure 15 – Control fire spread summary 1 |
| 57 | Figure 16 – Control fire spread summary 2 |
| 60 | Table 11 – Method 2: Control fire spread |
| 65 | Figure 17 – Fire cone application to large component |
| 66 | Table 12 – Fire barrier and fire enclosure flammability requirements |
| 69 | Table 13 – Summary – Fire enclosure and fire barrier material requirements |
| 71 | Table 14 – Other flammability requirements |
| 72 | Clause 7 Chemically-caused injury |
| 73 | Table 15 – Control of chemical hazards |
| 74 | Figure 18 – Flowchart demonstrating the hierarchy of hazard management |
| 75 | Clause 8 Mechanically-caused injury Figure 19 – Model for chemical injury |
| 79 | Table 16 – Summary for 8.6 |
| 83 | Clause 9 Thermal burn injury Figure 20 – Model for a burn injury |
| 85 | Figure 21 – Model for safeguards against thermal burn injury Figure 22 – Model for absence of a thermal hazard |
| 86 | Figure 23 – Model for presence of a thermal hazard with a physical safeguard in place Figure 24 – Model for presence of a thermal hazard with behavioural safeguard in place |
| 90 | Clause 10 Radiation |
| 91 | Table 17 – Protection against radiation |
| 92 | Figure 25 – Overview of operating modes Annex B Normal operating condition tests, abnormal operating condition tests and single fault condition tests |
| 93 | Annex D Test generators Annex E Test conditions for equipment containing audio amplifiers Annex F Equipment markings, instructions, and instructional safeguards |
| 94 | Annex G Components |
| 98 | Annex H Criteria for telephone ringing signals |
| 99 | Figure 26 – Current limit curves |
| 100 | Annex J Insulated winding wires for use without interleaved insulation Annex K Safety interlocks Annex L Disconnect devices |
| 101 | Annex M Batteries and fuel cells |
| 102 | Annex O Measurement of creepage distances and clearances Annex P Safeguards against entry of foreign objects, foreign liquids, and spillage of internal liquids Annex Q Interconnection with building wiring Annex R Limited short-circuit test Annex S Tests for resistance to heat and fire |
| 103 | Annex T Mechanical strength tests |
| 105 | Annex U Mechanical strength of CRTs and protection against the effects of implosion |
| 106 | Bibliography |
