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Review: IEC 62477-2 (PDF) — Safety of Power Electronics Converters — Part 2
Summary
Insulation & Overvoltage: It mandates higher insulation performance, such as a 3 kVrms temporary overvoltage requirement for systems above 1,000 V AC, compared to the 2.2 kVrms used for lower voltages. Iec 62477-2 Pdf
| Clause | Title | Key content | |--------|-------|--------------| | 1 | Scope | Defines applicability to traction PECS (railways, guided transport). | | 2 | Normative references | Lists other standards (e.g., IEC 62477-1, EN 50163, IEC 62128). | | 3 | Terms and definitions | Specific traction terms: “pantograph”, “regenerative mode”, “deadman circuit”. | | 4 | General requirements | Environmental conditions (vibration, humidity, pollution degree PD3/PD4). | | 5 | Protection against electric shock | Touch current limits in traction systems; bonding and earthing rules. | | 6 | Insulation coordination | Voltage surges from overhead lines; test voltages for 1.5 kV DC, 3 kV DC, 15 kV AC, 25 kV AC systems. | | 7 | Thermal safety | Fire prevention for converters in confined rolling stock spaces. | | 8 | Mechanical hazards | Enclosures against impact (IK code), derailment forces. | | 9 – 12 | Additional protection | Fault detection, emergency stop integration, protective bonding monitoring. | | Annexes | Normative & informative | Example circuits for earth fault protection, insulation monitoring devices (IMD) for DC traction. | Review: IEC 62477-2 (PDF) — Safety of Power
Thermal and Fire Risks: Specifies measures to prevent fire and thermal hazards under both normal and single-fault conditions. Platforms like IEC Standards Plus , TechStreet ,
IEC 62477-2 Overview
3. Grid Interaction and Anti-Islanding (Clause 7 – Unique to Part 2)
This is where Part 2 diverges most from Part 1. For grid-tied renewable converters:
Option 3: Standards Subscription Services
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