IEC 62497-2-2010 PDF

Full title and description

St IEC 62497-2-2010 — Railway applications — Insulation coordination — Part 2: Overvoltages and related protection. This international standard specifies simulation and/or test requirements for protection of fixed installations and rolling stock equipment against transient overvoltages on contact-line and train-line networks.

Abstract

IEC 62497-2:2010 defines methods to evaluate and verify protection against transient overvoltages for railway fixed installations (downstream of the substation transformer) and for rolling stock equipment connected to contact and train lines. It focuses on transient overvoltages (short and long pulse simulations and tests) and on distinguishing equipment behaviour with and without metal-oxide surge arresters; long-term overvoltages are excluded.

General information

• Status: Current (stable publication; stability date indicated by publisher).
• Publication date: 18 February 2010.
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 45.060.01 (Railway rolling stock in general).
• Edition / version: Edition 1.0 (2010).
• Number of pages: 24 pages.

Scope

This part of IEC 62497 applies to fixed installations downstream of the secondary of the substation transformer and to rolling stock equipment linked to the contact line of systems defined in IEC 60850 and to equipment linked to a train line. It gives requirements for simulation and/or testing to demonstrate protection against transient overvoltages; it does not treat long‑term overvoltages. The standard covers both equipment protected by metal‑oxide surge arresters and equipment not so protected, and provides reference voltages and test/simulation waveforms for short and long pulses.

Key topics and requirements

• Definitions and classification of contact-line and train-line networks for insulation coordination.
• Requirements for equipment without metal‑oxide surge arresters (behaviour and test conditions).
• Requirements for equipment protected by metal‑oxide surge arresters, including coordination and residual-voltage considerations.
• Simulation methods and recommended waveforms for short and long transient pulses.
• Test procedures for transient overvoltage withstand and verification.
• Reference voltages, tabulated overvoltage levels and an informative annex with voltage‑duration relationships.

Typical use and users

Used by railway system designers, rolling‑stock and traction equipment engineers, electrical protection specialists, test laboratories, infrastructure owners and procurement teams to define, verify and specify insulation coordination and surge‑protection measures for contact and train lines. Also referenced by conformity assessment bodies and standards committees working on railway electrical safety.

Related standards

IEC 62497 is a multi‑part series; Part 1 (IEC 62497-1:2010) covers basic insulation coordination requirements including clearances and creepage distances and is commonly used alongside Part 2. Other related documents include IEC standards on contact-line systems (for definitions and system parameters) and standards addressing surge and electromagnetic compatibility for railway environments.

Keywords

railway applications; insulation coordination; overvoltages; transient overvoltages; surge protection; contact line; train line; metal‑oxide surge arrester; simulation; test requirements.

FAQ

Q: What is this standard?

A: IEC 62497-2:2010 is an international standard that specifies simulation and test requirements for protection against transient overvoltages in railway fixed installations and rolling stock networks (contact-line and train-line).

Q: What does it cover?

A: It covers transient overvoltage scenarios, recommended simulation waveforms for short and long pulses, test methods, reference voltages and specific considerations for equipment with or without metal‑oxide surge arresters; it excludes long‑term overvoltages.

Q: Who typically uses it?

A: Railway electrical designers, rolling‑stock manufacturers, protection engineers, test laboratories, infrastructure operators, procurement and compliance teams.

Q: Is it current or superseded?

A: The 2010 edition (Ed. 1.0) is the published version; the IEC webstore lists the standard as the current edition (publication February 2010) with publisher stability information. Users should check national adoption or consolidated versions for any amendments when applying the standard.

Q: Is it part of a series?

A: Yes. IEC 62497 is a multi‑part series on insulation coordination for railway applications; Part 1 is IEC 62497-1:2010 (basic requirements, clearances and creepage distances) and Part 2 addresses overvoltages and related protection.

Q: What are the key keywords?

A: Insulation coordination, overvoltages, surge protection, contact line, train line, metal‑oxide arrester, transient testing, railway electrical safety.