ISO 6469-4-2015 PDF

Full title and description

Electrically propelled road vehicles — Safety specifications — Part 4: Post crash electrical safety. This part of ISO 6469 specifies electrical safety requirements for electric propulsion systems and conductively connected auxiliary electric systems following vehicle crash conditions, with the objective of protecting persons inside and outside the vehicle.

Abstract

ISO 6469-4:2015 defines requirements to ensure post-crash electrical safety for electrically propelled road vehicles with voltage class B electric circuits (roughly >30 V a.c. to ≤1 000 V a.c. or >60 V d.c. to ≤1 500 V d.c.). It sets criteria for protection against electric shock and thermal hazards after a crash, specifies limits on residual voltages and required protective measures, and clarifies that it does not itself define crash test procedures or provide comprehensive first‑responder/repair guidance. It also excludes motorcycles and mopeds.

General information

• Status: Published (International Standard; listed for review/revision by ISO).
• Publication date: September 2015 (ISO publication: 2015-09).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 43.120 — Electric road vehicles.
• Edition / version: Edition 1 (ISO 6469-4:2015).
• Number of pages: 15 pages (ISO published edition). Note: national/adopted versions (for example SS‑ISO 6469‑4) can show different pagination.

Scope

The standard applies to electrically propelled road vehicles that use voltage class B electric circuits and addresses post-crash electrical safety requirements — i.e., the state of the vehicle electrical system following an applicable crash test or crash test configuration specified by regional or national crash test procedures. It does not apply to motorcycles and mopeds, does not itself prescribe crash test procedures, and is not a comprehensive manual for emergency services or maintenance personnel.

Key topics and requirements

• Post-crash criteria for protection against electric shock for voltage class B circuits (residual voltage limits, isolation/insulation integrity requirements).
• Requirements for disconnection or secure isolation of high-voltage circuits after a crash (automatic or mechanically retained disconnects where applicable).
• Measures to prevent hazardous conductive paths and thermal incidents following structural damage.
• Applicability tied to nationally or regionally published crash test procedures — the standard’s post-crash requirements apply when vehicles/test configurations are specified in those procedures.
• Exclusions and limits: motorcycles/mopeds excluded; not a crash test method standard; not intended as exhaustive guidance for first responders or repair personnel.
• Terminology and referencing to the broader ISO 6469 series and related electrical-safety standards for charging interfaces and RESS where relevant.

Typical use and users

Primary users include automotive design and safety engineers, vehicle homologation and certification bodies, crash-test laboratories, national standards/adoption bodies, and regulatory authorities concerned with electric vehicle safety. The standard is also used by manufacturers to specify post-crash electrical safety measures during design and by test houses when applying regional crash procedures to electrically propelled vehicles. Emergency services may consult it for high-level post-crash electrical considerations, but should rely on dedicated first‑responder guidance for operational actions.

Related standards

ISO 6469-4 is part of the ISO 6469 series addressing electrically propelled road vehicle safety; related parts and complementary standards include ISO 6469-1 (RESS safety), ISO 6469-2 (vehicle operational safety), ISO 6469-3 (electrical safety), ISO 17409 (conductive charging safety requirements), and ISO 19363 (wireless power transfer safety). National/adopted variants (for example SS‑ISO 6469‑4) and regional regulations may reference or adopt ISO 6469-4 with editorial changes.

Keywords

post-crash electrical safety, electrically propelled road vehicles, voltage class B, RESS, electric propulsion system, residual voltage, isolation, ISO 6469-4, post-crash protection.

FAQ

Q: What is this standard?

A: ISO 6469-4:2015 is the part of the ISO 6469 series that specifies post-crash electrical safety requirements for electrically propelled road vehicles.

Q: What does it cover?

A: It covers electrical safety criteria and required protective measures for voltage class B circuits following an applicable crash — for example limits on residual voltage, requirements for securing or disconnecting high-voltage circuits, and measures to prevent shock and thermal hazards after a crash. It does not define crash test methods and excludes motorcycles/mopeds.

Q: Who typically uses it?

A: Vehicle manufacturers, safety and systems engineers, homologation/certification bodies, crash test laboratories, and standards organizations use this standard to design and assess post-crash electrical safety. Emergency services may reference it for background but should rely on dedicated operational guidance for responders.

Q: Is it current or superseded?

A: ISO 6469-4 was published in September 2015 (Edition 1). ISO records indicate the standard is published and has been listed for systematic review/revision activity; there has been activity to review and/or prepare updates (ISO lifecycle entries indicate review actions and work items). Users should check the latest national/adopted texts or ISO catalogs for any amendments or newer editions before relying on the standard for compliance.

Q: Is it part of a series?

A: Yes — it is Part 4 of the ISO 6469 series (Electrically propelled road vehicles — Safety specifications). Other parts in the series address RESS, operational safety and electrical safety (Parts 1–3 and subsequent updates).

Q: What are the key keywords?

A: Post-crash safety, electrical isolation, voltage class B, RESS, electric vehicle safety, residual voltage, disconnect mechanisms, ISO 6469-4.