IEC TS 61851-27:2026

Overview

IEC TS 61851-27:2026 specifies technical requirements for electric vehicle (EV) supply equipment with automatic docking and undocking functions (aEVSE), utilizing a vehicle coupler according to IEC 62196-2, IEC 62196-3, or IEC TS 62196-3-1. This technical specification, developed by the International Electrotechnical Commission (IEC), aims to facilitate reliable and safe automatic conductive energy transfer between EV supply equipment and electrically propelled road vehicles, in accordance with ISO TS 5474-5.

By addressing automatic docking processes, the standard supports the next generation of EV charging systems, enhancing usability for autonomous vehicles, increasing convenience for users, and enabling greater accessibility for people with disabilities. The document also lays foundational requirements for single-connector aEVSE systems, anticipating future expansion for multi-connector and higher power (megawatt charging) solutions.

Key Topics

• Scope and Applicability

  • Covers single-connector aEVSE for conductive charging, using couplers defined in IEC 62196-2, -3, or TS 62196-3-1.
  • Does not apply to aEVSE using electro-mechanical interfaces under EN 50696 or those defined in IEC TS 61851-26.
  • Focuses exclusively on automatic conductive energy transfer via vehicle connectors, not plug and socket-outlet systems.

• System Architecture

  • Specifies the requirements for the interaction between an aEVSE and an electrically propelled road vehicle.
  • Outlines necessary safety, control, and communication architectures (with further interoperable communication standardization under consideration).

• Classification and Requirements

  • Classifies aEVSE by coupler type, service environment (indoor/outdoor), installation (restricted/unrestricted access), and communication method (proprietary, interoperable).
  • Includes mechanical, thermal, and electrical protection measures for reliable and safe operation.
  • Details requirements for marking, user and installation manuals, test, and measurement methods.

• Space and Operation

  • Defines essential spatial concepts: obstacle-free space, home space, and mating space for manipulators.
  • Addresses limits on force, pressure, and movement speed to prevent injury or equipment damage.
  • Provides guidelines for emergency stop features and safety during docking/undocking procedures.

Applications

IEC TS 61851-27:2026 is crucial for manufacturers, integrators, and operators of EV charging infrastructure, especially those developing:

• Automated EV charging stations in public or private environments
• Charging systems for autonomous and driverless vehicles
• High-volume fleet charging solutions where automatic, hands-free operation is essential
• Accessible charging solutions for users with mobility challenges
• Scalable charging infrastructure supporting future multi-connector and high-power (e.g., megawatt charging) deployments

This standard enables the deployment of aEVSEs that streamline EV charging, improve operational safety, and facilitate smart grid integration. Its use is integral to forward-looking EV infrastructure projects seeking compliance with global EV charging standards.

Related Standards

For comprehensive EV charging system conformity, refer to these related standards:

• IEC 61851-1: General requirements for electric vehicle conductive charging systems
• IEC 61851-23: DC EV supply equipment requirements
• IEC 62196 Series: Specifications for plugs, socket-outlets, vehicle connectors, and inlets
• IEC TS 61851-28: Under consideration – interoperable communication for aEVSE
• IEC 61851-21-2: EMC requirements for EV supply equipment
• ISO TS 5474-5: Functional and safety requirements for automatic conductive power transfer
• ISO 12100 / ISO 10218-1 / ISO TS 15066: Safety principles covering risk assessment, robots, and collaborative operation

Adopting IEC TS 61851-27:2026 supports interoperability, safety, and future-proofing in the rapidly evolving field of EV charging technology.