IEC 60364-7-722:2018

Overview

IEC 60364-7-722:2018 is part of the IEC 60364 series on low-voltage electrical installations and provides particular requirements for supplies for electric vehicles (EVs). It covers circuits intended to supply energy to EVs and circuits intended to feed electricity back from EVs to the supply network, with circuits terminated at the connecting point. This edition introduced requirements for installations incorporating wireless power transfer, clarified protective measures to allow the use of pantographs in public areas, and added rules for cases where an EV may operate as a source in parallel with other sources. The standard does not address assessment of explosion risk from battery gassing.

Key topics and technical requirements

• Scope and circuit limits
  • Applies to EV supply circuits and circuits for feeding back energy (vehicle-to-grid arrangements under consideration).
  • Circuits are considered up to the connecting point at the EV interface.
• Protection for safety
  • Measures against electric shock: automatic disconnection, electrical separation and related protective device coordination.
  • Requirements related to “placing out of reach” to permit safe use of pantographs in public-access locations.
• Wireless power transfer (WPT)
  • New provisions for installations that incorporate WPT systems (see also IEC 61980 series for EVSE WPT equipment).
• Parallel-source operation
  • Rules for situations where an EV can act as a source in parallel with other supply sources (e.g., microgrids or V2G scenarios).
• Selection and erection of equipment
  • Guidance on protective conductors, earthing arrangements, isolation, switching, and overcurrent protection.
  • Verification and testing requirements for installed systems.
• EMC and voltage disturbances
  • Measures against transient overvoltages, electromagnetic influences and coordination with other protective devices.

Applications and who uses it

This standard is essential for:

• Electrical designers and consulting engineers specifying EV charging infrastructure for public and private sites.
• Charging-station manufacturers and EV supply equipment (EVSE) integrators ensuring compliance at the installation interface.
• Installers, facility managers and utilities implementing safe low-voltage EV supplies, including vehicle-to-grid (V2G) capable systems.
• Safety inspectors and regulators assessing conformity with low-voltage installation requirements.

Related standards

• IEC 60364 (all parts) – general low-voltage installation rules
• IEC 61851 (all parts) – EV conductive charging equipment and charging modes
• IEC 61980 (all parts) – EV wireless power transfer (WPT) equipment
• Other referenced standards: IEC 60269, IEC 60309, IEC 61008/61009, IEC 60947 series, IEC 61557 (testing/monitoring)

IEC 60364-7-722:2018 is a practical reference for safe, standardized design and installation of low-voltage EV supplies, bridging EV charging technology and electrical installation practice.