IEC TS 61851-3-4:2023

IEC TS 61851-3-4:2023 addresses electric vehicle conductive charging system requirements for DC EV supply equipment where protection relies on double or reinforced insulation, with a specific focus on general definitions and requirements for CANopen communication. For engineering teams, test laboratories, and compliance reviewers, this technical document helps define a common basis for communication-related evaluation and documentation within charging equipment development. It is relevant where consistent data exchange, functional clarity, and conformity assessment support are needed in the design and verification of EV charging systems.

Overview of IEC TS 61851-3-4:2023

IEC TS 61851-3-4:2023 appears intended to support the technical framing of CANopen communication in DC EV supply equipment using double or reinforced insulation as the primary protection concept. Its scope is important for organizations that need to align engineering documentation, interface definitions, and verification activities around a clearly identified communication approach. In practice, it can support technical review, product evaluation, and compliance workflows where charging-system behavior must be described and assessed in a structured and consistent way.

Compliance applications of IEC TS 61851-3-4:2023

This document is most useful during development, laboratory evaluation, and procurement review for DC charging equipment that incorporates CANopen-based communication functions. It may be referenced when preparing technical documentation, planning verification activities, or checking that system-level communication requirements are defined consistently across engineering teams and suppliers. For organizations involved in conformity assessment, it can also serve as a targeted compliance reference when validating communication-related design choices within EV supply equipment and related test setups.

Importance of compliance with IEC TS 61851-3-4:2023

Using IEC TS 61851-3-4:2023 in quality workflows can reduce ambiguity in communication definitions and help support operational consistency across design, testing, and certification preparation. Clear alignment with the document may improve safety-related documentation, interoperability expectations, and risk management for DC EV charging equipment that depends on reinforced-insulation protection concepts. It is also valuable for procurement and engineering teams that need a defensible basis for technical assessment, supplier comparison, and structured validation of charging-system communication behavior.

• General definitions and requirements for CANopen communication in DC EV supply equipment
• Support for engineering documentation and interface clarification during product development
• Useful reference for laboratory evaluation and communication-focused verification activities
• Relevant to conformity assessment preparation for EV charging equipment using reinforced-insulation protection