Overview
IEC 62752:2024 is an important International Standard published by the International Electrotechnical Commission (IEC) that specifies requirements for in-cable control and protection devices (IC-CPDs) used in Mode 2 charging of electric road vehicles. This second edition, replacing the 2016 version and its 2018 amendment, introduces significant technical revisions to enhance safety, reliability, and compatibility in electric vehicle (EV) charging infrastructures.
The standard focuses on portable IC-CPDs that combine critical control and safety functions including detection of residual current leakage, comparison against predefined residual operating values, and automatic disconnection of the circuit to prevent electric shock when residual currents exceed safe thresholds.
Key Topics
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Scope and Application: The standard applies exclusively to IC-CPDs designed for Mode 2 charging, utilizing the household power supply while ensuring user safety during EV charging.
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Control and Protection Functions:
- Detection and monitoring of residual currents to protect against electrical faults.
- Opening electrical circuits automatically when residual current thresholds are exceeded.
- Mandatory temperature control devices to monitor heat in current-carrying components, a key update in this edition enhancing fire safety.
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Classification and Construction:
- Various classifications based on supply type (single phase, two-phase, three-phase), construction design (modular or integrated), and usage mode (portable or wall-mounted).
- Detailed construction requirements covering plug integration, cable connections, and protective conductor paths.
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Electrical and Mechanical Requirements:
- Insulation coordination, dielectric properties, contact mechanisms, and strain relief for flexible cables.
- Clearances and creepage distances to prevent electrical arc and interference.
- Harmonized electromagnetic compatibility (EMC) aligned with IEC 61543 and IEC 61851-21-2 standards.
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Testing and Performance:
- Comprehensive test procedures including new temperature control device assessments.
- Requirements for rated voltage, current capacities, residual current sensitivities, and short-circuit coordination.
- Verification of upstream protective conductor availability.
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Marking and User Information:
- Clear marking of rated quantities, manufacturer data, and safety instructions.
- End-user information guidance to ensure proper and safe usage of IC-CPDs.
Applications
IEC 62752:2024 plays a crucial role in the safe electrification of transportation by standardizing the safety devices essential for Mode 2 EV charging. Typical applications include:
- Portable EV Charging Cables: IC-CPDs integrated into portable charging cables safest for residential and public use.
- Home Charging Systems: Enhancing safety while charging electric vehicles directly from household outlets.
- Public Charging Infrastructure: Ensuring consistent protection mechanisms for user safety in public and semi-public EV charging stations.
- Electric Road Vehicles: Enabling compliance with safety norms for electrical protection in EVs, supporting wider adoption of electric mobility.
By adhering to this standard, manufacturers and service providers can ensure high safety standards, reduce risk of electrical shock, and improve consumer confidence in EV charging.
Related Standards
IEC 62752:2024 complements a range of international standards associated with electric vehicle charging and electrical safety, including:
- IEC 61851 series – Electric vehicle conductive charging systems, particularly IEC 61851-1 and IEC 61851-21-2, relating to charging modes and EMC requirements.
- IEC 61543 – Residual current operated protective equipment.
- IEC 60364 series – Electrical installations of buildings, for general electrical safety and wiring rules.
- ISO 17409 – Safety requirements for EV conductive charging systems (providing additional safety context).
- IEC 62196 – Plugs, socket-outlets, vehicle connectors, and vehicle inlets for conductive charging.
Together, these standards create a comprehensive framework ensuring interoperability, safety, and reliable operation of electric vehicle charging infrastructure globally.
Keywords: IEC 62752, in-cable control and protection device, IC-CPD, electric vehicle charging, Mode 2 charging, residual current detection, electric road vehicles, EV safety standard, temperature control device, electromagnetic compatibility, portable EV charger safety.
Open preview (PDF)In-cable control and protection device (IC-CPD) for mode 2 charging of electric road vehicles
