March 2026: Major Electrical Engineering Standards Released

March 2026 is a landmark month for professionals in the electrical engineering sector, with the publication of five pivotal international standards. These updates drive advancements in power delivery, equipment safety, digital data interchanges, and sustainable transportation infrastructure. Whether you’re designing systems, overseeing compliance, or managing procurement, these standards provide critical requirements and guidelines to future-proof your projects and operations. This article delivers a thorough examination of each standard, highlighting changes and insights to guide your implementation efforts. (Part 1 of 3)

Overview / Introduction

The electrical engineering industry underpins virtually every other sector—powering factories, transportation, communications, and homes worldwide. International standards in this field ensure interoperability, safety, performance, and innovation, while reducing risks and costs. With rapid technological changes and evolving regulatory frameworks, keeping pace with new standards is essential for organizations intent on competitive advantage and regulatory compliance.

In March 2026, five crucial standards were published, covering:

• USB Power Delivery for advanced device charging
• Electrical installations for mobile/transportable units
• Digital product data for high-voltage switchgear
• Functional safety for safety-related machine control systems
• EV charging connector compatibility

This article walks you through each publication, its scope, requirements, and the impact on your business.

Detailed Standards Coverage

EN IEC 62680-1-2:2026 – USB Power Delivery Specification

Universal Serial Bus interfaces for data and power – Part 1-2: Common components – USB Power Delivery specification

This edition of EN IEC 62680-1-2 sets the global requirements for USB Power Delivery (USB PD) systems, supporting power supply capabilities up to 100W (Standard Power Range, SPR) and 240W (Extended Power Range, EPR). Its primary focus is to ensure a robust and flexible architecture for delivering power and data across USB-compliant hosts, devices, hubs, chargers, and cables.

Key requirements and scope:

• Defines architecture, protocols, connectors, and cable assemblies essential for efficient power management
• Fully backwards compatible with earlier USB standards while introducing EPR and Adjustable Voltage Supply (AVS)
• Addresses SPR (up to 100W) and EPR (up to 240W) profiles

Who should comply:

• System OEMs, device designers, charger manufacturers, cable assembly companies, and peripheral developers
• Consumer electronics, computing, industrial IoT, and power tool sectors

Implementation implications:

• Ensures device interoperability and power negotiation
• Enables market differentiation while maintaining unified technical infrastructure
• Harmonizes compliance with the USB-IF Power Delivery Specification revision 3.2, version 1.1

Notable changes from the 7th edition (2024):

• Introduction of Extended Power Range (EPR) and Adjustable Voltage Supply (AVS)
• Overhauled requirements for source/sink power transitions and capability exchange
• Enhanced protocols for device safety and reliability

Key highlights:

• Backward compatibility with existing USB infrastructure
• AVS and EPR modes for emerging high-powered devices
• Flexible implementation with detailed safety and interoperability requirements

Access the full standard:View EN IEC 62680-1-2:2026 on iTeh Standards

FprHD 60364-7-717:2025 – Low-voltage Installations for Mobile/Transportable Units

Low-voltage electrical installations – Part 7-717: Requirements for special installations or locations – Mobile or transportable units

This standard addresses the unique electrical safety and installation challenges in mobile and transportable units, such as outside broadcasting vans, emergency response vehicles, and temporary on-site offices.

Key requirements and scope:

• Applies to fixed installations inside mobile/transportable structures (excludes automotive circuits, caravans, pleasure crafts, and generating sets)
• Enhances detail on design, conductor arrangement, earthing, and system safety
• Updates protection strategies, especially automatic disconnection and additional protective measures

Who should comply:

• Manufacturers and operators of mobile/transportable industrial or commercial units
• Events management, construction, emergency services
• Contractors tasked with electrical design and certification for such environments

Implementation implications:

• Requirements for wiring, overvoltage protection, and operational safety
• Updated SPD (surge protective device) specifications
• Clearer earthing/bonding practices and equipment selection

Notable changes from the previous edition:

• Extended and refined scope and definitions
• Updated Clause 717.41 for alignment with latest IEC 60364-4-41 amendments
• Added automatic supply disconnection and additional protection clauses
• Simplified figures and clarified SPD designations

Key highlights:

• Comprehensive approach to safety for mobile/transportable installations
• Simplified figures and precise terminology
• Enhanced protection against electric shocks and transient overvoltages

Access the full standard:View FprHD 60364-7-717:2025 on iTeh Standards

IEC TR 62271-321:2026 – High-voltage Switchgear Data & Catalogue Properties

High voltage switchgear and controlgear – Part 321: Product data and properties for information exchange – Catalogue data

As digitization transforms power systems, the need for standardized data exchange for high-voltage switchgear is acute. IEC TR 62271-321 provides a comprehensive dictionary of properties and classes for components operating above 1 kV AC and 1.5 kV DC, harmonizing data formats across all IEC 62271 series products.

Key requirements and scope:

• Covers all products in the IEC 62271 series: switchgear, controlgear assemblies, and subcomponents
• Standardizes product data for digital exchanges during design, procurement, installation, operation, maintenance, and end-of-life
• Each property has a clear name, definition, value list, format, and unit for consistent communication

Who should comply:

• Manufacturers, utilities, engineering firms, procurement specialists, and digital solution providers in high-voltage power transmission/distribution

Implementation implications:

• Streamlines product selection, tender documentation, and inventory management
• Enables interoperability of digital records, contributing to digital twin initiatives
• Reduces manual data re-formatting, misinterpretation, and data migration issues

Key highlights:

• Facilitates reliable, digital product data exchange
• Supports e-Catalogue and e-Procurement initiatives
• Enhances system interoperability across power network lifecycle

Access the full standard:View IEC TR 62271-321:2026 on iTeh Standards

IEC 62061:2021 – Functional Safety of Machinery Control Systems

Safety of machinery – Functional safety of safety-related control systems

Functional safety is paramount for industrial machinery, demanding rigorous attention to risk reduction, system integration, and validation. IEC 62061:2021 addresses both the design and ongoing assessment of safety-related control systems (SCS) used in stationary and coordinated machinery setups.

Key requirements and scope:

• Specifies the entire lifecycle from design, integration, and verification to validation
• Applies to non-portable machines and groups of machines working in a coordinated way
• Aligns terminology, structure, and process with IEC 61508 (all parts)
• Addresses high and continuous demand modes
• Introduces requirements for software verification, configuration management, and periodic testing

Who should comply:

• Machine manufacturers, control system designers, automation solution providers
• Quality managers, safety engineers, and system integrators in manufacturing

Implementation implications:

• Mandates functional safety plans and documentation
• Requires independent software verification & validation
• Expands to include non-electrical safety technologies
• Prescribes best practice for hardware/system reliability, diagnostics, and security references

Notable changes from previous edition:

• Switch from SILCL to "maximum SIL" of a subsystem
• More detailed guidance on software (including use cases and independence)
• New annexes on typical MTTFD values and calculation methods
• Improved clarity and alignment with up-to-date IEC 61508 guidance

Key highlights:

• Full-lifecycle approach to functional safety
• Extended coverage to non-electrical safety systems
• Improved diagnostic and reliability calculation guidance

Access the full standard:View IEC 62061:2021 on iTeh Standards

FprEN IEC 62196-3:2025 – Conductive Charging & Compatibility for Electric Vehicles

Plugs, socket-outlets, vehicle connectors, and vehicle inlets – Conductive charging of electric vehicles – Part 3: Dimensional compatibility requirements for DC and AC/DC pin and contact-tube vehicle couplers

As electric mobility accelerates globally, ensuring the interoperability and safety of charging interfaces is crucial. FprEN IEC 62196-3:2025 delivers the framework for dimensional compatibility of conductive charging connectors for electric vehicles (EVs), supporting both DC and combination AC/DC systems.

Key requirements and scope:

• Establishes dimensional and mechanical requirements for DC and AC/DC plug, socket, connector, and vehicle inlet interfaces
• Addresses marking, ratings, electrical/mechanical strength, corrosion resistance, thermal management, and safety testing
• Includes standard sheets for test gauges and compatibility

Who should comply:

• Electric vehicle manufacturers, charge point operators, infrastructure planners, and connector manufacturers
• Automotive engineers, fleet operators, and procurement teams responsible for EV charging infrastructure

Implementation implications:

• Guarantees compatibility across vehicles and charger types, reducing market fragmentation
• Supports safe, reliable installations in public and private charging scenarios
• Facilitates cross-border and cross-brand interoperability

Key highlights:

• Covers all interface types for advanced DC and AC/DC charging
• Includes rigorous endurance, corrosion, and misalignment tests
• Essential for future-proof EV infrastructure planning

Access the full standard:View FprEN IEC 62196-3:2025 on iTeh Standards

Industry Impact & Compliance

Impact on Businesses and Engineering Organizations

Adoption of these new standards ensures:

• Regulatory and contractual compliance across international markets
• Enhanced safety for personnel and end-users
• Streamlined system design, procurement, and maintenance workflows
• Reduction in downtime, warranty, and liability risks
• Preparation for digital innovation (e.g., digital twins, interoperable platforms)

Compliance Timelines and Considerations

• Organizations should perform a gap assessment against these new requirements
• Timeline for transition depends on region and local regulations; proactive compliance provides a market edge
• Non-compliance risks include legal penalties, operational disruptions, and loss of market access

Benefits

• Improved product interoperability and lifecycle management
• Increased customer confidence and satisfaction
• Future-proofing for technology and regulatory changes

Technical Insights

Common Technical Requirements Across These Standards

• Clear specification of interfaces and compatibility (USB PD, EV chargers)
• Defined requirements for protective measures (earthing, surge, overvoltage, safety functions)
• Consistent terminology and product data (especially through digital product dictionaries)

Implementation Best Practices

1. Early Integration: Integrate new standards into product development and procurement specifications early.
2. Staff Training: Educate engineering, compliance, and maintenance teams on new requirements and documentation.
3. Testing and Certification: Engage certified third-party labs where mandated for type testing, validation, and certification.
4. Digital Tools: Adopt digital product reference dictionaries (per IEC TR 62271-321) for data management and compliance tracking.
5. Risk Assessment: For functional safety (IEC 62061), perform regular risk reviews and update SCS documentation according to evolving processes or equipment changes.

Testing & Certification Considerations

• USB PD and EV connectors: Physical, electrical, and protocol tests for interoperability, safety, and performance
• Mobile units: Verification of protection, wiring integrity, and SPD operation
• High-voltage equipment: Data consistency checks, digital model verifications, field trials
• Machinery: Extensive safety validations, periodic testing, and reporting as part of lifecycle management

Conclusion / Next Steps

Staying up to date with international standards, such as those released this March for electrical engineering, is critical to maintaining compliance, safety, and technical leadership. These five publications set the stage for enhanced interoperability, digitalization, and system resilience across a broad spectrum of applications—from consumer electronics and industrial machinery to high-voltage grids and the rapidly expanding electric vehicle market.

Recommendations:

• Review each standard in detail using the direct iTeh Standards links provided
• Update your compliance and project documentation to reflect new requirements
• Schedule training and knowledge-sharing sessions for technical teams
• Monitor regulatory updates and market signals for subsequent parts in this series

Stay ahead—explore the standards, initiate gap assessments, and engage with iTeh Standards to ensure your organization leverages the latest requirements for optimal performance and compliance.