Analysis of the Latest Edition Requirements for IEC/EN/AS 624771: Power Electronic Converter Systems and Equipment
Suzhou, Jiangsu Province, China – August 30, 2026 –
Major Changes in the New Standard1Expanded Scope of Application
Scope of the old-edition standard: Power electronic converter systems (PECS), any specified accessories and their components for electronic power conversion and electronic power switching, including means for control, protection, monitoring and measurement. It applies to equipment primarily intended for power conversion with a rated system voltage not exceeding 1 000 V AC or 1 500 V DC.
It also serves as a reference standard for the following products:
Power drive systems (PDS);
Stand-alone uninterruptible power supply (UPS);
Low-voltage stabilized DC power supplies;
Bidirectional converters.
Key Technical Revisions in the New Edition versus the Old EditionaSimplified the concept of DVC As, including its voltage-time curves bImproved consistency of “protection” and “insulation” concepts in accordance with IEC 61140 cUpdated touch-current limits and added protective-earth (PE) conductor current limits dRewrote requirements for thin-layer tape materials and added relevant tests eAdded insulation requirements for inner layers of multi-layer printed circuit boards fUpdated mechanical-hazard provisions gRevised enclosure requirements hUpdated wiring and connection specifications iRevised requirements for plastic enclosures jAdded component-level requirements kIntroduced multiple new tests (e.g. UV resistance, operating voltage, SPD performance, pre conditioning) lUpdated information and marking requirements mAdded requirements for icon contrast nRevised several annexesFriendly Reminder
Australia has enforced Version 2.0 of the standard. The Date of Withdrawal (DOW) for Version 2.0 in the EU falls on 9 August 2026 and is fast approaching. Given the substantial technical modifications in the new standard, manufacturers are advised to conduct early research, make advance preparations and achieve smooth compliance.
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Suzhou Maili Electric Appliance Co., Ltd. is a professional manufacturer of inverters, chargers, and battery isolators. Having three complete production lines and over 13 years of technical experience. Stable, efficient, innovative and refined is our vision. We have achieved certain results in the modified vehicle industry such as RVs, ambulances, RVs, and industrial supporting industries.
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