IEC 62477-1 applies to power electronic converter systems (PECS), any specified accessories, and their components for electronic power conversion and electronic power switching, including the means for their control, protection, monitoring and measurement, such as with the main purpose of converting electric power, with rated system voltages not exceeding 1 000 V AC or 1 500 V DC.
It applies to PECS which intentionally emit or receive radio waves for radio communication. IEC 62477-1 can also be used as a reference standard for product committees producing product standards for:
— adjustable speed electric power drive systems (PDS),
— standalone uninterruptible power systems (UPS),
— low voltage stabilized DC power supplies,
— bidirectional power converters.
For PECS and their specified accessories for which no product standard exists, IEC 62477-1 provides minimum requirements for safety aspects.
Guidance for use of this group safety publication for product committees is given in Annex S.
— establishes a common terminology for safety aspects relating to PECS,
— establishes minimum requirements for the coordination of safety aspects of interrelated parts within a PECS,
— establishes a common basis for minimum safety requirements for the PECS portion of products that contain PECS,
— specifies requirements to reduce risks of fire, electric shock, thermal, energy and mechanical hazards, during use and operation and, where specifically stated, during service and maintenance, and
— specifies minimum requirements to reduce risks concerning PECS designed as pluggable and permanently connected equipment, whether it consists of a system of interconnected units or independent units, subject to installing, operating and maintaining the PECS in the manner prescribed by the manufacturer.
The text of IEC 62477-1:2022 has been approved in Europe as EN IEC 62477-1:2023 without any changes.