In 2014 the IEC introduced edition 2 of the Hazard-Based
Safety Engineering (HBSE) IEC 62368-1 standard.
Intended to replace new submittals for IEC 60950-1 and IEC 60065 in June
2019, it covers hazards and hazard prevention for ITE (Information Technology
Equipment) and audio and visual equipment.
UL & CSA published the 2nd edition of the IEC
62368-1 standard on December 1st, 2014, following Europe’s publication
in September 2014.
The current standards are known as “prescriptive” and
closely control product design. The new
standard retains some of those design rules, but offers performance options
that might allow some design flexibility.
It must be stressed that unlike IEC 60601-1, a formal risk analysis is
not required. It is also not a simpler
merger of 60950-1 and 60065.
No date has been set yet for when “grandfathering” of the
60950-1 and 60065 standards ends. It has
been recommended by some test authorities that if a product is going to be
removed from the market by 2018, then do not proceed with certifying to IEC
62368. As there may be some regions that
have not accepted the new standard, products that will be on the market after
2018 should look at obtaining certification to IEC 62368, but keep the existing
60950-1 and 60065 certifications.
Does this mean that power supply manufacturers should start
transitioning over now? No, the IEC
committee recognizes this would impose a huge burden on everyone’s resources,
including the certification bodies. Clause
4.1.1 states that “Components and subassemblies that comply with IEC 60950-1 or
IEC 60065 are acceptable as part of equipment covered by this standard without
further evaluation other than to give consideration to the appropriate use of
the component or sub-assembly in the end product.”
One snippet of information I found this week; ever wonder
where the numbering convention of standards comes from? If a standard is IEC 50xxx it is based on a standard
of CENELEC (European Committee for Electrotechnical Standardization) origin. If it is IEC 55xxx, it is based on CISPR (Special
international committee on radio interference) origins. For standards IEC 6xxxx, they originate from
the IEC (International Electrotechnical Commission).Power Guy
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