Case Study – IEC 62368-1

Maxi Tsai

Director, Global High Tech Business Unit

CSA Group

Safety

Colors in HBS 62368-1…

Safety is Colorful…

State of HBS 62368-x

FAQ - 5Ws & 1H

• What else in HBS 62368-x family? Who are they?

• Who (Which country) has already adopted it as national

standards?

• When will them be effective?

• What are those changes expected in the next edition (3rd) of

IEC 62368-1?

• How to manage the potential impact & a better transition?

HBS 62368-x family

Edition Status Publish date

IEC 62368-1 2ndAudio/video, information and communication

technology equipment - Part 1: Safety requirementsPublished 2015

IEC 62368-1 3rdAudio/video, information and communication

technology equipment - Part 1: Safety requirementsDraft 2018

IEC TR 62368-2 1st

Audio/video, information and communication

technology equipment - Part 2: Explanatory

information related to IEC 62368-1

Published 2015

IEC TR 62368-2 2nd

Audio/video, information and communication

technology equipment - Part 2: Explanatory

information related to IEC 62368-1

Draft 2018

IEC 62368-3 1st

Audio/video, information and communication

technology equipment - Safety - Part 3: DC power

transfer through communication cables and ports

Draft 2017

IEC 62949 1st

Particular safety requirements for equipment to be

connected to information and communication

networks

FDIS - ready to publish 2017

IEC 62911 1stAudio, video and information technology equipment -

Routine electrical safety testing in productionPublished 2016

IEC 60990 3rdMethods of measurement of touch current and

protective conductor currentPublished 2016

Global Adoption of IEC62368-1 2nd Edition (as of June, 2015)

Proposal for revised technical requirement for Clause 6.4.8 Fire Enclosures and Barriers of IEC 62368-1.

ASSESSING SIDE OPENINGS AS BOTTOM OPENINGS PER IEC62368

Illustration 1 (Side View) - With a PIS at the edge ofthe component zone, the bottom portion of theflame cone extends through the side vents

Illustration 2 (Rear View) - With a PIS at the edgeof the component zone, the bottom portion of theflame cone extends through the side vents

Complies with

IEC60950 5 degree rule

ASSESSING SIDE OPENINGS AS TOP OPENINGS PER IEC62368

Illustration 3 (Side View) - With a PIS at the

edge of the component zone, the topportion of the flame cone (cone straightwith no airflow considerations) extendsthrough the side vents

Ilustration 4 – Rear View - With a PIS at the edge of the component zone,

the top portion of the flame cone (cone straight with no airflow

considerations) extends through the side vents

Illustration 5 – Side/Rear View - With a PIS at the edge of the component zone, the top portion of the flame cone (45 degree angle with airflow considerations) extends through the side vents considerably more

Proposal for revised technical requirement for Clause 6.4.8 Fire Enclosures and Barriers of IEC 62368-1.

• IMPACT: Manufacturers and industry are faced with:

– Retooling chassis’ s of existing products to meet IEC62368 fire enclosure requirements to reduce size of side ventilation openings;

– Increase fan speeds to generate more air volume to hopefully generate enough cooling with regards to more restrictive ventilation opening sizes

– The need for faster fan speeds will increase product power and acoustic noise (increase in power will pose additional challenges with regards to energy efficiency and cooling standards)

– At the data center infrastructure level industry consortiums already are raising significant challenge concerns for cooling, power delivery, acoustics and energy consumption, server farm upgrades, etc.

• Proposed Changes:

– 5 Degree Rules – Adding back

• The IEC60950 5 degree rule for side opening (IEC 60950-1, Figure 4E) is a proven safeguard that maintains the integrity of the fire enclosure. This construction has been used in IT equipment for many years and has been shown to be effective. It is also used in other product safety standards including IEC 60601 for medical devices.

– 45 Degree Airflow Considerations - Remove from IEC62368-1 3rd ed.

• The current 6.4.7.2/Fig. 39 air flow requirements were added to 62368-1 to address the theoretical influence of airflow on the application of separation requirements (fire cone). However, in their present form these requirements have more of a theoretical basis than they allow for practical application. (TR 62368-2 (4.7.2/Fig 30) provides theoretical rationale only, but no Source of the requirements, nor reference to actual research.)2368-1

“It’s more than a gap analysis”

• Product life span till the end of 2018?

• Product type: Class III? Class I/II?

• Power consumption?

Product Type & Road Map

• Identify affected safety critical component, material, Power Supplies…

• Readiness of suppliers?

Supply Chain Management

• Qualifications of new vendors?

• Implement new testing procedures, design rules…

Procedures, Design Guideline

• Preparing the new testing gadgets, equipment.

• Calibrations…

New Testing Equipment

• Technical trainings to Compliance, R&D, PMs Team

Learning Curve

How to manage the impact and a better transition?

Appendix

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Accreditations and Recognitions

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Accreditations and Recognitions

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CSA Group Marks

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Customers

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