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Background - IEC 60335-2-114Particular requirements for self-balancing personal transport devices for use with batteries containing alkaline or other non-acid electrolytes
61(Shanghai/TC125 Liaison)63
October 2019
Background
In Victoria, Australia there were a number of incidents involving “Hoverboards”
Background
Background
Background
On 1 July 2016 the Victorian regulator prohibited hoverboards that did not comply with:
1. AS/NZS 60335.1, Household and similar electrical appliances –Safety - Part 1: General requirements
2. The requirements of Annex B of AS/NZS 60335.1
3. Additional specific requirements
Main issue identified in Australia:
Compatibility issue between batteries
and charging circuits
Issues identified in other countries:
Rapid de-acceleration due to software and
Hardware faults
Background
In November 2016 Australia published AS/NZS 60335.2.201.2016
Particular requirements for battery powered self-balancing personal transport devices
This standard replaced the Victorian prohibition
Australia put a proposal to TC61 to adopt a new part two internationally
IEC 60335-2-114 was published in 2018
Why 60335?
Versatile standard written in such a way that it is easily adapted for different products• Toasters, washing machines, robotic vacuum cleaners, commercial
refrigeration, amusement & vending machines, etc.
• Only have to define normal operation
• Can add or exclude specific requirements
• Next edition will have updated requirements for batteries
Why 60335?
Has proven requirements for: • Batteries (annex B)
• Electronics and faults in electronics causing mechanical hazards such as rapid de-acceleration and safety related software faults such as stuck-at faults and direct coupled faults
• Flammability, vibration and IP requirements
• Can cover hazards whiled charging the battery and during use when discharging.
• Covers requirements for the functional part as well as the battery charger or the power supply part
Questions
Doesn’t IEC 60336 only cover household products?
• IEC 60335 also covers similar equipment such as those for commercial use, the equipment doesn’t need to be specifically used in the household.
What does IEC 60335-2-114 not cover?
• operational safety/performance such as speed restriction, falling hazards, rapid acceleration
What does IEC 60335-2-114 cover?
• Safety requirements for electrical safety(All safety aspects that are caused by electricity)
Questions
Why does IEC 60335-2-114 only cover requirements for self balancing units?
• This is where the risk was at the time, the scope could be easily increased to cover other products
• The scope could also be increased to specifically cover public use products
• Normal operation could be defined for different types of products • Self balancing types
• e-scooters, etc. • Skate boards
Points of clarification
• Irrespective of what is stated in the Page 2 of the TC 125 NP under “relevant documents to be considered” IEC 60335-2-114 is an international standard. It is not a national or regional standard.
• IEC 60335-2-114 currently covers household devices that can be used in public spaces and covers all of the safety requirements affected by electricity.
• The safety requirements in IEC 60335-2-114 are not dependent on where the devices are used
• IEC 60335-2-114 does not currently cover safety requirements affected by electricity for communal use devices but with very little change it could.
Recommendations
• TC125 should refer to IEC 60335-2-114 for all safety requirements affected by electricity
• Review IEC 60335-2-114 and recommend any changes, such as;• Clarifying the scope to make it more clear that the standard covers
devices used by householders outside the home
• Adding additional normal operation for other devices such as skateboards and scooters
• Change name to “Personal e-Transporters (PeTs)”
• TC125 to write a standard covering the following criteria;• functional safety and performance,
• mechanical safety
• reliability
Thank you
ANY QUESTIONS?
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