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?