1. Standardization of power electronic systems and equipment
IEC
Low-voltage switch mode power supplies – Part 7: Safety requirements
Update November 2017
Clemens Klemm
Siemens AG
European Power Supplies Manufacturers’ Association

2. Classical industries and power conversion
Drive trains for mobility
Factory automation
Converter
= 
UPS and power distribution
Power supply

3. New industries and power conversion
Photovoltaik
Wind power
Energy storage
Converter
charging/discharging
= 
Tidal wave
Electric drive train

4. Same challenges for classic and new industries
The applications are very different, but often the technology is almost similar!
The safety standards should be aligned as much as possible!
Standards on interconnection and performance are necessary!
Standards should be easy to use

5. Switched-Mode Power Supplies Group Safety Publication
Standards hierarchy related to IEC std.
IEC TC 108
IEC
Audio/Video and ITE
IEC TC 66
IEC Measurement, Control and Laboratory Equipment
IEC TC 44
IEC
Electrical equipment of machines
IEC TC 65
IEC Measurement, Control and Laboratory Equipment
IEC SC 62A
IEC
Medical Electrical Equipment
References
IEC SC 22E
IEC
Switched-Mode Power Supplies
IEC SC 22H
IEC
Uninterruptible Power Supplies
IEC TC 69
IEC
Electric Vehicle Power Converter
IEC SC 22E
IEC /2
Grid Connected Power Converter
IEC SC 22G
IEC
Adjustable EP Speed Drive Systeme
IEC TC 82
IEC
Photovoltaik Power Converter
IEC TC 88
IEC
Wind Power Converter
Uses
IEC TC 22
IEC
Group Safety Publication
The “Users” discuss the further development of the standard.

6. IEC 62477-1 (group safety standard)
IEC : Safety requirements for power electronic converter systems and equipment - Part 1: General
Developed to provide requirement for the whole power electronic industry (e.g. power supplies, UPS, drive systems).
Designed as standard to be used on its own, or to be referenced by other committees.
Status of a ”Group Safety Function” by ACOS (Advisory Committee on Safety within the IEC) in the low voltage area; extract from the scope:
This part of IEC 62477 has the status of a group safety publication in accordance with IEC Guide 104 for power electronic converter systems and equipment for solar, wind, tidal, wave, fuel cell or similar energy sources.

7. IEC 62477-1 platform for power electronics
Applications aligning with IEC :
IEC : Low-voltage switch mode power supplies – Part 7: Safety requirements
IEC : Adjustable speed electrical power drive systems Part 5-1: Safety requirements - Electrical, thermal and energy.
IEC : Uninterruptible power systems (UPS) Part 1: General and Safety requirements.
IEC : Uninterruptible power systems (UPS) - Part 5-1: DC output UPS - Safety requirements

8. IEC 62477-1 platform for other industries (1)
TC82 Solar photovoltaic energy systems:
IEC : Safety of power converters for use in photovoltaic power systems – part 1: general requirements.
IEC : Safety of power converters for use in photovoltaic power systems part 2: Particular requirements for inverters.
TC88 Wind turbines:
IEC : Wind turbines - Part 1: Design requirements.
IEC : Wind turbines - Part 2: Design requirements for small wind turbines.

9. IEC 62477-1 platform for other industries (2)
TC105 Fuel cell technologies:
IEC : Fuel cell technologies - Part 2: Fuel cell modules
IEC : Fuel cell technologies - Part 3-1: Stationary fuel cell power systems – Safety
IEC : Fuel cell technologies - Part 5-1: Portable fuel cell power systems – Safety
IEC : Micro fuel cell power systems – part Safety

10. IEC and references
References exist in the following standards:
IEC Chapter Control circuit supply „As an alternative, low voltage power supplies with an DC output up to 60Vdc in accordance with IEC may be used.”
IEC : Chapter G „IEC for a transformer used in a low-voltage power supply;”
References are planned in next revision in:
IEC series (Measurement and Control)
IEC (Medical products)
Further references are supposable

11. IEC 61204-7 and IEC 62477-1 (group safty standard) in the IEC
Harmonization in Europe EN has been positively assessed by the LVD (Low Voltage Directive) New Approach consultant in September 2017.
Acceptance in China (GB standard) They voted positive on the standard. National Chinese Mirror Comittee (TC 60) will investigate for national acceptance of IEC and group safety publication IEC
Acceptance in US/CAN Mainly depending of the US/CAN acceptance of group safety standard IEC which is in progress. Technical demands from US will be considered in 2nd version of IEC which is actually in Draft status.

12. A new IEC product: Extended version - easy to use

13. The first IEC 62477-1 referencing standard, the IEC 61204-7, 2nd edition
Text of IEC , 2nd
Text of IEC :2012
SMPS

14. New IEC product – Extended Version
One document shows the full text.
Red text is from IEC , 2nd edition
Black text is from IEC

15. Outlook: IEC 62477-2 Group Safety Function
SAFETY REQUIREMENTS FOR POWER ELECTRONIC CONVERSION SYSTEMS AND EQUIPMENT Part 2: Power Electronic Converters from 1000 V AC or V DC up to 36 kV AC or 54 kV DC
… creates an extension of the IEC to higher voltages (“High Voltage”)
… has the same group safety function as IEC for applications without an own product standard
Publication planned for 2018

16. Thank you for listening !
We are looking forward for your input and cooperation.
We are looking forward for support and participation.
Any questions are welcome