Standardization of power electronic systems and equipment IEC

Standardization of power electronic systems and equipment IEC 61204 -7 Low-voltage switch mode power supplies – Part 7: Safety requirements Update November 2017 Clemens Klemm Siemens AG European Power Supplies Manufacturers’ Association www. epsma. org

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

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

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

Standards hierarchy related to IEC 62477 -1 std. IEC TC 65 IEC 61010 -2 -201 Measurement, Control and Laboratory Equipment IEC TC 66 IEC 61010 -1 Measurement, Control and Laboratory Equipment IEC SC 62 A IEC 60601 -1 Medical Electrical Equipment fe Re IEC TC 44 IEC 60204 -1 Electrical equipment of machines IEC TC 108 IEC 62368 -1 Audio/Video and ITE IEC SC 22 E IEC 62909 -1/2 Grid Connected Power Converter es nc re IEC SC 22 E IEC 61204 -7 Switched-Mode Power Supplies IEC TC 69 IEC 61851 -3 -1 Electric Vehicle Power Converter IEC SC 22 H IEC 62040 -1 Uninterruptible Power Supplies IEC SC 22 G IEC 61800 -5 -1 Adjustable EP Speed Drive Systeme IEC TC 82 IEC 62109 -1 Photovoltaik Power Converter IEC TC 88 IEC 61400 -7 Wind Power Converter es Us IEC TC 22 IEC 62477 -1 Group Safety Publication 5 The “Users” discuss the further development of the standard.

IEC 62477 -1 (group safety standard) • IEC 62477 -1: 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.

IEC 62477 -1 platform for power electronics Applications aligning with IEC 62477 -1: • IEC 61204 -7: Low-voltage switch mode power supplies – Part 7: Safety requirements • IEC 61800 -5 -1: Adjustable speed electrical power drive systems - Part 5 -1: Safety requirements - Electrical, thermal and energy. • IEC 62040 -1: Uninterruptible power systems (UPS) - Part 1: General and Safety requirements. • IEC 62040 -5 -1: Uninterruptible power systems (UPS) - Part 5 -1: DC output UPS - Safety requirements

IEC 62477 -1 platform for other industries (1) TC 82 Solar photovoltaic energy systems: • IEC 62109 -1: Safety of power converters for use in photovoltaic power systems – part 1: general requirements. • IEC 62109 -2: Safety of power converters for use in photovoltaic power systems - part 2: Particular requirements for inverters. TC 88 Wind turbines: • IEC 61400 -1: Wind turbines - Part 1: Design requirements. • IEC 61400 -2: Wind turbines - Part 2: Design requirements for small wind turbines.

IEC 62477 -1 platform for other industries (2) TC 105 Fuel cell technologies: • IEC 62282 -2: Fuel cell technologies - Part 2: Fuel cell modules • IEC 62282 -3 -1: Fuel cell technologies - Part 3 -1: Stationary fuel cell power systems – Safety • IEC 62282 -5 -1: Fuel cell technologies - Part 5 -1: Portable fuel cell power systems – Safety • IEC 62282 -6 -1: Micro fuel cell power systems – part 6 -1 - Safety

IEC 61204 -7 and references • References exist in the following standards: • IEC 60204 -1 Chapter 9. 1. 1 Control circuit supply „As an alternative, low voltage power supplies with an DC output up to 60 Vdc in accordance with IEC 61204 -7 may be used. ” • IEC 62368 -1: Chapter G 5. 3. 1 „IEC 61204 -7 for a transformer used in a low-voltage power supply; ” • References are planned in next revision in: • IEC 61010 -series (Measurement and Control) • IEC 60601 -1 (Medical products) • Further references are supposable

IEC 61204 -7 and IEC 62477 -1 (group safty standard) in the IEC • Harmonization in Europe EN 61204 -7 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 61204 -7 and group safety publication IEC 62477 -1. • Acceptance in US/CAN Mainly depending of the US/CAN acceptance of group safety standard IEC 62477 -1 which is in progress. Technical demands from US will be considered in 2 nd version of IEC 61477 -1 which is actually in Draft status.

A new IEC product: Extended version - easy to use

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

New IEC product – Extended Version One document shows the full text. Red text is from IEC 61204 -7, 2 nd edition Black text is from IEC 62477 -1

Outlook: IEC 62477 -2 Group Safety Function Ø SAFETY REQUIREMENTS FOR POWER ELECTRONIC CONVERSION SYSTEMS AND EQUIPMENT Part 2: Power Electronic Converters from 1000 V AC or 1500 V DC up to 36 k. V AC or 54 k. V DC … creates an extension of the IEC 62477 -1 to higher voltages (“High Voltage”) … has the same group safety function as IEC 62477 -1 for applications without an own product standard Ø Publication planned for 2018

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