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    IEC TR 62001-4:2021

    High-voltage direct current (HVDC) systems - Guidance to the specification and design evaluation of AC filters - Part 4: Equipment

    International Electrotechnical Committee

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    IEC TR 62001-4:2021 RLV

    High-voltage direct current (HVDC) systems - Guidance to the specification and design evaluation of AC filters - Part 4: Equipment

    International Electrotechnical Committee

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    IEC 60050-103:2009/AMD4:2021

    Amendment 4 - International Electrotechnical Vocabulary (IEV) - Part 103: Mathematics - Functions

    International Electrotechnical Committee

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    IEC 60050-801:1994/AMD4:2021

    Amendment 4 - International Electrotechnical Vocabulary (IEV) - Part 801: Acoustics and electroacoustics

    International Electrotechnical Committee

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    IEC 62262:2002/AMD1:2021

    Amendment 1 - Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code)

    International Electrotechnical Committee

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    IEC 60050-705:1995/AMD7:2021

    Amendment 7 - International Electrotechnical Vocabulary (IEV) - Part 705: Radio wave propagation

    International Electrotechnical Committee

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    IEC TS 63102:2021

    Grid code compliance assessment methods for grid connection of wind and PV power plants

    International Electrotechnical Committee

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    IEC 61753-111-07:2021

    Fibre optic interconnecting devices and passive components - Performance standard - Part 111-07: Sealed closures - Category A - Aerial

    International Electrotechnical Committee

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    IEC 60050-723:1997/AMD7:2021

    Amendment 7 - International Electrotechnical Vocabulary (IEV) - Part 723: Broadcasting: Sound, television, data

    International Electrotechnical Committee

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    IEC 60050-715:1996/AMD3:2021

    Amendment 3 - International Electrotechnical Vocabulary (IEV) - Part 715: Telecommunication networks, teletraffic and operation

    International Electrotechnical Committee