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Ultrasonics. Transducers. Definitions and measurement methods regarding focusing for the transmitted fields. Original standard BS EN IEC 61828-2021 in PDF full version. Additional info + preview on request

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Surface mounted piezoelectric devices for frequency control and selection. Standard outlines and terminal lead connections - Ceramic enclosures. Original standard BS EN IEC 61837-2-2018 + A1-2020 in PDF full version. Additional info + preview on request

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Ultrasonics. Therapeutic focused short pressure pulse sources. Characteristics of fields. Original standard BS EN IEC 61846-2025 in PDF full version. Additional info + preview on request

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Ultrasonics. Surgical systems. Measurement and declaration of the basic output characteristics. Original standard BS EN IEC 61847-2025 in PDF full version. Additional info + preview on request

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Communication networks and systems for power utility automation - Configuration description language for communication in in power utility automation systems related to IEDs. Original standard BS EN IEC 61850-6-2009 + A2-2025 in PDF full version. Additional info + preview on request

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Communication networks and systems for power utility automation - Basic communication structure. Distributed energy resources and distribution automation logical nodes. Original standard BS EN IEC 61850-7-420-2021 in PDF full version. Additional info + preview on request

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