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IEEE C62.55-2020 pdf download

IEEE C62.55-2020 pdf free download.The title is IEEE Guide for Surge Protection of DC Power Feeds to Remote Radio Heads. The waveform of currents likely to exist on dc feeds to equipment located at the tops of...

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IEEE C37.20.2a-2020 pdf download

IEEE C37.20.2a-2020 pdf free download.IEEE Standard for Metal-Clad Switchgear--Amendment 1: Control and Secondary Circuits and Devices, and All Wiring. Control, secondary, and logic-level wiring used in the equipment and covered by the IEEE 37.20 series of documents...

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ISO 20205:2015 pdf download

ISO 20205:2015 pdf free download.Space data and information transfer systems — Spacecraft Onboard Interface Systems — Low Data-Rate Wireless Communications for Spacecraft Monitoring and Control. IINTRODUCTION 1.1 PURPOSE This document presents the recommended practices for the utilization...

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ISO 20202:2004 pdf download

ISO 20202:2004 pdf free download.Carbonaceous materials used in the production of aluminium — Cold and tepid ramming pastes — Preparation of baked test pieces and determination of loss on baking. ISO 20202:2004 describes a method of baking...

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IEEE 802.3cq-2020 pdf download

IEEE 802.3cq-2020 pdf free download.IEEE Standard for Ethernet Amendment 6: Maintenance #13: Power over Ethernet over 2 pairs. IEEE Std 802.3TM was first published in 1985. Since the initial publication, many projects have added functionality or provided...

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IEEE 308-2020 pdf download

IEEE 308-2020 pdf free download. IEEE Standard Criteria for Class 1E Power Systems for Nuclear Power Generating Stations. IEEE 308-2020 applies to the Class 1E portions of the following systems and equipment in single-unit and multiunit nuclear...

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ASTM A1018/A1018M-16 pdf download

ASTM A1018/A1018M-16 pdf free download.Standard Specification for Steel, Sheet and Strip, Heavy-Thickness Coils, Hot-Rolled, Carbon, Commercial, Drawing, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength. PS:ASTM A1018/A1018M-16 is replaced by ASTM A1018/A1018M-18. ASTM A1018/A1018M-16...

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ASTM A572/A572M-18 pdf download

ASTM A572/A572M-18 pdf free download.Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel.The size of this file is 0.99M. ASTM A572/A572M-18 covers five grades of high-strength low-alloy structural steel shapes, plates, sheet piling, and bars. Grades 42 ,...

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ASTM B117-03 pdf download

ASTM B117-03 pdf free download.Standard Practice for Operating Salt Spray (Fog) Apparatus. ASTM B117-03 covers the apparatus, procedure, and conditions required to create and maintain the salt spray (fog) test environment. Suitable apparatus which may be used...

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IEEE 802.15.4X-2019 pdf download

IEEE 802.15.4X-2019 pdf free download.IEEE Standard for Low-Rate Wireless Networks - Amendment 7: Defining Enhancements to the Smart Utility Network (SUN) Physical Layers (PHYs) Supporting up to 2.4 Mb/s Data Rates. IEEE 802.15.4X-2019 defines the physical layer...

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