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IEC TS 60076-23:2018 - Power transformers - Part 23: DC magnetic bias suppression devices
January 9, 2018 - IEC - International Electrotechnical Commission

IEC TS 60076-23:2018(E) specifies requirements for devices for the suppression of DC magnetic bias of power transformers and convertor transformers. It includes requirements for service conditions, structures, testing, packing, transport and storage. The devices are connected...

IEC 60384-16:2019 - Fixed capacitors for use in electronic equipment - Part 16: Sectional specification - Fixed metallized polypropylene film dielectric DC capacitors
September 16, 2019 - IEC - International Electrotechnical Commission

IEC 60384-16:2019 applies to fixed capacitors with metallized electrodes and poly­propylene dielectric for use in electronic equipment. These capacitors can have "self-healing properties" depending on conditions of use. They are mainly intended for use with direct voltage....

ASTM D5777-18 - Standard Guide for Using the Seismic Refraction Method for Subsurface Investigation
December 15, 2018 - ASTM International

1.1 Purpose and Application-This guide covers the equipment, field procedures, and interpretation methods for the assessment of subsurface conditions using the seismic refraction method. Seismic refraction measurements as described in this guide are applicable in mapping...

ASTM D7128-18 - Standard Guide for Using the Seismic-Reflection Method for Shallow Subsurface Investigation
July 15, 2018 - ASTM International

5.1 Concepts: 5.1.1 This guide summarizes the basic equipment, field procedures, and interpretation methods used for detecting, delineating, or mapping shallow subsurface features and relative changes in layer geometry or stratigraphy using the seismic-reflection method. Common applications...

P1901.1.1/D0.7, Sept 2019 - IEEE Approved Draft Standard Test Procedures for IEEE 1901.1 Standard for Medium Frequency (less than 15 MHz) Power Line Communications for Smart Grid Applications
2020 Edition, June 11, 2020 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This Standard specifies the interoperability and compliance testing for IEEE 1901.1, in which Physical (PHY) and media access control (MAC) layers of the medium frequency band (less than 12 MHz) broadband power line communication technology for smart grid applications(SGPLC)...

P1937.1/D6.0, May 2020 - IEEE Draft Standard Interface Requirements and Performance Characteristics for Payload Devices in Drones
2020 Edition, May 19, 2020 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

IEEE 1937.1 standard presents the general interface requirements and performance characteristics of payload devices in drones. Chapater1 and chapter2 are the overview and normative references of the standard. In chapter 3, there are a few definitions including drones,...

PC62.11/D9.0, Feb 2020 - IEEE Approved Draft Standard for Metal-Oxide Surge Arresters for AC Power Circuits (> 1 kV)
2020 Edition, May 8, 2020 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Metal-oxide surge arresters (MOSAs) designed to repeatedly limit the voltage surges on 48 Hz to 62 Hz power circuits (>1000 V) by passing surge discharge current and automatically limiting the flow of system power current are addressed in this standard. This standard...

ASTM C549-18 - Standard Specification for Perlite Loose Fill Insulation
November 1, 2018 - ASTM International

1.1 This specification covers the composition and physical properties of expanded perlite loose fill insulation. The specification also includes the testing procedures by which the acceptability of the material is determined. These testing procedures deal primarily with...

IEC 60384-11:2019 - Fixed capacitors for use in electronic equipment - Part 11: Sectional specification - Fixed polyethylene-terephthalate film dielectric metal foil DC capacitors
August 22, 2019 - IEC - International Electrotechnical Commission

IEC 60384-11:2019 is applicable to fixed direct current capacitors, for rated voltages not exceeding 6 300 V, using as dielectric a polyethylene-terephthalate film and electrodes of thin metal foils. For capacitors with rated voltages exceeding 1 000 V, additional tests and requirements may...

ASTM D6800-18 - Standard Practice for Preparation of Water Samples Using Reductive Precipitation Preconcentration Technique for ICP-MS Analysis of Trace Metals
July 15, 2018 - ASTM International

1.1 Toxic elements may be present in ambient waters and may enter the food chain via uptake by plants and animals; the actual concentrations of toxic metals are usually sub-ng/mL. The U.S. EPA has published its Water Quality Standards in the U.S. Federal Register 40 CFR...

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