GB/T 40661-2021 工頻磁場測量儀校準規(guī)范

本文件規(guī)定了工頻磁場測量儀的一般要求、校準參數(shù)要求、校準條件、校準項目和校準方法.校準結(jié)果、校準間隔等要求。 本文件適用于新制造,使用中和修理后的測量額定頻率為50 Hz 的工頻磁感應強度的磺場測量儀的校準。 注:測量工頻電場強度的工頻電場測量儀的校準方法見附錄A。

Calibration specification of measurement instrument for power frequency magnetic field

GB/T 30109-2013 交流損耗測量 液氦溫度下橫向交變磁場中圓形截面超導線總交流損耗的探測線圈測量法

本標準規(guī)定了利用探測線圈法測量橫向交變磁場中復合超導線總交流損耗的方法。損耗可能包括磁滯損耗、耦合損耗和渦流損耗。IEC 61788-13已描述了只測量直流磁場或者低掃速率磁場中磁滯損耗的標準方法[2]。本標準適用于脈沖線圈和交流線圈中的金屬和氧化物圓形截面超導線,在隨時間變化(時變)的磁場和/或電流的應用中會產(chǎn)生交流損耗。在常規(guī)線圈應用的電磁位形中,交流損耗主要來自(時變)磁場。對于處于橫向交變磁場中的超導線,本方法通常用在液氦溫度、頻率范圍上限可達工頻50/60 Hz的總交流損耗測量。采納本方法測量的總交流損耗分為超導單絲中的磁滯損耗、絲間的耦合損耗和常導部分的渦流損耗。在超導線外沒有厚度較大的正常導體包套的情況下,交流損耗主要是磁滯損耗和耦合損耗;由于每周耦合損耗與頻率成正比,磁滯損耗部分可以通過在較低頻率范圍內(nèi)所測得的交流損耗外推至頻率為零時的損耗估算得到。

AC loss measurements.Total AC loss measurement of round superconducting wires exposed to a transverse alternating magnetic field at liquid helium temperature by a pickup coil method

DB43/T 2955-2024 等值反磁通瞬變電磁法探測技術規(guī)范

Technical specification for detection by equivalent reverse flux transient electromagnetic method

YD/T 4183-2023 射頻電磁場暴露數(shù)據(jù)采集方法和地圖繪制要求

本文件給出了一種用于生成射頻電磁場（RF-EMF）輻射地圖的方法，包括輻射數(shù)據(jù)采集系統(tǒng)和地圖繪制的技術要求，用以評估某些區(qū)域或向人們形象展示該區(qū)域射頻電磁場的輻射暴露水平。 本文件適用于移動通信基站、廣播電視發(fā)射臺等無線電發(fā)射設備/設施所產(chǎn)生的射頻電磁場（30MHz-300GHz）暴露數(shù)據(jù)的采集和輻射地圖的繪制。

Data Collection Methods and Mapping Requirements for Exposure to Radio Frequency Electromagnetic Fields

DB43/T 2431-2022 離心機電磁兼容試驗方法

Electromagnetic Compatibility Test Method for Centrifuge

DB43/T 2151-2021 等值反磁通瞬變電磁法探測系統(tǒng)通用技術條件

General technical requirements for equivalent anti-flux transient electromagnetic detection system

BS EN IEC 61788-17:2021 超導 電子特性測量 大面積超導薄膜局部臨界電流密度及其分布

Superconductivity. Electronic characteristic measurements. Local critical current density and its distribution in large-area superconducting films

ASTM A927/A927M-18 用伏特計-安培計-瓦特計法測量環(huán)形磁芯試樣的交流磁性能的標準試驗方法

3.1 This test method is a derivative of Test Method A697/A697M specifically designed for testing of toroidal cores which are not covered in Test Method A697/A697M and for testing at magnetic flux densities above the knee of the magnetization curve. 3.2 Specimen size typically ranges from 1 to 1.25 in. [25.4 to 31.8 mm] in inside diameter to 1.5 in. [38.1 mm] in outside diameter with weights ranging from 30 to 60 g. Provided the test equipment is suitably chosen, there is no obvious limit to the overall size of core that can be tested. If basic material properties are desired, then the requirements of 5.1 must be observed. 3.3 The reproducibility and repeatability of this test method are such that this test method is suitable for design, specification acceptance, service evaluation, and research and development. 3.4 When testing under sinusoidal flux conditions at magnetic flux densities approaching saturation, highly peaked magnetizing waveforms will be present, and the test instruments used must have crest factor capabilities of at least 3; otherwise erroneous results will be obtained. 1.1 This test method covers the determination of several ac magnetic properties of either laminated ring or toroidal tape wound cores made from flat rolled product. 1.2 This test method covers test equipment and procedures for determination of specific core loss, specific exciting power, and peak permeability for power and audio frequencies (50 to 208201;000 Hz) under sinusoidal flux conditions. 1.3 This test method, because of the use of a feedback-controlled power amplifier, is well suited for determination of ac magnetic properties at magnetic flux densities above the knee of the magnetization curve and is particularly useful for testing of high-saturation iron-cobalt alloys (for example, alloys listed in Specification A801), although use of this test method is not restricted to a particular type of material. 1.4 This test method shall be used in conjunction with Practice A34/A34M and Terminology A340. 1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7

Standard Test Method for Alternating-Current Magnetic Properties of Toroidal Core Specimens Using the Voltmeter-Ammeter-Wattmeter Method

BS 7856:2017 英國使用的有功電能交流電度表的特殊設計和其他功能規(guī)范（精度等級 A 和 B）

Specification for special design and other features of alternating current watthour meters for active energy for use in the UK (Accuracy Classes A and B)

DIN IEC/TR 60865-2:2017 短路電流.效應計算.第2部分:計算舉例(IEC/TR 60865-2-2015)

Short-circuit currents - Calculation of effects - Part 2: Examples of calculation (IEC/TR 60865-2:2015)

ITU-T K.87-2016 電磁安全要求應用的指南. 綜述

Guide for the application of electromagnetic security requirements ?C Overview (Study Group 5)

JJG 1122-2015 機動車地感線圈測速系統(tǒng)

本規(guī)程適用于固定安裝在道路上，通過一組地感線圈對機動車行駛速度進行測量的機動車地感線圈測速系統(tǒng)（以下簡稱地感線圈測速系統(tǒng)）測速計量性能的首次檢定、后續(xù)檢定和使用中檢查。

Traffic Loop-based Speed Meters

EN 10330:2015 磁性材料.開放式磁路中磁性材料矯頑力的測量方法

This European Standard specifies the method of measurement of the coercivity of magnetic materials in an open magnetic circuit. It applies to magnetic materials having a coercivity up to 500 kA/m. Special precautions to take in measuring coercivities below 40 A/m and above 160 kA/m are given in Annex A.

Magnetic materials - Method of measurement of the coercivity of magnetic materials in an open magnetic circuit

EN 10251:2015 磁性材料.電工鋼板和鋼帶的幾何特性的測定方法

This European Standard is intended to define the test methods used for the determination of the following geometrical characteristics of electrical steel sheet and strip: - flatness; - residual curvature; - edge camber; - deviation from the shearing line due to internal stresses; - burr height of cut edges. This European Standard applies to electrical steel sheet and strip intended for the construction of magnetic circuits and corresponding to Clauses B2, C21 and C22 of IEC 60404-1:2000.

Magnetic materials - Methods of determination of the geometrical characteristics of electrical steel sheet and strip

KS A 0085-2015 同色異譜的不同觀測者目視評估結(jié)果的鑒定方法

Evaluation method for degree of metamerism for change in observers

BS IEC 62055-41:2014 電量測量. 支付系統(tǒng). 標準傳輸規(guī)格 (STS). 單程令牌載波系統(tǒng)的應用層協(xié)議

Electricity metering. Payment systems. Standard transfer specification (STS). Application layer protocol for one-way token carrier systems

DIN EN 61786-1:2014 關于人類接觸的1 Hz至100 kHz的直流磁場, 交流磁場以及交流電領域的測量. 第1部分: 測量儀器的要求 (IEC 61786-1-2013); 德文版本EN 61786-1-2014

Measurement of DC magnetic, AC magnetic and AC electric fields from 1 Hz to 100 kHz with regard to exposure of human beings - Part 1: Requirements for measuring instruments (IEC 61786-1:2013); German version EN 61786-1:2014

IEEE Std C37.26-2014 低壓(1000 V AC或更低)電感試驗電路功率因數(shù)的測量方法指南

Guide for Methods of Power-Factor Measurement for Low-Voltage (1000 V AC or lower) Inductive Test Circuits

DIN EN 50413/A1:2014 有關人體暴露于電場, 磁場和電磁場的測量和計算程序的基本標準(0 Hz至300 GHz); 德文版本EN 50413-2008/A1-2013

Basic standard on measurement and calculation procedures for human exposure to electric, magnetic and electromagnetic fields (0 Hz - 300 GHz); German version EN 50413:2008/A1:2013

BS EN 61786-1:2014 關于人類接觸的1 Hz至100 kHz的直流磁場, 交流磁場以及交流電領域的測量. 測量儀器的要求

Measurement of DC magnetic, AC magnetic and AC electric fields from 1 Hz to 100 kHz with regard to exposure of human beings. Requirements for measuring instruments