17.220.01 电学、磁学综合 标准查询与下载

DIN 1324-1:2017 电磁埸.第1部分:状态量值

Electromagnetic field - Part 1: State quantities

DIN IEC/TR 60865-2:2017 短路电流.效应计算.第2部分:计算举例(IEC/TR 60865-2-2015)

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

DIN EN 60909-0:2016 三相交流系统的短路电流.第0部分:电流计算(IEC 60909-0-2016).德文版本EN 60909-0-2016

Short-circuit currents in three-phase a.c. systems - Part 0: Calculation of currents (IEC 60909-0:2016); German version EN 60909-0:2016

EN 60909-0:2016 三相交流系统短路电流.第0部分:电流计算

Short-circuit currents in three-phase a.c. systems - Part 0: Calculation of currents

ASTM D7278-16 用于预测分析仪采样系统滞后时间的标准指南

5.1 The analyzer sample system lag time estimated by this guide can be used in conjunction with the analyzer output to aid in optimizing control of blender facilities or process units. 5.2 The lag time can be used in the tuning of control programs to set the proper optimization frequency. 5.3 The application of this guide is not for the design of a sample system but to help understand the design and to estimate the performance of existing sample systems. Additional detailed information can be found in the references provided in the section entitled Additional Reading Material. 1.1 This guide covers the application of routine calculations to estimate sample system lag time, in seconds, for gas, liquid, and mixed phase systems. 1.2 This guide considers the sources of lag time from the process sample tap, tap conditioning, sample transport, pre-analysis conditioning and analysis. 1.3 Lag times are estimated based on a prediction of flow characteristics, turbulent, non turbulent, or laminar, and the corresponding purge requirements. 1.4 Mixed phase systems prevent reliable representative sampling so system lag times should not be used to predict sample representation of the stream. 1.5 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this 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 and health practices and determine the applicability of regulatory limitations prior to use.

Standard Guide for Prediction of Analyzer Sample System Lag Times

GSO IEC 60865-1:2015 短路电流影响的计算 第1部分：定义和计算方法

This part of IEC 60865 is applicable to the mechanical and thermal effects of short-circuit currents. It contains procedures for the calculation of – the electromagnetic effect on rigid conductors and flexible conductors, – the thermal effect on bare conductors. For cables and insulated conductors, reference is made, for example, to IEC 60949 and IEC 60986. For the electromagnetic and thermal effects in d.c. auxiliary installations of power plants and substations reference is made to IEC 61660-2. Only a.c. systems are dealt with in this standard. The following points should, in particular, be noted: a) The calculation of short-circuit currents should be based on IEC 60909. For the determination of the greatest possible short-circuit current, additional information from other IEC standards may be referred to, e.g. details about the underlying circuitry of the calculation or details about current-limiting devices, if this leads to a reduction of the mechanical stress. b) Short-circuit duration used in this standard depends on the protection concept and should be considered in that sense. c) These standardized procedures are adjusted to practical requirements and contain simplifications which are conservative. Testing or more detailed methods of calculation or both may be used. d) In Clause 5 of this standard, for arrangements with rigid conductors, only the stresses caused by short-circuit currents are calculated. Furthermore, other stresses can exist, e.g. caused by dead-load, wind, ice, operating forces or earthquakes. The combination of these loads with the short-circuit loading should be part of an agreement and/or be given by standards, e.g. erection-codes. The tensile forces in arrangements with flexible conductors include the effects of deadload. With respect to the combination of other loads the considerations given above are valid. e) The calculated loads are design loads and should be used as exceptional loads without any additional partial safety factor according to installation codes of, for example, IEC 61936-1 [1]1.

Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods

GSO IEC 60050-141:2015 国际电工词汇 第141部分：多相系统和电路

This part of IEC 60050 gives the general terminology used in polyphase circuits and systems. This terminology is consistent with the terminology developed in the other specialized parts of the IEV.

International Electrotechnical Vocabulary - Part 141: Polyphase systems and circuits

GOST R 56475-2015 空间系统. 液体推进剂发动机部件和组件厚镍镀层厚度的无损检测. 通用要求

Space systems. Non-destructive testing of the thickness of thick nickel platings of parts and assemblies of liquid-propellant engines. General requirements

GOST R 56473-2015 空间系统. 电镀镍和两层镍铬镀层厚度的无损检测. 通用要求

Space systems. Non-destructive testing of thickness of galvanic nickel and two-layer nickel-chrome coatings. General requirements

KS C IEC 61660-2-2014(2019) 发电厂和变电站直流辅助装置的短路电流第2部分:影响的计算

Short-circuit currents in d.c. auxiliary installations in power plants and substations ― Part 2: Calculation of effects

KS C IEC 61660-1-2014(2019) 发电厂和变电站直流辅助设备中的短路电流 - 第1部分:短路电流的计算

Short-circuit currents in d.c. auxiliary installations in power plants and substations — Part 1: Calculation of short-circuit currents

KS C IEC 61660-1:2014 发电厂和变电站直流辅助装置的短路电流 第1部分：短路电流的计算

Short-circuit currents in d.c. auxiliary installations in power plants and substations — Part 1: Calculation of short-circuit currents

KS C IEC 61660-2:2014 发电厂和变电站直流辅助装置中的短路电流 第2部分：影响计算

Short-circuit currents in d.c. auxiliary installations in power plants and substations ― Part 2: Calculation of effects

VDI/VDE/DGQ/DKD 2622 Blatt 5-2014 电量测量设备的校准 函数发生器

The standard defines calibration methods for analog and digital function generators in the range up to 100 MHz. It describes the necessary minimum calibration steps, as well as the procedures of the calibration. The documentation of the measurement results and the content of the calibration certificat is defined. The Annex presents the determination of the uncertainty of measurement with the help of an example.

Calibration of measuring equipment for electrical quantities - Function generators

GSO IEC/TR 60909-2:2014 三相交流系统中的短路电流 第2部分：用于短路电流计算的电气设备数据

IEC 60909-2:2008(E) comprises data of electrical equipment collected from different countries to be used when necessary for the calculation of short-circuit currents in accordance with IEC 60909-0. It may be applied for calculating short-circuit currents in low-voltage networks if they are in accordance with typical equipment employed in the user's country. The collected data and their evaluation may be used for medium- or high-voltage planning purposes and also for comparison with data given by manufacturers or electricity suppliers. For overhead lines and cables the electrical data may in some cases also be calculated from the physical dimensions and the material following the equations given in this report. This second edition cancels and replaces the first edition published in 1992 and constitutes a technical revision. The significant technical changes with respect to the previous edition are as follows: - Subclause 2.5 gives equations and examples for the calculation of the positive-, the negative- and the zero-sequence impedances and reduction factors for high-, medium and low-voltage cables with sheaths and shields earthed at both ends. - Subclause 2.7 gives equations and figures for the calculation of the positive-sequence impedances of busbar configurations.

Short-circuit currents in three-phase a.c. systems - Part 2: Data of electrical equipment for short-circuit current calculations

DIN EN 60909-3 Berichtigung 1:2014 三相交流系统中的短路电流. 第3部分:两个独立的同时线路接地短路, 部分短路电流流入大地情况下的电流 (IEC 60909-3-2009); 德文版本EN 60909-3-2010, DIN EN 60909-3 (VDE 0102-3)-2010-08的勘误表; (IEC-Cor. -2013 to IEC 60909-3-2009)

Short-circuit currents in three-phase a.c. systems - Part 3: Currents during two separate simultaneous line-to-earth short-circuits and partial short-circuit currents flowing through earth (IEC 60909-3:2009); German version EN 60909-3:2010, Corrigendum to

GOST R 56097-2014 航天系统. 无损试验. Ni, NiCr镀层的磁有质动力试验方法"

Space systems. Non-destructive testing. Magnetic ponderomotive testing method of Ni, NiCr platings

ASTM D5568-14 利用波导在微波频率下测量固体材料相对复电容率和相对磁导率的标准试验方法

5.1 Design calculations for radio frequency (RF), microwave, and millimetre-wave components require the knowledge of values of complex permittivity and permeability at operating frequencies. This test method is useful for evaluating small experimental batch or continuous production materials used in electromagnetic applications. Use this method to determine complex permittivity only (in non-magnetic materials), or both complex permittivity and permeability simultaneously. 1.1 This test method covers a procedure for determining relative complex permittivity (relative dielectric constant and loss) and relative magnetic permeability of isotropic, reciprocal (non-gyromagnetic) solid materials. If the material is nonmagnetic, it is acceptable to use this procedure to measure permittivity only. 1.2 This measurement method is valid over a frequency range of approximately 100 MHz to over 40 GHz. These limits are not exact and depend on the size of the specimen, the size of rectangular waveguide transmission line used as a specimen holder, and on the applicable frequency range of the network analyzer used to make measurements. The size of specimen dimension is limited by test frequency, intrinsic specimen electromagnetism properties, and the request of algorithm. Being a non-resonant method, the selection of any number of discrete measurement frequencies in a measurement band would be suitable. Use of multiple rectangular waveguide transmission line sizes are required to cover this entire frequency range (100 MHz to 40 GHz). This test method can also be generally applied to circular waveguide test fixtures. The rectangular waveguide fixture is preferred over coaxial fixtures when samples have in-plane anisotropy or are difficult to manufacture precisely. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are in inch-pound units and are included for information only. The equations shown here assume an e+jωt harmonic time convention. 1.4 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 and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Measuring Relative Complex Permittivity and Relative Magnetic Permeability of Solid Materials at Microwave Frequencies Using Waveguide

GSO IEC/TR 62482:2013 船舶电气装置 电磁兼容性（EMC） 船舶最佳电缆装置 引导距离测试方法

This Technical Report describes tests methods carried out to determine minimum routing distances in order to avoid crosstalk of fast transients (bursts). The test results may be applied to cable installations according to IEC 60092-352.

Electrical installations in ships - Electromagnetic compatibility - Optimising of cable installations on ships - Testing method of routing distance

IEC 60909-3:2009/COR1:2013 三相交流系统中短路电流.第3部分:两个独立的同时单线路对地短路和部分短路电流流入大地情况下的电流.勘误表1

Short-circuit currents in three phase AC systems - Part 3: Currents during two separate simultaneous line-to-earth short circuits and partial short-circuit currents flowing through earth; Corrigendum 1