29.040 绝缘流体 标准查询与下载

GB/T 3848-1983 硬质合金矫顽(磁)力测定方法

本标准适用于对含3％以上铁磁物质作粘结剂的硬质合金矫顽（磁）力的测定。

Hardmetals--Determination of(the magnetization) coercivity

GB/T 3074.2-1982 石墨电极弹性模量测定方法

弹性模量是材料在外力作用下，应力与伸长或压缩弹性形变之间关系的量度，其数值为试样横截面所受正应力与应变之比。

Method for determination of the elastic modulus of graphite electrodes

GB/T 3072-1982 石墨电极

本标准适用于以石油焦、沥青焦等原料制成的，供普通功率电弧炉作导电材料的石墨电极。

Graphite electrodes

GB/T 3074.3-1982 石墨电极氧化性测定方法

氧化性是指石墨试样在650℃温度下，每小时每克试样氧化损失的毫克数。

Method for determination of the oxidation resistance of graphite electrodes

GB/T 3073-1982 高功率石墨电极

本标准适用于以体质石油焦为主要原料，经过浸渍而制成的，供高功率是弧炉作导电材料的高功率石墨电极。

High power graphite electrodes

GB/T 3074.1-1982 石墨电极抗折强度测定方法

抗折强度是材料受外力弯曲时所能承受最大负荷的量度，其数值为试样弯曲断裂时，横戴面上正应力的大小。

Method for determination of the flexure strength of graphite electrodes

JB/T 14347.2-2022 工业机械电气设备及系统 数控系统功能测试规范 第2部分：基本功能

Specifications for functional testing of CNC systems for industrial machinery and electrical equipment and systems Part 2: Basic functions

JB/T 14347.3-2022 工业机械电气设备及系统 数控系统功能测试规范 第3部分：扩展功能

Specifications for functional testing of numerical control systems for industrial machinery and electrical equipment and systems Part 3: Extended functions

JB/T 14347.1-2022 工业机械电气设备及系统 数控系统功能测试规范 第1部分：总则

Specifications for functional testing of numerical control systems for industrial machinery, electrical equipment and systems Part 1: General principles

GSO IEC 60156:2021 绝缘液体 工频击穿电压的测定 试验方法

IEC 60156:2018 is now available as IEC 60156:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60156:2018 specifies the method for determining the dielectric breakdown voltage of insulating liquids at power frequency. The test procedure is performed in a specified apparatus, where the oil sample is subjected to an increasing AC electrical field until breakdown occurs. The method applies to all types of insulating liquids of nominal viscosity up to 350 mm2/s at 40 °C. It is appropriate both for acceptance testing on unused liquids at the time of their delivery and for establishing the condition of samples taken in monitoring and maintenance of equipment. This third edition cancels and replaces the second edition published in 1995. This edition constitutes a technical revision and, mainly, confirms the content of the previous edition even if some advances are included. The test method has not been changed for practical reason due to the very large number of instrumentation disseminated around the world, even if the use of stirring is now recommended.

Insulating liquids - Determination of the breakdown voltage at power frequency - Test method

KS C IEC 62770-2020 电工应用流体 用于变压器和类似电气设备的未使用的天然酯

Fluids for electrotechnical applications — Unused natural esters for transformers and similar electrical equipment

KS C IEC 61099-2019 电气用途未使用的合成有机酯规范

Specification for unused synthetic organic esters for electrical purposes

IEC 60156:2018 RLV 绝缘液体.工频击穿电压的测定.试验方法

Insulating liquids - Determination of the breakdown voltage at power frequency - Test method

IEC 60156:2018 绝缘液体.工频击穿电压的测定.试验方法

Insulating liquids - Determination of the breakdown voltage at power frequency - Test method

KS C IEC 60567-2018(2023) 充油电气设备.游离气体和溶解气体分析用气体和油的取样.指南

Oil-filled electrical equipment — Sampling of gases and of oil for analysis of free and dissolved gases — Guidance

KS C IEC 60567:2018 充油电气设备 - 用于气体和溶解气体分析的气体和油的取样 - 指导

Oil-filled electrical equipment — Sampling of gases and of oil for analysis of free and dissolved gases — Guidance

KS C IEC 60567-2018 充油电气设备 - 用于气体和溶解气体分析的气体和油的取样 - 指导

Oil-filled electrical equipment — Sampling of gases and of oil for analysis of free and dissolved gases — Guidance

GSO IEC 62701:2016 电工应用流体 用于变压器和开关设备的再生矿物绝缘油

IEC 62701:2014 specifies requirements for recycled mineral insulating oils intended for use in transformers, switchgear, and similar electrical equipment in which oil is required for insulation and heat transfer. These oils are produced by processes employed offsite. Oils treated and reconditioned on-site are not within the scope of this standard. Oils with and without additives are within the scope of this standard. Such oils will have originally been supplied in compliance with a recognized unused mineral insulating oil specification. This standard does not differentiate between the methods used to recycle mineral insulating oil. This standard does not apply to mineral insulating oils used as impregnates in cables or capacitors.

Fluids for electrotechnical applications - Recycled mineral insulating oils for transformers and switchgear

GSO IEC 60567:2015 充油电器 游离气体和溶解气体的气体采样和分析 说明书

This International Standard deals with the techniques for sampling free gases from gascollecting relays from power transformers. Three methods of sampling free gases are described. The techniques for sampling oil from oil-filled equipment such as power and instrument transformers, reactors, bushings, oil-filled cables and oil-filled tank-type capacitors are no longer covered by this standard, but are instead described in 4.2 of IEC 60475:2011. Before analysing the gases dissolved in oil, they are first extracted from the oil. Three basic methods are described, one using extraction by vacuum (Toepler and partial degassing), another by displacement of the dissolved gases by bubbling the carrier gas through the oil sample (stripping) and the last one by partition of gases between the oil sample and a small volume of the carrier gas (headspace). The gases are analysed quantitatively after extraction by gas chromatography; a method of analysis is described. Free gases from gas-collecting relays are analysed without preliminary treatment. The preferred method for assuring the performance of the gas extraction and analysis equipment, considered together as a single system, is to degas samples of oil prepared in the laboratory and containing known concentrations of gases (“gas-in-oil standards”) and quantitatively analyse the gases extracted. Two methods of preparing gas-in-oil standards are described. For daily calibration checks of the chromatograph, it is convenient to use a standard gas mixture containing a suitable known amount of each of the gas components to be in a similar ratio to the common ratios of the gases extracted from transformer oils. The techniques described take account, on the one hand, of the problems peculiar to analyses associated with acceptance testing in the factory, where gas contents of oil are generally very low and, on the other hand, of the problems imposed by monitoring equipment in the field, where transport of samples may be by un-pressurized air freight and where considerable differences in ambient temperature may exist between the plant and the examining laboratory.

Oil-filled electrical equipment - Sampling of gases and analysis of free and dissolved gases - Guidance

KS C IEC 62770-2015(2020) 用于电工应用的流体 - 变压器和类似电气设备的未使用的天然酯

Fluids for electrotechnical applications — Unused natural esters for transformers and similar electrical equipment