1.1 本试验方法测量了当受到足够强度的电应力时，气体被绝缘液体释放或吸收的速率，该电应力在具有特定几何形状的电池中引起电离。 1.2 本试验方法与绝缘液体过饱和引起的气泡无关。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。使用本标准的人有责任在使用前咨询并建立适当的安全和健康实践，并确定监管限制的适用性。 有关具体预防措施，请参阅 5.1.4 和 8.4 . ====意义和用途====== 4.1 在某些应用中，当绝缘液体在高电压梯度下受到应力时，需要能够确定特定测试条件下的气体析出率或气体吸收率。目前，此类测试结果与设备性能的相关性有限。 4.2 在本试验方法中，氢（以及低分子量碳氢化合物）是通过离子轰击一些绝缘液体分子产生的，并通过与其他绝缘液体分子的化学反应吸收。 报告的数值是这两种竞争反应的净效应。绝缘液体中的芳香分子或分子的不饱和部分在很大程度上负责吸氢反应。分子类型和浓度都会影响放气趋势结果。饱和分子倾向于放出气体。绝缘液的芳香性和不饱和物的数量以及放气趋势之间的关系是间接的，不能用于定量评估绝缘液中的任何一种。 4.3 本试验方法基于与氢（局部放电中的主要气体）的反应，测量绝缘液体在电应力和电离条件下吸收或释放气体的趋势。在试验条件下，与其他气体（例如氮气）相比，活化气体氢气增强了对绝缘液体表现出的吸收演变模式差异的区分。绝缘液体显示有气体- 吸收（H 2. )测试中的特性有利于减少设备故障，尤其是电缆和电容器。然而，此类绝缘液体在变压器中的优势尚未明确定义，并且本试验方法所示的气体倾向与设备的运行性能之间尚未建立定量关系。本试验方法与气泡演变无关，气泡演变可能由与超临界流体相关的物理过程引起- 湿绝缘形成的油或水蒸汽气泡中的气体饱和。

1.1 This test method measures the rate at which gas is evolved or absorbed by insulating liquids when subjected to electrical stress of sufficient intensity to cause ionization in cells having specific geometries. 1.2 This test method is not concerned with bubbles arising from supersaturation of the insulating liquid. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautions see 5.1.4 and 8.4 . ====== Significance And Use ====== 4.1 For certain applications when insulating liquid is stressed at high voltage gradients, it is desirable to be able to determine the rate of gas evolution or gas absorption under specified test conditions. At present time correlation of such test results with equipment performance is limited. 4.2 In this test method, hydrogen (along with low molecular weight hydrocarbons) is generated by ionic bombardment of some insulating liquid molecules and absorbed by chemical reaction with other insulating liquid molecules. The value reported is the net effect of these two competing reactions. The aromatic molecules or unsaturated portions of molecules present in insulating liquids are largely responsible for the hydrogen-absorbing reactions. Both molecule type, as well as concentration, affects the gassing tendency result. Saturated molecules tend to be gas evolving. The relation between aromaticity and quantity of unsaturates of the insulating liquid and gassing tendency is an indirect one and cannot be used for a quantitative assessment of either in the insulating liquid. 4.3 This test method measures the tendency of insulating liquids to absorb or evolve gas under conditions of electrical stress and ionization based on the reaction with hydrogen, the predominant gas in the partial discharge. For the test conditions, the activating gas hydrogen, in contrast to other gases, for example, nitrogen, enhances the discrimination of differences in the absorption-evolution patterns exhibited by the insulating liquids. Insulating liquids shown to have gas-absorbing (H 2 ) characteristics in the test have been used to advantage in reducing equipment failures, particularly cables and capacitors. However, the advantage of such insulating liquids in transformers is not well defined and there has been no quantitative relationship established between the gassing tendency as indicated by this test method and the operating performance of the equipment. This test method is not concerned with bubble evolution, which may arise from physical processes associated with super-saturation of gases in oil or water vapor bubbles evolving from wet insulation.