1.1本规程涵盖了从变压器气体空间或气体收集器继电器中进行的气体采样，其中可用气体体积较小，不允许使用规程D 2759。 1.2本规程涵盖使用气密注射器作为取样装置和容器的取样。 1.3如果发现待取样的仪器处于负压下，应通过添加氮气提高仪器压力，直到获得正压力。 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 由于故障，充油电气设备中可能会形成气体。断层的类型及其严重程度通常可以从气体的成分中推断出来。 从变压器气体空间或气体收集器继电器中采集气体样本，以确定气体样本的成分。 在氮包层变压器中，故障产生的气体将在气相和液相之间分配。在带有气体收集器继电器的变压器上，气泡形式的气体可以收集在气体收集器继电器中，并提供获取气体样本以进行分析的方法。 不要从通电的互感器中抽取样本。

1.1 This practice covers the sampling of gas from a transformer gas space or from a gas-collector relay where the volume of gas available is small and will not permit the use of Practice D 2759. 1.2 This practice covers sampling, using a gas-tight syringe as the sampling apparatus and container. 1.3 If the apparatus to be sampled is found to be under a negative pressure, the apparatus pressure should be raised by the addition of nitrogen gas until a positive pressure is obtained. 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. ====== Significance And Use ====== Gases may be formed in oil-filled electrical equipment as a result of faults. The type of fault and its severity may often be inferred from the composition of the gases. Gas samples are taken from transformer gas spaces or from gas-collector relays in order that the composition of the gas sample may be determined. In nitrogen-blanketed transformers, the gases generated by a fault will partition between the gaseous and liquid phases. On transformers with gas-collector relays, gas in the form of bubbles may collect in a gas-collector relay and provide a means to obtain a gas sample for analysis. Do not draw samples from an energized instrument transformer.