BS EN IEC 61125:2018描述了评估绝缘材料氧化稳定性的试验方法 在加速条件下处于交付状态的液体，无论是否 存在抗氧化剂添加剂。测试的持续时间可能会因时间而异 绝缘液体类型，并在相应标准中定义（例如IEC 60296， IEC 61099、IEC 62770）。该方法可用于测量诱导期，测试 在以下情况下，持续至挥发性酸度显著超过0.10 mg KOH/g: 矿物油。在酯液体的情况下，该值可能显著更高。在存在固体铜催化剂的情况下，将绝缘液体样品保持在120°C 同时以恒定流量使空气鼓泡。氧化稳定性的程度由以下公式估算: 测量挥发性酸度、可溶性酸度、污泥、介电损耗因子，或 形成一定量挥发性酸度的时间（空气诱导期）。 交叉引用:IEC 60422:2013EN 60422（IEC 60422:2013）ASISO 6344-1ISO 3104IEC 62021-3EN 62021-3ISO 4793EN 62021-2EN 60247ISO 383EN ISO 3104IEC 62021-2ASTM E287IEC 60247EN 62770IEC 60296EN 61099IEC TR 62036IEC 62770IEC 60666IEC 62021-1EN 60296IEC 61099EN 60666EN 62021-1IEC 60050-212购买本文件时可提供的所有现行修订版。

BS EN IEC 61125:2018 describes a test method for evaluating the oxidation stability of insulating liquids in the delivered state under accelerated conditions regardless of whether or not antioxidant additives are present. The duration of the test can be different depending on the insulating liquid type and is defined in the corresponding standards (e.g. in IEC 60296, IEC 61099, IEC 62770). The method can be used for measuring the induction period, the test being continued until the volatile acidity significantly exceeds 0,10 mg KOH/g in the case of mineral oils. This value can be significantly higher in the case of ester liquids.The insulating liquid sample is maintained at 120 °C in the presence of a solid copper catalyst whilst bubbling air at a constant flow. The degree of oxidation stability is estimated by measurement of volatile acidity, soluble acidity, sludge, dielectric dissipation factor, or from the time to develop a given amount of volatile acidity (induction period with air).Cross References:IEC 60422:2013EN 60422 (IEC 60422:2013) ASISO 6344-1ISO 3104IEC 62021-3EN 62021-3ISO 4793EN 62021-2EN 60247ISO 383EN ISO 3104IEC 62021-2ASTM E287IEC 60247EN 62770IEC 60296EN 61099IEC TR 62036IEC 62770IEC 60666IEC 62021-1EN 60296IEC 61099EN 60666EN 62021-1IEC 60050-212All current amendments available at time of purchase are included with the purchase of this document.