IEC 60296:2020提供了未使用和回收的矿物绝缘油的规范和测试方法。它适用于根据合同协议交付的矿物油，用于变压器、开关设备和类似的电气设备，其中需要油进行绝缘和传热。本文件范围内的未使用过的油和回收的油都没有用于电气设备或其他不需要制造、储存或运输的设备，也没有接触过电气设备或其他设备。 未使用的油是通过将石油产品和来自原始原料的其它烃精炼、改性和/或共混而获得的。 回收油是由以前在电气设备中用作矿物绝缘油的油生产的，这些油已经通过场外采用的工艺进行了再精炼或回收（再生）。这种油最初是按照公认的未使用的矿物绝缘油规范供应的。本文件没有区分用于回收矿物绝缘油的方法。现场处理的油（参见IEC 60422）不在本文件的范围内。 含有和不含添加剂的油都在本文件的范围内。 本文件不适用于用作电缆或电容器浸渍介质的矿物绝缘油。 这第五版取消并取代了2012年出版的第四版。本版构成技术修订版。 与上一版相比，此版本包括以下重大技术变更: -本国际标准适用于未使用和回收矿物绝缘油在交付状态下的规格和试验方法。-在变压器绝缘油中，根据其性能定义了A型和B型两组。 -包括一种用于矿物绝缘油热氧化应力下杂散放气的新方法，该方法已在CIGRE D1和IEC技术委员会10之间的联合循环测试(RRT)中进行了测试。

IEC 60296:2020 provides specifications and test methods for unused and recycled mineral insulating oils. It applies to mineral oil delivered according to the contractual agreement, intended for use in transformers, switchgear and similar electrical equipment in which oil is required for insulation and heat transfer. Both unused oil and recycled oil under the scope of this document have not been used in, nor been in contact with electrical equipment or other equipment not required for manufacture, storage or transport.
Unused oils are obtained by refining, modifying and/or blending of petroleum products and other hydrocarbons from virgin feedstock.
Recycled oils are produced from oils previously used as mineral insulating oils in electrical equipment that have been subjected to re-refining or reclaiming (regeneration) by processes employed offsite. Such oils will have originally been supplied in compliance with a recognized unused mineral insulating oil specification. This document does not differentiate between the methods used to recycle mineral insulating oil. Oils treated on-site (see IEC 60422) are not within the scope of this document.
Oils with and without additives are both within the scope of this document.
This document does not apply to mineral insulating oils used as impregnating medium in cables or capacitors.
This fifth edition cancels and replaces the fourth edition published in 2012. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
– This International Standard is applicable to specifications and test methods for unused and recycled mineral insulating oils in the delivered state.
– Within the transformer insulating oils, two groups, Type A and Type B, are defined, based on their performance.
– A new method for stray gassing under thermo-oxidative stress of mineral insulating oils, which has been tested in a joint round robin test (RRT) between CIGRE D1 and IEC technical committee 10, has been included.