1.1本规范涵盖了氯化芳香烃型合成不易燃电气绝缘液体，称为askarels，用作充液变压器的绝缘和冷却介质。本规范包括之前可用且仍在仪器中使用的液体。 1.2本规范涵盖的Askarels类型多样，其成分重量百分比符合表1。 注1-给出的成分和相应百分比是对当前常用材料的描述，不作为本规范的一部分，本规范基于物理和化学性质。注2:A型到G型是以前可用的PCB型askarels，目前仍在现场使用。最近H型，非- PCB askarel是作为改装和更换而引入的。注3:现行政府法规禁止生产和销售多氯联苯。该方法可作为所有ASKAREL、PCB和非PCB的参考。

1.1 This specification covers synthetic nonflammable electrical insulating liquids of the chlorinated aromatic hydrocarbon-type known as askarels, which are used as an insulating and cooling medium in liquid-filled transformers. This specification includes liquids that were previously available and are still in use in apparatus. 1.2 Askarels covered by this specification are of various types, having components in weight percent in accordance with Table 1. Note 1-The components and the respective percentages given are descriptive of the materials currently in common use and are not intended as part of this specification, which is based on physical and chemical properties. Note 2-Types A through G are PCB-type askarels previously available and still in use in the field. Recently Type H, a non-PCB askarel, was introduced as a retrofit and replacement. Note 3-Current governmental regulations prohibit the manufacture and sale of polychlorinated biphenyls (PCBs). This method serves as a reference for all askarels, PCB and non-PCB.