本指南基于室温硫化（RTV）硅橡胶涂层的使用知识和超过25年的经验，用于改善户外高压（HV）绝缘子的污染性能。本指南讨论了高压绝缘子涂层（HVIC）长期性能良好所需的各个重要方面；即，各种应用方法、预涂绝缘子、部分涂绝缘子、涂绝缘子的维护问题、影响长期性能的因素、老化问题、实验室加速试验和功能室外评估。 然而，必须明确的是，对于任何特定的应用，需要判断和经验来分析和平衡许多特性，这些特性经过讨论，以获得令人满意的性能和可靠性。

This guide is based on the knowledge and more than 25 years of experience on the use of room-temperature vulcanizing (RTV) silicone rubber coatings that are used to improve the contamination performance of outdoor high-voltage (HV) insulators. This guide discusses various important aspects that are needed for satisfactory long-term performance of HV insulator coatings (HVIC); namely, various application methods, pre-coated insulators, partially coated insulators, maintenance issues on coated insulators, factors aff ecting long-term performance, the question of aging, laboratory accelerated tests, and functional outdoor evaluation. However, it must be clear that for any specifi c application, judgment and experience are required to analyze and balance the many characteristics, which are discussed to obtain satisfactory performance and reliability.