本指南基于十多年来使用直流（dc）电压的斜面跟踪和侵蚀试验装置评估户外绝缘材料的跟踪和侵蚀性所积累的知识和经验。本指南讨论了在直流电压下进行可行试验所需考虑的各个重要方面。然而，必须明确的是，对于直流斜面跟踪和侵蚀试验的任何具体应用，需要判断和经验来分析和平衡所讨论的方面。

This guide is based on the knowledge and experience accumulated over a decade of using the inclined plane tracking and erosion test setup with direct current (dc) voltages for the evaluation of tracking and erosion resistance of outdoor insulating materials. This guide discusses various important aspects that need to be considered for conducting a feasible test under dc voltages. However, it must be clear that judgment and experience are required to analyze and balance the discussed aspects for any specific application of the dc inclined plane tracking and erosion test.