NEMA TC 19-2017列出了尺寸，阐述了性能，概述了性能要求和测试方法，并协助选择和获得合适的PVC和PE非金属立管U型防护装置，用于保护电线杆上的立管电缆。

NEMA TC 19-2017 lists dimensions, sets forth properties, outlines performance requirements and test methods, and assists in selecting and obtaining the proper PVC and PE nonmetallic riser U-type guards intended to protect riser cables on utility poles.