... type for protection against overr-voltage damage Polymer lightning arrester (surge arrester) Product DescriptionOur company specializes in supplying 1.9~220kV ... 27,NHY5WZ-17/45,HY5WZ-51/34, HY5WZ-51/130,HY5W-51/125,HY5W-54/134,HY10W-51/125,HY10W-54/134, ... 5, Y5WR-10/27, HY5WR-17/45,HY5WR-51/134,HY10WR-51/134,HY5WD-4/9.5,HY5WD-8/18. ... ,HY5WD-17.5/40, HY5WD-20/45, HY5WD-23/51, HY5WD-25/56.2, HY2.5WD-45/9.5, ...