The DRN type ladder can be used in vertical position to work with electricity, telecommunication and other poles. Shape of supports ensures proper positioning and fixing the ladder to various shapes of poles (round, rectangular, octagonal or other). DRN-22 ladders feature strong but light construction and fast and easy assembly/disassembly of sections.
The ladder is equipped with a USM-1 type device protecting from fall down from the height. This is a self-locking device moving on a guide rail attached to one of the side supports (picture 1).
A ladder with SI-22 insulated sections (one or several) can be utilised while working on the devices under voltage. See picture 4.
Requested length of the ladder can be obtained by proper selection of ladder sections as indicated in the table.
Additional possibility to make adjustment of ladder length, with grading each 0,28 m, can be obtained by using upper section as displayed on picture 3.
Ladder is consistent with requirements of EN 131-2 and EN 353-1 norms.