RN and RUN switch disconnectors with air interrupters with switching current 100A

Overhead modular switch disconnectors type RN III 24/4-100A (RUN III 24/4-100A) are appliances used in overhead distribution networks 15 and 20 kV and are designed for switching off/on the load current up to 100 A. Rated continuous current 400 A.
Switch disconnectors are composed of three independent poles installed on a transmission shaft. The distance between particular poles can be adjusted in a range between 450 and 650 mm.
Modular construction of the unit allows installation of particular elements- carrying beam, poles, drive – on a pole without the need to use heavy equipment. The construction of the unit allows its installation on a standard pole without additional supporting structures. Connections are equipped with composite insulators with a polycarbonate core in HTV rubber cover type HASDI. Main contacts are made from profiled copper flat bars coated by silver plating or tinning, depending on the ZE standards. Isolators are equipped with contact systems with air load break interrupters. Movable isolators are equipped with contact systems with a switching contact and spring mechanism. Poles are beared with brass sleeves. As standard, the overhead power line connection allows installation of isolated or naked aluminum electricity cables with a cross-section 16-95 mm2 (a special design allows connecting cables with a cross-section 120 mm2). A flexible contact takes over bending effects on a movable appliance pole. Appliances construction allows expansion of operating devices with additional modules- earthing switches, load break interrupter, lightning arresters or additional insulators – allowing the configuration depending on the needs.

Switch disconnectors can be installed in a horizontal or vertical position.
Switch disconnectors are adapted to the remote control using drives series NSP-7/SO-2 i NSP-8/SO2, as well as to the manual drive using a crank (which is located inside the drive) or only by a manual drive (without the motor).

Switch disconnectors are permitted to be used in all marketing companies. They can be equipped with current transformers type AGCE-24 or CSO, which are used to detect short-circuit currents in MV networks.