Earthing switches of series ZR(P)-110 kV

Earthing plates ZR(P)-110 kV are designed for earthing of power transmission lines at rated voltage of 110 kV, as well as for earthing of power transformers neutrals, which do not have protection against earth faults. Earthing switches are made in one-pole and three-pole version, the earthing switch is operated by motor drive PD-14 or manual drive PRG-6. Earthing switches can be supplied with supporting metal structures. ZR - chopping type earthing switch; .Main technical characteristics:- rated voltage - 110 kV;- rated current - 315 (1000) A;- rated frequency - 50 Hz;- rated short-term withstand current (thermal resistance current) - 40 kA;- largest peak of rated short-term withstand current (electrodynamic resistance current) - 100 kA;porcelain and polymer (P) insulation