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Our high-voltage disconnectors and earthing switches combine state-of-the-art technology with the highest quality standards for a voltage range from 36 kV to 800 kV.
Each of the three phases of the disconnector consists of two insulators mounted on maintenance free, sealed rotary or close switching position even under extreme external conditions such as storms, earthquakes etc. Superior design of mechanical interlock.
SERW disconnectors of auxi-liary busbars with earthing switches. terminals. Thus, disconnectors provide a visual seperation of two diferent networks. The sketch below illustrates how disconnectors are used in a 420kV substation, for example.
Ideally suited for voltages up to 253 kV, the modular ELK-14 range combines innovation with tried-and-tested qualities: the features that have given ABB GIS systems their international reputation. Safety The combined disconnector/earthing switch guarantees maxi-mum operational safety. Reliability
The ES earthing switches. ES are “Class E0” (ref. to IEC 62271-102) earthing switches, suitable for the installation both combined with disconnectors and as “stand-alone” equipment. The “stand-alone” type is described in this brochure, but all construction features and ratings are also valid (with the obvious differences) for ...
• 245 kV Double Break Disconnector are designed for independent single pole operation or three pole electrically / mechanically ganged operation. Disconnectors can be supplied with or without earth switches. Where earth switch is required, single or double earth switch can be provided.
The DDV vertical break disconnector requires the optimized spaces in both horizontal and vertical directions, making it suitable for substations with small installation area. The DDV disconnector range includes products for rated parameters 145 / 170 / 245 kV, 3150 A and 63 kA.
