Catalog

Description

DTS-series disconnectors for a voltage of 110-220 kV are designed to create visible disconnections (switching on and off) in de-energized areas of the electrical circuit under voltage, no-load currents of transformers, charging currents of overhead and cable lines, as well as grounding disconnected areas of the grid using grounding switches.

DTS disconnectors of a horizontal-rotating type for outdoor installation manufactured in three-pole or single-pole configurations conform to the DSTU EN 62271-102 requirements.

Design:

DTS 126-252 series disconnectors are designed as a two-column device with the rotation of the main blade in a horizontal plane. There are the following installation options: three-pole, two-pole, and single-pole. The disconnector is manufactured with or without grounding blades. The location of the grounding switches is specified in the inquiry form.

The metal parts of the disconnectors, supporting poles, connecting hardware (bolts, nuts, etc.) are protected from the negative effects of the environment by hot-dip galvanizing. The pole of the disconnector to which the drive is connected is called the leading pole. The pole of the disconnector that is connected to the leading one is called the trailing pole. The pole of the disconnector consists of a frame, insulators, a conductive system, and a grounding switch if available.

The frame of the disconnector is a welded metal structure with the bases of the rotating columns mounted on it. The base of the rotating column features pressed closed bearings that do not require lubrication and maintenance throughout their entire service life. The pole of the disconnector to which the drive is connected is called the leading pole. The pole of the disconnector that is connected to the leading one is called the trailing pole. When supplying a disconnector without a common frame, the connection of the leading pole of the disconnector to the drive and the trailing poles of the disconnectors is carried out with the help of the complementary parts at the installation site. When supplying a disconnector mounted on a common frame, the disconnector is connected to the drive at the installation site.

The conductive system is mounted on the upper flanges of the insulators. A contact blade with an incoming contact with a roller contact system at its base is installed on the moving insulator. The contact surfaces of the roller contact are coated with galvanic silver. The necessary contact pressure is provided with the help of a spring. The contact rods are made from beryllium bronze with a silver coating at the points of contact with the contact receiving blade of the stationary column.

The necessary contact pressure is ensured due to the spring properties of beryllium bronze throughout the entire service life. All external surfaces of the main conductive system are coated with the protective galvanic tin. The main blades and grounding switches of the disconnector are operated using an RSM-1-type manual drive or an RSD-1-type electromechanical drive (or similar drives).

Designations of DTS disconnectors:

Key technical specifications of DTS disconnectors: