Rectifiers are produced for rated current of 2500 A according to 12-pulse and 6-pulse “bridge” rectification circuits.
Basis of DC Switchgears construction concept is increased reliability and decreased to minimum necessity of maintenance and periodic repair of equipment.
Traction network monitoring and protection system SMTN-3 is appled in switchgear to protect traction network against short circuit currents and unacceptable overloads. Implementation of all protections is based on amplitude-time analysis of protected device voltage and current values.
Modern cabinets of 825V contact network are meant for operation in metro traction network system both in tunnel and depot. Distinctive features: high reliability; decrease of overall dimensions and weight; maintenance convenience; reduction of time for maintenance;
reduction of fire possibility.