Retrofit on Circuit-breakers 1250A / 2500A / 4000A

Best (Holland)

Description

The retrofit project of medium-voltage (MV) circuit-breakers was addressed to n. 12 primary distribution plants and run by one of the leading companies in the electricity distribution field in the south of the Netherlands.

The retrofit solution consists of applying improvements and technological changes to the products, thus extending their life cycle. It reduces the production of polluting material, guaranteeing economic and environmental savings. This process is based on a sophisticated approach of reverse engineering, which consists of creating a new component integrated into the existing plant.
N. 384 new automatic switches 1250A, 2500A and 4000A have been installed, technologically updated, replacing those currently in use. The circuit-breakers have been mounted on special carriages, in order to allow connection with the electrical panels and the interface with the pre-existing blocks and control systems. The carriages are of four different types with the following technical characteristics:

  • trolley for arrival lines 12kV 1250A 31.5kA
  • trolley for departure lines 12kV 1250A 40kA
  • trolley for arrival lines 12kV 2800A 31.5kA
  • trolley for departure lines 12kV 4000A 40kA

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