Retrofit D-20 type

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General characteristics

ELEKTROBUDOWA SA offers an attractive way of retrofitting medium voltage D20 indoor switchgears by replacing the existing withdrawable part with minimum oil circuit breaker by modern vacuum circuit breakers (withdrawable solution) with nominal currents from 630 A to 1250 A.
We offer withdrawable parts with vacuum circuit breakers of the following types:

  • SION manufactured by SIEMENS,
  • VD4 manufactured by ABB,
  • HVX manufactured by SCHNEIDER ELECTRIC.

The circuit breaker is connected to the bus system of the existing switchgear and to the cable connection by means of bushings with fixed contacts, the switch itself is located in a separate compartment. This solution protects the expensive circuit breaker from demage due to possible arc fault, that for example occured on the connection side.

Features of Rertrofit

  • the cheapest and simplest way of switchgear upgrading,
  • modern vacuum circuit breaker, which increase reliability of power supply,
  • overall dimensions of the switchgear and station building remain unchanged,
  • the sequence of working cells remains unaffected,
  • replacement of elements is not complicated,
  • there is no need for rewiring the auxiliary circuits connection.

 Retrofit of withdrawable part in SERVICE positionRetrofit of withdrawable part in REMOVED position

Product card in pdf formatRetrofit D-20 type plik .pdf

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+48 63 24 66 348

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