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