Friday, November 23, 2012
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Instruction Manual VD4 Vacuum Circuit-breaker
The vacuum circuit-breakers of type VD4 on with-
drawable parts for 36 kV or 40.5 kV rated voltage
are intended for indoor installation in air-insulated
switchgear systems. Their switching capacity
is sufficient to handle any conditions arising
from switching of equipment and system
components under normal operating and fault
conditions, particularly short-circuits, within the
parameters of their technical data.
Vacuum circuit-breakers have particular ad- switching frequency in the working current range and/or where a certain number of short-circuit breaking operations are expected. Type VD4 vacuum circuit-breakers are suitable for auto- reclosing, and have exceptionally high operating reliability and long life.
The vacuum circuit-breakers designed in column form, are supplied as withdrawable modules. Their basic structure is shown in figures 3/1,3/2,3/7 and 3/8. download here
Instruction Manual VD4 Vacuum Circuit-breaker
Vacuum circuit-breakers have particular ad- switching frequency in the working current range and/or where a certain number of short-circuit breaking operations are expected. Type VD4 vacuum circuit-breakers are suitable for auto- reclosing, and have exceptionally high operating reliability and long life.
The vacuum circuit-breakers designed in column form, are supplied as withdrawable modules. Their basic structure is shown in figures 3/1,3/2,3/7 and 3/8. download here