8
Diagram A) Diagram B)
Figure 2/1: Vacuum circuit-breaker, type VD4,
for 12 kV, 275 mm pole centres, mechanism side
Figure 2/2: Vacuum circuit-breaker, type VD4,
for 12 kV, 210 mm pole centres, pole side
2.4 Permissible number of vacuum interrupter switching operations in relation to breaking current
Figure 2/3: Permissible number of vacuum interrupter operating cycles n as a function of the breaking current I
a
(Reference see section 2.1 – Technical data page 6)
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