General information
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2019-08-05
General information
Smooth and safe operation of this device requires proper transport, professional
storage, set-up and installation, as well as careful operation and maintenance.
The basic version and all listed configurations of the vacuum circuit-breakers are
type-tested devices as per IEC.
The images shown are examples; not all the variants of the vacuum circuit-breaker
are shown here.
Areas of application
SION
®
vacuum circuit-breakers are 3-pole interior circuit-breakers for a rated volt-
age range of 7.2 kV to 24 kV.
Under normal service conditions, the vacuum circuit-breaker (as per IEC 62271-1
and VDE 0671-1) is maintenance-free for up to 10 000 operating cycles.
30 000 operating cycles require maintenance work that must only be performed by
personnel trained by Siemens (see also “Maintenance” on p. 61).
WARNING
Dangerous electrical voltage and mechanical movements
When electrical devices are operated, certain parts are inevitably live under
dangerous voltage, and mechanical parts may move very quickly, also
when remotely controlled.
If the warnings are not observed, serious injury may be the result.
Only personnel with the relevant qualifications may work on or in the vicinity of
this device. These personnel must be familiar with all warnings and servicing ac-
tivities specified in these operating instructions.
Note
In the event of subsequent attachments or fittings, e.g. locking parts in connection
with switchgear, ensure that
• fast moving parts are not additionally loaded with masses or forces and
• additional parts have sufficient clearance, in particular, from moving and live
parts.
If vacuum circuit-breakers are to be equipped with additional functions by the cus-
tomer, we recommend consulting the factory, since tried and tested solutions are
frequently available (see also “Additional equipment”, on page 18).
