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General information
Intended use
9229 9947 176 0C
2013-03-28
WARNING
Dangerous voltage and mechanical movements
When operating electrical devices, certain parts will always be live, and
mechanical parts may move very quickly, even when remotely controlled.
If the warnings are not observed, serious injury or damage to material may be the
result.
Only personnel with the relevant qualifications may work on or in the vicinity of
this device. This personnel must be familiar with all the warnings and servicing
measures specified in these operating instructions.
Smooth and safe operation of this device requires proper transport and storage, and
professional installation and assembly 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.
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 by masses or forces and
•
additional parts are sufficiently far away especially from moving and live
parts.
If vacuum circuit-breakers are to be equipped with additional functions by the
customer, we recommend consulting the factory, since tried and tested solutions
are frequently available (see also "Additional equipment", on page 19).
Range of application
3AH47 vacuum circuit-breakers are one-pole or two-pole interior circuit-breakers for
a rated voltage of 17.5 kV - 27.5 kV.
3AH47 vacuum circuit-breakers can handle up to 60 000 operating cycles if the
maintenance schedule is observed.
3AH47 vacuum circuit-breakers are suitable for switching any type of alternating
current circuits under normal operating conditions, such as:
•
Three-phase motors for reversing, turning and direct operation
•
Transformers
•
Capacitors
•
Resistor consumers
Suitable for high frequency of operation and unlimited on-time.
3AH47 vacuum circuit-breakers operate in continuous, periodic and short-time
operation.
General information
13
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