7
2 General
2.2 Safety
Instructions
During operation, certain parts of the circuit-breaker are live and hazardous voltages therefore present.
Certain parts are also under gas pressure (SF
6
).
In its pure state, sulphur hexafluoride (SF
6
) is a colourless, odourless, tasteless, non-toxic and non-flammable
gas, inactive like nitrogen. SF
6
is safe if there is adequate oxygen present in inhaled air. SF
6
constitutes no
danger to the ecosystem.
Personnel must be thoroughly familiar with all warnings and procedures for installation, operation,
maintenance and repair contained in these operating instructions.
WARNING
Non-observance of warnings can result in death, severe personal injury and substantial
property and environmental damage.
The user of the circuit-breaker must ensure that the installation, maintenance and relevant operating direc-
tives to the appropriate activity, local safety regulations and information on what to do in the event of an acci-
dent are available or displayed, e.g. on a notice board so that they can be referred to at any time.
Additionally to the safety rules valid in the country in question a few precautionary measures and points to be
noted are listed below:
- The accessory items required for installation, operation and maintenance of the circuit-breaker and for
reasons of safety (protecting clothes, devices for manual operation, warning signs, hand lamps, fire
extinguishers etc.) must be stored neatly at a certain point and be checked regularly for completeness
and proper functioning. This also includes the complete operating instructions.
-
The specified maintenance intervals and the instructions for repair and replacement must be adhered to.
-
Detailed warning references describing the secure execution of dangerous work are included in the
particular sections of the operating instructions. They are highlighted by frames, bold lettering and/or
other means.
WARNING
in the sense of these operating instructions means that death, severe personal injury or
substantial property and environmental damage may occur if appropriate safety measures
are not taken.
Attention
in the sense of these operating instructions means that light personal injury or
property/environmental damage may occur if appropriate safety measures are not taken.
)
Note
Note in the sense of these operating instructions means information to simplify and improve the
handling of the circuit-breaker. They are based on the experiences of Siemens staff.
