Siemens 340, Руководство пользователя

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Glossary
SIRIUS 3RM1 motor starter
Manual, 11/2013, A5E0345285095020A/RS-AB/002
167
Push-in lugs for wall mounting
The adapters for screw mounting enable the 3RM1 motor starter to be mounted on a level
surface.
Rated conditional short-circuit current I
q
The assured short-circuit breaking capacity of switchgear assemblies and load feeders, also
called "rated conditional short-circuit current".
Rating data for the main circuit
The most important rating data for the main circuit in terms of selecting a switching device
are the rated operational current I
e
(current specified by the conditions of use) or the rated
power (motor power), as well as the corresponding rated voltage U
e
.
Recovery time
When a protection function in a switching device has been tripped (e.g. 3RM1 motor starter)
the motor cannot be restarted until a recovery time has elapsed. The recovery time is
dependent on the cause of the fault. For further information, refer to the relevant product
documentation.
Response delay
The response delay is the time from the start of entering a command until the time that the
first contact connection is made, at the contactor, for example. The switch-on delay is the
time between application of the control voltage and the first current flow. The switch-off delay
is the time between removal of the control voltage and interruption of the current flow.
RoHS
EC Directive 2002/95/EC concerning the restriction of the use of certain hazardous
substances in electrical and electronic equipment regulates the use of hazardous
substances in devices and components. The English abbreviation RoHS is used to refer to
this directive: (Restriction of the use of certain hazardous substances), as well as all related
measures for implementing it into national legislation.
Service life
Period of time for which the switching device will work properly under normal operating
conditions. This is specified as the number of operating cycles, the electrical durability (e.g.
contact erosion), and the mechanical durability (e.g. operating cycles without load).
SIL (Safety Integrity Level)
Discrete level (one of a possible three) for the determination of the safety integrity
requirements of safety-related control functions. Safety integrity level 3 is the highest
possible level, level 1 the lowest.