Siemens SIMATIC ET 200SP System Manual page 67

Rated conditional short-circuit current I
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
power (motor power), as well as the corresponding rated voltage U
Recovery time
When a protection function in a switching device has been tripped (e.g. 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.
RoHS
EC Directive 2002/95/EC concerning the restriction of certain dangerous substances in
electrical and electronic devices 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.
SELV
Safety Extra Low Voltage
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.
Trip class (CLASS)
The trip class of an inverse time-delay overload relay specifies the maximum tripping time
from cold at a particular load. The trip class number (e.g. CLASS 10A) represents the
maximum permissible tripping time in seconds when the motor starter is subjected to a
symmetrical 3-pole load from cold with 7.2 times the current setting (IEC 60947-4-1;
DIN VDE 0660 Part 107).
Motor starter
System Manual, 04/2016, A5E35582704002A/RS-AA/001
q
(current specified by the conditions of use) or the rated
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Glossary
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