Siemens SENTRON 3VL System Manual page 356

Glossary
S
Short-time delay
Selectivity
Detection of the tripping state of an event.
Soft starters
Function for starting/stopping motors smoothly.
Star connection
Connection in which the three phase elements of a three-phase system are each connected
to one end of a motor winding. The connection created in this way forms the center point -
also known as the star point.
State detection
Detection and logging of states and state changes in the energy distribution system.
State display
Graphic representation of the states of objects.
STD (short-time delay)
Short-time delay
Stored-energy spring mechanism
Mechanical memory that maintains a defined state over a specific time in response to an
event.
Switching capacity
Switching characteristics of a switch that specifies the frequency of switching operations over
a specific period of time.
Thermal memory
Checks the motor-size-dependent cooling performance that prevents overheating of the
motor when it switches on again following an overload trip.
TM
Thermomagnetic trip unit
356
3VL molded-case circuit breakers
System Manual, 03/2009, 110 0110 - 02 DS 01