Siemens SENTRON 3VL System Manual page 352

Glossary
Differential current
Conductor-related flow measurement over time
Direct starter
Function for switching motors on and off.
ESD
Components sensitive to electrostatic charge
ETU (electronic trip unit)
Electronic trip unit
Frequency converters
Frequency-dependent (voltage/current) infeed for operating AC motors.
Frequency-independent load protection
Compensation of different signals at defined control potentials.
G
Ground fault
GF (ground fault)
Ground fault
GND (ground)
Chassis ground
Ground fault
Fault whereby an external conductor comes into contact with ground or the grounded neutral
point.
GSD
Device master data
Harmonic protection
Protection against harmonics at DC voltage levels.
352
3VL molded-case circuit breakers
System Manual, 03/2009, 110 0110 - 02 DS 01