A List Of Abbreviations - Siemens SENTRON 3WL10 Manual

A List of abbreviations

Overview
Communication 3WL10 Air Circuit Breakers & 3VA27 Molded Case Circuit Breakers
System Manual, 06/2019, L1V30499596021-01
Table A- 1 Meaning of abbreviations used in this document
Abbreviation Meaning
AC AC voltage
ACT Actuator module
CC Closing coil
DC Direct voltage
DIN Deutsches Institut für Normierung e. V. (German Institute for Standardization)
EN European Standard
ETU Electronic trip unit
G Ground fault (ground-fault protection GF)
GF Ground fault (ground-fault protection)
I Instantaneous (instantaneous short-circuit protection INST)
I/O Input/Output
IEC International Electrotechnical Commission
INST Instantaneous (short-circuit protection)
IP International Protection
L Long time delay (overload protection LT), overload release
LT Partial overload range of the characteristic curve of a switching device
[tripping
characteristic]
MF Metering function
N Neutral conductor, neutral protection
PSS Position signaling switch
Rc Residual current
Rc CT Summation current transformer
RP Reverse Power
RTC Ready to close signaling switch
S Short-time-delayed short-circuit protection (ST)
ST Short-time delayed short-circuit protection
ST/CC Auxiliary solenoid
TCP Transmission Control Protocol
TD Test Device
Uu Undervoltage protection
Uo Overvoltage protection
A
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