List of abbreviations
C.1 List of abbreviations
3VA molded case circuit breakers with IEC certificate
Manual, 03/2019, A5E03603177010-03
653
RMS Root Mean Square
RS [interface] Formerly: Radio Selector; now usually: Recommended Standard
RTU
[Modbus interface]
Remote Terminal Unit
SAS Short circuit alarm switch
PLC Programmable logic controller
ST Shunt trip
STF Shunt trip flexible
STL Shunt trip left
T Test
T [IT systems] French: Terre (ground)
TC Test device for molded case circuit breaker or MRCD, suitable for systems
with grounded phase
TCP Transmission Control Protocol
TD Test Device
TM Thermal Magnetic
TMTU Thermal Magnetic Trip Unit
TRIP-IND TRIP INDICATOR (trip alarm switch)
TRUE RMS TRUE root-mean-square
TU Trip Unit
UAR Universal release
UL Underwriters Laboratories Inc.
UR Undervoltage release
USB Universal Serial Bus
UPS Uninterruptible power supply
UVR Undervoltage release
VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V. (Association of
German Electrical Engineers)
VDI Verein Deutscher Ingenieure (Association of German Engineers)
ZSI Zone selective interlocking
To Next Page
Loading...
