Abbreviations, and Acronyms
SCADA
Communication module
sec
Second(s)
sec
Secondary
Sgen
Sine wave generator
Sig.
Signal
SNTP
SNTP-Module
SOTF
Switch Onto Fault - Module
StartFct
Start function
Sum
Summation
SW
Software
Sync
Synchrocheck
Sys.
System
t
Tripping delay
t or t.
Time
Tcmd
Trip command
TCP/IP
Communication protocol
TCS
Trip circuit supervision
ThR
Thermal replica module
TI
Manufacturer internal product designation code
TripCmd
Trip command
txt
Text
UL
Underwriters Laboratories
UMZ
DEFT (definite time tripping characteristic)
USB
Universal serial bus
V
Voltage-stage
V
Volts
V/f>
Overexcitation
V012
Symmetrical Components: Supervision of the Positive Phase Sequence or Negative Phase
Sequence
Vac / V ac
Volts alternating current
Vdc / V dc
Volts direct current
VDE
Verband Deutscher Elektrotechnik
VDEW
Verband der Elektrizitätswirtschaft
VE
Residual voltage
VG
Residual voltage-Stage
VINV
Very inverse tripping characteristic
VTS
Voltage transformer supervision
W
Watt(s)
WDC
Watch dog contact (supervision contact)
www
World wide web
XCT
4th current measuring input (ground or neutral current)
XInv
Inverse characteristic
647
MRU4
DOK-HB-MRU4-2E