Siemens SINOVA - Page 214

List of abbreviations
3WJ Air Circuit breakers
Operating Instructions, 12/2022, L1V30828903001-01
213
Abbreviation
Meaning
Icc
Conditional short-circuit current
Icm
Rated short-circuit making capacity
I
cs
Rated service short-circuit breaking capacity
Icu
Rated ultimate short-circuit breaking capacity
Icw
Rated short-time withstand current
ID
ID number
IEC
International Electrotechnical Commission
Ig
Setting for ground-fault protection
Ii
Setting for instantaneous short-circuit trip
IIT
1-pole short-circuit test current (IT systems)
IN
Setting for N-conductor protection
I
n
Rated current
In max
Max. possible rated current
IOM
Input/output module
I
r
Setting for inverse-time delayed overload trip
Isd
Setting for short-time delayed short-circuit trip
ITHD
Setting for total harmonic distortion (THD) current
L1
Phase 1
L2
Phase 2
L3
Phase 3
L tripping
Inverse-time delayed overload trip
LED
Light emitting diode
M
Motor
MLFB
Machine-readable product code (German acronym)
N
Neutral conductor
N 117
Australian approval mark
NC
Normally closed contact
NEMA
National Electrical Manufacturers Association
NO
Normally open contact
NIOSH
National Institute for Occupational Safety and Health
N tripping
Tripping due to overcurrent in the N-conductor
OP
ON period
OSHA
Occupational Safety and Health Administration
PIDG
AMP crimp eyelets
PSS
Position signaling switch (module)
PZ 3 … 6
Crimping tools from Weidmüller in Detmold
RR
Remote Reset (remote trip alarm reset coil)
S tripping
Short-time delayed short-circuit trip
SIGUT
Siemens strain-relief clamp
ST
Shunt trip
ST2
Shunt trip 2 (second shunt trip)
TEST
Test position
tg
Delay time of ground-fault tripping
tr
Delay time of overload trip (defined as 6 x Ir)
TRIP GF
Cause for last trip was a ground fault
TRIP INST
Cause for last trip was a short-circuit (instantaneous)