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S23
Signaling switch for 2nd shunt trip
S24
Bell Alarm signaling switch
S3
Contact position-driven auxiliary switch
S30
Signaling switch for disconnected position (TOC)
S31
Signaling switch for test position (TOC)
S32
Signaling switch for test position (TOC)
S33
Signaling switch for connected position (TOC)
S34
Signaling switch for connected position (TOC)
S35
Signaling switch for connected position (TOC)
S4
Contact position-driven auxiliary switch
csignaling switch for "ready-to-close"
S40
c signaling switch for "closing spring charged"
S41
c signaling switch for 2nd shunt trip
S43
c signaling switch for "main contacts OPEN / CLOSED"
S44
c tripped signaling switch
S45
c signaling switch for connected position
S46
c signaling switch for test position
S47
c signaling switch for disconnected position
S48
S50 ... S53
MOC (external auxiliary switches)
S7
Contact position-driven auxiliary switch
S8
Contact position-driven auxiliary switch
S-tripping
Short-time delayed tripping
SIGUT
Siemens trademark for aux. termination technique
ST
Shunt trip
T.U. ERROR
Trip unit error
TEST
Test position
t
Delay time for G-tripping
g
TOC
Truck operated cell switch (S30 ... S35)
t
Delay time for L-tripping (defined at 6 x I
R
TRIP G
Trip cause was ground fault
TRIP I
Trip cause was short-circuit (instantaneous)
TRIP L
Trip cause was overload
TRIP N
Trip cause was neutral pole overload
TRIP S
Trip cause was short-circuit (short-time delayed)
t
Delay time for S-tripping
sd
t
Delay time for load monitoring
x
U
Rated control voltage
c
U
Rated operational voltage
e
U
Rated insulation voltage
i
U
Rated impulse withstand voltage
Imp
UVR
Undervoltage release (instantaneous)
UVR td
Undervoltage release (delayed)
25 – 3
)
R
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