Siemens SENTRON 3WL10 Series Manual page 63

Enhanced protection functions - only available with
MF Advanced metering function
DST Directed short-circuit protection DST
Protection function can be enabled/disabled
Enabling/disabling of tripping on directed
(directional) short-circuit protection
Setting range I
FW (top → bottom)
Setting range I
BW (bottom → top)
Switchable short-time-delayed short-circuit
protection (inverse-time in relation to I²t)
Setting range of delay time t
direction
Setting range of delay time t
direction
Switchover to alternative operating values with
directed (directional) short-circuit current during
the switch-on phase (inrush adaptation)
for tripping characteristic t=k (fixed) possible
Setting range of the switch-on phase
Setting range I
phase in the forward direction FW
Setting range I
phase in the backward direction BW
Settings DST phase difference angle
Definition of direction of power flow
V-NBA Phase voltage unbalance V-NBA
Protection function can be enabled/disabled
Setting range U
Setting range of the delay time t
voltage unbalance
Enabling/disabling of tripping on phase voltage
unbalance
Air circuit breaker 3WL10
Manual, 11/2017, L1V30499596002-01
= I x ... in forward direction
dsd n
= I x ... in backward direction
dsd n
FW in forward
dsd
BW in backward
dsd
= I x ... during the switch-on
dsd n
= I x ... during the switch-on
dsd n
phase voltage unbalance
nba
for phase
nba
ETU650 LSI
●
●
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0.6 to 10 (in steps of 0.1)
Default value: 2
0.6 to 10 (in steps of 0.1)
Default value: 2
●
0.1 to 0.5 s (in steps of 0.01)
Default value: 0.2 s
0.1 to 0.5 s (in steps of 0.01)
Default value: 0.2 s
●
0.10 to 30 s (in steps of 0.01)
Default value: 0.1
0.6 to 10 (in steps of 0.1)
Default value: 2
0.6 to 10 (in steps of 0.1)
Default value: 2
3.6°; 7.2°; 10.8°; 14.5°; 18.2°; 22.0°; 25.9°; 30°; 34.2°;
38.7°; 43.4°; 48.6°; 54.3°; 61.0°; 69.6°
Default value: 3.6°
Bottom → top; top → bottom
Default value: top → bottom
●
2 to 90 % (in steps of 1 %)
Default value: 50 %
0.50 to 60 s (in steps of 0.5)
Default value: 10 s
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Description
2.4 Electronic trip unit ETU
ETU660 LSIG
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●
●
0.6 to 10 (in steps of 0.1)
Default value: 2
0.6 to 10 (in steps of 0.1)
Default value: 2
●
0.1 to 0.5 s (in steps of 0.01)
Default value: 0.2 s
0.1 to 0.5 s (in steps of 0.01)
Default value: 0.2 s
●
0.10 to 30 s (in steps of 0.01)
Default value: 0.1
0.6 to 10 (in steps of 0.1)
Default value: 10
0.6 to 10 (in steps of 0.1)
Default value: 10
●
2 to 90 % (in steps of 1 %)
Default value: 50 %
0.50 to 60 s (in steps of 0.5)
Default value: 10 s
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