Description
2.4 Electronic trip unit ETU
Air circuit breaker 3WL10
60
Manual, 11/2017, L1V30499596002-01
Protection functions of the ETU
ETU650 LSI
ETU660 LSIG
DAS
DAS (Arc fault mitigation)
Protection function can be enabled/disabled
●
●
Setting range for operating value I
i_arc
= I
n
x …
1.5 to 15 (in steps of 0.1)
Default value: 1.5
1.5 to 15 (in steps of 0.1)
Default value: 1.5
I-NBA
Phase current unbalance I-NBA
Protection function can be enabled/disabled
●
●
Setting range I
nba
phase current unbalance
2 to 90% (in steps of 1%)
Default value: 50%
2 to 90% (in steps of 1%)
Default value: 50 %
Setting range of the delay time t
nba
for phase
current unbalance
0.50 to 60 s (in steps of 0.5)
Default value: 10 s
0.50 to 60 s (in steps of 0.5)
Default value: 10 s
Enabling/disabling of tripping on phase current
unbalance
●
●
1)
ETU powered in at least 2 phases or self-powered with auxiliary voltage. In all other cases,
the following tolerances apply:
Current setting value
Tripping time
L
Tripping between 1.05 and 1.2 x I
r
± 20 %
S
± 10 %
± 20 %
I
± 15 %
≤ 60 ms
G
± 15 %
± 20 %
Other protection functions
± 15 %
± 20 %
Summary of Contents for SENTRON 3WL10
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Page 8: ...Table of contents Air circuit breaker 3WL10 6 Manual 11 2017 L1V30499596002 01 ...
Page 170: ...Operation 6 3 Troubleshooting Air circuit breaker 3WL10 168 Manual 11 2017 L1V30499596002 01 ...
Page 180: ...Technical specifications Air circuit breaker 3WL10 178 Manual 11 2017 L1V30499596002 01 ...
Page 199: ...Air circuit breaker 3WL10 Manual 11 2017 L1V30499596002 01 197 Circuit diagrams 10 ...
Page 212: ...Circuit diagrams Air circuit breaker 3WL10 210 Manual 11 2017 L1V30499596002 01 ...
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