Siemens SENTRON 3WL10 - Page 75

Enhanced protection functions - only available with
MF Advanced metering function
ETU650 LSI ETU660 LSIG
V
u
Undervoltage protection V
u
Protection function can be enabled/disabled ● ●
Setting range of undervoltage protection U
u
= U
n
x ...
0.5 to 0.98 (in steps of 0.01)
Default value: 0.9
0.5 to 0.98 (in steps of 0.01)
Default value: 0.9
Setting range of the delay time for undervoltage
protection
0.05 to 120 s (in steps of 0.01)
Default value: 10 s
0.05 to 120 s (in steps of 0.01)
Default value: 10 s
Enabling/disabling of tripping on undervoltage
protection
● ●
V
o
Overvoltage protection V
o
Protection function can be enabled/disabled ● ●
Setting range of overvoltage protection U
o
= U
n
x ...
1.02 to 1.5 (in steps of 0.01)
Default value: 1.05
1.02 to 1.5 (in steps of 0.01)
Default value: 1.05
Setting range of the delay time for overvoltage
protection
0.05 to 120 s (in steps of 0.01)
Default value: 10 s
0.05 to 120 s (in steps of 0.01)
Default value: 10 s
Enabling/disabling of tripping on overvoltage
protection
● ●
f
u
Underfrequency protection f
u
Protection function can be enabled/disabled ● ●
Setting range for underfrequency protection f
u
=
f
n
x …
0.9 to 0.999 (in steps of
0.001)
Default value: 0.9
0.9 to 0.999 (in steps of
0.001)
Default value: 0.9
Setting range of the delay time for underfrequen‐
cy protection
3 to 300 s (in steps of 0.01)
Default value: 3 s
3 to 300 s (in steps of 0.01)
Default value: 3 s
Enabling/disabling of tripping on underfrequen‐
cy protection
● ●
f
o
Overfrequency protection f
o
Protection function can be enabled/disabled ● ●
Setting range for overfrequency protection f
o
= f
n
x …
1.001 to 1.1 (in steps of
0.001)
Default value: 1.1
1.001 to 1.1 (in steps of
0.001)
Default value: 1.1
Setting range of the delay time for overfrequency
protection
3 to 300 s (in steps of 0.01)
Default value: 3 s
3 to 300 s (in steps of 0.01)
Default value: 3 s
Enabling/disabling of tripping on overfrequency
protection
● ●
PP Reverse power protection RP
Protection function can be enabled/disabled ● ●
Setting range for reverse power PR = S
n
x … -0.050 … -1.0 (in steps of
0.001)
Default value: -0.1
-0.050 … -1.0 (in steps of
0.001)
Default value: -0.1
Setting range of the delay time for reverse power
protection
0.5 to 100 s (in steps of 0.1)
Default value: 5 s
0.5 to 100 s (in steps of 0.1)
Default value: 5 s
De󹪝nition of direction of power 󹪞ow Bottom → top; top → bottom
Default value: top → bottom
Enabling/disabling of tripping on reverse power ● ●
Description
2.9Electronic trip unit ETU
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
74 Equipment Manual, 10/2023, L1V30499596002-03