Siemens SENTRON 3WA1 - Page 121

Description
2.5 Electronic trip unit ETU600
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
119
Parameters
Setting range
Condition
Power
Forward power
--
4)
Can be switched on/off
--
--
Setting
1 … 12000 kW
--
Tripping time
0 … 15 s
--
Reverse power
--
4)
Can be switched on/off
--
--
Setting
1 … 12000 kW
--
Tripping time
0 … 15 s
--
Frequency
Underfrequency
--
3)
Can be switched on/off
--
--
Setting
0.5 … 10 Hz
5)
--
Tripping time
0 … 15 s
--
Overfrequency
--
3)
Can be switched on/off
--
--
Setting
0.5 … 10 Hz
5)
--
Tripping time
0 … 15 s
--
Phase rotation
Phase rotation
--
3)
Can be switched on/off
--
--
Tripping time
0 s
--
1)
ANSI definition: Ratio of the greatest difference of the phases to the mean value of the phases
IEC definition: Ratio of the greatest difference of the phase to the phase with the highest load.
2)
Max. (I
L1
, I
L2
, I
L3
) ≥ 100 A
3)
Max. (U
L1L2
, U
L2L3
, U
L3L1
) >50 V
4)
I
Lx
≥ 100 A und U
LxN
>30 V
5)
The setting is the deviation from parameterized rated frequency f
n