Siemens SENTRON 3WA1 - Page 556

Appendix
A.1 Basic settings of the electronic trip unit on delivery
3WA1 air circuit breaker
554 Equipment Manual, 02/2023, 92310000002-06
ETU600 LSI, ETU600 LSIG, ETU600 LSIG Hi-Z
Protective function
Basic setting
S: Directed short-time-delayed short-circuit protection dST (optional)
Direction setting
Forward
Tripping FW
Off
Tripping REV
Off
Current setting I
sd
FW
0.6 x I
n
Current setting I
sd
REV
0.6 x I
n
Tripping time t
sd
FW
0.1 s
Tripping time t
sd
REV
0.1 s
I: Instantaneous short-circuit protection INST
Tripping
On
Current setting I
i
1.5 x I
n
Reverse power protection RP (optional)
Tripping
Off
Setting P
RP
0.05 x P
n
Tripping time t
RP
0.1 s
Maintenance mode DAS+
Current setting I
i DAS+
1.5 x I
n
Current setting I
g DAS+
(LSIG and LSIG HI-Z versions only)
Depending on the size:
• Sizes 1 and 2: 100 A
• Size 3: 400 A
Tripping time t
g DAS+
0 s
Digital input / output
Digital ETU input
Without function
Digital ETU input signal level
Active at HIGH
Digital ETU output
Life contact
Second parameter set (option)
Parameter set switchover
Parameter set A
Enhanced protective functions EPF (optional)
Unbalance, harmonic analysis, voltage, power, frequency,
phase rotation;
For details see Chapter Enhanced protective functions
EPF (Page 118)
Off