User Manual

Description
2.4 Electronic trip unit ETU600
3WA Air Circuit Breakers
Equipment Manual, 05/2021, 92310000002-03
97
2.4.5.2 Enhanced protective functions EPF parameters
In addition to the two sets of protection parameters A and B, enhanced protective functions
are optionally available for the ETU600 electronic trip unit.
Parameters Setting range Condition Basic
setting
Unbalance
Current unbalance
–
1)
–
Can be switched on/off
–
–
Off
Setting
5 … 50%
–
50%
Tripping time
0 … 15 s
–
0 s
Voltage unbalance
–
2)
–
Protective function can be
enabled/disabled
– – Off
Setting
5 … 50%
–
50%
Tripping time
0 … 15 s
–
0 s
Harmonic analysis
THD current
–
1)
–
Can be switched on/off
–
–
Off
Setting
3 … 50%
–
50%
Tripping time
5 … 15 s
–
5 s
THD voltage
–
2)
–
Can be switched on/off – – Off
Setting
3 … 50%
–
50%
Tripping time
5 … 15 s
–
5 s
Voltage
Undervoltage U
LL
–
–
–
Can be switched on/off
–
–
Off
Setting
100 … 1100 V
–
100 V
Tripping time
0 … 15 s
–
0 s
Overvoltage U
LL
–
–
–
Can be switched on/off – – Off
Setting
200 … 1200 V
–
1200 V
Tripping time
0 … 15 s
–
0 s
Undervoltage ULN – – –
Can be switched on/off
–
–
Off
Setting
60 ... 600 V
–
100 V
Tripping time 0 … 15 s – 5 s
Overvoltage U
LN
–
–
–
Can be switched on/off
–
–
Off
Setting
120 ... 690 V
–
690 V
Tripping time
0 … 15 s
–
0 s