User Manual

Description
2.4 Electronic trip unit ETU600
3WA Air Circuit Breakers
94 Equipment Manual, 05/2021, 92310000002-03
ETU600 LSI, ETU600 LSIG, ETU600 LSIG Hi-Z
Protective function
Setting range
Settings with rotary switch
L: Long time LT, neutral conductor
Tripping
Can be switched on/off
Current setting IN 3-pole: 0.2 ... 2.0 x In
4-pole: 0.2 x I
n … In max
Current setting I
N PAL
0.7 … 1.0 x I
N
S: delayed short circuit protection ST
Tripping
Can be switched on/off
Current setting I
sd
0.6 x I
n
… 0.8 x I
cw
1.5 / 2 / 2.5 / 3 / 4 / 5 / 6 / 8 / 10 x I
r
Tripping time tsd 0.02 … 0.4 s At I
2
t = OFF:
0.08 / 0.15 / 0.22 / 0.3 / 0.4 s
At I
2
t = ON:
0.1 / 0.2 / 0.3 / 0.4 s
Characteristic ST curve
I
0
t / I
2
t
Reference point IST ref 6 … 12 x Ir
Intermittent acquisition
Can be switched on/off
S: Directional short time dST (optional)
Tripping Can be switched on/off
Current setting I
sd
FW
0.6 x I
n
… 0.8 x I
cw
Current setting I
sd
REV
0.6 x I
n
… 0.8 x I
cw
Tripping time tsd FW 0.05 … 0.4 s
Tripping time t
sd
REV
0.05 … 0.4 s
I: instantaneous short-circuit protection INST
Tripping
Can be switched on/off
Current setting I
i
1.5 x I
n
… 0.8 x I
cs
1.5 / 2 / 3 / 4 / 6 / 8 / 10 / 12 / 15 x I
n
Reverse power protection RP (optional)
Tripping
Can be switched on/off
Setting P
RP
0.05 ... 0.5 x P
n
Tripping time t
RP
0.01 … 25 s
DAS+ maintenance mode
Current setting Ii DAS+ 1.5 … 10 x In
Current setting I
g DAS+
with LSIG GFx option plug
Residual depending on the size
• Size 1 / 2: 100 … 2000 A
• Size 3: 400 … 2000 A
Direct: 15 … 2000 A
Tripping time t
g DAS+
0 … 5 s