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Basic Functions
Parameter sets
Selectable between
parameter set A and B
LCD
LCD, alphanumeric (4-line)
LCD, graphic
Communication
CubicleBUS integrated
Communication capability via
PROFIBUS
Metering function
Metering function capability with
Metering Function or
Metering Function PLUS
Display by LED
Trip unit active
Alarm
ETU error
L trip
S trip
I trip
N trip
G trip
G alarm
Tripped by extended protection or
protective relay function
Communication
Signal contacts with external CubicleBUS modules
(Opto or relay)
Overcurrent warning
Load shedding ON/OFF
Early signal of long-time trip (200 ms)
Temperature alarm
Phase unbalance
Instantaneous trip
Short-time trip
Long-time trip
Neutral conductor trip
Ground fault protection trip
Ground fault alarm
Auxiliary relay
ETU error
Step for Settings via Communications or ETU Key Pad
from ... to
step
from ... to
0 ... 1
0.1
1000 ... 1600
1 ... 100
1
1600 ... 10000
100 ... 500
5
10000 ... max
500 ... 1000
10
WL PROFIBUS Communication and Electronic Accessories • July 2004
Communication-capable Circuit Breakers
ETU725
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Setting range of the I
step
Frame Size II
50
A
100 A
100
B
300 A
1000
C
600 A
D
900 A
E
1200 A
WL Circuit Breaker
ETU727
ETU745
–
–
–
O
–
–
–
–
–
(only with ground fault module)
–
(only with ground fault module)
–
–
–
–
–
–
–
–
–
–
–
–
(only with ground fault module)
–
(only with ground fault module)
–
–
g
Frame Size III
400 A
600 A
800 A
1000 A
1200 A
available
–
not available
optional
O
2/4
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