Communication-capable Circuit Breakers
2/4
WL Circuit Breaker
Basic Functions
ETU725
ETU727
ETU745
Parameter sets
Selectable between
parameter set A and B
–
–
–
LCD
LCD, alphanumeric (4-line)
–
–
O
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
–
✔
✔
(only with ground fault module)
G alarm
–
–
✔
(only with ground fault module)
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
–
–
✔
(only with ground fault module)
Ground fault alarm
–
–
✔
(only with ground fault module)
Auxiliary relay
–
–
✔
ETU error
–
–
✔
✔
available
–
not available
O
optional
from … to
step
from … to
step
0 … 1
0.1
1000 … 1600
50
1 … 100
1
1600 … 10000
100
100 … 500
5
10000 … max
1000
500 … 1000
10
Step for Settings via Communications or ETU Key Pad
Setting range of the I
g
Frame Size II
Frame Size III
A
100 A
400 A
B
300 A
600 A
C
600 A
800 A
D
900 A
1000 A
E
1200 A
1200 A
WL PROFIBUS Communication and Electronic Accessories • July 2004