Siemens UL 1066 Operating Instructions Manual page 322

WL Circuit Break er
F unction ov er vie w of the electronic tr ip units
Basic F unctions
Long-time ov ercurrent pro tection
F unction can be switched ON/OFF
Se tting range I R = I n x ...
Switch-selectable ov erload p rot ection
I n
( I 2 t or I 4 t dependent function)
L
Se tting range of
(seconds)
Se tting range of
(seconds)
Thermal memor
Phase los s sensitivity
N-conductor pro tection
F unction can be switched ON/OFF
N
N-conduct or se tting range I N = I n x
Shor t-time dela y ed ov ercurrent pro t ection
F unction can be switched ON/OFF
Se tting range I sd = I n x ...
Se tting range of
S (seconds)
Switch-selectable shor t-time dela yed
shor t-cir cuit p rot ection
( I 2 t dependent function)
Se tting range of
(seconds)
Zone Selectiv e Int erlocking (ZSI) function
Instantaneous ov ercurrent pro tection
F unction can be switched ON/OFF,
Ext ended Instantaneous P rot ection
I
is enabled when OFF
Se tting range I i = I n x ...
Ground fault pro tection
Tr ip and alarm function
De t ection of the ground fault curr ent
by r esidual summing me thod
De t ection of the ground fault curr ent
by dir ect summing me thod
Se tting range of the I g f or trip
G
Se tting range of the I g f or alarm
Se tting range of the
(seconds)
Switch-selectable
ground fault p rot ection
( I 2 t / fix ed)
Se tting range
ZSI ground function
1
Ext ended Instantaneous P rot ection (EIP) allows the WL circuit-br eak er to be applied at the withstand
rating of the circuit breaker with minus 0% t olerance; this means that there is no instantaneous over-
ride at all.
the circuit breaker on systems wher e the av ailable fault curr ent ex ceeds the withstand rating.
Gr ound F ault Module canno t be r em ov ed af t er installation.
2
24 – 7
clas s t R at I 2 t
dela y time
t R at I 4 t
dela y time
dela y time t sd , fi xe d
t sd at I 2 t
dela y time
2
dela y time t g
t g at I 2 t
dela y time
EIP further enables the cir cuit br eak er to be applied up to t he full instantaneous rating of
ETU745
–
0.4, 0.45, 0.5, 0.55, 0.6,
0.65, 0.7, 0.8, 0.9, 1
2, 3.5, 5.5, 8, 10,
14, 17, 21, 25, 30
1, 2, 3, 4, 5
(via slide switch)
at t sd =20ms (M)
(via slide switch)
0.5 ... 1
(via rotary switch)
1.25, 1.5, 2, 2.5,
3, 4, 6, 8, 10, 12
0.02 (M), 0.1, 0.2,
0.3, 0.4, OFF
(via rotary coding switch)
0.1, 0.2, 0.3, 0.4
per CubicleBUS module
(via rotary coding switch)
1.5, 2.2, 3, 4, 6, 8, 10, 12
1
0.8 x I = max, OFF= I =EIP
cw cw
(field installable module)
O
A, , B, C, D, E (100... 1200A)
A, B, C, D, E (100... 1200A)
0.1, 0.2, 0.3, 0.4, 0.5
0.1, 0.2, 0.3, 0.4, 0.5
per CubicleBUS module
available
– not available
optional
O