Siemens UL 1066 Operating Instructions Manual page 324

WL Circuit Break er
F unction ov er vie w of the electronic tr ip units
Basic functions
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 delay time clas s t R at I 2 t
(seconds)
Se tting range of delay time t R at I 4 t
(seconds)
Thermal memor y
Phase los s sensitivity
N-conductor pro tection
N
F unction can be switched ON/OFF
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/OF F
Se tting range I sd = I n x ...
Se tting range of delay time t sd , f ix ed
S
(seconds)
Switch-selectable sho rt -t ime dela y
shor t-cir cuit p rot ection
( I 2 t dependent function)
Se tting range of time dela y t sd at I 2 t
(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 delay time t g
(seconds)
Switch-selectable
ground fault p rot ection -
( I 2 t / fix ed)
Se tting range delay time t g at I 2 t
ZSI ground function
Note: ETU776 settings via WLBDA, Modbus, or Profibus: 1A steps
1
Via ETU Keypad: Below 1000A: 10A steps
Extended Instantaneous Protection (EIP) allows the WL circuit breaker to be applied at the withstand rating of
2
the circuit breaker with minus 0% tolerance; this means there is no instantaneous override at all. EIP further
enables the circuit breaker to be applied up to the full instantaneous rating of the circuit breaker in systems
where the available fault current exceeds the withstand rating.
Ground Fault Module cannot be removed after installation.
3
Notes:
M = Motor protection setting indicates phase loss sensitivity is enabled. LT pick-up reduced 80% when phase unbalance > 50%. ST = 20 ms
Communications = Setting the parameters of the trip unit via the Breaker Data Adapter, MODBUS, or PROFIBUS
Key pad = Direct input
24 – 9
ETU748
–
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
at
–
–
1.25, 1.5, 2, 2.5,
3, 4, 6, 8, 10, 12
M, 0.1, 0.2, 0.3, 0.4
ed
0.1, 0.2, 0.3, 0.4
per CubicleBUS module
–
– I
3
(field installable module)
O
A, B, C, D, E
A, B, C, D, E
0.1, 0.2, 0.3, 0.4, 0.5
0.1, 0.2, 0.3, 0.4, 0.5
per CubicleBUS module
1600A-10000A: 100A steps
on the trip unit
(via slide switch)
t sd =20ms (M)
(via slide switch)
(via rot ar y coding switch)
= I = EIP 2
i cw
1000A-1600A: 50A steps
Above 10000A, 1000A steps
ETU776
–
40-100% of In (Adjustable in Amps )
2 ... 30 (step: 0.1s)
1 ... 5 (step: 0.1s)
(on/off via key pad
or communications)
(on/off via key pad
or communications)
(via key pad or communications)
0.5 ... 2, OFF
(via key pad or communications)
1.25 ... 0.8 x I cw = max
(step: 10A)
M, 0.08 ... 0.4, OFF (step: 0.001s)
(via key pad or communications)
0.1 ... 0.4 (step: 0.001s)
per CubicleBUS module
(via key pad or communications)
2
1.5 x I ... 0.8 x I = max, OFF= I =EIP
cw
n cs
(field installable module)
O
(via key pad or communications)
A ... E (step: 1A)
A ... E (step: 1A)
0.1 ... 0.5 (step: 0.001s)
0.1 ... 0.5 (step: 0.001s)
per CubicleBUS module
–
O
1
available
not available
optional