24 – 7
WL Circuit Break er
F unction ov er vie w of the electronic tr ip units
Basic F unctions ETU745
Long-time ov ercurrent pro tection
F unction can be switched ON/OFF
–
Se tting range
I R = I n x …
0.4, 0.45, 0.5, 0.55, 0.6,
0.65, 0.7, 0.8, 0.9, 1
Switch-selectable ov erload p rot ection
(
I 2 t or I 4 t dependent function)
Se tting range of
time
dela y
clas s
t R at I
2 t
(seconds)
2, 3.5, 5.5, 8, 10,
14, 17, 21, 25, 30
Se tting range of
t R at I
4 t
(seconds)
1, 2, 3, 4, 5
Thermal memor
(via slide switch)
Phase los s sensitivity
at
tsd=20ms (M)
N-conductor pro tection
F unction can be switched ON/OFF
(via slide switch)
N-conduct or se tting range
I N = I n x
0.5 … 1
Shor t-time dela y ed ov ercurrent pro t ection
F unction can be switched ON/OFF
(via rotary switch)
Se tting range
I sd = I n x …
1.25, 1.5, 2, 2.5,
3, 4, 6, 8, 10, 12
Se tting range of
t sd , fi xe d
(seconds)
0.02 (M), 0.1, 0.2,
0.3, 0.4, OFF
Switch-selectable shor t-time dela yed
shor t-cir cuit p rot ection
(
I 2 t dependent function)
(via rotary coding switch)
Se tting range of
t sd at I
2 t
(seconds)
0.1, 0.2, 0.3, 0.4
Zone Selectiv e Int erlocking (ZSI) function
per CubicleBUS module
Instantaneous ov ercurrent pro tection
F unction can be switched ON/OFF,
Ext ended Instantaneous P rot ection
is enabled when OFF
(via rotary coding switch)
Se tting range
I i = I n x …
1.5, 2.2, 3, 4, 6, 8, 10, 12
0.8 x
I
cw
= max, OFF=
I
cw
=EIP
Ground fault pro tection
O
(field installable module)
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
, B, C, D, E (100… 1200A)
Se tting range of the
I g f or alarm
A,
A,
B, C, D, E (100… 1200A)
Se tting range of the
t g
(seconds)
0.1, 0.2, 0.3, 0.4, 0.5
Switch-selectable
ground fault p rot ection
(
I 2 t / fix ed)
Se tting range
t g at I
2 t
0.1, 0.2, 0.3, 0.4, 0.5
ZSI ground function
per CubicleBUS module
available
– not
available
O
optional
L
N
S
I
G
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-
EIP further enables the cir cuit br eak er to be applied up to t he full instantaneous rating of
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.
1
2
I n
2
1
time
dela y
time
dela y
time
dela y
time
dela y
time
dela y
ride at all.
Содержание UL 1066
Страница 43: ...6 12 7 Reset reclosing lockout 8 Charge closing spring 9 Switch ON Frame size II Frame size III 9X ...
Страница 56: ...7 5 7 2 Frame size II fused ...
Страница 58: ...7 7 ...
Страница 63: ...7 12 8 27 210 0 8 27 210 0 8 27 210 0 3 75 95 2 ...
Страница 64: ...7 13 ...
Страница 65: ...7 14 7 7 Frame size III fuse carriage ...
Страница 66: ...7 15 ...
Страница 69: ...7 18 7 9 External sensor for neutral conductor WLNCT2 ...
Страница 70: ...7 19 WLNCT3 ...
Страница 85: ...9 5 I tripping Ground fault tripping ...
Страница 231: ...15 12 Pre assembling the locking module Installing 0767 1 2 3 4 6 5 ...
Страница 232: ...15 13 1 Socket head cap screw M5 with washer and nut 7 8 Size 4 5 Nm 45 lb in ...
Страница 271: ...19 10 Function check Then Fit back front panel and side cover on the right if it was removed page 23 4 10 ...
Страница 280: ...21 2 Installing the door sealing frame Not for use with fuse carriages Catalog No Door sealing frame WLDSF 1 2 3 NOTICE ...
Страница 289: ...23 7 23 3 3 Installing arc chutes 1 2 6 5 PH 2 0043 02 3 4 5 6 For frame size III 3 PH 2 ...
Страница 298: ...23 16 6 7 8 9 5 2 1 Size 5 mm ...
Страница 333: ......