Siemens SENTRON 3WL - Page 32

3WL Air Circuit Breakers
3WL Air Circuit Breakers/Non-Automatic Air Circuit Breakers up to 6300 A (AC)
General data
32
Siemens · 2009
For the setting range of the operating current I
g
see page 33.
Protection functions ETU15B ETU25B ETU27B
Parameterization by
D D D & S
Functional overview of the solid-state release system
L
Overload protection
Function can be switched on/off
✓
--
✓
--
✓
--
Setting range
I
R
= I
n
× ... 0.5-0.55-0.6-0.65-0.7-
0.75-0.8-0.85-0.9-1
0.4-0.45-0.5-0.55-0.6-
0.65-0.7-0.8-0.9-1
0.4-0.45-0.5-0.55-0.6-
0.65-0.7-0.8-0.9-1
Switchable overload protection
(
I
2
t- or I
4
t-dependent function)
-- -- --
Setting range for time-lag class t
R
at I
2
t 10 s fixed 10 s fixed 10 s fixed
Setting range for time-lag class t
R
at I
4
t -- -- --
Thermal image can be switched on/off -- -- --
Phase failure sensitivity -- at t
sd
= 20 ms (M) at t
sd
= 20 ms (M)
N
Neutral conductor protection -- -- ✓
Function can be switched on/off -- -- ✓
N conductor setting range I
N
= I
n
× ... -- -- 1
S
Short-time delayed short-circuit protection -- ✓✓
Function can be switched on/off -- -- --
Setting range I
sd
= I
n
× ... -- 1.25-1.5-2-2.5-3-4-6-8-10-12 1.25-1.5-2-2.5-3-4-6-8-10-12
Setting range for delay time t
sd
-- 0-M-100-200-300-400 ms 0-M-100-200-300-400 ms
Switchable short-time delayed short-circuit protection
(I
2
t-dependent function)
-- -- --
Setting range for delay time t
sd
at I
2
t -- -- --
Zone Selective Interlocking function -- -- --
I
Instantaneous short-circuit protection ✓✓ ✓
Function can be switched on/off -- -- --
Setting range I
i
= I
n
× ... 2-3-4-5-6-7-8 Fixed for I
i
≥ 20 × I
n
, max. 50
kA
Fixed for I
i
≥ 20 × I
n
, max. 50
kA
G
Ground-fault protection -- -- ✓ Fixed mounted
Tripping and alarm function -- -- --
Tripping function can be switched on/off -- -- ✓
Alarm function can be switched on/off -- -- --
Detection of the ground-fault current through summation
current formation with internal or external neutral con-
ductor transformer
-- -- ✓
Detection of ground-fault current through external
current transformer
-- -- --
Setting range of the operating current I
g
for release -- -- A-B-C-D-E
Setting range of the operating current
I
g
for alarm -- -- --
Setting range of the delay time t
g
-- -- 100-200-300-400-500 ms
Switchable ground-fault protection characteristic
curve (
I
2
t-dependent function)
-- -- --
Setting range for delay time t
g
at I
2
t -- -- --
Zone Selective Interlocking ground-fault protect. func. -- -- --
Parameter set switchover
Switchable between parameter set A and B -- -- --
LCD
Alphanumeric LCD (4-line) -- -- --
Graphical LCD (24 V, ext. power supply required) -- -- --
Communication
CubicleBUS integrated -- -- --
Communication-capable through PROFIBUS DP -- -- --
Measurement function
Measurement-function capable with measurement
function Plus
-- -- --
LED display
Solid-state release active ✓ ✓ ✓
Alarm ✓ ✓ ✓
ETU fault ✓ ✓ ✓
L-release -- ✓✓
S-release -- ✓✓
I-release -- ✓ ✓
N-release -- -- ✓
G-release -- -- ✓
G-alarm -- -- --
Release through extended protection function -- -- --
Communication -- -- --
Signals from signal switches with external CubicleBUS modules (relays)
Overload warning -- -- --
Load shedding, load receiving -- -- --
Leading signal overload trip 200 ms -- -- --
Temperature alarm -- -- --
Phase unbalance -- -- --
Instantaneous short-circuit release -- -- --
Short-time delayed short-circuit release -- -- --
Overload trip -- -- --
Neutral conductor release -- -- --
Ground-fault protection release -- -- --
Ground-fault alarm -- -- --
Auxiliary relay -- -- --
ETU fault -- -- --
R
N S E 0 _ 0 0 8 8 8 b
R
s d
s d
i
N S E 0 _ 0 0 8 8 9 a
g
g
NSE00890
NSE00891
Delay time figures given in ms. ✓ Available
M = Motor protection, corresponds to 20 ms. -- Not available
D = Rotary coding switch
❑ Optional
D & S = Rotary coding and slide switch
K = Communication
M/K = Menu/communication