L2275
Emax UL
49/132
Doc. N°
Mod.
RH0109002
Apparatus
Scale
Page N°
L
(t=k/I
2
)
"
"
"
#
0.4xIn
≤
I
1
≤
1xIn
3s
≤
t
1
≤
144s ,
± 10%
± 10%, I
f
< 4xIn
step 0.01xIn
step 3s
(1)
ANSI 37.17
± 20%, I
f
>
4xIn
S
(t=k)
#
"
#
"
0.6xIn
≤
I
2
≤
10xIn
Min
(2)
, 0.05s
≤
t
2
≤
0.4s,
± 7%, I
f
< 4xIn
± 10% or± 50ms, I
f
< 4xIn
step 0.1xIn
step 0.01s
± 10%, I
f
>
4xIn
± 15% or± 50ms, I
f
> 4xIn
S
(t=k/I
2
)
#
"
"
#
0.6xIn
≤
I
2
≤
10xIn
0.05s
≤
t
2
≤
0.4s,
± 7%, I
f
< 4xIn
± 15%, I
f
< 4xIn
step 0.1xIn
step 0.01s
± 10%, I
f
>
4xIn ± 20%, I
f
> 4xIn
I
± 10%, I
f
< 4xIn
(t=k)
#
"
"
"
1.5xIn
≤
I
3
≤
15xIn
Instantaneous
± 15%, I
f
>
4xIn
< 25ms
step 0.1xIn
G
(t=k)
#
#
#
"
0.2xIn
≤
I
4
≤
1xIn (3)
0.1s
≤
t
4
≤
0.4s,
± 10%
± 10% or± 50ms, I
f
< 4xIn
step 0.02xIn
step 0.05s
G
(t=k/I
2
)
#
#
"
"
0.2xIn
≤
I
4
≤
1xIn (3)
0.1s
≤
t
4
≤
0.4s,
± 10%
± 20%
step 0.02xIn
step 0.05s
U
(t=k)
#
"
"
"
10%
≤
I
6
≤
90%
0.5s
≤
t
6
≤
60s,
± 10%
± 20%
step 10%
step 0.5s
O T
(temp=k)
"
#
"
"
Can only be set by ABB
Instantaneous
± 1°C
—-
K
(Open1-Open2)
#
"
"
"
0.5xI1
≤
(I
c1,
I
c2
)
≤
1.0xI1
t
c1
≤
t
1
/ 4
± 10%
± 20%
step 0.01xI1
t
c2
≤
t
1
/ 2
K
(Closed1-Open1)
#
"
"
"
0.5xI1
≤
(I
c1,
I
c2
)
≤
1.0xI1
10s
≤
t
c1
≤
120s step 5s
± 10%
± 20%
step 0.01xI1
t
c2
≤
t
1
/ 2
Iinst
"
"
"
"
Can only be set by ABB
Instantaneous
± 5%
—-
Protection
Disabling
Disabling
only TRIP
Zone
Selectivity
Thermal
Memory
Threshold
range
Time
tolerance (4)
Time
range
Threshold
tolerance (4)
The best of the two data
The best of the two data
(1) The minimum value of this trip is 750ms regardless of the type of curve set
(self-protection)
(2) In the case when the trip curve with fixed time (t=k) is selected, apart from those
indicated, it is also possible to set the trip time t2=min.
(3) ABB SACE respects the NEC standard guaranteeing that the maximum value
of ground fault current (I4) selectable does not exceed the value of 1200A.
The range of adjustment the threshold I4 is allowed is automatically decreased,
according to the type of power circuit breaker selected, so that the following
condition is respected: [(I4 x In)
≤
1200A].
(4)
These tolerances are valid with the following hypothesis:
- trip unit self-supplied when running (without start-up)
- two-phase or three-phase power supply
13.15.3
Signals
13.15.3.1 Optic signals
Signaling
Description
Led Vaux
(green)
Presence of Auxiliary power supply
Led
µ
P Fault
(red)
Microprocessor with temporary or permanent fault
Led Warning
(yellow)
• Presence of one or more phases with current values in the 0.83*I1<I<1.05*I1 range (on the NE at 50% the
values are halved);
• Presence, between two or three phases, of unbalance above the value programmed during configuration;
• First temperature threshold T=70°C exceeded;
• Contact wear higher than 80 %
Led Emergency (red)
• Presence of one or more phases under overload with current values of >1.05*I1 (protection L timing) (on the
NE at 50% the values are halved);
• Timing in progress for protection function S;
• Timing in progress for protection function G;
• Second temperature threshold T=85°C exceeded;
• Contact wear at 100 %.
For all cases not covered by the above hypothesis, the following tolerance
values are valid:
Trip threshold
Trip time
L
± 10% (according to ANSI 37.17 standard)
± 20%
S
± 10%
± 20%
I
± 15%
≤
60ms
G
± 15%
± 20%
