ABB | SACE Tmax XT
Protections | 17 - Performance table
87 | © 2020 ABB | 1SDH001821A1002 - ECN000135670
17 - Performance table
General notes:
• The performance values given in the next table are valid with Δ 100 ms trip time, temperature and signals
within the operating limits; failure to comply with these limitations could lead to an increase in the tolerances.
• Ekip Touch sends the TRIP command if the signal read exceeds the threshold for longer than the set time
(or the time resulting from the calculation formula)
• With an inverse time-delay trip curve, the calculation refers to a signal with a constant value throughout
the timing: variation of the alarm signal causes a different trip time
• The additional notes are given after all the tables
Standard Protections
Protection
[ANSI code]
Trip time t
t
(1)
Trip threshold
tolerance
(3)
Trip time tolerance
L [49]
(with curve t = k / I
2
)
Activation for If within
range: (1.05 to 1.2)
x I1
with If
≤
6 In: ± 10 % / with If > 6 In:
± 20 %
(with curves 60255-151)
S [50TD / 51]
t
t
= t2 ( with curve t = k )
with If
≤
6 In: ± 7 % /
with If > 6 In: ± 10 %
The best between ± 10% and 40
ms
(with curve t = k / I
2
)
with If
≤
6 In: ± 15 % / with If > 6 In:
± 20 %
S2 [50TD]
t
t
= t5
with If
≤
6 In: ± 7 % /
with If > 6 In: ± 10 %
The best between ± 10% and 40
ms
I [50]
t
t
≤
30 ms
± 10 %
--
G [50N TD / 51N]
t
t
= t4 ( with curve t = k )
± 7 %
The best between ± 10% and 40
ms
(2)
(with curve t = k / I
2
)
± 15 %
MCR
t
t
≤
30 ms
± 10 %
--
2I [50]
(10)
± 10 %
--
IU [46]
t
t
= t6
± 10 %
with t6
≥
5 s: ± 100 ms / with t6 <
5 s the best between ± 10 % and
± 40 ms
Startup
Protection
[ANSI code]
Trip time t
t
Trip threshold
tolerance
(3)
Trip time tolerance
S StartUp
t
t
= t2 startup
with If
≤
6 In: ± 7 % /
with If > 6 In: ± 10 %
The best between ± 10% and 40 ms
I StartUp
t
t
≤
30 ms
± 10 %
--
G StartUp
t
t
= t4 startup
± 7 %
The best between ± 10% and 40 ms
S2 StartUp
t
t
= t5 startup
with If
≤
6 In: ± 7 % /
with If > 6 In: ± 10 %
The best between ± 10% and 40 ms
