ABB SACE Emax E1.2, Operating Instructions For The Design Engineer

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ABB | SACE Emax 2
Ekip Touch protection trip unit | 9 - Touch protections 73 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
Summary table of basic protections
ABB ANSI (1) Threshold
Threshold
tolerance
(3)
Time
Calculation
formula t
t
(2)
Calculation
example t
t
(2)
Tolerance t
t
(3)
L
(60947-2)
49
I1 = 0.4…1 In
step = 0.001 In Activation for If in the
range (1.05...1.2) x I1 t1 = 3…144 s
step = 1 s t
t
= (9 t1) / (If
/ I1)
2
t
t
= 6.75 s with:
I1 = 0.4 In; t1 = 3 s;
If = 0.8 In
± 10 % with If
≤
6 In
± 20 % with If >
6 In
L
(60255-151)
(9)
49
I1 = 0.4…1 In
step = 0.001 In Activation for If in the
range (1.05...1.2) x I1 t1 = 3…144 s
step = 1 s t
t
= (t1 x a x b)
/ ((If / I1)
k
-1)
See the table below
± 10 % with If
≤
6 In
± 20 % with If >
6 In
S
(t = k)
50 TD
I2 = 0.6...10 In
step = 0.1 In ± 7 % with If
≤
6 In
± 10 % with If > 6 In
t2 = 0.05…0.8 s
step = 0.01 s
t
t
= t2 -
The better of the
two values:
± 10 % or ± 40
ms
S
(t = k / I
2
)
51
I2 = 0.6...10 In
step = 0.1 In ± 7 % with If
≤
6 In
± 10 % with If > 6 In
t2 = 0.05…0.8 s
step = 0.01 s t
t
=
(100 t2) / (If)
2
t
t
= 5 s con:
I2 = 1 In; t2 = 0.8 s;
If = 4 In
± 15 % with If
≤
6 In
± 20 % with If >
6 In
I 50
I3 = 1.5...15 In
step = 0.1 In
± 10 % Not adjustable t
t
≤
30 ms - -
G
(t = k)
50N TD
I4
(4)
= 0.1...1 In
step = 0.001 In
± 7 %
t4 =
Instantaneous…1 s,
0.1...1s
step = 0.05 s
t
t
= t4 -
The better of the
two values:
± 10 % or ± 40
ms
(8)
G
(t = k / I
2
)
51N
I4 (4) = 0.1...1 In
step = 0.001 In
± 7 %
t4 = 0.1…1 s
step = 0.05 s t
t
=
2 / (If / I4)
2
t
t
= 0.32 s with:
I4 = 0.8 In; t4 = 0.2
s; If = 2 In ± 15 %
2I 50
I31 = 1.5...15 In
step = 0.1 In
± 10 % Not adjustable t
t
≤ 30 ms - -
MCR -
I3 = 1.5...15 In
step = 0.1 In
± 10 %
40…500 ms
(5)
step = 0.01 s
t
t
≤
30 ms - -
IU 46
I6 = 2…90 %
step = 1 %
± 10 %
t6 = 0.5…60 s
step = 0.5 s
t
t
= t6 -
the better of the
two values:
± 10 % or ± 40
ms (for a time set
< 5 s) / ± 100 ms
(for a time set
≥
5 s)
Iinst - Defined by ABB - Instantaneous - - -
Current
thresholds
(1 and 2)
-
50…100 % I1
step = 1 %
- - - - -
Current
thresholds
(Iw1 and Iw2)
-
0.1…10 In
step = 0.01 In
- - - - -
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