Page 32 - ACB-E1.2-E2.2-E4.2-E6.2

x 2
CE Ema
ABB | SA
Continued from the previous page ABB | SACE Emax 2

Summary table Standard Protections
Calculation
Threshold Calculation
ABB ANSI (1) Threshold Time formula t (2)(9) Tolerance t (3)
tolerance (3) t example t (2) t
(10)(11) t
± 10 % with If ≤
Activation for t = 6.75 s with:
L I1 = 0.4…1 In t1 = 3…144 s t = t 6 In
t
(60947-2) 49 step = 0.001 In If in the range step = 1 s (9 t1) / (If / I1) 2 I1 = 0.4 In; t1 = 3 ± 20 % with If
(1.05...1.2) x I1 s; If = 0.8 In
> 6 In
± 10 % with If ≤
L Activation for t =
t
(60255- 49 I1 = 0.4…1 In If in the range t1 = 3…144 s (t1 x a x b) / ((If See the table 6 In
151) step = 0.001 In (1.05...1.2) x I1 step = 1 s / I1) -1) below ± 20 % with If
k
> 6 In
± 7 % with If ≤ The better of
S I2 = 0.6...10 In 6 In t2 = 0.05…0.8 s the two values:
(t = k) (13) 50 TD step = 0.1 In ± 10 % with If > step = 0.01 s t = t2 - ± 10 % or ± 40
t
6 In ms
± 7 % with If ≤ ± 15 % with If ≤
S I2 = 0.6...10 In 6 In t2 = 0.05…0.8 s t = t = 5 s con: 6 In
t
(t = k / I 51 t 2 I2 = 1 In; t2 = 0.8
)
2 (13) step = 0.1 In ± 10 % with If > step = 0.01 s (100 t2) / (If) s; If = 4 In ± 20 % with If
6 In > 6 In
± 7 % with If ≤ The better of
S2 50 TD I5 = 0.6...10 In 6 In t5 = 0,05…0,8 s t = t5 - the two values:
(t = k) (13) step = 0.1 In ± 10 % with If > step = 0.01 s t ± 10 % or ± 40
6 In ms
I3 = 1.5...15 In
I 50 ± 10 % Not adjustable t ≤ 30 ms - -
step = 0.1 In t
t4 = The better of
G 50N TD I4 = 0.1...1 In ± 7 % Instantaneous…1 t = t4 - the two values:
(4)
(t = k) (12)(13) step = 0.001 In s, 0.1...1s t ± 10 % or ± 40
step = 0.05 s ms (8)
G (4) t = 0.32 s with:
t
(t = k / I ) 51N I4 = 0.1...1 In ± 7 % t4 = 0.1…1 s t = 2 I4 = 0.8 In; t4 = ± 15 %
2
t
(12)(13) step = 0.001 In step = 0.05 s 2 / (If / I4) 0.2 s; If = 2 In
I31 = 1.5...15 In
2I 50 ± 10 % Not adjustable t ≤ 30 ms - -
step = 0.1 In t
MCR - I3 = 1.5...15 In ± 10 % 0,04…0,5 s (5) t ≤ 30 ms - -
step = 0.1 In step = 0.01 s t
the better of the
two values:
± 10 % or ± 40
I6 = 2…90 % t6 = 0.5…60 s
IU 46 ± 10 % t = t6 - ms (for a time
step = 1 % step = 0.5 s t
set < 5 s) / ± 100
ms (for a time
set ≥ 5 s)
Continued on the next page

30 | © 2022 ABB | 1SDH001316R1002 - ECN000232533 Protections