Page 32 - Sace Emax 2 Manual Touch Protection breakers

Continued from the previous page ABB | SACE Emax 2

Summary table Standard Protections
Threshold Calculation for- Calculation
ABB ANSI (1) Threshold Time Tolerance t (3)
tolerance (3) mula t (2)(9)(10)(11) example t (2) t
t t
Activation for t = 6.75 s with:
L I1 = 0.4…1 In t1 = 3…144 s t = t ± 10 % with If ≤ 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 > 6 In
(1.05...1.2) x I1 s; If = 0.8 In
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 ± 10 % with If ≤ 6 In
151) step = 0.001 In (1.05...1.2) x I1 step = 1 s I1) -1) below ± 20 % with If > 6 In
k
± 7 % with If ≤ The better of the two
S 50 TD I2 = 0.6...10 In 6 In t2 = 0.05…0.8 s t = t2 - values:
(t = k) (13) step = 0.1 In ± 10 % with If step = 0.01 s t
> 6 In ± 10 % or ± 40 ms
± 7 % with If ≤
S t = 5 s con:
t
(t = k / I 51 I2 = 0.6...10 In 6 In t2 = 0.05…0.8 s t = 2 I2 = 1 In; t2 = 0.8 ± 15 % with If ≤ 6 In
t
)
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 ≤
S2 I5 = 0.6...10 In 6 In t5 = 0,05…0,8 s The better of the two
(t = k) (13) 50 TD step = 0.1 In ± 10 % with If step = 0.01 s t = t5 - values:
t
± 10 % or ± 40 ms
> 6 In
I3 = 1.5...15 In
I 50 ± 10 % Not adjustable t ≤ 30 ms - -
step = 0.1 In t
t4 =
G I4 = 0.1...1 In Instantaneous…1 The better of the two
(4)
(t = k) (12)(13) 50N TD step = 0.001 In ± 7 % s, 0.1...1s t = t4 - values: (8)
t
± 10 % or ± 40 ms
step = 0.05 s
G I4 = 0.1...1 In t4 = 0.1…1 s t = t = 0.32 s with:
(4)
t
(t = k / I ) 51N ± 7 % t 2 I4 = 0.8 In; t4 = ± 15 %
2
(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
I3 = 1.5...15 In 40…500 ms (5)
MCR - ± 10 % t ≤ 30 ms - -
step = 0.1 In step = 0.01 s t
the better of the two
values:
I6 = 2…90 % t6 = 0.5…60 s ± 10 % or ± 40 ms
IU 46 ± 10 % t = t6 -
step = 1 % step = 0.5 s t (for a time set < 5 s) /
± 100 ms (for a time
set ≥ 5 s)
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30 | © 2019 ABB | 1SDH001316R1002 - ECN000086501 - Rev. A Protections | 2 - Standard Protections