ABB | SACE Emax 2
122 | © 2013
ABB |
1SDH001000R0002 - L7804
Ekip Touch protection release | 13 - G Hi-Touch protections
Summary table of G Hi-Touch protections
ABB
ANSI
(7)
Threshold
Tolerance
threshold
Tripping time
Calculation
formula
t
t
(1)
Tolerance t
t
(2)
S2(V)
(Step)
51V
I21 = 0.6...10 In; Step = 0.1 In
Ul2 = 0.2…1 Un; Step = 0.01 Un
Ks2 = 0.1…1; Step = 0.01
± 10 %
t21 = 0.05…30 s
Step = 0.01 s
t
t
= t21
The better of the two
values:
± 10% or ± 40 ms
S2(V)
(Linear)
51V
I21 = 0.6...10 In; Step = 0.1 In
Ul2 = 0.2…1 Un; Step = 0.01 Un
Uh2 = 0.2…1 Un; Step = 0.01 Un
Ks2 = 0.1…1; Step = 0.01
± 10 %
t21 = 0.05…30 s
Step = 0.01 s
t
t
= t21
(3)
The better of the two
values:
± 10% or ± 40 ms
RQ2
(4)
40/32R
Q24 = -1…-0.1 Sn; Step = 0.001 Sn
Q25 = -1…-0.1 Sn; Step = 0.001 Sn
Kq = -2…2; Step = 0.01;
Kq2 = -2…2; Step = 0.01
± 10 %
t24 = 0.5…100s
Step = 0.1 s
t
t
= t24
The better of the two
values:
± 10% or ± 40 ms
ROCOF
81R
f28 = 0.4…10 Hz / s
Step = 0.2 Hz / s
± 10 %
t28 = 0.15...10 s
(5)
Step = 0.1 s
t
t
= t28
The better of the two
values:
± 10% or ± 40 ms
Notes
(1)
The calculation of t
t
is valid for values that have exceeded the activation threshold of the protection.
(2)
Valid tolerances with release energized in service conditions or with the auxiliary, tripping time = 100 ms, temperature and currents within operating
limits. If the conditions are not guaranteed, the tolerance of the tripping time becomes ± 20%.
(3)
The tripping threshold of the current for voltage values between Ul2 and Uh2 is calculated by performing the linear interpolation between the
thresholds Uh2 and I21 (first point on the line) and Ul2 and Ks2 * I20 (second point on the line). I
threshold
= [(I21 * Ks2 *I20) / (Uh2 * Ul2)] / (U
measured
*
Uh2) + I21.
(5)
The power of the activation threshold of the protection RQ2 is calculated by the intersection of the 2 straight lines composed of Q24 and Kq (P
th-
reshold
= Q
measured
* Kq + Q24) and from Q25 and Kq2 (P
threshold
= Q
measured
* Kq2 + Q25). If constants Kq and Kq2 are set to 0, the higher threshold
applies (considering that the values are negative, the applicable threshold is the one nearest to 0).
(6)
The parameter f28 limits the selectable minimum value of t28 as follows: 0.4 s (0.4
≤
f28 < 1 Hz / s); 0.25 s (1.2 < f28 < 5 Hz / s); 0.15 s (f28
≥
5.2 Hz / s).
(7) ANSI / IEEE C37-2 encoding.
