Siemens Argus 7SR21 - Operate and Reset Time (46 IT)

7SR21 & 7SR22 Performance Specification
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Operate and Reset Level (46IT)
Attribute Value
I
op
Operate level
105 % Is, ± 4 % or ± 1% In
Reset level
³ 95 % I
op
Repeatability
± 1 %
Variation
-10 °C to +55 °C
£ 5 %
f
nom
- 3 Hz to f
nom
+ 2 Hz
£ 5 %
2.7.5 Operate and Reset Time (46IT)
Attribute Value
Starter operate time (³ 2xIs) 35 ms, ± 10 ms
t
op
Operate time
char = IEC-NI,
IEC-VI,
IEC-EI,
IEC-LTI
[ ]
Tm
K
t
Is
I
op
´
-
=
1
a
, ± 5 % or ± 50 ms,
for char = IEC-NI : K = 0.14, a = 0.02
IEC-VI : K = 13.5, a = 1.0
IEC-EI : K = 80.0, a = 2.0
IEC-LTI : K = 120.0, a = 1.0
char = ANSI-MI,
ANSI-VI,
ANSI-EI
[ ]
TmB
A
t
P
Is
I
op
´
ú
ú
û
ù
ê
ê
ë
é
+
-
=
1
, ± 5 % or ± 50 ms,
for char = ANSI-MI : A = 0.0515, B = 0.114, P = 0.02
ANSI-VI : A = 19.61, B = 0.491, P = 2.0
ANSI-EI : A = 28.2, B = 0.1217, P = 2.0
char = DTL
t
d
, ± 1 % or ± 20 ms
Reset time
ANSI DECAYING
[ ]
Tm
R
t
Is
I
res
´
-
=
1
2
, ± 5 % or ± 50 ms,
for char = ANSI-MI : R = 4.85
ANSI-VI : R = 21.6
ANSI-EI : R = 29.1
t
res t
res
, ± 1 % or ± 20 ms
Repeatability
± 1 % or ± 20 ms
Overshoot time < 40 ms
Disengaging time < 60 ms