Reference (46It); Operate And Reset Level (46It); Operate And Reset Time (46It) - Siemens 7SR224 Technical Manual

2.3.4

Reference (46IT)

Parameter
char Characteristic setting
Tm Time Multiplier setting
I Setting
s
Applied Current (for operate time)
I
IDMTL
t Delay setting
d
t Reset setting
res
2.3.5

Operate and Reset Level (46IT)

Attribute
I Operate level
op
Reset level
Repeatability
-10 °C to +55 °C
Variation
f
nom
2.3.6

Operate and Reset Time (46IT)

Attribute
Starter operate time (≥ 2xIs)
char = IEC-NI,
t Operate time
op
char = ANSI-MI,
char = DTL
ANSI DECAYING
Reset time
t
res
Repeatability
Overshoot time
Disengaging time
©2010 Siemens Protection Devices Limited
Value
IEC-NI, -VI, -EI, -LTI; ANSI-MI, -VI, -EI; DTL
0.025, 0.050 ... 1.6
0.05, 0.06... 2.5xIn
2 to 20 x Is
0, 0.01... 20 s
ANSI DECAYING, 0, 1... 60 s
Value
105 % Is, ± 4 % or ± 1% In
≥ 95 % I
± 1 %
≤ 5 %
+ 2 Hz ≤ 5 %
- 3 Hz to f
nom
Value
35 ms, ± 10ms
=
t
op
IEC-VI,
for char =
IEC-EI,
IEC-LTI
=
t
op
ANSI-VI,
ANSI-EI
for char = ANSI-MI : A = 0.0515, B = 0.114, P = 0.02
, ± 1 % or ± 20ms
t
d
=
t
res
for char = ANSI-MI : R = 4.85
, ± 1 % or ± 20ms
t
res
± 1 % or ± 20ms
< 40 ms
< 60 ms
7SR224 Argus Performance Specification
op
K
×
, ± 5 % absolute or ± 50 ms,
[ ] Tm
α
−
I
1
Is
IEC-NI : K = 0.14, α = 0.02
IEC-VI : K = 13.5, α = 1.0
IEC-EI : K = 80.0, α = 2.0
IEC-LTI : K = 120.0, α = 1.0
⎡ ⎤
A
⎢ ⎥
+ ×
, ± 5 % absolute or ± 50 ms,
B Tm
[ ]
⎢ ⎥
P
−
I
1
⎣ ⎦
Is
ANSI-VI : A = 19.61, B = 0.491, P = 2.0
ANSI-EI : A = 28.2,
R
×
, ± 5 % absolute or ± 50 ms,
Tm
[ ]
2 −
I
1
Is
ANSI-VI : R = 21.6
ANSI-EI : R = 29.1
B = 0.1217, P = 2.0
Chapter 3 Page 19 of 49