Siemens siprotec 7SJ63 - Page 471

Technical Data
10-257SJ63 Manual
C53000-G1140-C120-1
Reset Time Charac-
teristics As Per
ANSI
Dropout IEC and ANSI (without Disk Emulation) approx. 1.05 · I
2p
Setting Value, which
is approx. [0.95 · pickup threshold]
ANSI with Disk–Emulation approx. 0.90 · I
2p
Setting Value
Tolerances Reset Current I
2p
2% of set value or 50 mA
1
)
Time for 0.05≤ I
2
/I
2p
≤ 0.90 5% of reference (calculated) value + 2 %
current tolerance, minimum 30 ms
Influencing Vari-
ables for Pickup
Currents
Power supply DC voltage in range
0.8 ≤ V
PS
/ V
PS nominal
≤ 1.15 1%
Temperature in range
23º F ≤ ϑ
amb
≤ 131º F 0.06% /10º F
Frequency in range
0.95 ≤ f/f
N
≤ 1.05 1%
Harmonic currents
– Up to 10 % 3
rd
Harmonic 1 %
– Up to 10 % 5
th
Harmonic 1 %
1
) For I
N
= 1 A, divide all limits and increments by 5.
t
Reset
8.8
I
2
I
2p
⁄()
2.0938
1
–
---------------------------------------------



D
I2p
⋅
=
$16,,19(56(
t
Reset
0.97
I
2
I
2p
⁄()
2
1
–
---------------------------------



D
I2p
⋅
=
$16,02'(5$7(/<
t
Reset
5.82
I
2
I
2p
⁄()
2
1
–
---------------------------------



D
I2p
⋅
=
$16,(;75(0(/<
Where:
t
Reset
trip time in seconds
D
I2p
setting value of the time multiplier
I
2
negative sequence currents
I
2p
setting value of the pickup current
for 0.05 < (I
2
/I
2p
) ≤ 0.90
t
Reset
4.32
I
2
I
2p
⁄()
2
1
–
---------------------------------



D
I2p
⋅
=
$16,9(5<,19(56(
,19(56(
,19(56(
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