Siemens SIPROTEC 7SJ62 Instruction Manual page 433

Reset Time Charac-
teristic As Per ANSI
Dropout
Tolerances
Influencing Vari-
ables
7SJ62 Manual
C53000-G1140-C121-1
$16, ,19(56(
$16, 6+257 ,19(56(
$16, /21* ,19(56(
$16, 02'(5$7(/< ,19
$16, 9(5< ,19(56(
$16, (;75(0(/< ,19
$16, '(),1,7( ,19
) ≤ 0.90
/
for 0.05 < (I I
p
ANSI without Disk–Emulation
Dropout/Pickup (ratio)
ANSI with Disk Emulation
Dropout/Pickup (ratio)
Dropout Threshold I , I
p Ep
Dropout Time for 0.05≤ I/I
Power Supply Direct Voltage in Range
0.8 ≤ V ≤ 1.15
/ V
PS PS nominal
Temperature in Range
23º F ≤ ϑ ≤ 131º F
amb
Frequency in Range
0.95 ≤ f/f ≤ 1.05
N
1
) For I = 1 A, divide all limits and increments by 5.
N
t
=
Reset
t =
Reset
t =
Reset
t
=
Reset
t
=
Reset
t
=
Reset
t
=
Reset
For all Characteristics
t = Reset time in seconds
RESET
D = Setting value of the time multiplier
= Fault Current
I
I = Setting value of the pickup current
p
approx. [1.05 · I
corresponds to approx. [0.95·pickup
threshold]
approx. [0.90 · I
2 % of setting value or 50 mA
≤ 0.90
5 % of reference (calculated) value + 2 %
p
current tolerance, respectively 30 ms
1 %
0.06% /10º F
1 %, referring to reference time
Technical Data
 
8.8
⋅
 
[s]
D
-------------------------------------- -
 2.0938 
( ⁄ )
I I 1
–
p
 
0.831
⋅
 
[s]
-------------------------------------- - D
 1.2969 
( ⁄ )
I I – 1
p
 
12.9
⋅
 
[s]
-------------------------- - D
 1 
( ⁄ )
I I – 1
p
 
0.97
⋅
 
[s]
D
-------------------------- -
 2 
( ⁄ )
I I 1
–
p
 
4.32
⋅
 
[s]
D
-------------------------- -
 2 
( ⁄ )
I I 1
–
p
 
5.82
⋅
 
[s]
-------------------------- - D
 2 
( ⁄ )
I I – 1
p
 
1.03940
⋅
 
[s]
D
-------------------------------------- -
 1.5625 
( ⁄ )
I I 1
–
p
setting value] for I
p
setting value]
p
1
)
/I >0.3,
p N
10-15