Technical Data
4.11 Motor Starting Protection 48
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
506
4.11
Motor Starting Protection 48
Setting Ranges / Increments
Trip Curve
Dropout Ratio
Tolerances
Influencing Variables
Startup current of the
motor
I
STARTUP
for
I
Nom
= 1 A 0.50 A to 16.00 A
Increment
0.01 A
for
I
Nom
= 5 A 2.50 A to 80.00 A
Pickup threshold
I
MOTOR START
for
I
Nom
= 1 A 0.40 A to 10.0 A
Increment
0.01 A
for
I
Nom
= 5 A 2.00 A to 50.00 A
Permissible startup time T
Max.STARTUP
1.0 s to 180.0 s
Increments 0.1 s
Permissible locked rotor time T
LOCKED ROTOR
0.5 s to 120.0 s or
∞
(disabled)
Increments 0.1 s
Maximum startup time with warm motor
T
Max.STARTUP W
0.5 s to 180.0 s or
∞
(disabled)
Increments 0.1 s
Maximum startup time with cold motor T
Max.STAR-
TUP C
0 % to 80 % or
∞
(disabled)
Increments 1 %
Dropout ratio
Approx. 0.95
Pickup Threshold
2 % of set value or 10 mA for
I
Nom
= 1 A or 50 mA for
I
Nom
= 5 A
Time Delay
5 % or 30 ms
Power supply direct voltage in range 0.8
≤
V
PS
/V
PSNom
≤
1.15
1 %
Temperature in range 23.00 °F (-5 °C)
≤
Θ
amb
≤
131.00 °F (55 °C)
0.5 %/10 K
Frequency in range f
Nom
±
5 Hz
1 %
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
1 %
1 %
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