Siemens SIPROTEC 4 7SJ61 - Motor Starting Time Supervision

Motor Starting Time Supervision
Setting Ranges / Increments
Startup current of the motor
Ι
STARTUP
for Ι
Nom
= 1 A
0.50 A to 16.00 A Increments 0.01 A
for Ι
Nom
= 5 A
2.50 A to 80.00 A
Pickup threshold Ι
MOTOR START
for Ι
Nom
= 1 A
0.40 A to 10.0 A Increments 0.01 A
for Ι
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 180.0 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.STARTUP K
0 % to 80 % or ∞ (disabled) Increments 1 %
Trip Curve
Dropout Ratio
Dropout ratio
approx. 0.95
Tolerances
Pickup Threshold
2 % of setting value or 10 mA for Ι
Nom
= 1 A or 50 mA for Ι
Nom
= 5 A
Time Delay 5 % or 30 ms
Influencing Variables
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 25 Hz to 70 Hz 1 %
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
1 %
1 %
4.9
Technical Data
4.9 Motor Starting Time Supervision
312 SIPROTEC 4, 7SJ61, Manual
C53000-G1140-C210-6, Edition 05.2016