Siemens SIPROTEC 7SJ61 - Motor Starting Protection 48

Technical Data
4.9 Motor Starting Protection 48
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
341
4.9 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.STARTUP 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%