Motor Starting Protection 48 - Siemens SIPROTEC 7SJ61 Manual

4.9

Motor Starting Protection 48

Setting Ranges / Increments
Startup current of the
motor I
STARTUP
Pickup threshold I
Permissible startup time T
Permissible locked rotor time T
Maximum startup time with warm motor
T
Max.STARTUP W
Maximum startup time with cold motor
T
Max.STARTUP C
Trip Curve
Dropout Ratio
Dropout ratio
Tolerances
Pickup Threshold
Time Delay
Influencing Variables
Power supply direct voltage in range 0.8 ≤ V
Temperature in range 23.00 °F (-5 °C) ≤ Θ
Frequency in range f
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
for I = 1 A 0.50 A to 16.00 A
Nom
for I = 5 A 2.50 A to 80.00 A
Nom
for I = 1 A 0.40 A to 10.0 A
MOTOR START Nom
for I = 5 A 2.00 A to 50.00 A
Nom
Max.STARTUP
LOCKED ROTOR
Approx. 0.95
2 % of set value or 10 mA for I
5 % or 30 ms
amb
± 5 Hz
Nom
1.0 s to 180.0 s
0.5 s to 120.0 s or ∞ (disabled)
0.5 s to 180.0 s or ∞ (disabled)
0 % to 80 % or ∞ (disabled)
= 1 A or 50 mA for I
Nom
≤ 1.15
/V
PS PSNom
≤ 131.00 °F (55 °C)
Technical Data
4.9 Motor Starting Protection 48
Increment 0.01 A
Increment 0.01 A
Increments 0.1 s
Increments 0.1 s
Increments 0.1 s
Increments 1 %
= 5 A
Nom
1 %
0.5 %/10 K
1 %
1 %
1 %
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