Load Jam Protection - Siemens SIPROTEC 4 7SJ61 Manual

Technical Data

4.11 Load Jam Protection

4.11 Load Jam Protection
Setting Ranges / Increments
Tripping threshold
Alarm threshold
Trip delay
Message delay
Blocking duration after motor start
Timers
Pickup time
Dropout time
Dropout ratio
Dropout ratio tripping stage
Dropout ratio warning stage
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 25 Hz to 70 Hz
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
314
for Ι = 1 A 0.50 A to 12.00 A
Nom
2.50 A to 60.00 A
for Ι = 5 A
Nom
for Ι = 1 A 0.50 A to 12.00 A
Nom
2.50 A to 60.00 A
for Ι = 5 A
Nom
0.00 s to 600.00 s
0.00 s to 600.00 s
0.00 s to 600.00 s
approx. 55 ms
approx. 30 ms
approx. 0,95
approx. 0,95
= 1 A 2 % of setting value or 10 mA
for Ι
Nom
for Ι = 5 A 2 % of setting value or 50 mA
Nom
1 % or 10 ms
/V ≤ 1.15
PS PSNom
≤ 131.00 °F (55 °C)
amb
Increments 0.01 A
Increments 0.01 A
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
1 %
0,5 %/10 K
1 %
1 %
1 %
SIPROTEC 4, 7SJ61, Manual
C53000-G1140-C210-6, Edition 05.2016