Motor Starting Time Supervision (Ansi 48) - Siemens Siprotec 7UM611 Manual

4.19

Motor Starting Time Supervision (ANSI 48)

Setting Ranges / Increments
Tripping Characteristic
Dropout Ratio
Tolerances
Influencing Variables for Pickup Values
7UM61 Manual
C53000-G1176-C127-3
Motor Startup Current
I
STARTUP
Pickup Threshold for Startup
Detection
I
STRT DETECT.
Maximum Startup Time
T
Max. STARTUP
Admissible Locked Rotor Time
T
LOCKED-ROTOR
I /I
rms STARTUP DETECT.
Pickup Threshold
Time Delay
Power Supply DC Voltage in Range
0,8 ≤ U ≤ 1.15
/U
PS PSN
Temperature in Range
23°F or –5 °C ≤ Θ ≤ 131°F or 55 °C
amb
Frequency in Range
0,95 ≤ f/f ≤ 1.05
N
Harmonics
- Up to 10 % 3rd harmonic
- Up to 10 % 5th harmonic
4.19 Motor Starting Time Supervision (ANSI 48)
for I = 1 A 0.10 A to 16.00 A
N
for I = 5 A 0.50 A to 80.00 A
N
for I = 1 A 0.60 A to 10.0 A
N
for I = 5 A 3.00 A to 50.00 A
N
1.0 s to 180.0 s
0.05 s to 120.0 s or ∞ (in-
effective)
approx. 0.95
for I = 1 A 1 % of setting value or 10 mA
N
for I = 5 A 1 % of setting value or 50 mA
N
5 % or 30 ms
≤ 1 %
≤ 0.5 % / 10 K
≤ 1 %
≤ 1 %
≤ 1 %
Increments 0.01 A
Increments 0.05 A
Increments 0.01 A
Increments 0.05 A
Increments 0.1 s
Increments 0.1 s
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