Siemens Siprotec 7UM612 - Motor Starting Time Supervision (ANSI 48)

4.19 Motor Starting Time Supervision (ANSI 48)
333
7UM61 Manual
C53000-G1176-C127-3
4.19 Motor Starting Time Supervision (ANSI 48)
Setting Ranges / Increments
Tripping Characteristic
Dropout Ratio
Tolerances
Influencing Variables for Pickup Values
Motor Startup Current
I
STARTUP
for I
N
= 1 A 0.10 A to 16.00 A Increments 0.01 A
for I
N
= 5 A 0.50 A to 80.00 A Increments 0.05 A
Pickup Threshold for Startup
Detection
I
STRT DETECT.
for I
N
= 1 A 0.60 A to 10.0 A Increments 0.01 A
for I
N
= 5 A 3.00 A to 50.00 A Increments 0.05 A
Maximum Startup Time
T
Max. STARTUP
1.0 s to 180.0 s Increments 0.1 s
Admissible Locked Rotor Time
T
LOCKED-ROTOR
0.05 s to 120.0 s or ∞ (in-
effective)
Increments 0.1 s
I
rms
/I
STARTUP DETECT.
approx. 0.95
Pickup Threshold for I
N
= 1 A 1 % of setting value or 10 mA
for I
N
= 5 A 1 % of setting value or 50 mA
Time Delay 5 % or 30 ms
Power Supply DC Voltage in Range
0,8 ≤ U
PS
/U
PSN
≤ 1.15
≤ 1 %
Temperature in Range
23°F or –5 °C ≤ Θ
amb
≤ 131°F or 55 °C
≤ 0.5 % / 10 K
Frequency in Range
0,95 ≤ f/f
N
≤ 1.05
≤ 1 %
Harmonics
- Up to 10 % 3rd harmonic
- Up to 10 % 5th harmonic
≤ 1 %
≤ 1 %
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