Siemens SIPROTEC 5 Series

Reference Conditions and Influencing Variables
Reference Conditions
Measurand current I I
rated
± 1 %
Measurand voltage V V
rated
± 1 %
Frequency f f
rated
± 1 %
Sine waveform, total harmonic distortion ≤ 5 %
Ambient temperature T
a
23 °C ± 1 °C/73.4 °F ± 2 °F
Auxiliary voltage V
a
V
auxrated
± 1 %
Warmup time ≥ 15 min
External fields/external influences None
Variables Influencing Pickup and Dropout Thresholds (Protection)
Auxiliary voltage: 0.8 V
ar
to 1.2 V
ar
≤ 0.2 %
Ambient temperature: -10 °C to 55 °C ≤ 0.5 %/10 K
Frequency: 45 Hz to 65 Hz ≤ 1 %
Harmonics
•
Up to 10 % of 3rd harmonics
•
Up to 10 % of 5th harmonics
≤ 1 %
≤ 1 %
Warmup ≤ 0.3 %
Transient excess pickup in fundamental component measurement
method for τ > 100 ms (with complete unbalance)
≤ 5 %
EMC interference ≤ 5 %
Variables Influencing the Measured Values (Fault Recorders)
Auxiliary voltage: 0.8 V
ar
to 1.2 V
ar
≤ 0.2 %
Ambient temperature: -10 °C to 55 °C ≤ 0.5 %/10 K
Frequency: 45 Hz to 65 Hz ≤ 1 %
Harmonics
•
Up to 10 % of 3rd harmonics
•
Up to 10 % of 5th harmonics
≤ 1 %
≤ 1 %
Warmup ≤ 0.3 %
Transient excess pickup in fundamental component measurement
method for τ > 100 ms (with complete unbalance)
≤ 5 %
EMC interference
12
≤ 1.5 %
6.11
12
Use shielded cables for the current and voltage measuring inputs on the fault recorder.
Technical Data
6.11 Reference Conditions and Influencing Variables
SIPROTEC 5, Hardware Description, Manual 209
C53000-G5040-C002-C, Edition 10.2017