Siemens SIPROTEC 5

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
V
23 °C ± 1 °C
(73.4 °F ± 2 °F)
Auxiliary voltage V
Aux
V
Aux,rated
± 1 %
Warmup time ≥ 15 min
External fields/external influences None
Variables Influencing Pickup and Dropout Thresholds (Protection)
Auxiliary voltage: 0.8 V
Aux,rated
up to 1.2 V
Aux,rated
≤ 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
Aux,rated
up to 1.2 V
Aux,rated
≤ 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
31
≤ 1.5 %
6.11
31
Use shielded cables for the current and voltage measuring inputs on the fault recorder.
Technical Data
6.11 Reference Conditions and Influencing Variables
248 SIPROTEC 5, Hardware Description, Manual
C53000-G5040-C002-N, Edition 04.2022