Siemens SIPROTEC 5 Hardware Description Manual page 31

6.11 Reference Conditions and Influencing Variables
Reference Conditions
Measurand current I
Measurand voltage V
Frequency f
Sine waveform, total harmonic distortion
Ambient temperature T
Auxiliary voltage V
Warmup time
External fields/external influences
Variables Influencing Pickup and Dropout Thresholds (Protection)
Auxiliary voltage: 0.8 V
Ambient temperature: -10 °C to 55 °C
Frequency: 45 Hz to 65 Hz
Harmonics
•
Up to 10 % of 3rd harmonics
•
Up to 10 % of 5th harmonics
Warmup
Transient excess pickup in fundamental component measurement
method for τ > 100 ms (with complete unbalance)
EMC interference
Variables Influencing the Measured Values (Fault Recorders)
Auxiliary voltage: 0.8 V
Ambient temperature: -10 °C to 55 °C
Frequency: 45 Hz to 65 Hz
Harmonics
•
Up to 10 % of 3rd harmonics
•
Up to 10 % of 5th harmonics
Warmup
Transient excess pickup in fundamental component measurement
method for τ > 100 ms (with complete unbalance)
EMC interference
27 Use shielded cables for the current and voltage measuring inputs on the fault recorder.
SIPROTEC 5, Hardware Description, Manual
C53000-G5040-C002-F, Edition 06.2019
V
Aux
up to 1.2 V
Aux,rated Aux,rated
up to 1.2 V
Aux,rated Aux,rated
27
6.11 Reference Conditions and Influencing Variables
I ± 1 %
rated
V ± 1 %
rated
f ± 1 %
rated
≤ 5 %
23 °C ± 1 °C
(73.4 °F ± 2 °F)
V ± 1 %
Aux,rated
≥ 15 min
None
≤ 0.2 %
≤ 0.5 %/10 K
≤ 1 %
≤ 1 %
≤ 1 %
≤ 0.3 %
≤ 5 %
≤ 5 %
≤ 0.2 %
≤ 0.5 %/10 K
≤ 1 %
≤ 1 %
≤ 1 %
≤ 0.3 %
≤ 5 %
≤ 1.5 %
Technical Data
227