FANOX SIA-B Series, Руководство пользователя

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3.5. Phase CT and neutral CT selection
SIA-B relay requires current transformers with the following specifications:
SIAB/1: CT Burden 2 VA to achieve the self-powering from the minimum declared value.
The relay can measure up to 20xIn in the phases and up to 16xIn in the neutral:
Phases measurement: 0.1-20xIn
Neutral measurement: 0.05-16xIn
Model Phase Neutral Phase range Neutral range
SIAB11 CT 1 A Residual phase connection or CT 1A 0.1-20 A 0.05-16 A
3.5.1. Load curve for SIA-B relay
0,000
1,000
2,000
3,000
4,000
5,000
6,000
0,000 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 21,000
A
ve
rag
e
V
o
ltag
e
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V
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Average Current (A)
Load Curve for SIA-B /1 relay