3 phases, 4 conductors (Aron CT connection)
3 phases, 4 conductors (CT connection)
3 phases, 4 conductors (VT/CT connection)
Selection criter-
ia for current
transformer
General
Do not use current transformers with a voltage output.
Current transformers are directional. If they are mounted backwards or with
swapped wires, the measured power will be negative.
Primary current
Maximum current per phase. A current converter with a primary current greater
than the maximum expected current per phase should be selected. The closer
the expected current is to this value, the more precise the measurement will be.
Secondary current
The current transformer must supply alternating current at a nominal current of
1 or 5 A. The nominal values for the current transformer are listed in the current
transformer data sheet.
Power
The Fronius Smart Meter TS needs 0.5 VA to carry out its measurements. Losses
also occur on the outgoing and return leads. The power of the current converter
21
EN
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