The Fronius Smart Meter TS consumes 10 - 30 mA, the nominal capacity of the
disconnecting devices and the overcurrent‑protection is determined by the wire
thickness, the mains voltage and the required breaking capacity.
-
Disconnecting devices must be mounted within sight and as close as possible
to the Fronius Smart Meter TS; they must also be easy to use.
-
The disconnecting devices must satisfy the requirements of IEC 60947-1
and IEC 60947-3, as well as all national and local regulations for electrical
systems.
-
Use overcurrent‑protection rated for max. 65 A.
-
To monitor more than one mains voltage, use connected‑automatic circuit
breakers.
-
The overcurrent‑protection must protect the mains terminals with the desig-
nations L1, L2 and L3. In rare cases, the neutral conductor has an overcur-
rent‑protection, which must interrupt both neutral and non-earthed cables
concurrently.
Cabling IMPORTANT!
Always switch off the power supply before connecting the mains voltage inputs
to the Fronius Smart Meter TS.
Recommended thickness of stranded mains voltage cables for the terminals of
the measuring input and measuring output:
-
Wire: 1 - 16 mm²
-
Recommended torque: max. 2.8 Nm
Recommended thickness of stranded wires for data communication terminals:
-
Wire: min. 0.05 mm²
-
Recommended torque: max. 0.4 Nm
Connect each voltage cable to the terminal strip as shown in the graphics below.
3 phases, 4 conductors
3 phases, 3 conductors
18
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