It is possible to set a 3‑phase power level (specified in kW). This must be reached by
the photovoltaic system before the Wattpilot switches from 1‑phase to 3‑phase charging.
The settings for the start-up power level and 3‑phase power level can be made under
Cost optimisation in the Fronius Solar.wattpilot app.
The power level can only be regulated in increments of 1 ampere. The table below lists
the charging current in amperes (A) and the corresponding charging power for 1‑phase
and 3‑phase charging in kilowatts (kW). 1-phase in 0.23 kW increments, 3-phase in
0.69 kW increments. The values are based on the assumption that the voltage is exactly
230 or 400 V.
- Example: The charging current is increased by 1 A to 7 A.
- 1‑phase: 1.38 kW + 0.23 kW = 1.61 kW
- 3‑phase: 4.14 kW + 0.69 kW = 4.83 kW
Charging cur-
rent (A)
6 8 10 12 14 16 20 24 32
1‑phase (kW) 1.38 1.84 2.3 2.76 3.22 3.68 4.6 5.52 7.36
3‑phase (kW) 4.14 5.52 6.9 8.28 9.66 11 13.8 16.56 22
Example
Photovoltaic generation
Electric vehicle
The figure illustrates the behaviour of the Wattpilot with a set start-up power level of
1.38 kW and a 3‑phase power level of 4.14 kW. If the PV surplus is less than 1.38 kW,
the vehicle is not charged.
If the PV surplus is between 1.38 and 4.14 kW, the Wattpilot regulates the charging
power in0.23 kWincrements.
If the PV surplus is above 4.14 kW, the Wattpilot switches from 1‑phase charging to
3‑phase charging and regulates the charging power in 0.69 kWincrements.
21
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