ECU-C Installation/User Manual
6.Local Network Interface
e) zero export
Figure 20
The zero export function could limit the power export to the grid. Users could
set the maximum export power when the zero export function is turned on.
After turning on the Zero Export function, if the power limit value is not filled,
the default is 0, that is, when the ECU-C detects that the power generated by
the photovoltaic system is uploaded to the grid (reverse power), it immediately
sends a command to reduce the output power of the inverter to eliminate
reverse power, when the forward power flowing from the grid to the load
increases, the inverter output power increases again to dynamically adjust,
which can not only achieve the anti-backflow function, but also maximize the
use of solar energy.
f) Redundant energy control
The redundant energy control function could make the electric equipment to use
redundant energy. If the redundant power is more than power limit, ECU-C will
close the relay.
g) Three-phase balance
Three Phase Balance function could limit the current between each phase less
than 16A. User needs to click the "three phase configure" button to bind the
inverters into corresponding phase.
h) Extended Phase Symmetry
When using APsystems single-phase micro-inverse to form a three-phase system,
if one phase's AC breaker is tripped or swtiched off, the inverters on this phase
will shutdown, and then the inverters on the other 2 phases also will be turned
off, until the AC breaker is turned on, all the inverters will start again.
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