Safety Devices; Anti-Islanding; Ground Fault Of The Photovoltaic Panels; React2-Batt State Of Health (Soh) - ABB REACT 2 Series Product Manual

S
afety devices
A
nti-Islanding
Anti-islanding protection mechanisms are different depending on the grid standards, even if
they all have the same purpose.
G
round fault of the photovoltaic panels
R
EACT2-BATT state of health (SOH)
O
ther safeguards
The numerous control systems determine a redundant structure to ensure absolutely safe
operations.
In the event of a local grid outage by the electricity company, or when
the equipment is switched off for maintenance operations, the inverter
must be physically disconnected to ensure the protection of the people
working on the grid, in accordance with the relevant national laws and
regulations. To prevent possible islanding, the inverter is equipped with
an automatic safety disconnection system called "Anti-Islanding".
i.e. with no ground connections on the positive and negative terminals.
An advanced ground fault protection circuit continuously monitors the
ground connection and disconnects the inverter when a ground fault is
detected, indicating the fault condition by means of the red "GFI" LED on
the front panel.
capacity and the nominal capacity of the battery (4kWh).
The SOH trend is constantly decreasing for natural aging linked to
the use of the battery and is not an indication of its malfunction. The
downward inclination of the degradation capacity depends on the actual
use and in particular on the number of average daily cycles, and on the
environmental working conditions such as temperature and humidity.
The SOH value is automatically measured periodically by the REACT2
system and its value is detectable by the user interfaces. Battery usage
will be automatically interrupted when the SOH reaches 60% and
displaying Warning (W054).
In case the W054 warning is present, the REACT2 inverter will continue
to function as a standard photovoltaic inverter.
- Constant monitoring of the grid voltage to ensure that voltage and
frequency values remain within operating limits;
- Internal temperature control to automatically limit the power if necessary to
prevent overheating of the unit (derating).
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2 - Characteristics