6 User Manual
The person performing work on electrical equipment is responsible for the
safety of persons and property!
Disconnecting
Disconnect all cables supplying voltage to the working place before starting
any work. Please note that a lack of voltage is no guarantee that
disconnection has been performed.
Protecting against reconnection
Prevent the system from reconnecting by marking, closing or locking off the
work area. Unintentional reconnection may result in severe accidents.
Checking that system is voltage free
Ascertain conclusively by means of a voltage tester that the system is
voltage free. Check all terminals to ensure that the system is voltage free (on
each individual conductor).
Covering adjacent voltage-carrying components and preventing persons
from gaining access to them
Cover up all voltage-carrying system components that can harm you while
working. Make sure that danger areas are clearly marked.
1.6. System Sizing
When dimensioning a photovoltaic system, it must be ensured that the open
circuit voltage of the PV string never exceeds the maximum permissible
input voltage of 1000V DC. The PV string open circuit voltage during
parallel string operation is 910V. Higher voltages may result in permanent
damage to the inverter.
The selection of PV string output should be based on the optimum utilization of
the invested capital compared to the expected annual energy yield from the system.
This optimization depends on local weather conditions and should be considered
in each individual case.
The inverter incorporates an input power limiting device, which automatically
keeps the power at levels that are safe for the inverter. The limitation depends
mainly on internal and ambient temperatures. The limitation is calculated
continuously and always allows the maximum possible amount of energy to be
produced.
Please use the tool supplied by Trannergy when dimensioning a photovoltaic
system.
