9
2.2
Data evaluation and communication
The integrated data display, processing and communication of the device enables easy operation of
the inverter. Monitoring of the operational status and signaling of operational failures are capable of
being reviewed on the device display. The data interfaces enable the downloading of data.
The best way of accessing this functionality is via a monitoring system, such as SolrenView, con-
nected to your inverter.
The read-out of the data on the display is possible when the inverter is connected to AC.
2.3
Technical structure of the inverter
The photovoltaic voltage is adjusted so that the maximum power output of the PV modules is also
achieved with different solar irradiation levels and temperatures (MPP-Tracking). These inverters
have quite wide MPP range of suit for variety of PV modules by a variety of manufacturers. Mea-
sures must be taken to ensure that the maximum no- load voltage of 600 V is never exceeded.
Please note that the maximum no-load voltage will occur at the lowest temperatures anticipated.
You will find more detailed information about temperature dependency in the data sheet for the
PV modules. The device’s power consumption is kept to a minimum (1.5 W). Warranty is void if
600VDC is exceeded.
The high-quality aluminum casing corresponds to protection degree NEMA 4 / IP65 (water-jet proof
and dust-proof) and is protected by an anti-corrosion finish. The heat sink on the PVI 3800-7600TL
inverters is designed in such a way that operation of the inverter is possible at ambient tempera-
tures from -13°F to +122°F (-25°C to +50°C) at full rated power and optimal efficiency for either 240
Vac or 208 Vac AC grids.
Aluminum fins designed into the back of the inverter chassis are used to dissipate heat and protect
the unit. An internal temperature control protects the interior of the device. In case of high ambient
temperatures, the maximum power is limited.
The inverter is controlled by microcontrollers which provide interface communication and the values
and messages on the front-panel display.
AC grid monitoring is done by an independent dedicated micro controller set up to meet the require-
ments of UL 1741 / IEEE 1547. This enables a connection of the inverter to the grid.
Operator protection requirements are met by electrically isolating the grid from the PV module. The
electrical isolation between the grid and the PV array is equivalent to basic insulation. Maximum
operator protection is ensured by reinforced isolation between the grid, PV modules and accessible
interfaces (display, RS485 interface and fan port). Relevant standards concerning electromagnetic
compatibility (EMC) and safety are fulfilled.
The inverter can only function as a grid-tied device. Anti-islanding function, which was certified ac
-
cording to UL 1741, guarantees disconnection in case of loss of AC grid.
Содержание PVI 3800TL
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