ZGR SOLAR STR 250
Operation manual
www.zigor.com
29
4.4.6.1
PV Input Configuration
As shown in the Fig. 4-36, the inverter is provided with multiple PV inputs: PV inputs 1~12; and each PV input is
designed with an MPP tracker.
Each PV input operates independently and has its own MPPT. In this way, string structures of each PV input may
differ from each other, including PV module type, number of PV modules in each string, angle of tilt, and
installation orientation.
Each PV input area includes two DC inputs DC1 and DC2. For the best use of DC power, DC1 and DC2 should be
the same in PV string structure, including the type, number, tilt, and orientation of the PV modules (Table 4-10).
Fig. 4-36 PV Input
No
DEFINITION MAX. CURRENT FOR INPUT CONNECTOR
ZGR SOLAR STR 250
1500 V
30 A
Table 4-11 PV Input specifications
4.4.6.2
Connection procedure
ZIGOR provides corresponding plug connectors in the scope of delivery for quick connection of PV inputs.
DC cables should be connected to the inverter via PV connectors which are included in the scope of delivery.
NOTE:
To ensure IP66 protection, use only the supplied connector or the connector with the same ingress of
protection.
WARNING
Make sure the PV array is well insulated to ground before connecting it to the inverter.
NOTICE
There is a risk of inverter damage! The following requirements should be met. Failure to do so will void
guarantee and warranty claims.
Make sure the maximum voltage of each string is always less than 1500V.
Make sure the maximum short circuit current on the DC side is within the permissible range.
