ZGR SOLAR STR 250
Operation manual
www.zigor.com
21
4.4.2
Terminal description
Wiring terminals are at the bottom of the inverter, as shown in the Fig. 4-21 and in Table 4-7.
Fig. 4-21 ZGR SOLAR STR 250 wiring terminals
ITEM TERMINAL
MARK NOTE
A
PV terminals
+/-
24, PV connector
B
Communication terminal
COM1 RS485 communication.
COM2
COM3
C
AC wiring terminal
AC
Used for AC output cable connection.
D
Additional grounding terminal
Two grounds shall be connected.
Table 4-7 ZGR SOLAR STR 250 wiring terminals
4.4.3
Electrical connection
Electrical connection in the PV system includes additional grounding connection, AC connection, and PV string
connection (Fig. 4-22).
ITEM DESIGNATION
A
PV string
B
Inverter
C
Grid
D
Monitoring device
E
AC circuit
Fig. 4-22 ZGR SOLAR STR 250 wiring