5 Electrical Connection
User Manual
32
To make sure the maximum DC power, PV strings connected to individual
input area should have a homogenous structure, i.e. the same type, the
same number, the same identical tilt and identical orientation.
Prior to connecting inverter to PV inputs, the following specifications should be met:
Type
Area
DC Power
Limit for
Each Input
Open-circuit
Voltage Limit
for Each Input
Short-circuit
Current Limit
for Each Input
SG3KTL-EC
DC1
3191 W
1000 V
12.4 A
DC2
SG4KTL-EC
DC1
4255 W
1000 V
12.4 A
DC2
SG5KTL-EC
DC1
5265 W
1000 V
12.4 A
DC2
SG6KTL-EC
DC1
6312 W
1000 V
12.4 A
DC2
In independent mode, when there is only one PV input, the other input may
produce induced voltage. DO NOT touch the unused DC terminals.
PV Configuration Mode-Parallel Mode
For parallel mode, all PV strings with the same type, the same number of PV panels,
identical tilt and identical orientation in series can be connected to the same single
input area. Two trackers are configured in parallel to handle power and/or current
levels higher than those a single tracker can handle.
As shown in the following figure, the inverter may choose parallel mode since there
is no difference between the two PV inputs. The terminals in DC1 input and DC2
input must be short-circuited by Y-type cable connector.
