Goodwe ET Series User Manual page 10

2.4 WIRING
2.4.1 PV CONNECTION
Before connecting the PV panels/strings to the changer, check the following points:
•
The total shortcircuit current of the panels is no higher than the max input DC of the
inverter. (for GW8KL-ET and GW10KL-ET, the PV2 has two pairs of connectors, allowing
two strings to be connected with a total short circuit current not exceeding 22A).
•
The insulation resistance of the PV panels against the ground must be more than 33.33k,
otherwise, there is a risk of electric shock.
•
The PV string should not be attached to the ground.
•
Use the attached connectors to connect the PV strings. (THE BAT connector is similar to
the PV connector, check the connectors thoroughly before connecting)
NOTE: Accessories include either MC4 or QC4.10 connectors or Amphenol, the detailed connection is shown
below.
Step 1
Note:
- Use the PV connectors included in the package
- Use a PV cable with a cross-section of 2.5-4 mm2
Step 2
Connect the PV cable with the PV connector
Note:
- The PV cable must be tightly pressed with the connector
- For the Amphenol connector, use a limiting clip, it must not be pressed. There must be a click when
the connector is assembled
Step 3
Pull the cap onto the connector
Note:
- You should hear a click when the connector is inserted
The polarity of the PV input must not be reversed, otherwise, there is a risk of destroying the inverter [3]
For GW8KL-ET and GW10KL-ET, if the PV array you connect to the PV2 input has a short-circuit current
higher than 15A, divide the PV array into two strings and connect two pairs of connectors to the PV2
input.