12
/
18
20-30
N.m
M12
For L1/L2/L3/N and internal PE cable.
L1
L2
L3
N
L1
L2
L3
N
Gland for internal ground
cable
For cable gland
9-10
N.m
M72
Seal ring-5
For cable
OD=50-57mm
Gland for AC output cable
Press nut
End blocker
Seal ring-4
For cable
OD=43-50mm
Seal ring-3
For cable
OD=36-43mm
Seal ring-2
For cable
OD=30-36mm
Seal ring-1
For cable
OD=26-30mm
End blocker
Press nut
Seal ring-2
For cable
OD=18-25mm
Seal ring-1
For cable
OD=12-18mm
Recommend
FIG 4-14
Recommended AC cable connection position
4.5.3 Closing the Wiring Compartment
Step 1: Reinstall the protection plate and push the four plastic rivets into the holes at the chassis.
Step 2: Close the wiring compartment and tighten the four screws on its front cover with screwdriver T30.
M6
T30
4.5
N.m
FIG4-15
Close the wiring compartment
Notice
：
The gap between AC cable and waterproof gland must be blocked with fireproof mud to prevent water or moisture.
4.6 DC Cable Connection
DANGER
Electric shock!
The PV array will generate lethal high voltage once exposed to sunlight.
Before performing electrical operations, ensure that all cables are uncharged.
Do not turn on the AC circuit breaker before the inverter is electrically connected.
CAUTION
Make sure the PV array is well insulated to ground before connecting it to the inverter.
During the installation of PV strings and the solar inverter, the positive or negative terminals of PV
strings may be short-sircuited to ground if the power cable is not proprely installed or routed. In