Dc Cable Connection - CanadianSolar CSI-75K-T40001-E Quick Installation Manual

NOTE：The AC cable should enter the box vertically, and the length of the straight section should not be less than 200mm.
4.5.3 Closing the Wiring Compartment
Step 1: Attach the protection plate and push the four plastic rivets into the holes in the chassis.
Step 2: Close the wiring compartment and tighten the four screws on its front cover with screwdriver T30.
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

Electric shock!
The PV array will generate lethal high voltage once exposed to sunlight.
DANGER Before performing electrical operations, ensure that all cables are uncharged.
Do not turn on the AC circuit breaker before the inverter is electrically connected.
Make sure the PV array is well insulated to the 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-circuited to ground if the power cable is not properly installed or routed. In
this case, an AC or DC short circuit may occur and damage the solar inverter.
CAUTION
In the event of an AC or DC short circuit causing damage to the solar inverter, please note that the
affected device is not covered under any warranty.
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 1100 V.
NOTICE • The inverter enters the standby state when the input voltage ranges between 1,000V and
1,100V. The inverter returns to the running state once the
voltage returns to the MPPT operating voltage range (200 to 1,000V).
Make sure the maximum short circuit current on the DC side is within the permissible range.
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FIG 4-15 AC wiring outlet requirements
T30
FIG 4-15 Close the wiring compartment
M6
4.5
N.m
EN-Rev 75-120kW QI/V03a December, 2023. CSI Solar Co.,