Sungrow SC3150UD-MV-US System Manual

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Then the screw of the pressure relief port needs to be removed before connecting to the grid.
As shown below:
step 1 Remove the screws of the front and rear pressure relief devices.
step 2 Remove the screw from the bottom pressure relief device.
System Manual 6 Electrical Connection

Sungrow SC3150UD-MV-US Specifications

General

Brand	Sungrow
Model	SC3150UD-MV-US
Category	Storage
Language	English