Sungrow SG1250UD, Installation Manual

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4.2 Main Circuit Diagram .................................................................................14
5 Installation Design ................................................................. 15
5.1 Selecting Installation Location .................................................................. 15
5.1.1 Basic Requirements ......................................................................... 15
5.1.2 Requirements for Installation Environment ...................................... 15
5.1.3 Requirements for Foundation and Clearance .................................. 15
5.2 Installation Environment Design ............................................................... 15
5.2.1 Irradiation Requirements .................................................................. 15
5.2.2 Air Requirement ............................................................................... 15
5.2.3 Foundation requirements ................................................................. 16
5.2.4 Clearance Requirement ................................................................... 17
5.2.5 Cable Trench Design ........................................................................ 18
5.2.6 Ventilation Requirements ................................................................. 18
5.2.7 Others ............................................................................................... 19
5.3 Cable Routing Requirement ..................................................................... 19
5.4 Cable Fastening and Protection ............................................................... 20
5.4.1 Cable Fastening ............................................................................... 20
5.4.2 Cable Protection ............................................................................... 20
6 Mechanical Installation .......................................................... 21
6.1 Transport .................................................................................................. 21
6.1.1 Precautions ...................................................................................... 21
6.1.2 Transport .......................................................................................... 22
6.2 Installation ................................................................................................ 23
7 Electrical Connection ............................................................ 25
7.1 Safety Instructions .................................................................................... 25
7.1.1 General Safety Rules ....................................................................... 25
7.1.2 Five safety Rules .............................................................................. 25
7.2 Installation Tools and Spare Parts ............................................................ 26
7.3 Cable Connection ..................................................................................... 26
7.4 Preparation Before Electrical Connection ................................................ 26
7.4.1 Opening the Front Door ................................................................... 26
7.4.2 Removing the Protective Grid .......................................................... 26
7.4.3 Check Connection Cable ................................................................. 27
7.4.4 Cable Connection Precautions ........................................................ 27
7.5 Cable Entry Holes ..................................................................................... 27
7.6 Overview of the Connection Area ............................................................. 28
7.7 Cable Requirements ................................................................................. 28