2 Overview ......................................................................................................................................... 4

2.1 Introduction .................................................................................................................................................................. 4

2.2 Appearance ................................................................................................................................................................... 5

2.3 Label Description .......................................................................................................................................................... 9

2.4 Working Principle ....................................................................................................................................................... 14

3 Storage ........................................................................................................................................... 16

4 Installation.................................................................................................................................... 17

4.1 Checking Before Installation ...................................................................................................................................... 17

4.2 Materials ..................................................................................................................................................................... 18

4.3 Determining the Installation Position ......................................................................................................................... 19

4.4 Installing the Mounting Bracket ................................................................................................................................. 23

4.5 Installing the SUN2000 .............................................................................................................................................. 28

5 General Operation ...................................................................................................................... 31

5.1 Crimping the OT Terminal .......................................................................................................................................... 31

5.2 Installing the Tube Fittings ......................................................................................................................................... 33

5.3 Routing Cables Through Waterproof Connectors ....................................................................................................... 36

6 Electrical Connections ................................................................................................................ 38

6.1 Precautions .................................................................................................................................................................. 38

6.2 Opening the Maintenance Compartment Door ........................................................................................................... 38

6.3 Connecting the Ground Cable ..................................................................................................................................... 40

6.3.1 Connecting a Ground Cable to the PE Point (Bonding)........................................................................................... 40

6.3.2 Connecting the Ground Cable to the PV Side Ground Point (GND) ....................................................................... 41

6.4 Connecting AC Output Power Cables ......................................................................................................................... 42

6.4.1 Connection Through a Tube ..................................................................................................................................... 43

6.4.2 Connection Through a Waterproof Connector ......................................................................................................... 45

6.5 Connecting DC Input Power Cables ........................................................................................................................... 49

6.6 Connecting the Communications Cable ...................................................................................................................... 56

6.6.1 Communication Mode Description .......................................................................................................................... 56

Issue 04 (2018-06-01)

Huawei Proprietary and Confidential

Contents