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

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

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

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

2.4 Working Principle ....................................................................................................................................................... 12

3 Inverter Storage ........................................................................................................................... 15

4 Installation.................................................................................................................................... 16

4.1 Checking Before Installation ...................................................................................................................................... 16

4.2 Materials ..................................................................................................................................................................... 17

4.3 Determining the Installation Position ......................................................................................................................... 18

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

4.5 Installing the SUN2000 .............................................................................................................................................. 27

5 Electrical Connections ................................................................................................................ 31

5.1 Precautions .................................................................................................................................................................. 31

5.2 Crimping the OT Terminal .......................................................................................................................................... 31

5.3 Connecting a ground cable ......................................................................................................................................... 32

5.4 Opening the Maintenance Compartment Door ........................................................................................................... 33

5.5 Connecting AC Output Power Cables ......................................................................................................................... 35

5.6 Connecting DC Input Power Cables ........................................................................................................................... 39

5.7 Connecting the Communications Cable ...................................................................................................................... 45

5.7.1 Communication Mode Description .......................................................................................................................... 45

5.7.2 Connecting the RS485 Communications Cable ....................................................................................................... 46

5.8 Closing the Maintenance Compartment Door ............................................................................................................ 54

6 System Commissioning ............................................................................................................. 56

6.1 Checking Before Power-On ........................................................................................................................................ 56

6.2 DC Input Detection ..................................................................................................................................................... 56

6.3 Powering On the SUN2000 ........................................................................................................................................ 58

6.4 Powering Off the SUN2000 ........................................................................................................................................ 64

Issue 02 (2017-07-30)

Huawei Proprietary and Confidential

Contents