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Contents
1.Introduction
......................................................................................................................................4
1.1 Overview
...............................................................................................................................4
1.2 Intended Audience
................................................................................................................4
1.3 Product Description
.............................................................................................................. 4
2. Safety Precautions
.......................................................................................................................... 5
2.1 Safety Instructions
................................................................................................................ 5
2.2 Symbol Conventions
.............................................................................................................6
2.3 Label Description
..................................................................................................................7
3. Product Description
........................................................................................................................ 8
3.1 Overview
...............................................................................................................................8
3.2 Basic Data
...........................................................................................................................11
3.3 Nameplate
........................................................................................................................... 12
3.4 Operating Principle
.............................................................................................................13
3.4.1 WIT 50-100K-A Operating Principle
..................................................................... 13
3.4.2 WIT 50-100K-H Operating Principle
..................................................................... 13
3.4.4 WIT 50-100K-HE, WIT 50-100K-HU Operating Principle
...................................14
3.5 Storing of the Storage Inverter
........................................................................................... 14
3.6 Grid Types
.......................................................................................................................... 15
3.7 AFCI Detection Function
................................................................................................... 15
3.8 Anti-PID Function
.............................................................................................................. 15
4.Inspection upon delivery
............................................................................................................... 16
5.Installation
..................................................................................................................................... 18
5.1 Basic Installation Requirements
.........................................................................................18
5.2 Installation Environment Requirements
.............................................................................19
5.3 Moving the Storage Inverter
...............................................................................................20
5.4 Mounting the Storage Inverter
............................................................................................21
5.4.1 Ground-mounting Installation
................................................................................. 21
5.4.2 Wall-mounting Installation
......................................................................................22
6. Electrical Connections
.................................................................................................................. 24
6.1 Connecting the Ground Cables
...........................................................................................28
6.2 Connection on the AC Side
................................................................................................ 28
6.3 Connection on the PV Side
.................................................................................................31
6.4 Connection on the Battery Side
..........................................................................................33
6.4.1 Connecting the Main Power Cable of the Battery
.................................................. 33
6.4.2 Connecting the Battery BMS-AC Terminal
............................................................34
6.5 Connecting Communications Cables
................................................................................. 35
6.5.1 Battery Communication Connection
.......................................................................35
6.5.2 External Communication connection
......................................................................36
6.5.3 Parallel Communication Connection
...................................................................... 38
6.5.4 Monitoring Device Terminal
................................................................................... 42
6.5.5 DRMS Terminal
...................................................................................................... 42
6.6 Post-installation Checks
..................................................................................................... 43
