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Table of Contents
1 General safety instructions 4
1.1 Safety symbols and terminology definitions 5
1.2 Safety Instructions 6
2 Introduction 7
2.1 System 8
2.2 Data evaluation and communication 10
2.3 Technical structure of the solar inverter 10
2.4 Ambient temperature 11
2.5 Inverter PV input DC voltage range 12
2.6 Efficiency 12
2.7 Equipment overview 13
2.8 Inverter type and safety labels 14
3 Installation 17
3.1 Visual inspection 19
3.2 Installation location 19
3.3 Mounting the inverter 20
3.4 Required torques for Delta E series 22
4 Electrical connections 23
4.1 General safety 23
4.2 Utility AC voltage 24
4.3 AC circuit breaker requirements 26
4.4 Grounding electrode conductor (GET) 26
4.5 Lightning and surge protection 26
4.6 Multiple inverters 26
4.7 PV string considerations 26
4.8 Inverter connections 27
4.8.1 General information 27
4.8.2 Opening the wiring box cover 29
4.8.3 Wiring box conduit plugs 30
4.8.4 PV array string input connections 32
4.8.5 PV switch LOCK out and TAG out procedure 34
4.8.6 Battery wire connections 35
4.8.7 Energy meter connections 36
4.8.8 Energy meter connections (Inverter Side) 38
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