Delta M Series User Manual

2
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 8
2.3 Technical structure of the solar inverter 9
2.4 Ambient temperature 10
2.5 Solar inverter PV input DC voltage range 10
2.6 Efficiency 11
2.7 Equipment overview 13
2.8 Inverter type and safety labels 15
3 Installation 17
3.1 Visual inspection 19
3.2 Installation location 19
3.3 Mounting the inverter 20
3.4 Required torques for M series NA solar inverters 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 27
4.8 Inverter connections 27
4.8.1 General information 27
4.8.3 Wiring box conduit plugs 30
4.8.4 PV array string input connections 32
4.8.5 Inverter AC output wire connections 34
4.8.6 Inverter RS485 communication connections 38
5 Commissioning the PV system 41
5.1 LED Indicationl 41
5.1.1 Introduction 41

Delta M Series Specifications

General

Brand	Delta
Model	M Series
Category	Inverter
Language	English