PV Grid-tied Residential Inverter and Integrated AC/DC Disconnect
Installation and Operation Manual
ix
List of Figures and Tables
Figure 2-1 Interior Components of the Inverter/Disconnect Unit ...............6
Figure 3-1 Small Mounting Bracket ...........................................................7
Figure 3-2 Large Mounting Bracket ...........................................................8
Figure 3-3 Inverter’s Inside Screw Below the Power Board ......................9
Figure 3-4 Inverter and Integrated AC/DC
Disconnect with Mounting Bracket ...........................................9
Table 4-1 Inverter Compatibility with Voltage and Grid .........................13
Figure 4-1 Supported Utility Voltage Configurations ...............................13
Table 4-2 Recommended Branch Circuit Protection ...............................14
Table 4-3 Inverter Voltage and Frequency Limits ...................................15
Figure 4-2 Knockouts on AC/DC Disconnect - Bottom View ..................17
Table 4-4 Grounding Electrode Conductor Sizing ..................................18
Figure 4-3 System Block Diagram of Single-point System Ground .......19
Figure 4-4 Grounding of the Inverter and Integrated AC/DC Disconnect 20
Figure 4-5 Ground Fault Message ............................................................21
Figure 4-6 AC and PV Grounding in Integrated
AC/DC Disconnect Cabinet ....................................................21
Table 4-5 Conductor Use By Inverter Model ..........................................22
Figure 4-7 Disconnect’s AC Conductor Connections:
EGC, Line 1 and Line 2 ..........................................................24
Figure 4-8 Wiring Multiple Arrays with Inverter/Disconnect Units .........28
Figure 5-1 Normal Startup Screens ...........................................................31
Figure 5-2 Running Screens ......................................................................32
Figure 6-2 Starting Up From a Faulted State ............................................35
Figure 6-3 AC Voltage High/DC Voltage Low Fault ................................35
Figure 6-4 Power Low Fault .....................................................................36
Table 6-2 Normal Fault Codes ................................................................38
Table 6-3 Fault Codes Requiring Service ................................................38
Figure 7-1 Connections between the Inverter and Integrated AC/DC
Disconnect ...............................................................................40
Figure 7-2 Reconnecting the Inverter’s Conductors .................................42
