PV Powered PVP2000, Руководство по установке и эксплуатации

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PV Grid-tied Residential Inverter and Integrated AC/DC Disconnect
Installation and Operation Manual
17
The three sections are:
• Left knockouts — dedicated to the low voltage DC communications
for the PVM1010 Data Monitoring Module
• Center knockouts — dedicated to AC connections
• Right knockouts — dedicated to DC connections
Refer to the following figure for specific locations of the knockouts.
Data Comm
Knockout
AC Knockouts
GFI Fuse External
Access Port
DC Knockouts
Figure 4-2 Knockouts on AC/DC Disconnect - Bottom View
4.7 Single-point Grounding
Inverter Grounding
A single-point ground conductor connection is located in the lower
right-hand side of the inverter cabinet. This is where the DC Grounding
Electrode Conductor (GEC) is terminated. The AC Equipment Grounding
Conductor (EGC) is terminated next to the Line 1 and Line 2 connections
on the circuit board.
The grounding lug is attached to the cabinet with a 10-32 bolt. The
equipment ground connector or grounding lug is provided, utilizing the PV
equipment and AC ground conductor. This is the only place the PV ground
should be connected to the inverter.
• Do not tie the GEC to the PV array positive or negative. This would
defeat the PV ground fault interrupt protection circuit. Refer to Figure
4-6 for illustrated information.
• Refer to Table 4-4 for appropriate sizing of the grounding electrode
conductor. Use the maximum current AC or DC - whichever is larger -
and multiply by 1.25 to get the maximum current rating per NEC 690.