Darfon G640, Руководство пользователя

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G 6 4 0 M i c r o I n v e r t e r U s e r M a n u a l
G 6 4 0 U M d r a f t
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electrically compatible.
Before ordering the PV module, make sure the connector type is compatible with
the micro inverter.
Electrical Compatibility
Model PV MPPT Voltage Range PV Module Connector Type
G640 24V to 45V MC4 Locking
[Male-Anode (+), Female-Cathode (-)]
Voltage and Capacity
AC Trunk Cable Overcurrent Protection 240V (Single Phase)
12AWG 20Amp Breaker 6 MI
WARNING
DO NOT exceed the maximum
number of micro inverters in
an AC branch circuit as listed above.
CAUTION
Each AC branch circuit must be
protected by a dedicated circuit
breaker of 20A or less if using 12 AWG trunk
cable.
AC Trunk Cable
Depending on the orientation of the installation, the AC trunk cable can be in
portrait or landscape format.
Pin Wire color Wire Usage
1 Black L1
2 Red L2
3 Green Ground
Grounding Options
Option 1: Integrated Grounding
Integrated grounding eliminates the need to install Grounding Electrode
Conductor (GEC) to each G640 by completely isolating the internal DC circuit
from the AC circuit and ground. DC ground faults are detected on either the
positive and/or negative conductors of the DC circuit by a Ground Fault Detection
Interrupter Insulation Monitor (GFDI IM). If the GFDI IM detects a ground fault
has occurred to the PV input, the micro inverter will automatically disconnect all
conductors and cease supplying output power. In accordance with NEC 690.35,
installers can build ungrounded arrays where only an Equipment Grounding
Conductor (EGC) is required to connect or bond non-current carrying metal
equipment together. The EGC grounding process is completed via the grounding
connection of G640 3-wire AC cable. The PV module will still need to be
grounded according to the module manufacturer’s instructions.
Option 2: GEC Grounding
Although the G640 offers integrated grounding (UL 1741 certified), it also comes
with a grounding terminal clip for any localities that do not accept integrated
grounding. The micro inverter manufacturer will not be held responsible for
improper installations that do not have local AHJ and/or Utility operational
approval.
As indicated in the diagram below, the array GEC can be installed either in series
or in parallel.