Darfon MIG300, Руководство по установке, Страница: 8 / 28

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I N S T A L L A T I O N M A N U A L M I G 3 0 0 M I C R O I N V E R T E R
INSTALLING THE MICRO INVERTER
The following sections list steps on how to install the Darfon MIG300 micro inverter onto standard PV
racking.
Installing onto a PV Racking System
Step 1: Measure the AC Service at the Site
Measure service entrance conductors to confirm AC service
at the site. Verify that the AC voltages at the electrical utility
connection and at the junction box for each AC branch
circuit are within the ranges.
Step 2: Install the AC Branch Circuit Junction Box
2.1 Mount the adapter plate to a suitable location on the PV racking
system (typically at the end of a row of modules). The adapter
plate must be installed with an appropriate junction box.
2.2 Connect the open wire end of the AC interconnect cable into the
junction box using an appropriate gland or strain relief fitting. The AC
interconnect cable requires a strain relief connector with an opening
of 3/8 inches in diameter.
Step 3: Lay Out the AC Trunk Cable
Place the AC trunk cable at the required location. Align the T-branch connector to the position
where the micro inverter will be installed. Then secure the cable on either side of the rack using
cable clips or tie wraps.
Step 4: Attach the Micro Inverter to the PV Racking
4.1 Note the approximate centers of each PV
module on the PV racking.
4.2 Evaluate the location of the micro inverter
against potential collection of moisture or water.
4.3 Evaluate the location of the micro inverter with
respect to the DC junction box and the PV
module frame.
4.4 Align the MIG300 so that the holes on the
mounting bracket are above the slot opening on
the PV racking and secure the micro inverter to
the PV racking with screws.
CAUTION
Ensure that the inverter does not obstruct the PV module frame or stiffen braces.
Ensure the micro inverter’s AC connector can easily reach the T-branch connector.
240 Volt AC Single Phase
L1 to L2
211 to 264 VAC
L1, L2 to neutral 106 to 132 VAC