11
INV250-45US / INV350-60US / INV500-90US
05.2014
The installation of a circuit junction box does not
necessarily need to be installed for a PV-system with
micro-inverters to work. If however, circuit junction
boxes are installed, be sure to follow all common
installation security measures and install in accordance
with all applicable local electrical codes and the
National Electrical Code (NEC), ANSI/NFPA 70.
The installation instructions shall indicate that the
wiring methods used shall be in accordance with the
Canadian Electrical Code, Part I.
6.3 Attach the Micro-Inverter to the PV Racking
To find the optimal location for the inverter, a summary
of key criteria that should be considered is listed below.
Select an installation location so that the following
points will find consideration:
•
Ensure best possible access to the unit for
installation and any subsequent service.
•
Ensure a minimum distance of 20 mm between the
roof top and the bottom of the inverter.
•
In addition, we recommend a distance of 25 mm
between the back of the PV module and the top of
the inverter.
•
The device is designed for attachment to the
mounting bracket under a PV module, but other
mounting options are possible.
•
The free flow of air around the case must not be
hindered.
NOTE!
Because of the voltage of the PV generator, there is
a greater current flow on the DC side than on the AC
side. Due to this, there are higher losses on the DC side
with the same cable cross-sections and lengths. For
this reason, the placement of the inverter in the vicinity
of the PV module is useful. The line lengths on the DC
side should be kept as correspondingly short.
To Install the Micro-Inverter under the PV module,
please use suitable accessories corresponding to the
framework used, for example with the use of screws
and sliding blocks.
In order to mount the inverters on the PV-framework
below the PV-modules, note the following:
Select the approximate center of the PV module on
the mounting profile. Fasten the inverter centered
on this mark with the help of accessories that are
compliant with the AEconversion Micro-Inverter and
the framework used. This could be done by fastening
the inverter with screws and sliding blocks below the
inverter supports at the framework profiles.
Mounting slots on the Micro-Inverter are 0.33 inches in
diameter. Maximum bolt size is 5/16 inch.
The two slots on the Micro-Inverter are 4 inches apart.
While installing, please note, that the inverter fastened
in the correct postition:
•
the top (with label) must be facing upward
•
the connectors must be facing down away from
framework
If an assembly to the PV-framework below the PV
modules is not possible, a more fitting alternative is
possible:
For wall mounting, the inverter can be turned 180 °
and mounted to the wall with the back of the inverter.
The brackets of the inverter are designed to guarantee
sufficient distance from the wall.
