Installation Guidelines
For the minimum and maximum number of power optimizers in a string (string
length), see the power optimizer datasheets. Refer to the Designer for string length
verification. The Designer is available on the SolarEdge website at:
https://www.solaredge.com/us/products/installer-tools/designer#/.
The length of home-run cables from the first and last power optimizer to the
inverter (total cable length) may not exceed the following values:
Single Phase Inverters Three Phase Inverters
All - 1000 ft. /300 m
SE9KUS, SE20KUS - 1000 ft. /300 m
SE14.4KUS, SE17.3KUS, SE33.3KUS,
SE40KUS - 2300 ft. /700 m
Do not
use extension cables between a module and a power optimizer, between
two modules connected to the same power optimizer, or between two power
optimizers other than in the following cases:
Power optimizers with the 4-type suffix in their part number (Pxxx-4xxxxxx) -
extension cables of up to 16 m can be installed per optimizer (8 m for DC+ and
8 m for DC-).
Power optimizers manufactured starting from working week 42, 2019, as
indicated in the serial number (Example:S/N SJ5019A-xxxxxxxx - working week
50, 2019) - extension cables of up to 16 m can be installed per power optimizer
(8 m for DC+ and 8 m for DC-).
Extension cables can be installed between power optimizers only from row to
row, around obstacles or pathways within a row, and from the end of the
string to the inverter, as long as the total cable length is not exceeded.
For connecting power optimizers to the inverter, use cables with a minimum cross-
section of 11 AWG/ 4 mm² DC cables.
Frame-mounted power optimizers are mounted directly on the
module frame, regardless of racking system (rail-less or with rails). For
installation of frame-mounted power optimizers, refer to
http://www.solaredge.com/sites/default/files/installing_frame_
mounted_power_optimizers.pdf.
The power optimizer can be placed in any orientation.
If connecting more modules than power optimizer inputs in parallel, use a branch
cable. Some commercial power optimizer models have a dual input.
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.3
18 Installation Guidelines
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