CAUTION!
Installing a SolarEdge system without ensuring compatibility of the module
connectors with the optimizer connectors may be unsafe and could cause
functionality problems such as ground faults, resulting in inverter shut down. To
ensure mechanical compatibility of the power optimizers’ connectors with the PV
modules’ connectors to which they are connected:
Use identical connectors from the same manufacturer and of the same
type on both the power optimizers and on the modules; or
Verify that the connectors are compatible in the following way:
The module connector manufacturer should explicitly verify
compatibility with the SolarEdge optimizer connector; and
A third-party test report by one of the listed external labs (TUV,
VDE, Bureau Veritas UL, CSA, InterTek) should be
obtained,verifying the compatibility of the
connectors.
For more information, refer to
https://www.solaredge.com/sites/default/files/optimizer-input-
connector-compatibility.pdf
IMPORTANTSAFETYFEATURE
Modules with SolarEdge power optimizers are safe. They carry only a low safety
voltage before the inverter is turned ON. As long as the power optimizers are
not connected to the inverter or the inverter is turned OFF, each power
optimizer will output a safe voltage of 1V.
Installation Guidelines
The minimum and maximum string length guidelines are stated in 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/products/installer-tools/designer#/.
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.
Chapter 2: Installing the Power Optimizers 17
Three Phase System Installation Guide MAN-01-00057-4.1
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