SolarEdge Solar Inverter - Installing the Power Optimizers; Safety

Chapter 2: Installing the Power Optimizers
SolarEdge Installation Guide – MAN-01-00057-2.2
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Chapter 2: Installing the Power Optimizers
Safety
The following notes and warnings apply when installing the power optimizers:
WARNING!
When modifying an existing installation, turn OFF the inverter ON/OFF switch and the AC circuit
breaker on the main AC distribution panel.
WARNING!
Input and output connectors are not watertight until mated. Open connectors should be mated to each
other or plugged with appropriate watertight caps.
CAUTION:
This unit must be operated according to the operating specifications in this document.
CAUTION:
Cutting the power optimizer input or output cable connector is prohibited and will void the warranty.
CAUTION:
Power optimizers are IP65/NEMA4 rated. Choose a mounting location where optimizers will not be
submerged in water.
CAUTION:
If you intend to mount the optimizers directly to the module or module frame, first consult the module
manufacturer for guidance regarding the mounting location and the impact, if any, on module warranty.
Drilling holes in the module frame should be done according to the module manufacturer instructions.
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.
In order to ensure mechanical compatibility of the SolarEdge optimizers and the modules 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 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.
IMPORTANT SAFETY FEATURE:
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.