Installation Guidelines - SolarEdge Delta SE12.5K Installation Manual

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
module' 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
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.

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/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
All - 1000 ft. /300 m
Three Phase System MAN-01-00505-1.5
Chapter 2: Installing the Power Optimizers
Three Phase Inverters
SE17K and below - 1000 ft. /300 m
Above SE17K - 2300 ft. /700 m
13