Installation Guide

DC safety voltage is 1V (±0.1V)
Addition of RS485-2 support
Version 4.1 (Aug. 2017)
Updated the Safety section:
New warning:The Safety Switch meets all requirements for a code-
compliant installation of this system. The DC Disconnect Switch
disconnects both the positive and negative conductors.
New important safety feature information for inverters with automatic
rapid shutdown (PVRSS)
Overview section updated (system image , additional safety voltage
initiator:Rapid Shutdown (PVRSS)
In Supported AC Grids, added:Ground connection is required for all grids
In Power Optimizer Installation chapter:
Added warning about grounding the power optimizer metallic enclosure
Updated string extension cable length
Added information for connecting multiple modules in parallel to an
optimizer
Added grounding method testing information
Added: circuit conductors must be sized according to NEC 690.9 when
combining strings
Removed reference to racking models and their grounding methods
Removed mentioning of tracker
In inverter Installation chapter:
Added note about copper conductors
Removed previous interface panel description and images, and type 1
bracket
In Inverter Interfaces - updated ON/OFFswitch description, added
warning regarding PVRSS
Added a caution about not altering the Safety Switch
enclosure:SolarEdge does not permit opening or puncturing the Safety
Switch in any location other than the pre-defined drill guide locations,
Revision History 5
Three Phase System Installation Guide MAN-01-00002-4.3