SolarEdge SE66.6KUS - Connecting Power Optimisers

6. Recordpoweroptimiserserialnumbersandlocations,asdescribedinReportingandMonitoring
InstallationDataonpage54.
Step 2: Connecting a PV Module to a Power
Optimiser
NOTE
Images are for illustration purposes only. Refer to the label on the product to identify the plus and
minus input and output connectors.
Foreachofthepoweroptimisers:
l ConnectthePlus(+)outputconnectorofthemoduletothePlus(+)inputconnectorofthepower
optimiser.
l ConnecttheMinus(-)outputconnectorofthemoduletotheMinus(-)inputconnectorofthe
poweroptimiser.
Figure 8: Power optimiser connectors
Step 3: Connecting Power Optimisers in Strings
Youcanconstructparallelstringsofunequallength,thatis,thenumberofpoweroptimisersineach
stringdoesnothavetobethesame.Theminimumandmaximumstringlengthsarespecifiedinthe
powerdatasheets.RefertotheSolarEdgeSiteDesignerforstringlengthverification.
NOTE
l Use at least 11 AWG/ 4 mm² DC cables.
l The total conductor length of the string (excluding power optimisers’ conductors; including home
runs and necessary extensions between optimisers) should not exceed:
IMPORTANT SAFETY FEATURE
l For a compliant PV Rapid Shutdown (PVRSS) installation, use no more than 30 optimisers per
string.
l Enabling PVRSS from the inverter menu is only required if the installed optimisers were
manufactured before 2015, otherwise it is enabled by default.
NOTE
The DC bus of each unit is separate and not shared for all units. Therefore in addition to following the
inverter design rules, each unit should follow the unit design rules as detailed in the Technical
Specifications.
Chapter 2: Installing the Power Optimisers
-Three Phase Inverter with Synergy Technology Installation MAN-01-00402-1.4
19