Specifications

InstallationandOperationManual(REVH) PVI6500/PVI7500
 
52
WARNING!
Forcontinuedprotectionagainstriskoffire,replaceonlywiththesametypeandratingsoffuse(600
VDC,1A)!
ReplacingthePVStringFuses
The inverter is shipped with five (5) 15A, 600Vdc PV string fuses for PV strings. However, the size of the PV string fuse is
determinedbytheelectricalratingsofthePVmoduleandbyULandcoderequirements.TheminimumsizeofthePVstringfuse
is calculated using the
 short circuit current rating (Isc) of the PV module. Please be sure to consult with the PV module
manufacturerforappropriatePVstringfuserating.INNOCASESHALLFUSESOFLARGERTHAN20ABEUSEDINTHEPVSTRING
FUSEHOLDER.
ReplacingPVFuses
 STOP!

WARNING!EXTREMESHOCKANDFIREHAZARD!
FAILURETOFOLLOWTHEFOLLOWINGPROCEDURECANRESULTINSERIOUSSHOCK,FIREDAMAGEAND
WILLVOIDINVERTERWARRANTY!

o REMOVEWIRINGBOXCOVER
o CHECKDCVOLTAGESOFALLSTRINGSUSING600VDCMETER
 MEASUREDVOLTAGES SHOULD BE
OPENCIRCUITVOLTAGE;IFTHEMEASUREDVOLTAGE IS AT OR
CLOSE TO 0.0Vdc, THEN STOP! AND DO NOT REMOVE ANY FUSES.RECHECK YOUR WIRING TO
ENSURETHEREISNOTADEADSHORTORASTRINGWITHREVERSEDPOLARITY.
o CHECKDCCURRENTOFALLSTRINGSUSINGCLAMP‐ONDCMETER
 MEASURED CURRENTS SHOULD BE AT OR VERY CLOSE TO 0.0Adc.IF THERE IS A MEASURED
CURRENT READING, THEN STOP! AND DO NOT REMOVE ANY FUSES.RECHECK YOUR WIRING TO
ENSURETHEREISNOTADEADSHORTORASTRINGWITHREVERSEDPOLARITY.
o ONCE THE VOLTAGES AND CURRENTS ARE MEASURED AND CONFIRMED TO BE CORRECT, REMOVE AND
REPLACE THE PV STRING FUSES.NEVER REMOVE A DC FUSE UNDER CURRENT! REMOVING A DC FUSE
UNDERCURRENTCANRESULTININJURYANDWILLDAMAGETHEWIRINGBOX.
Fig5.3.2ReplacementofthePVstringfuses