To Resolve A Ground Fault - Advanced Energy AE 75TX Installation And Operation Manual

Advanced Energy® AE ?STX and AE 1 OOTX Inverters
e. An open GFDI fuse.
TO RESOLVE A GROUND FAULT
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DANGER:
This unit contains energy storage devices that take up to 5 minutes to
discharge. Verify the high energy capacitors are completely discharged
before working on this unit.
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DANGER:
Cette unite contient des dispositifs de stockage d'energie qui prennent
jusqu'a 5 minutes pour se decharger. Verifier que les condensateurs a haute
energie sent completement decharges avant de travailler sur l'unite.
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DANGER:
Verify that no shock hazard exists between both fuse terminals and earth
ground before removing the fuse. A 600 V rated fuse pulling device is
required.
LL
DANGER:
Verifier qu'il n'y a aucun risque d'electrocution entre les deux bomes de
fusible et la prise de terre avant de retirer le fusible. Un arrache-fusible d'une
capacite de 600 V est requis.
1. Open the DC side door and locate the DC distribution PCB.
2 . Inspect the GFDI fuse for continuity using a multimeter.
3. Remove the GFDI fuse.
4 . Check for continuity (ohms) across the GFDI fuse.
If the meter indicates no continuity then a ground fault likely exists.
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Check the DC voltage between the grounded te1 minal of the an ay and eaith
ground. The voltage should be less than 30 V with the GFDI fuse removed.
If
the voltage is higher than 30 V, a ground fault likely still exists. Check the
airny wiling. For the best results, perfonn this test with the DC disconnect in
both the ON and OFF positions.
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Make sure the grounded leg of the solar anay is not disconnected in the DC
disconnect.
5. Once the ground fault condition has been eliminated, vedfy the voltage
between eaith ground and the grounded side of the PV anay is less than 30 V.
6. Ensure that the DC disconnect is in the OFF position and install the new GFDI
fuse.
570-1001793-0SB Troubleshooting and Solar Energy Technical Support 8-7