User manual

AVERTISSEMENT:
Pour que le circuit GFDI fonctionne normalement, la prise de terre de
sécurité du système PV ne doit pas être branché aux câbles positifs ou
négatifs des piles PV. Brancher la prise de terre de sécurité au pied des piles
ou à toute autre partie que l’onduleur causerait une mise hors circuit du
GFDI. Ceci ne empêcherait le fonctionnement normale du circuit GFDI et
créerait des conditions de fonctionnement potentiellement dangereuses.
The GFDI functions using a 5 A fuse to connect or bond the solar array negative (or
the solar array positive, if using a positively grounded panel array) to earth ground
on the DC distribution PCB.If the ground fault current exceeds 5 A between the
grounded array terminal and the earth ground, the GFDI fuse will open and
disconnect the solar panels from their ground reference, interrupting the ground fault.
In this situation, the inverter will cease operation and show a ground fault message
on the inverter display.
To Identify the Cause of a Ground Fault
1.
Turn the ON/OFF switch on the display to the OFF position.
2. Turn the AC disconnect to the power OFF position.
3. Turn the DC disconnect to the power OFF position.
4. Identify the cause of the ground fault by checking the following items:
a. A configuration error during commissioning.
b. Switching the grounded conductor in the DC disconnect.
▪ For a negatively grounded system, the positive leg should be broken in the
DC disconnect.
▪ For a positively grounded system, the negative leg should be broken in the
DC disconnect.
c. A pinched wire in the installation connecting some part of the array or DC
wiring to earth ground.
d. Mismatched array strings in a multiple inverter installation.
e. An open GFDI fuse.
TO RESOLVE A GROUND FAULT
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.
Advanced Energy
8‑6 Troubleshooting and Solar Energy Technical Support 570-1001792-05A