Ground Fault Interrupt Device; To Respond To A Ground Fault - Advanced Energy AE 75TX Installation And Operation Manual

Advanced Energy® AE ?STX and AE 1 OOTX Inverters
GROUND FAULT INTERRUPT DEVICE
The inve1ter is equipped with a ground fault detector intenupter (GFDI). The purpose
of the GFDI is to detect a ground fault (unintended current flow from the solar panels
to earth ground) and in this event, disable the inverter.
The GFDI functions using a 3 A fuse to connect or bond the solar array negative (or
the solar array positive, if using a positively grounded panel atTay) to earth ground.
If the ground fault
cmTent exceeds the fuse limit between the grounded array terminal
and the earth ground, the fuse will open and disconnect the solar panels from their
ground reference, inte1rupting the ground fault. In this situation, the inverter will
cease operation and display a fault message.
To Respond to a Ground Fault
&
WARNING:
For the GFDI circuit to function as designed, the solar array safety ground
must not be connected to the PV array positive or negative leads. Bonding
the safety ground to the grounded leg of the array anywhere but through the
inverter will cause the GFDI circuit to be bypassed. This would defeat the
operation of the GFDI and potentially create an unsafe operating condition.
Lb._
A VERTISSEMENT:
Pour que le circuit GFDI fonctionne normalement, la prise de terre de
securite du systeme PV ne dolt pas etre branche aux cAbles positifs ou
nltgatifs des piles PV. Brancher la prise de terre de securite au pied des piles
ou
a
toute autre partie que l'onduleur causerait une mise hors circuit du
GFDI. Ceci ne empecherait le fonctionnement normale du circuit GFDI et
creerait des conditions de fonctionnement potentiellement dangereuses.
• If the inverter displays
a ground fault as shown in the following figure tmn off
the AC and DC to the inverter and refer to the inverter maintenance and
troubleshooting information.
Fault
AC FAST UNDERVOLT A
GROUND FAULT
Figure 5-11. Ground fault error message
Related Links
• "Maintenance" on page 7-1
• "Troubleshooting and Solar Energy Technical Support" on page 8-1
570-1001793-0SB Operation 5-7