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Connect DC
- Insert the DC cables through the DC conduit and connect them to the
- Connect the positive (+) cables to the "DC+" terminals, and the negative
- Connect the module frame ground wire to the second terminal (6) la-
Important! Use minimum AWG 10, min. 167 °F (75 °C), copper wire for
all grounding cables.
- Tighten wires with a torque of 1.7 ft. lbf.
- For your convenience, an additional grounding electrode terminal (7) is
NOTE! To access the DC terminals, the white plastic divider needs
to be bent upward or rotated out of the way.
terminal block.
(-) cables to the "DC-" terminals and tighten them with a torque of 1.7 ft.
lbf.
NOTE! It is possible to connect up to 3 PV-strings in parallel within
the FRONIUS IG 2000, 3000, 2500-LV, 4000, 5100 and 4500-LV.
NOTE! Do not connect the ground to the DC negative at any point!
This is already done within the FRONIUS IG. If the DC negative is
connected to ground at the DC terminal block or prior, this will
circumvent the GFDI protection system, preventing your FRONIUS
IG from properly detecting a fault current. Additionally, turning the
DC disconnect to the off/open-circuit condition will not disconnect
the array from ground, as it only disconnects the DC positive.
beled
.
provided in case local regulations require additional grounding measu-
res.
NOTE! Connecting the DC
wiring with the wrong polari-
ty may cause damage to the
inverter. Connect the DC
cables as described in the
following instructions.
Check both the polarity and the
open circuit voltage. The DC Volta-
ge must not exceed 500 V, regard-
less of temperature.
53
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