Dc Fuses; Connecting To The Dc Input Terminals; Figure 4-9. 1000 Series Dc Terminal Block Location - Advanced Energy AE 3TL 600 Series Installation And Operation Manual

Figure 4‑9. 1000 series DC terminal block location

DC FUSES

The inverter uses string fuses to protect the solar modules. A decisive factor for fuse
protection of solar modules is the maximum short-circuit current of the respective
solar module. The inverter comes standard with 15 A fuses. 20 A fuses are the
maximum allowed. Refer to NEC 690 for fuse sizing.
☞
Important
The size of the string fuses must not exceed the series fuse rating of the PV
module. For example, if 15 A is specified on the data sheet of the PV module,
this is the recommended fuse rating. If the data sheet does not contain
specifications for the series fuse rating, contact the PV module manufacturer.
If a string fuse with a lower trip value is used, the rated fuse current is lower than the
short circuit current of the solar module. In this scenario, when there is an increased
irradiation situation, the irradiation could cause the panel(s) to produce more current
than normal and blow the fuse.

CONNECTING TO THE DC INPUT TERMINALS

DANGER:
Make sure the PV array polarity and voltage between the positive and
negative cables are correct before connecting the PV array cables to the DC
terminal block.
DANGER:
Assurez-vous que la polarité et le voltage des câbles positifs et négatifs des
piles PV sont corrects avant de brancher les câbles des piles PV aux bornes
CC.
570-1003552-05A
Advanced Energy® AE 3TL Inverters
DC inputs
Installing 4‑19