SMA SB 3000TL-20 Installation - Manual (Page 74)

Messages SMA Solar Technology AG
74 SB30TL_40TL_50TL-IA-IEN120231 Installation Guide
8 < Waiting for grid voltage >
< Grid failure >
< Check fuse >
• Check fuse.
• Check AC installation.
• Check whether there is a general
black-out.
9 < PE conn. missing >
< Check connection >
• Check AC installation.
• Connect the PE cable to the AC
terminal as described in section
5.3.2 ”Connecting the Inverter to the
Public Grid (AC)” (page 29).
10 < L / N swapped >
< Check connection >
• Adjust the connection as described in
section 5.3.2 ”Connecting the
Inverter to the Public Grid (AC)”
(page 29).
11 < Installation fault >
< Check connection >
Second phase connected to N.
• Adjust the connection as described in
section 5.3.2 ”Connecting the
Inverter to the Public Grid (AC)”
(page 29).
33 < Unstable operation >
The supply at the DC input of the inverter is
not sufficient for stable operation. The
reason for this could be snow-covered PV
modules. • Wait for higher irradiation.
• If this event recurs at medium
irradiation, check the PV system
design and correct the connection of
the PV generator.
34 < DC overvoltage >
< Disconnect generator >
The DC input voltage connected to the
inverter is too high.
• Immediately disconnect the
inverter from the PV generator,
as described in section
7.2 ”Opening the Inverter”
(page 61)! Otherwise, the
inverter may be destroyed.
• Check the DC voltage of the strings
for adherence to the maximum input
voltage of the inverter, before you re-
connect the inverter to the PV
generator.
35 < Insulation resist. >
< Check generator >
The inverter has detected a ground fault in
the PV generator.
• Check the strings for ground faults, as
described in section 11.1 ”Checking
the PV Generator for a Ground
Fault” (page 79).
• The installer of the PV generator must
remedy the ground faults before you
re-connect the affected string.
Event no. Display message and cause Corrective measures