SMA STP 8000TL-10 - Manual (Page 77)

SMA Solar Technology AG 11 Messages
Installation Manual STP8-17TL-IA-en-31 77
3301 …
3303 < Unstable operation >
There is not enough power at the DC input
of the inverter for stable operation. This
may be caused by snow on the PV
modules. • Wait until irradiation is higher.
• If this event recurs at medium
irradiation levels, check the PV plant
design and the correct circuitry of
the PV array.
3401,
3402 < DC overvoltage >
< Disconnect generator >
The DC input voltage connected to the
inverter is too high. • Immediately disconnect the
inverter from the PV array
(see Section 9 "Disconnecting
the Inverter from Voltage
Sources", page 63)! The inverter
may otherwise be destroyed.
• Check that the DC voltage of the
strings adheres to the maximum
input voltage of the inverter before
reconnecting the inverter to the PV
array.
3501 < Earth fault >
< Check generator >
The inverter has detected an earth fault in
the PV array. • Check strings for earth faults (see
Section 12.2 "Checking the PV
Array for Earth Faults", page 85).
• The installer of the PV array must
remedy any earth faults before the
affected string is reconnected.
3601 < High discharge curr. >
< Check generator >
The leakage current from the inverter and
the PV array is too high.
This may be caused by a sudden earth
fault, a residual current or malfunction, or
the earth capacitance of the PV plant is too
high.
The inverter interrupts feed-in operation
immediately after exceeding a threshold
and then automatically reconnects to the
electricity grid. • Check strings for earth faults
(see Section 12.2 "Checking the PV
Array for Earth Faults", page 85).
• The installer of the PV array must
remedy any earth faults before the
affected string is reconnected.
• Check whether the leakage current
from the PV modules is too high.
3701 < Resid.curr.too.high >
< Check generator >
The inverter has detected a residual
current through brief earthing of the PV
array. • Check strings for earth faults
(see Section 12.2 "Checking the PV
Array for Earth Faults", page 85).
• The installer of the PV array must
remedy any earth faults before the
affected string is reconnected.
Event no. Display message and cause Corrective measures