SMA sunny boy 2000hf-us, Installation Manual

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SMA America, LLC Wiring the Sunny Boy
Installation Guide SB20_25_30HFUS-eng-IUS113711 55
☑ Both parts of the lock symbol on the connection
part and on the cap of the SMA Plug-in
Grounding form the complete symbol of a lock.
4. If the PV array shall be negatively grounded:
connect the SMA Plug-in Grounding to the terminal
socket so that the ”‒” symbol shows to the front on
the cap. Push the SMA Plug-in Grounding upwards
until it clicks into place.
If the PV plant shall be positively grounded: connect
the SMA Plug-in Grounding to the terminal socket
so that the ”+” symbol shows to the front on the
cap. Push the SMA Plug-in Grounding upwards
until it clicks into place.
☑ The SMA Plug-in Grounding is installed.
– Make sure that the PV-generator is connected
as described in section 6.3 ”Connection of the
PV array (DC)” (page 43).
– Make sure that the PV strings are connected as
described in section 6.4 ”Connection of PV
strings without optional string fuses” (page 46)
or, if you use optional fuses, as described in section 6.5 ”Connection of PV strings with
optional fuses” (page 50).
– Close the SMA DC Disconnect (see section 8.3 ”Closing the SMA DC-Disconnect”
(page 67)).
– Commission the Sunny Boy (see section 7 ”Commissioning” (page 63)).
N L1 L2
L1 N L2
+
L1 L2 N
One and Two String Wiring
(for more strings and further information see manual)
One and Two String Wiring
(for more strings and further information see manual)
DC +
Negative Grounding Negative Grounding Positive Grounding
DC -
UNGROUNDED UNGROUNDED
GROUNDED
GROUNDED
UNGROUNDED UNGROUNDED GROUNDED
GROUNDED
Terminal
=
~
Terminal =
~
Facing -
Inverter Wire black (-) Inverter Wire black (-)
Inverter Wire red (+) Inverter Wire red (+)
PLUG-IN GROUNDING
grounded ungrounded
+ +
N
L1 N L2
+
L1 L2 N
One and Two String Wiring
(for more strings and further information see manual)
One and Two String Wiring
(for more strings and further information see manual)
DC +
Negative Grounding Negative Grounding Positive Grounding Positive Grounding
DC -
UNGROUNDED UNGROUNDED
GROUNDED GROUNDED
GROUNDED
UNGROUNDED UNGROUNDED GROUNDED GROUNDED
GROUNDED
Terminal =
~
Terminal Terminal =
~
Facing -
Inverter Wire black (-)
Inverter Wire red (+)
PLUG-IN GROUNDING
N L1 L2
grounded ungrounded
N L1 L2
+ +