SMA STP 15000TL Installation - Manual (Page 52)

Electrical Connection SMA Solar Technology AG
52 STP20TLHE-IA-IEN122222 Installation Manual
6.7 Activating and Deactivating the Reverse Current Protection at
Input Area A
The reverse current protection is activated upon delivery. If you are using both input areas, the reverse
current protection must be activated at both input areas.
If you are using only input area A, you can deactivate the reverse current protection at input area A,
which will slightly increase the inverter efficiency.
The reverse current protection at input area B cannot be deactivated.
The procedure for deactivating and reactivating the reverse current protection at input area A is
described below.
Requirements for deactivating the reverse current protection:
• Input area B must not be used.
• The reverse current resistance of the PV modules must be complied with.
Procedure
1. When the inverter is in operation, disconnect the inverter (see Section 8 "Disconnecting the
Inverter from Voltage Sources" (page 58)).
2. Loosen the screws of the upper enclosure lid.
For this purpose, use an Allen key (AF 4).
3. Pull the upper enclosure lid forwards to remove it.
4. Deactivating or activating the reverse current protection at input area A:
– To deactivate the reverse current protection,
insert both ends of the jumper cable into the
yellow terminals as far as they will go. Do not
kink the cable.
Jumper cable
Use only the supplied jumper cable to deactivate the reverse current protection.