10 Troubleshooting
SMA Solar Technology AG
Operating manual STP15-25TL-30-BE-en-17 75
5. Plug the new surge arresters into the designated
slots until they lock into place with the locking tabs.
The inspection window on each surge arrester must
face to the right.
6. Ensure that each surge arrester is securely inserted into its slot.
7. Tighten all four screws on the DC protective cover
with an Allen key (AF3) in the sequence 1 to 4
(torque: 3Nm ± 0.3Nm).
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