SMA STP 17000TL-30 - Replacing the Surge Arrester

10 Troubleshooting
SMA Solar Technology AG
Operating manualSTP15-25TL-30-BE-en-1774
10.6 Replacing the Surge Arrester
If at least one surge arrester is defective, SMA Solar Technology AG recommends replacing all
surge arresters.
Procedure:
1.
DANGER
Danger to life due to electric shock
• Disconnect the inverter from all voltage sources and open the lower enclosure lid (see
Section11, page76).
• Wait 20 minutes before removing the DC protective cover.
2. Release the screws on the DC protective cover using
an Allen key (AF3), lift the DC protective cover
upwards from below and remove it.
3. Pull all surge arresters out of the slots. To do so,
squeeze the grooved areas on the left and right
sides of the surge arrester.
4. Remove the red protective ring from the middle
contact on the bottom of each surge arrester.