SMA STP 15000TL Service Manual - Manual (Page 36)

11 Replacing the Surge Arrester
If the inverter displays the event numbers 8301 or 8302, at least one surge arrester is defective.
SMA Solar Technology AGrecommends replacing all surge arresters.
Procedure:
1.
Danger to life due to high voltages
• Disconnect the inverter from all voltage sources and open the lower enclosure lid (see
Section 2.2, page 7).
• Wait 20 minutes before removing the DC protective cover.
2. Release all four screws of the DC protective
cover using an Allen key (AF 3) and remove the
DC protective cover.
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. Insert new surge arresters:
• The surge arrester marked "PE 500" must
be inserted in the bottom slot. The
inspection window on the surge arrester
must face to the right.
• If input A and input B were secured with
surge arresters, insert a new surge arrester
into each slot. The inspection window on
each surge arrester must face to the right.
11 Replacing the Surge Arrester SMA Solar Technology AG
Service Manual STP15-17TL-10-SG-en-10 36