SMA SB 3300-11 Installation - Manual (Page 49)

SMA Solar Technology AG Maintenance and Cleaning
Installation Manual SB33-38-11-IA-en-62 49
8.3 Checking the Electronic Solar Switch for Wear
Check the Electronic Solar Switch for wear before plugging it in. Depending on the shape of the
Electronic Solar Switch, you can estimate the wear on either the metal tongues (shape A) or on the
plastic (shape B).
Result Measure
☑ The metal tongues in the
Electronic Solar Switch are undamaged
and not discolored (A).
or
☑ The plastic in the Electronic Solar Switch is
undamaged (B).
1. Insert the handle of the
Electronic Solar Switch securely in the jack
on the bottom of the enclosure.
2. Commission the inverter as described in
section 6 "Commissioning" (page 39).
☑ The metal tongues in the
Electronic Solar Switch have a brown
discoloration or are burned through (A).
or
☑ The plastic in the Electronic Solar Switch
shows thermal deformation (B).
The Electronic Solar Switch can no longer safely
disconnect the DC side.
1. Replace the Electronic Solar Switch handle
before attaching it again (order number see
section 12 "Accessories" (page 71)).
2. Commission the inverter as described in
section 6 "Commissioning" (page 39).