SMA SB 3300 Installation - Manual (Page 51)

SMA Solar Technology AG Maintenance and Cleaning
Installation Guide SB33_38-IEN111851 51
8.2 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 socket on the bottom
of the enclosure.
2. Commission the inverter as described in
section 6 ”Commissioning” (page 37).
☑ 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 72).
2. Commission the inverter as described in
section 6 ”Commissioning” (page 37).