Checking The Electronic Solar Switch (Ess) For Wear - SMA SUNNY MINI CENTRAL 4600A Installation Manual

Maintenance and Cleaning
8.3 Checking the Electronic Solar Switch (ESS) 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
☑ 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).
☑ 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).
64 SMC46-60A-IA-IEN120471
A
B
A
B
Measure
1. Securely attach the Electronic Solar Switch
handle.
2. Commission the inverter as described in
section 6 "Commissioning" (page 48).
The Electronic Solar Switch can no longer reliably
disconnect the DC side.
1. Replace the Electronic Solar Switch handle
before attaching it again (for the order
number, see section 12 "Accessories"
(page 85)).
2. Recommission the inverter as described in
section 6 "Commissioning" (page 48).
SMA Solar Technology AG
Installation Manual