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2 view from inside, View from inside – SMA SB 3300TL HC User Manual

Page 16

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Electrical Connection

SMA Solar Technology AG

16

SB3300TLHC-IEN094121

Installation Guide

5.1.2 View from Inside

The following diagram gives a schematic overview of the various components and connection points
inside the Sunny Boy with the cover removed:

Object

Description

A

Socket for communication (RS485, radio), section 5.5 ”The Communications Interface”
(page 23)

B

Sunny Display

C

PE (protective earth) connecting cable for cover

D

Operating status LEDs

E

Connection terminals (AC), chapter 5.2.1 ”Connection of the AC Output” (page 18)

F

Tab for grounding the cable shield with RS485 communication

G

Socket for the PLC power module (required for mains grid communication)

H

Electronic Solar Switch (ESS) socket

I

PV input plugs (DC), section 5.3.1 ”PV string (DC) connection” (page 20)

J

Varistors, section 9.1 ”The red LED is continuously lit” (page 32)

K

Jumper slot for communication

L

Communication connector