SMA STP 50-40 - 6 Electrical Connection; 6.2 AC Connection

6 Electrical Connection
SMA Solar Technology AG
Operating manualSTP50-4x-BE-en-2336
6 Electrical Connection
6.1 Overview of the Connection Area
_
+
_
+
A
B
C
D
E
F
A
F
D
E
G
_
+
_
+
I
J
B
H
C
Figure 10: Connection areas of the inverters' AC Connection Unit and DC Connection Unit
Position Designation
A Slots for AC surge protection devices
B Terminal blocks for AC connection
C Bridge between N and enclosure
D Grounding terminal for grounding conductor connection
E Enclosure opening for cable gland M63
F Enclosure opening for additional cable
G Cable glands for network cables and, if needed, for the connection cables of
the AntennaExtensionKit or other data cables
H Positive and negative connectors for DC connection
I Slots for DC surge protection devices
J Communication assembly
6.2 AC Connection
6.2.1 Requirements for the AC Connection
AC cable requirements as follows:
☐ Conductor type: aluminum and copper wire
☐ External diameter: 35mm to 48mm / 26mm to 39mm