Connection Unit Interface - SolarEdge SE50K Installation Manual

Connection Unit Interface

The Connection Unit is part of the Primary Unit.
There are two types of Connection Units, with MC4 connectors (see See Figure 10) or with cable glands for
DC connection( see Figure 11
Safety Switch: a manually operated safety switch for disconnecting the DC p ower of the S olarEdge
l
system.
Cables for connection to the Secondary Unit(s):
l
Communication cable
o
DC Cable
o
AC Cable
o
DC input: M C4 c onnectors / cable glands: for DC+/- connection of the PV installation, there are 3
l
glands / 6 MC4 connectors for each unit.
Each gland has 3 openings to support three strings:
each opening can support 5-8.8 mm PV cable outer diameter
o
each terminal block in the connection unit can support 4-10mm
o
Figure 10: Connection Unit with MC4 Connectors bottom interface
Extended Power Commercial Inverter Installation Guide MAN-01-00402-1.0
Figure 9: Connection Unit front and side interface
for 1 Secondary Unit (left), for 2 Secondary Units (right)
Chapter 3: Installing the Primary and Secondary Unit(s)
2
PV wire cross section
21