SMA STP 60-US-10 Installation - Manual (Page 51)

SMA Solar Technology AG 5 Technical Data
Installation Guide STP60-10-IA-xx-10 51
5.7 Technical Data of the
Communication Interface
Table 5.9 Technical data of the communication interface
1) For outdoor use, ensure that an appropriate cable is used. If the
cable is very stiff, an intermediate terminal should be used in
order to change from a stiff to a more flexible cable before
entering the inverter. For some cables it might be sufficient to
remove the hard outer mantle of the part of the cable inside
the inverter enclosure. This is to protect the PCB-mounted
RJ-45 Ethernet ports from excessive strain, which could lead
to damage or connection issues.
Figure 5.3 Auxiliary interfaces (cutout of Communication PCB with
RJ-45 Ethernet ports)
Interface Parameter Parameter details Specification
Ethernet Cables Cable sheath diameter ( ⌀ ) 2 x 5 to7 mm
Cable type STP cable (Shielded Twisted Pair,
CAT 5e or SFTP CAT 5e)
1)
Cable characteristic
impedance 100 Ω to 120 Ω
RJ-45 connector: 2 pcs. RJ45
for Ethernet Wire size 24 to 26 AWG (depending on
design of the RJ-45 plug)
Cable shield termination Via RJ-45 plug
Galvanic interface insulation Yes, 500 Vrms
Direct contact protection Double/reinforced insulation Yes
Short-circuit protection Yes
Communication Network topology Star and daisy chain
Cables Maximum cable length
between inverters 100 m (328 ft)
Max. number of inverters Per SMA Inverter Manager 42