SMA SUNNY TRIPOWER 60 - 3 Product Description; 3.1 Modbus Protocol; 3.2 SunSpec Modbus Profile for SMA Devices; 3.3 PV System Topology

SMA Solar Technology AG 1 Introduction
Installation Manual STP60-JP-10-IA-en-11 9
Figure 1.2 Front view of the inverter
Abbreviation Description
cat5e Category 5 twisted pair cable
(enhanced) for data transmission
DHCP Dynamic Host Configuration Protocol –
enables automatic assignment of the
network address via the DHCP server
DSL Digital Subscriber Line
EMC
(directive)
Electromagnetic compatibility directive
ESD Electrostatic discharge
FRT Fault Ride Through
GSM Global System for Mobile
Communications (standard for digital
cellular mobile network)
HDD Hard Disk Drive
IEC International Electrotechnical
Commission – international standards
organization
IT Isolated Terra
LCS Local commissioning and service tool
(LCS-Tool)
LED Light-emitting diode
LVD (Directive) Low-voltage directive
MCB Circuit breaker
MPP Maximum Power Point
MPPT Maximum Power Point Tracking
determines the point of optimum PV
power
F1 F3 F4F2
OK
Home
Back
Alarm
On
P P is the symbol for active power and is
measured in Watts (W).
PCB Printed circuit board
PCC Point of Common Coupling - point of
interconnection
The point on the public electricity network
to which other customers are, or could be,
connected.
Grounding
conductor
Protective grounding
PELV Protected Extra-Low Voltage
PLA Power Level Adjustment = Output power
limitation
P
nom
Power [W], Nominal active power
POC Connection point
The point at which the PV system is
connected to the public utility grid.
P
STC
Power [W], Standard Test Conditions
PV Photovoltaic, photovoltaic cells
RCD Residual-current device
RCMU Residual Current Monitoring Unit
R
ISO
Insulation resistance
ROCOF Rate of Change of Frequency
Q Q is the symbol for reactive power and is
measured in reactive volt-amperes (VAr).
S S is the symbol for apparent power and is
measured in volt-amperes (VA).
STC Standard Test Conditions
SW Software
THD Total Harmonic Distortion
TN-S Terra Neutral - Separate. AC Network
TN-C Terra Neutral - Combined. AC Network
TN-C-S Terra Neutral - Combined - Separate. AC
Network
TT AC grid with separation between
operational ground of the generator and
ground of the load system
DNO Distribution Network Operator
Abbreviation Description