STL inverter series

english
STL • colour graphic touch screen
data logger
inverter •• integrated
USB port on front panel
series • indoor / outdoor use
STL inverters: the future is here
advanced technology
These advanced inverters offer superior performance and a
lightweight, transformerless design.
STL inverters deliver a 97% efficiency.
universal communication
STL inverters are equipped with built-in data logger to record field
operating data. Recorded data can be copied quickly and easily to
a USB memory stick. Selco Energy has developed a complete and
advanced monitoring system that calculates and transmits essential
information to the user. The monitoring system is available in two
versions: EnergyWebMonitor® and EnergyWebGuard® and it can
transmit data over ETHERNET, Wi-Fi and GPRS connections.
all the energy is for you
STL inverters have been developed using carefully selected
technical solutions to guarantee excellent efficiency from a
lightweight, compact package. A wide string voltage range and
Selco Energy new SmartTrack algorithm allow STL inverters to carry
on functioning at full power even in poor sunlight. STL inverters are
also available in versions with 2 MPPT trackers. This makes PV field
configuration as flexible as possible by permitting strings to be set
up with different azimuths, tilts and dimensions.
One_Touch interface
The user interface of STL inverters is provided by a generous 3.5 inch
touch screen display with clear and intuitive graphics. This display
lets you read operating data clearly, and set parameters quickly and
easily. A simple touch is enough to activate it even in zero sunlight
conditions.
Three signalling LEDs provide a rapid read-out of the inverter’s
functioning status.
watch the video
youtube.com/selcoenergy
A world of opportunities
STL Energy Controller device is integrated in the STL inverter series
and it increases the share of domestic energy for own consumption
with automatic savings in electric bills. The on-site consumption is
promoted by recent legislation aimed at encouraging the final user
to use the energy produced by their PV equipment. This allows
economic and environmental benefits, reducing the currents along
the grid, and contributing to lower transmission losses.
SolarPlan
SolarPlan is a software tool developed by Selco Energy to ensure
perfect integration between inverters and their photovoltaic fields,
and to optimise overall system efficiency.
Though simple to use, SolarPlan is an extremely effective tool for
designers and installers configuring PV systems of all sizes, from
small domestic systems to large parks. An easy to use and intuitive
menu lets you configure systems in 3 simple steps.
Informative messages guide you through every stage of the
process.
STL 200
1 MPPT
STL300
STL400
Inputs (DC)
Maximum power
2,3 kW
3,4 kW
4,5 kW
Maximum voltage
600 V
600 V
600 V
MPPT voltage range
100 V – 550 V
100 V – 550 V
100 V – 550 V
Start input voltage
115 V
115 V
115 V
Maximum power per MPPT
–
–
–
Maximum power per MPPT - Unbalanced operation
–
–
–
Maximum input current (per MPPT)
11,5 A
17,0 A
22,5 A
Number of MPPT trackers
1
1
1
Maximum number of strings
2
2
2
Grid connection
Single phase
Single phase
Single phase
Rated power
2,0 kW
3,0 kW
4,0 kW
Maximum power
2,2 kW
3,3 kW
4,4 kW
Nominal voltage range
195... 264 Vac
195... 264 Vac
195... 264 Vac
Maximum output current
9,6 A
14,3 A
19,1 A
Grid frequency
50 Hz / 60 Hz
50 Hz / 60 Hz
50 Hz / 60 Hz
Cosφ
> 0,995 (adj ± 0,90)
> 0,995 (adj ± 0,90)
> 0,995 (adj ± 0,90)
Maximum efficiency
97,0 %
97,0 %
97,0 %
European efficiency
96,0 %
96,0 %
96,0 %
Start feeding-in power
10 W
10 W
10 W
DC reverse polarity



Integrated RCMU



AC short circuit protection



Overvoltage category (imput/output)
II / III
II / III
II / III
Safety class
I
I
I
Ground fault monitoring



DC load-disconnecting switch



DC connection (quick)



AC connection (spring clamp)



Interface (USB / CAN bus / Ethernet / CAN-BUS)
 / / / 
 / / / 
 / / / 
Touch screen graphic display 3.5”



Auxiliary relay



Energy Controller (on-site consumption management)



Ambient operating temperature
- 25 °C … + 60 °C
- 25 °C … + 60 °C
- 25 °C … + 60 °C
Noise emissions
< 35 dB
< 35 dB
< 35 dB
Enclosure Protection Rating
IP 65
IP 65
IP 65
Installation
Indoor/Outdoor
Indoor/Outdoor
Indoor/Outdoor
Outputs (AC)
Efficiency
Protections
Equipment
General data
Warranty and certificates
Duration (5 / 10 / 15 / 20 years)
Certificates and approvals
 /  / / 
 /  / / 
/  / / 
CE / CEI 0-21 / VDE 0126-1-1 / G 83/2 / ABNT NBR 16149 / EN 50438

standard — 
optional
STL420
2 MPPT
STL520
STL620
Inputs (DC)
Maximum power
4,5 kW
5,3 kW
6,3 kW
Maximum voltage
600 V
600 V
600 V
MPPT voltage range
100 V – 550 V
100 V – 550 V
100 V – 550 V
Start input voltage
115 V
115 V
115 V
Maximum power per MPPT
3,0 kW
3,5 kW
4,0 kW
Maximum power per MPPT - Unbalanced operation
3,0 kW MPPT1 / 1,5 kW MPPT2
3,5 kW MPPT1 / 1,7 kW MPPT2
4,0 kW MPPT1 / 2,3 kW MPPT2
Maximum input current (per MPPT)
15,0 A
17,5 A
20,0 A
Number of MPPT trackers
2
2
2
Maximum number of strings
2 MPPT1 / 2 MPPT2
2 MPPT1 / 2 MPPT2
2 MPPT1 / 2 MPPT2
Grid connection
Single phase
Single phase
Single phase
Rated power
4,0 kW
5,0 kW
6,0 kW
Maximum power
4,4 kW
5,0 kW
6,0 kW
Nominal voltage range
195... 264 Vac
195... 264 Vac
195... 264 Vac
Maximum output current
19,1 A
21,7 A
26,1 A
Grid frequency
50 Hz / 60 Hz
50 Hz / 60 Hz
50 Hz / 60 Hz
Cosφ
> 0,995 (adj ± 0,90)
> 0,995 (adj ± 0,90)
> 0,995 (adj ± 0,90)
Maximum efficiency
97,0 %
97,0 %
97,0 %
European efficiency
96,0 %
96,0 %
96,0 %
Start feeding-in power
10 W
10 W
10 W
DC reverse polarity



Integrated RCMU



AC short circuit protection



Overvoltage category (imput/output)
II / III
II / III
II / III
Safety class
I
I
I
Ground fault monitoring



DC load-disconnecting switch



DC connection (quick)



AC connection (spring clamp)



Interface (USB / CAN bus / Ethernet / CAN-BUS)
 / / / 
 / / / 
 / / / 
Touch screen graphic display 3.5”



Auxiliary relay



Energy Controller (on-site consumption management)



Ambient operating temperature
- 25 °C … + 60 °C
- 25 °C … + 60 °C
- 25 °C … + 60 °C
Noise emissions
< 35 dB
< 35 dB
< 35 dB
Enclosure Protection Rating
IP 65
IP 65
IP 65
Installation
Indoor/Outdoor
Indoor/Outdoor
Indoor/Outdoor
Outputs (AC)
Efficiency
Protections
Equipment
General data
Warranty and certificates
Duration (5 / 10 / 15 / 20 years)
Certificates and approvals
 /  / / 
 /  / / 
/  / / 
CE / CEI 0-21 / VDE 0126-1-1 / G 59/2 / ABNT NBR 16149 / EN 50438

standard — 
optional
100% Made in Selco
Selco Energy is committed to manufacturing according to the
standards of 100% “Made in” certification. Selco Energy’s
manufacturing process is certified by the prestigious Institute for the
Protection of Italian Manufacturers (ITPI).
Selco Energy is committed to combining Italian competence and
creativity in the design and assembly processes with the use of
components from highly competent local suppliers who have grown
along with the Selco brand in 30 years of activity. This strategic
choice guarantees a top quality production process that generates
technically reliable, efficient and high performance products.
Selco Energy has carefully selected the materials of the inverter
casing to ensure long term reliability under all ambient conditions.
STL inverters have an protection rating IP65 and are therefore
suited to indoor or outdoor use.
All STL inverters can be equipped with an integrated DC
disconnecting switch on request.
H
quality and robustness
STL 200 / 300 / 400 STL 420 / 520 / 620
W mm
372
372
H mm
667
767
D mm
185.5
185.5
Weight kg
< 20
< 25
safety and simplicity
STL inverters are extremely safe to use thanks to a number of
integrated protection systems including isolation testing, interface
protection, string polarity inversion protection, and AC side short
circuit protection. STL inverters are also equipped with a special,
integrated RCMU protection device that checks for residual currents.
STL inverters therefore do not need additional class B differential
relays to protect them against DC current earth leakage. All STL
inverters are equipped with a protection device that intervenes in
the event of a power supply malfunction or overtemperature. STL
inverters come with wall mounting flanges and clearly marked
electrical terminals, and are quick and easy to install. They also
feature a practical front access panel that provides easy access to
internal components without having to remove the outer casing.
This makes connection and maintenance operations extremely
quick and easy.
W
D
selco energy: decades of experience in inverter technology
Selco was set up in the late 1970s
Selco has been manufacturing inverters since its earliest
beginnings, first for industrial applications and later for the
renewable energy sector.
Selco has always pioneered innovative inverter designs and
applications, and has often led the way in introducing new
technology. Selco has two large, modern factories, both
in Italy.
Selco boasts enviable experience in
inverter technology
From the outset to the present day, Selco has sold thousands
of inverter based systems.
Selco puts every effort into the development of innovative
solutions that combine functionality and safety, and into
the rationalisation and standardisation of components.
Selco’s ultra-modern electronics R&D centre designs and
develops all the software and hardware for Selco products.
Selco’s R&D labs carry out rigorous tests on all new
solutions to continually improve product performance
Selco’s R&D centre is continuously engaged in the testing
of new solutions to improve performance and safety.
Selco has registered numerous industrial patents and
works hand in hand with university research institutes on
the development of innovative technologies.
Selco Marketing Department
cod. 90.50.00601
www.selcoenergy.eu
Selco Energy
a division of SELCO S.R.L.
Via Palladio, 19 - 35019 Onara di Tombolo (Padova) ITALY
Tel. +39 049 9413200 - Fax +39 049 9413331
info@selcoenergy.it
Selco declines all responsibility for errors in catalogues, publications and other written materials.
Selco reserves the right to modify is products at any time and without prior notice. All trademarks mentioned are the property of Selco Srl.
The name Selco Energy and the Selco Energy logo are registered trademarks of Selco Srl. All rights reserved.